CN1922349B - Weft tension device for jet looms - Google Patents

Abstract

Disposed on the back of a modified reed (12) forming a weft guide passage (121) is a nozzle forming body (31) provided with a stretch nozzle (312). A passage forming body (39) provided with a weft arrest passage (38) is disposed in front of the modified reed (12). The position where the passage forming body (39) is disposed can be changed along the guide passage (121). At least a part of the arrest passage (38) extends in a direction intersecting the direction of extension of the guide passage (121). The weft tension device thus arranged can cope with changes in woven width without incurring degradation of fabric quality and can impart sufficient tension to the weft.

Description

Weft tension imparting device in air-jet loom

technical field

The present invention relates to an air-jet loom for inserting a weft thread along a guide path by the air jet action of a weft-inserting nozzle, and more particularly to a weft thread tension imparting device which guides the weft thread into a catching path by the air jet sprayed from a stretching nozzle and catches it air jet loom.

Background technique

In the air-jet loom, the weft is drawn out from the weft length measuring storage device by the air jet of the nozzle for weft insertion for weft insertion. When the weft thread is drawn out from the weft thread length measuring storage device, the pulling out control is carried out according to the requirement of carrying out the weft insertion with the weft thread of the required length for one weft insertion. That is, the weft thread length-measuring storage device can switch between a state in which the weft thread can be drawn out and a state in which the weft thread cannot be drawn out. When the weft thread length measuring storage device is switched to the non-extractable state of the weft thread and thus the extraction of the weft thread is prevented, the weft thread of the required length for one weft thread insertion is used for weft insertion. When the withdrawal of the weft thread is blocked, a tension wave fluctuating from the side of the weft thread length-measuring storage device to the front end of the weft thread will be generated on the flying weft thread. After the tension wave reaches the leading end of the weft, it returns in the direction opposite to the direction in which the weft travels.

After the weft starts to fly, it is temporarily elongated by several percentage points under the action of the air jet force of the nozzle for weft insertion and the inertial force of the weft. It will then vibrate due to the relaxation of the propagation of the tension wave. If beating-up is performed in a state where the weft threads are often slack, the tension of the weft threads will be different at the left and right positions of the fabric, resulting in a decrease in the quality of the fabric.

Patent Documents 1 to 5 disclose weft tension imparting devices aimed at solving the above problems. The weft thread tension imparting device is a device that gives the weft thread of the weft insertion a moderate tension when beating up. The weft thread tensioning devices disclosed in Patent Documents 1 and 2 are provided on the side of the weft insertion end of the sley of the loom. In these devices, the airflow blown into the introduction pipe from the nozzle traverses the weft thread guide passage, and the leading end of the weft thread flying in the guide passage is introduced into the pipe by the blowing of the airflow. As a result, the front end of the weft yarn is bent by the air flow to be caught in the catch tube, and the weft yarn is given tension.

In the devices disclosed in Patent Documents 3 and 4, nozzles are provided on the front side of the reed and catch pipes are provided on the back side of the reed. The airflow ejected from the nozzle passes laterally through the weft thread guide passage on the front side of the reed and is blown into the catch pipe, and the front end of the weft thread flying in the guide passage is guided into the catch pipe by the blowing of the airflow. As a result, the front end of the weft is bent by the air flow and caught in the catch tube, so that the weft is given tension.

In the device disclosed in Patent Document 5, an air injector is incorporated in a weft guide passage formed on the front surface of the reed. The front end of the weft thread flying in the guide passage enters the air injector and is subjected to the air flow.

However, in the devices disclosed in Patent Documents 1 and 2, it is necessary to install a weft thread tension applying device at a position on the side of the weft insertion end that overlaps with the reed when viewed from the weft insertion direction. Therefore, when weaving a fabric whose weaving width is shorter than the length of the reed in the weft insertion direction, it is necessary to cut off the end of the reed on the weft insertion end side to shorten the total length of the reed or to lengthen the length of the discarded selvage. If the total length of the reed is shortened, when weaving a fabric having a weaving width that can be woven before the reed is cut, it is necessary to replace it with a new reed having the same length as the reed before cutting. If the length of the discarded selvedge is lengthened, it will inevitably cause waste of weft threads.

In the devices disclosed in Patent Documents 3 and 4, since the attachment position of the catch tube in the direction in which the guide passage extends can be changed, the problems in the devices of Patent Documents 1 and 2 do not occur. However, in order to allow the weft thread to smoothly enter the catching pipe provided on the back side of the reed, a pair of insertion pins installed in the catching pipe are squeezed between the reed blades to form a slit-like gap. If the insertion pin is inserted between the reed blades, the fixing portion for fixing the reed blades from above and below may be deformed and loosened. Deformation and loosening of the joints will prevent the regular spacing of the reed blades. If the reed blades that cannot keep the regular intervals are used within the weaving width range, vertical stripes (warp willows) extending along the warp direction will be produced on the fabric near the reed blades that do not keep the regular intervals, and the quality of the fabric will be significantly reduced.

In the device disclosed in Patent Document 5, the leading end portion of the weft thread entering the air injector is caught in a straight state, and thus sufficient tension cannot be obtained.

Patent Document 1: Japanese Patent Publication No. 57-17982

Patent Document 2: Japanese Unexamined Patent Publication No. H10-204752

Patent Document 3: Publication No. 60-63580 of Shikaizhao

Patent Document 4: Shikaihei No. 2-115583

Patent Document 5: Japanese Patent Publication No. 58-38544

disclosure of invention

task of invention

The object of the present invention is to provide a weft tension applying device capable of changing the weaving width without reducing the quality of the fabric, and capable of imparting sufficient tension to the weft.

Technical solution for realizing the task of the invention

In order to achieve the above objects, the present invention provides an air-jet loom for inserting weft yarns along a guide path by the air jet action of a weft-inserting nozzle, which has a path forming body forming a catching path and a stretching nozzle, in order to displace the weft thread A weft thread tensioning device that captures the weft thread in the catching passage and introduces the weft thread into the catching passage by the air flow ejected from the stretching nozzle. The passage forming body is provided on the front side of the guide passage, and its installation position can be changed along the guide passage. At least a part of the capturing passage extends in a direction intersecting with an extending direction of the guiding passage.

The leading end portion of the weft thread introduced into the catching passage is caught in the catching passage in a curved shape. The structure in which the front end of the weft yarn is caught in a curved shape by the airflow enables the weft yarn to obtain sufficient tension. The passage forming body having the catching passage is located on the front side of the guiding passage, so there is no need to expand the distance between the reeds like the conventional device that introduces the weft into the catching pipe after the weft passes between adjacent reeds. Therefore, there is no problem that the fabric is damaged by increasing the distance between the reed blades. In addition, since the installation position of the passage forming body can be changed along the guide passage, it is possible to cope with different weaving widths.

Brief description of the drawings

Fig. 1(a) is a perspective view of an air-jet loom having a weft tensioning device according to a first embodiment of the present invention, and Fig. 1(b) is an enlarged perspective view of important parts of the weft tensioning device in Fig. 1(a).

Fig. 2 is a top sectional view of the air-jet loom of Fig. 1(a).

Fig. 3 (a) is a side sectional view of the weft tensioning device of Fig. 1 (a), and Fig. 3 (b) is a side sectional view of key parts of the weft tensioning device of Fig. 3 (a).

Fig. 4 is a top sectional view showing a beating-up state of the air-jet loom of Fig. 2 .

Fig. 5 is a graph showing changes in the frictional force between the weft and the passage forming body.

Fig. 6 is a perspective view of key parts of a weft tension applying device according to a second embodiment of the present invention.

Fig. 7 is a top sectional view of the weft tension applying device of Fig. 6 .

Fig. 8(a) is a top sectional view of a weft thread tensioning device according to a third embodiment of the present invention, and Fig. 8(b) is a side sectional view of the weft thread tensioning device in Fig. 8(a).

Fig. 9 is a plan sectional view of a weft tension applying device according to a fourth embodiment of the present invention.

Fig. 10 is a plan sectional view of a weft tension applying device according to a fifth embodiment of the present invention.

Fig. 11 is a side sectional view of a weft tension applying device according to a sixth embodiment of the present invention.

Fig. 12 is a perspective view of key parts of a weft thread tension applying device according to a seventh embodiment of the present invention.

Fig. 13 is a plan sectional view of the weft tension applying device of Fig. 12 .

Fig. 14(a) is a side sectional view of the weft thread tensioning device of Fig. 12, and Fig. 14(b) is a sectional view of key parts of the weft thread tensioning device of Fig. 12 .

Fig. 15(a) is a top sectional view of a weft thread tensioning device according to an eighth embodiment of the present invention, and Fig. 15(b) is a side sectional view of the weft thread tensioning device in Fig. 15(a).

Fig. 16(a) is a perspective view of a key part of a weft thread tensioning device according to a ninth embodiment of the present invention, and Fig. 16(b) is a cross-sectional view of a key part of the weft thread tensioning device of Fig. 16(a).

Fig. 17(a) is a side sectional view of a weft tensioning device according to a tenth embodiment of the present invention, and Fig. 17(b) is a top sectional view of the weft tensioning device of Fig. 17(a).

BEST MODE FOR CARRYING OUT THE INVENTION

Next, a first embodiment of the present invention will be described with reference to FIGS. 1( a ) to 5 .

As shown in FIG. 1( a ), an air-jet loom having a weft thread tension imparting device has a sley 11 on which a deformed reed 12 vertically arranged is fixed. The lower part of the deformed reed 12 is fastened by wedge strips 35 in grooves 111 formed on the upper surface of the sley 11 .

A weft guide passage 121 is formed on the front surface of the deformed reed 12 . The weft yarn Y ejected from the main nozzle for weft insertion (not shown) can fly in the guide passage 121 under the continuous injection of a plurality of sub-nozzles 13 for weft insertion (only one is shown in the figure) as nozzles for weft insertion. . The weft yarn Y is drawn out from a winding-type weft yarn length-measuring storage device (not shown) by the jet of air from the main nozzle for weft insertion.

Between the ground warp thread T1 for forming the woven fabric W and the side yarn T2 for forming the discarded selvedge W1, a first weft detector 14 is provided, and a second weft detector 15 is provided on the side of the side yarn T2. . Both the first weft detector 14 and the second weft detector 15 are reflective photoelectric sensor type detectors, and are attached to the sley 11 . The first weft detector 14 and the second weft detector 15 have detection areas in the guide passage 121 , and the weft detectors 14 and 15 are used to detect whether or not the weft Y in the guide passage 121 has arrived.

A weft yarn catching unit 16 is provided between the side yarn T2 and the second weft yarn detector 15 . The catching unit 16 has a unit body 21 and a supporting foot 22 connected to a lower portion of the unit body 21 . The catch unit 16 is mounted on the sley 11 .

As shown in FIG. 3( a ), an inclined mounting surface 17 is formed on the front surface of the sley 11 . A support groove 18 extending along the length direction of the sley 11 is formed on the mounting surface 17 . The support groove 18 includes a narrow portion 181 near the mounting surface 17 and a wide portion 182 on the inner side, and a step 183 is formed between the narrow portion 181 and the wide portion 182 . The step 183 extends parallel to the mounting surface 17 . The support feet 22 of the catch unit 16 engage on the mounting surface 17 . A pair of bolts 19 (see FIG. 1( b )) passes through the support legs 22 . The front end of the threaded portion 191 of each bolt 19 protrudes from the support leg 22 , and the lock nut 20 is screwed on the protruding end of the threaded portion 191 .

The hexagonal prism-shaped head 192 of the bolt 19 is located in the wide-width portion 182 , and the maximum diameter of the head 192 is larger than the width of the wide-width portion 182 . Therefore, the lock nut 20 can be fastened while the corner portion of the hexagonal head portion 192 is in contact with the inner wall of the wide portion 182 . By tightening the lock nut 20 , the head 192 is pressed against the step 183 , and the support foot 22 (ie, the catch unit 16 ) is fixed on the sley 11 .

The sub-nozzle 103 for weft insertion and the weft detectors 14 and 15 are attached to the sley 11 by the same means (bolts 19 and lock nuts 20) as used to attach the catching unit 16 to the sley 11.

A groove 23 is formed on the upper surface 211 of the unit body 21 . The groove 23 opens to the front face 213 of the unit body 21 .

As shown in FIG. 2 , a pair of fitting holes 24 and 25 are formed in the unit body 21 . The fitting hole 24 penetrates from the back surface 212 of the unit body 21 to the slot 23 . The fitting hole 25 penetrates from the side surface 214 of the unit body 21 (the side surface on the side of the second weft detector 15 ) to the groove 23 .

The first weft thread catching pipe 26 is fitted into the fitting hole 24 , and the second weft thread catching pipe 27 is fitted into the fitting hole 25 . The passage 263 in the first capture pipe 26 extends perpendicular to the direction in which the guide passage 121 extends. The protruding end portion of the first catch tube 26 protruding from the fitting hole 24 has a shape cut obliquely, and the oblique shape introduction port 261 of the first catch tube 26 extends into the guide passage 121 toward the edge yarn T2. side. That is, the introduction port 261 protrudes into the guide passage 121 so as to be connected to the guide passage 121 in a direction opposite to the direction in which the weft yarn Y travels.

The protruding end portion of the second capture pipe 27 protruding from the fitting hole 25 has a shape cut obliquely, and the oblique outlet 271 of the second capture pipe 27 protrudes into the guide passage 121 . The outlet 271 of the second catch pipe 27 intersects the guide passage 121 and faces the downstream side of the guide passage 121 , and the outlet 271 is provided on the upstream side of the second weft detector 15 with respect to the guide passage 121 .

As shown in FIG. 3( b ), an air supply hole 28 is formed on the lower surface 210 of the unit body 21 , and an air pipe 29 is connected to the air supply hole 28 . The air pipe 29 is connected to an unillustrated air pressure supply source through an unillustrated electromagnetic switch valve.

As shown in FIG. 2 , an expansion nozzle 30 is formed on a side wall of the unit body 21 forming the groove 23 . The stretching nozzle 30 communicates with the air supply hole 28 , and the pressurized air sent into the air supply hole 28 through the air pipe 29 is ejected from the stretching nozzle 30 . The spraying direction of the stretching nozzle 30 is directed to the inlet 272 of the second capture pipe 27 , and the airflow ejected from the stretching nozzle 30 crosses the groove 23 and blows into the inlet 272 of the second capture pipe 27 .

A curved surface 216 is formed between the back surface 212 and the side surface 215 (the side surface on the side of the first weft detector 14 ) of the unit main body 21 .

As shown in FIG. 3( a ), a nozzle forming body 31 is provided on the back side of the deformed reed 12 . The supporting leg 311 of the nozzle forming body 31 is fastened in the groove 111 by the wedge member 36 . The screw 37 passes through the wedge member 36 and is screwed into the screw hole 112 at the bottom of the groove 111 . The wedge member 36 is fastened by the screw 37 to fix the supporting leg 311 in the groove 111 . The screw holes 112 are provided in several rows in the longitudinal direction of the groove 111 , and by selecting the screw holes 112 , the installation position of the nozzle forming body 31 in the longitudinal direction of the groove 111 can be selected.

As shown in FIGS. 2 and 3( a ), an air supply hole 32 is formed on the back surface of the nozzle forming body 31 , and an air pipe 33 is connected to the air supply hole 32 . The air pipe 33 is connected to an unillustrated air pressure supply source through an unillustrated electromagnetic switching valve. A buffer sheet 34 made of rubber is fixed to the front surface of the nozzle forming body 31 . An expansion nozzle 312 is formed on the front surface of the nozzle forming body 31 , and a through hole 341 is formed in the buffer sheet 34 . The stretching nozzle 312 communicates with the air supply hole 32 , and the pressure air sent into the air supply hole 32 through the air pipe 33 is ejected from the stretching nozzle 312 . The spraying direction of the expansion nozzle 312 is directed to the introduction port 261 of the first capture pipe 26 . The airflow ejected from the stretching nozzle 312 passes through the through hole 341 and between the adjacent reed blades 122 of the deformed reed 12 and passes through the guide passage 121 laterally, and then is blown into the introduction port 261 of the first catch pipe 26 .

The air injection from the stretching nozzles 312 and 30 starts before the front end of the weft Y reaches the introduction port 261 of the first catch pipe 26 . The front end portion of the weft yarn Y flying in the guide passage 121 is blown into the first catch pipe 26 by the airflow ejected from the stretching nozzle 312 . The tip end of the weft yarn Y blown into the first catching pipe 26 passes through the outlet 262 of the first catching pipe 26 and enters the groove 23 . The front end portion of the weft yarn Y entering the groove 23 is blown into the introduction port 272 of the second catch pipe 27 by the airflow ejected from the stretching nozzle 30 . When the front end of the weft Y reaches the middle of the second catch pipe 27, the weft Y is prevented from being withdrawn from the weft length measuring storage device.

The stop of the air injection from the stretching nozzle 312 is performed after the front end of the weft Y is considered to be blown into the second catch pipe 27 . The air jet flow acting on the front end portion of the weft yarn Y blown into the second catching duct 27 imparts tension to the weft yarn Y.

The passage 263 in the first catching pipe 26 , the groove 23 , and the passage 273 in the second catching pipe 27 constitute a weft catching passage 38 having a portion extending in a direction intersecting the direction in which the guide passage 121 extends. The capture unit 16 , the first capture tube 26 , and the second capture tube 27 constitute a channel forming body 39 that forms a capture channel 38 . The first catch pipe 26 is a cylindrical portion extending into the guide passage 121 so that the introduction port 261 of the catch passage 38 faces in the direction opposite to the traveling direction of the weft Y and is connected to the guide passage 121 .

The groove 23 constituting a part of the capture passage 38 is provided in the middle of the capture passage 38 and functions as a branch passage opened toward the outside of the passage forming body 39 . The portion where the spraying direction of the stretching nozzle 312 and the spraying direction of the stretching nozzle 30 meet is located at the connecting portion between the catch passage 38 and the branch passage (groove 23 ). The introduction port 272 functions as a direction change port of the capture passage located downstream of the connection portion between the branch passage (groove 23 ) and the capture passage 38 .

With respect to the weft yarn Y, the weft yarn Y is beat-up in a state where the front end portion of the weft yarn Y is caught in a curved shape in the catching passage 38 . FIG. 4 shows a state when the weft yarn Y is beaten up on the fell Wo of the woven fabric W. As shown in FIG.

The first embodiment can obtain the following effects.

(1-1) The extending direction of the passage 263 in the first capture pipe 26 intersects (perpendicularly) the extending direction of the guide passage 121 . The front ends of the weft yarns Y introduced into the capturing passage 38 extending in this direction are captured in a shape bent by the airflow blown out from the stretching nozzles 312 and 30 . The weft yarn Y can be given sufficient tension by adopting a configuration in which the front end portion of the weft yarn Y is caught in a shape in which the airflow bends it.

(1-2) The front end portion of the weft yarn Y that is introduced into the catching passage 38 is connected to the inner peripheral edge 264 (as shown in FIGS. 2 and FIG. 4 ) and the inner peripheral edge 274 (as shown in FIG. 2 and FIG. 4 ) of the introduction port 272 of the second capture pipe 27 contact and bend at a large angle. The inner peripheral edges 264, 265, and 274 are bent portions formed on the walls forming the catch passage 38 to bend the weft threads. The structure in which the front end of the weft Y in the catching passage 38 is bent at a large angle has the effect of obtaining good tension of the weft Y, and also has the effect of greatly suppressing the weft Y from loosening due to vibration.

(1-3) The passage forming body 39 having the catch passage 38 for catching the front end of the weft yarn Y in a blow-bent shape is located in front of the guide passage 121 (front of the deformed reed 12 ). Since the front end of the weft yarn Y flying in the guide passage 121 can be introduced into the introduction port 261 on the front side of the guide passage 121, it is not necessary to pass the weft yarn through between adjacent reed blades 122. The distance between the reed blades is enlarged like the existing device that introduces the catch pipe. Therefore, there is no problem that the woven cloth W is damaged by increasing the distance between the reed blades.

(1-4) The passage forming body 39 is movable along the extending direction of the guide passage 121 in a state where the lock nut 20 is loosened. That is, the passage forming body 39 can change its installation position along the guide passage 121 . Therefore, even when the weaving width of the woven fabric changes, the passage forming body 39 can be provided at an appropriate position in the direction in which the guide passage 121 extends, and the change in the weaving width can be easily handled.

(1-5) The introduction port 261 inclined with respect to the extending direction of the guide passage 121 protrudes into the guide passage 121 . That is, the introduction port 261 of the catching passage 38 is directed in the opposite direction (direction opposite to the traveling direction) of the weft yarn Y and is connected to the guide passage 121 . The structure in which the introduction port 261 is connected to the guide passage 121 can effectively improve the reliability of introducing the leading end portion of the weft yarn Y flying in the guide passage 121 into the capture passage 38 .

(1-6) The air flow ejected from the stretching nozzle 30 intersects the air flow ejected from the stretching nozzle 312 . A part of the front end of the weft yarn Y introduced into the passage 263 of the first catching pipe 26 can be caught in the passage 273 of the second catching pipe 27 by the airflow blown out from the stretching nozzle 30 . That is, when the airflow ejected from the stretching nozzle 30 blocks the airflow flowing in the first catch pipe 26 and the groove 23 after being ejected from the stretching nozzle 312, the front end of the weft Y is blown into the second catcher. Inside the tube 27. As a result, the leading end portion of the weft yarn Y in the catching path 38 is caught while being bent in the catching path 38 . The structure in which the weft yarn Y is bent by the airflow jetted from the stretching nozzle 30 in the capture path 38 is preferable from the viewpoint that sufficient tension can be applied to the weft yarn Y.

Preferably, the flow velocity of the airflow ejected from the expansion nozzle 30 at the inlet 272 of the second capture pipe 27 is about twice the flow velocity of the airflow ejected from the expansion nozzle 312 at the outlet 262 of the first capture pipe 26 .

(1-7) The curve E in the graph of Fig. 5 is to reflect that the air injection pressure of the stretching nozzle 30 is set to 0.3MPa and when the air injection pressure of the stretching nozzle 312 changes within the range of 0-0.5MPa, the weft Y Changes in the frictional force with the passage forming body 39 . It can be seen from the graph in FIG. 5 that the frictional force is the largest when the air injection pressure of the stretching nozzle 312 is zero. That is, in the state where the front end of the weft yarn Y enters the second catching pipe 27, only the stretching nozzle 30 is used to inject air, compared with spraying air from both the stretching nozzles 312 and 30, it is advantageous to increase the frictional force to prevent the weft yarn Y from being accompanied by the air. The slack in which the jitter occurs.

(1-8) The air flow ejected from the stretching nozzle 312 of the nozzle forming body 31 provided on the rear surface of the deformed reed 12 will receive the action of the air flow ejected from the auxiliary nozzle 13 for weft insertion to fly the weft thread in the guide passage 121 The tip of Y is blown into the first catch pipe 26 . That is, the air flow ejected from the stretching nozzle 312 blows the front end of the weft yarn Y into the first catching pipe 26 while blocking the air flow flowing in the guide passage 121 ejected from the auxiliary nozzle 13 for weft insertion. . The airflow blown from the stretching nozzle 312 on the back side of the deformed reed 12 into the introduction port 261 of the catch passage 38 can improve the reliability of introducing the leading end of the weft yarn Y flying in the guide passage 121 into the catch passage 38 .

Preferably, the flow velocity of the airflow ejected from the stretching nozzle 312 at the inlet 261 of the first catch pipe 26 is near the inlet 261 of the first catch pipe 26 of the airflow ejected from the auxiliary nozzle 13 for weft insertion. about 5 times the flow rate.

(1-9) The first weft detector 14 and the second weft detector 15 have detection areas in the guide passage 121 , and the outlet 271 of the capture passage 38 faces the downstream side of the guide passage 121 so as to intersect the guide passage 121 .

As disclosed in Patent Document 4, in an air-jet loom, a first weft detector for detecting whether the weft has reached a predetermined position and a second weft detector for detecting whether the length of the inserted weft exceeds a predetermined length are generally used. Once the weft thread Y arrives at the inlet 261 of the first catch pipe 26, the first weft thread detector 14 can detect that the weft thread has arrived. Once the weft thread Y reaches the detection area of the second weft thread detector 15, the second weft thread detector 15 can detect that the weft thread has arrived. That is, in this embodiment, the first weft detector 14 is used to detect whether the weft has reached a predetermined position, and the second weft detector 15 is used to detect whether the length of the inserted weft exceeds a predetermined length. The second weft yarn detector 15 can also detect that the weft yarn Y is broken, or that the covered yarn covered on the surface of the stretched yarn is peeled off and scattered.

When the outlet 271 of the catch passage 38 is configured to be directed downstream of the guide passage 121 so as to intersect with the guide passage 121 , the second weft detector 15 can detect whether there is a weft Y in the guide passage 121 .

(1-10) If the nozzle forming body 31 provided on the rear side of the deformed reed 12 is in direct contact with the reed blade 122 , the vibration of the reed blade 122 will cause the nozzle forming body 31 and the reed blade 122 to wear. The buffer sheet 34 made of rubber interposed between the nozzle forming body 31 and the deformed reed 12 has the effect of preventing the nozzle forming body 31 from being in direct contact with the reed blade 122 to prevent abrasion.

(1-11) If the groove 23 of the unit main body 21 is not opened from the upper surface 211 and the front surface 213, it is difficult to attenuate the flow velocity of the airflow ejected from the stretch nozzle 312. If the airflow ejected from the stretching nozzle 312 and the airflow ejected from the stretching nozzle 30 collide with each other in the state where the flow velocity of the airflow ejected from the stretching nozzle 312 is not attenuated enough, it is not easy to make the front end of the weft Y to the second catch. The introduction port 272 of the tube 27 changes the direction of travel. In addition, if the flow velocity of the airflow jetted from the stretching nozzle 312 is not attenuated enough, the front end of the weft Y will not easily come into contact with the inner peripheral edge of the introduction port 272 of the second capture pipe 27, and the tension obtaining effect will be reduced.

The opening structure of the groove 23 from the upper surface 211 and the front surface 213 can play the role and effect of easily attenuating the flow velocity of the air flow ejected from the stretching nozzle 312 .

(1-12) When the deformed reed 12 retreats in the state shown in FIG. Exit slowly. And when the path forming body 39 retreating together with the deformed reed 12 reaches the vicinity of the position shown by the two-dashed line in FIG. 4 , the weft Y will contact the curved surface 216 . After beating up, it is not necessary to apply tension to the weft yarn Y, and it is preferable that the front end of the weft yarn Y can be smoothly withdrawn from the catching passage 38 . The curved surface 216 helps to reduce the resistance experienced by the weft thread Y as it exits the capture passage 38 .

Next, the second embodiment shown in Fig. 6 and Fig. 7 will be described. The same reference numerals are used for the same components as those in the first embodiment.

As shown in FIG. 7 , fitting holes 40 are formed in the unit main body 21A of the passage forming body 39A. The first capture pipe 26A fitted in the fitting hole 40 obliquely intersects the guide passage 121 so that the extending direction of the passage 263 is directed toward the downstream side of the guide passage 121 . The inclined inlet port 261A of the first capture pipe 26A faces the stretching nozzle 312 .

A fitting hole 41 extending from the inside of the groove 23 toward the side surface 214 is formed in the unit body 21A, and the second capture tube 27A is fitted into the fitting hole 41 . The jetting direction of the stretching nozzle 30 points to the inlet 272A of the second capture pipe 27A, and the airflow ejected from the stretching nozzle 30 crosses the groove 23 and blows into the inlet 272A of the second capture pipe 27A.

As shown in FIG. 6, a groove 42 is formed on the upper surface of the unit body 21A. The slot 42 is open from the side 214 .

As shown in FIG. 7 , the groove 42 and the fitting hole 41 are connected in series. A fitting hole 43 extending from the back surface 212 toward the groove 42 is formed in the unit body 21A, and the third capture tube 44 is fitted into the fitting hole 43. A stretching nozzle 45 is formed on a side wall of the unit body 21A where the groove 42 is formed. The spraying direction of the stretching nozzle 45 is directed to the introduction port 441 of the third capture pipe 44 . The stretching nozzle 45 communicates with the air supply hole 46, and the air supply hole 46 is connected to an unillustrated pressure air supply source through an air pipe 47 shown in FIG. 6 and an unillustrated electromagnetic switching valve. The airflow ejected from the stretching nozzle 45 crosses the groove 42 and is blown into the introduction port 441 of the third capture pipe 44 .

The third capture pipe 44 in the unit body 21A is parallel to the first capture pipe 26A, and the end side of the third capture pipe 44 faces the downstream side of the guide passage 121 so as to cross the guide passage 121 at a small angle. The outlet 442 of the third catch pipe 44 is located on the upstream side of the second weft detector 15 with respect to the guide passage 121 .

The passage 263 of the first catch pipe 26A, the groove 23, the passage 273 of the second catch pipe 27A, the groove 42, and the passage 443 of the third catch pipe 44 constitute the catch passage 48, which has an extension to the guide passage 121. The portion that extends in the direction where the directions intersect. The front end portion of the weft yarn Y in the first catch pipe 26A blown by the airflow ejected from the stretching nozzle 312 can be blown into the second catch pipe 27A by the airflow ejected from the stretching nozzle 30 . The front end of the weft yarn Y blown into the second catching pipe 27A can be blown into the third catching pipe 44 by the airflow ejected from the stretching nozzle 45 . The front end portion of the weft yarn Y caught in the catching passage 48 can reach near the end of the third catching pipe 44 .

The second embodiment has the same effects as items (1-1) to (1-4), items (1-6), and items (1-8) to (1-12) in the first embodiment. In addition, the catching passage 48 having more curved portions than the catching passage 38 of the first embodiment can more effectively suppress the chattering of the weft Y and further improve the tension applying performance. The improvement of the tension imparting performance contributes to reducing the consumption of air for catching the weft Y.

In addition, from the viewpoint of making the bending angle of the weft on the inner peripheral edge of the introduction port 261A of the first capturing pipe 26A and the bending angle of the weft on the inner peripheral edge of the outlet 262A of the first capturing pipe 26A larger, It is preferable to employ a structure in which the first capture pipe 26A intersects the guide passage 121 obliquely.

In addition, the structure in which the groove 42 of the unit body 21A is open to the upper surface 211 and the side surface 214 has an effect that the flow velocity of the air flow ejected from the stretching nozzle 30 is easily attenuated.

Next, a third embodiment of Fig. 8(a) and Fig. 8(b) will be described. The same reference numerals are used for the same components as those in the first embodiment.

The first capture tube 26B is fixed to the unit main body 21B constituting the passage forming body 39B. The introduction port 261B of the first capture pipe 26B protrudes into the guide passage 121 and faces in the direction opposite to the traveling direction of the weft Y (direction opposite to it). The outlet 271B of the second catch pipe 27B fixed to the unit main body 21B protrudes into the guide passage 121 and faces the traveling direction of the weft Y. The stretching nozzle 30 is directed to the introduction port 272B of the second capture pipe 27B.

The passage 263 of the first capture pipe 26B, the groove 23 , and the passage 273 of the second capture pipe 27B constitute a capture passage 49 having a portion extending in a direction intersecting the direction in which the guide passage 121 extends. The front end portion of the weft yarn Y flying in the guide passage 121 can be blown into the first catch pipe 26B by the airflow ejected from the sub-nozzle 13 for weft insertion (see FIG. 1( a )). The front end of the weft yarn Y blown into the first catch pipe 26B can be blown into the second catch pipe 27B by the air flow ejected from the stretching nozzle 30 .

An elastic ring 50 made of rubber which is an elastic material is fitted to the first capture pipe 26B which is a cylindrical portion forming the inlet 261B of the capture passage 49 . In addition, an elastic ring 51 made of rubber as an elastic material is fitted into the second catch pipe 27B. The elastic rings 50 , 51 are in contact with the walls of the reed 122 forming the guide passage 121 .

The third embodiment has the same effects as those of item (1-1), items (1-3) to (1-6), item (1-9), and item (1-11) in the first embodiment. In addition, since the nozzle forming body 31 in the first embodiment is unnecessary, the structure becomes simpler.

Moreover, in the guide passage 121, the elastic ring 50 is filled between the outer peripheral surface of the 1st catch pipe 26B, and the wall of the reed blade 122. As shown in FIG. Therefore, the leading end portion of the weft Y can be guided more reliably into the first catch tube 26B. Furthermore, since the elastic ring 50 prevents direct contact between the reed blade 122 and the first catch pipe 26B, it is possible to avoid abrasion caused by the vibration of the reed blade 122 during beating-up. The elastic ring 51 also has the effect of avoiding wear.

The present invention can also be implemented in the fourth, fifth and sixth embodiments respectively shown in FIGS. 9 , 10 and 11 . In these embodiments, the same reference numerals are used for the same components as those in the first embodiment.

In the fourth embodiment shown in FIG. 9 , a capture unit 16C constituting a passage forming body is incorporated in the first weft detector 14 . Since the first weft detector 14 is provided outside the side yarn T2, the distance between the ground warp T1 and the side yarn T2 can be made smaller than in the first embodiment. This is beneficial to shorten the length of the weft thread for one weft picking and reduce the weft thread consumption.

In the fifth embodiment shown in FIG. 10, the second capture pipe 27D fixed to the unit body 21D constituting the passage forming body 39D is perpendicular to the groove 23, and the installation direction of the second weft detector 15 is opposite to that of the first embodiment. . That is, the detection area of the second weft detector 15 is set on the extension line of the passage 273 of the second catch pipe 27D. The passage 263 of the first capture pipe 26 , the groove 23 , and the passage 273 of the second capture pipe 27D constitute the capture passage 52 . When the weft insertion length of the weft Y is too long or the weft is broken, the weft Y passes through the detection area of the second weft detector 15 .

In the sixth embodiment shown in FIG. 11 , the second capture pipe 27E fixed to the unit main body 21E constituting the passage forming body 39E is perpendicular to the passage 53 opened from the front surface 213 and directed upward. The ejection direction of the stretch nozzle 30E formed on the bottom surface of the passage 53 is directed to the introduction port 272E of the second capture pipe 27E. The front end of the weft yarn Y introduced into the first catching pipe 26 can be blown into the second catching pipe 27E by the airflow ejected from the stretching nozzle 30E. The passage 263 of the first capture pipe 26 , the passage 53 , and the passage 273 of the second capture pipe 27E constitute the capture passage 54 .

Next, a seventh embodiment of Figs. 12 to 14(b) will be described. The same reference numerals are used for the same components as those in the first embodiment.

As shown in FIG. 12 , a pair of bolts 19 and lock nuts 20 make the catch unit 55 tightly engaged on the mounting surface 17 of the sley 11 .

As shown in FIG. 14( b ), a pair of fitting holes 56 and 57 are formed in the capture unit 55 . The fitting hole 56 penetrates from the upper surface 551 to the lower surface 552 of the capture unit 55 . The fitting hole 57 penetrates the fitting hole 56 from the side surface 553 (the side surface on the side of the second weft detector 15 ) of the capture unit 55 . The first capture tube 58 is fitted and fixed in the fitting hole 56 , and the second capture tube 59 is fitted and fixed in the fitting hole 57 . The first catch tube 58 is fitted in the middle of the fitting hole 56 .

As shown in FIG. 14( a ), the protruding portion 581 of the first capture pipe 58 protruding from the fitting hole 56 is curved. As shown in FIG. 13 , an introduction port 582 having an obliquely cut shape is formed at an end portion of the protruding portion 581 . The introduction port 582 protrudes into the guide passage 121 and faces the side yarn T2. That is, the introduction port 582 protrudes into the guide passage 121 so as to be connected to the guide passage 121 in a direction opposite to the direction in which the weft yarn Y travels.

The passage in the first catching pipe 58 consists of the passage 583 from the guide passage 121 toward the front of the guide passage 121 (the front of the deformed reed 12), and the downward descending passage toward the front of the guide passage 121 (the front of the deformed reed 12). 584 constitute. The passage 583 extends in a direction perpendicular to the direction in which the guide passage 121 extends.

An outlet 591 in an obliquely cut shape is formed at the protruding end portion of the second catch pipe 59 protruding from the fitting hole 57 . The outlet 591 protrudes into the guide passage 121 . The outlet 591 faces the downstream side of the guide passage 121 so as to intersect the guide passage 121 , and the outlet 591 is located upstream of the second weft detector 15 with respect to the guide passage 121 .

As shown in FIG. 14( b ), an air supply hole 60 is formed on a side surface 554 of the capture unit 55 , and the air tube 29 is connected to the air supply hole 60 . The air pipe 29 is connected to an unillustrated air supply source through an unillustrated electromagnetic switching valve.

An expansion nozzle 61 is formed on the peripheral wall of the capture unit 55 forming the fitting hole 56 . The stretching nozzle 61 communicates with the air supply hole 60 , and the pressurized air sent into the air supply hole 60 through the air pipe 29 is ejected from the stretching nozzle 61 . The spraying direction of the stretching nozzle 61 is directed to the inlet 592 of the second capture pipe 59 , and the airflow ejected from the stretching nozzle 61 passes through the fitting hole 56 transversely and blows into the inlet 592 of the second capture pipe 59 .

The injection of air from the stretching nozzles 312 and 61 starts before the front end of the weft Y reaches the introduction port 582 of the first capture pipe 58 . The front end portion of the weft yarn Y flying in the guide passage 121 can be blown into the first catch pipe 58 by the airflow ejected from the stretching nozzle 312 . The tip end of the weft Y blown into the first catching pipe 58 enters the fitting hole 56 through the outlet 585 of the first catching pipe 58 . The front end of the weft yarn Y entering the fitting hole 56 through the outlet 585 is blown toward the intersection of the fitting hole 56 and the fitting hole 57 .

In the following description, the portion of the fitting hole 56 located below the junction of the fitting hole 56 and the fitting hole 57 is referred to as a branch passage 561 . The front end of the weft Y that reaches the intersection of both the fitting hole 56 and the fitting hole 57 is blown into the introduction port 592 of the second capture pipe 59 by the airflow jetted from the stretching nozzle 61 . When the front end of the weft Y reaches the middle of the second catch pipe 59, the weft is prevented from being drawn out from the weft length measuring storage device.

The ejection of the air from the stretching nozzle 312 is stopped after the front end of the weft Y is considered to be blown into the second catch pipe 59 . The jet airflow acting on the front end portion of the weft yarn Y blown into the second catching duct 59 imparts tension to the weft yarn Y.

The passage 583 and descending passage 584 in the first catch pipe 58 and the passage 593 in the second catch pipe 59 constitute a catch passage 62 having a portion extending in a direction intersecting the direction in which the guide passage 121 extends. A descending passage 584 extending downward from the front of the guide passage 121 is included as part of the capture passage 62 . The outlet 562 (the outlet of the fitting hole 56 ) of the branch passage 561 continuing to the end of the descending passage 584 is opened only from below. That is, the whole of the outlet 562 of the branch passage 561 can be seen from below in the vertical direction. The introduction port 592 functions as a direction change port of the capture passage located downstream with respect to the connecting portion of both the branch passage 561 and the descending passage 584 .

The capture unit 55 , the first capture tube 58 , and the second capture tube 59 constitute a channel forming body 63 that forms a capture channel 62 . The first catch pipe 58 is a cylindrical portion extending into the guide passage 121 so that the introduction port 582 of the catch passage 62 is directed in the direction opposite to the traveling direction of the weft Y and connected to the guide passage 121 .

The front end portion of the weft yarn Y that is introduced into the capture passage 62 is connected to the inner peripheral edge 586 (as shown in FIG. 13 ) of the introduction port 582 of the first capture pipe 58 and the inner peripheral edge 587 (as shown in FIG. 14 ( b ) of the outlet 585 . ), the inner peripheral edge 594 (as shown in FIG. 14( b )) of the introduction port 592 of the second capture pipe 59 contacts and bends at a large angle. The weft yarn Y is beat up in a state where the front end portion of the weft yarn Y is caught in a curved shape in the catching passage 62 .

The seventh embodiment has the following effects in addition to the same effects as those of items (1-1) to (1-6) and items (1-8) to (1-10) in the first embodiment.

(7-1) In order to avoid interference during beating-up between the temple device (omitted in the figure) provided for preventing the fabric W near the cloth fell Wo from shrinking and the passage forming body, the extension of the guide passage 121 The passage forming body is provided on the downstream side of the installation position of the temple device in the direction (weft insertion direction). In this way, the length of the weft thread to be inserted in this case is the same as that in the case where the passage forming body is provided near the same position as that of the temple device in the direction of extension of the guide passage 121 (weft insertion direction). than to be longer. This is not suitable for saving the usage of weft thread.

A part of the capture passage 62 includes a passage 583 extending from the introduction port 582 protruding into the guide passage 121 toward the front of the guide passage 121 , and a descending passage 584 extending downward from the passage 583 . That is, the capture path 62 has a shape that faces slightly forward of the guide path 121 and then immediately downward. The upper portion of the passage forming body 63 of the capturing passage 62 having such a shape can protrude forward from the guide passage 121 smaller than, for example, the upper portion of the passage forming body 39 (unit body 21 ) in the first embodiment. . This is effective to avoid interference with the temple device.

That is, even in the case where the passage forming body 63 is arranged near the same position as that of the temple device in the extending direction (weft insertion direction) of the guide passage 121, it is possible to prevent the passage forming body 63 and the temple device from colliding with each other. put one's oar in.

(7-2) The weft end Ye (as shown in FIG. 13 ) constituting the woven discarded selvedge W1 is the end of the weft caught in the catching passage of the passage forming body during beating. When beating up, the passage forming body approaches the weft ends Ye near the cloth fell Wo, and at this time, the weft ends Ye constituting the woven discarded selvedge W1 enter the catching passage 62 . Then, the tip part Ye of the weft thread which entered into the catching passage 62 prevents the original weft thread which should be caught by the catching passage of the passage forming body from obtaining an appropriate tension.

The branch passage 561 continuous with the end of the descending passage 584 has the same function as that of the groove 23 in the first embodiment. The outlet 562 of the branch passage 561 is provided on the lower surface 552 of the capture unit 55 . That is, the outlet 562 of the branch passage 561 that opens to the outside of the passage forming body 63 opens only downward, and the front end Ye of the weft yarn constituting the discarded cloth edge W1 does not enter the branch passage 561 from the outlet 562 . The configuration in which the outlet 562 of the branch passage 561 is opened only downward prevents the front end Ye of the weft yarn constituting the discarded cloth trim W1 from entering the branch passage 561 .

Next, the eighth embodiment shown in Fig. 15(a) and Fig. 15(b) will be described. 12 to 14(b) of the seventh embodiment and the same components as those of the third embodiment of FIGS. 8(a) and 8(b) are denoted by the same reference numerals.

A first catch tube 58A is fixed to the catch unit 55 constituting the passage forming body 63A, and the introduction port 582A of the first catch pipe 58A extends into the guide passage 121 and faces in the direction opposite to the traveling direction of the weft Y (opposite direction thereto). direction).

The passage 583A of the first capture pipe 58A, the descending passage 584 , and the passage 593 of the second catch pipe 59 constitute a capture passage 64 having a portion extending in a direction intersecting the direction in which the guide passage 121 extends. The front end portion of the weft yarn Y flying in the guide passage 121 can be blown into the first catch pipe 58A by the airflow ejected from the auxiliary nozzle 13 for weft insertion (see FIG. 1( a )). The front end of the weft yarn Y blown into the first catch pipe 58A is blown into the second catch pipe 59 by the airflow that can be blown out from the stretching nozzle 61 .

An elastic ring 50 made of rubber, which is an elastic material, is fitted into the first capture tube 58A that is a cylindrical portion that forms the introduction port 582A of the capture passage 64 . The elastic ring 50 is in contact with the wall of the reed blade 122 forming the guide passage 121 .

The eighth embodiment has the same effects as those of the third and seventh embodiments.

Next, a ninth embodiment of Fig. 16(a) and Fig. 16(b) will be described. The same reference numerals are used for the same components as those of the seventh embodiment shown in FIGS. 12 to 14(b).

A fitting hole 56 penetrates through the capturing unit 55B constituting the passage forming body 63B, and a capturing tube 58B is fitted and fixed in the fitting hole 56 . The capture tube 58B passes through the fitting hole 56, and the outlet 585B of the capture passage 58B opens downward outside the capture unit 55B.

The passage in the catching passage 58B is the passage 583B facing the front of the guide passage 121 (the front of the deformed reed 12) from the inside of the guide passage 121, and the passage 583B facing downward while facing the front of the guide passage 121 (the front of the deformed reed 12). The trapping path 65 constituted by the descending path 584B. The capturing passage 65 opens only downward of the passage forming body 63B. That is, the entire outlet 585B of the capture passage 65 can be seen from below in the vertical direction. Like the passage 583 of the seventh embodiment, the passage 583B extends in a direction perpendicular to the direction in which the guide passage 121 extends.

As shown in FIG. 16( b ), an air supply hole 60 is formed on the side surface 554 of the capture unit 55B, and the air tube 29 is connected to the air supply hole 60 . The air pipe 29 is connected to an unillustrated compressed air supply source through an unillustrated electromagnetic switching valve.

The expansion nozzle 61B is formed on the surrounding wall of the capturing unit 55B and the capturing tube 58B forming the fitting hole 56. The stretching nozzle 61B communicates with the air supply hole 60, and the pressurized air sent into the air supply hole 60 through the air pipe 29 is ejected from the stretching nozzle 61B. The ejection direction of the extension nozzle 61B is directed toward the outlet 585B side of the capture passage 58B, and the airflow ejected from the extension nozzle 61B is ejected downward in the descending passage 584B in the capture passage 58B.

The second weft detector 15 has a detection area in the extension of the exit 585B of the capture path 58B, and detects whether or not the weft Y has reached the extension of the exit 585B. When the weft yarn Y is super long or the weft yarn is broken, the weft yarn Y will pass through the detection area of the second weft yarn detector 15 .

The ninth embodiment has items (1-1), items (1-3), items (1-4), items (1-10) in the first embodiment and items (7-10) in the seventh embodiment. 1), Item (7-2) has the same effect.

Next, the tenth embodiment shown in Fig. 17(a) and Fig. 17(b) will be described. The same reference numerals are used for the same components as those in the first embodiment.

In the unit body 21 constituting the capture unit 16 , a branch passage 66 extending from the lower surface 210 to the inside of the fitting holes 24 and 25 is formed. The branch passage 66 constituting the capturing passage 38F together with the passages 263 and 273 opens to the lower surface 210 of the capturing unit 16 constituting the passage forming body 39F (ie, below the passage forming body 39F). The branch passage 66 has the same function as that of the groove 23 in the first embodiment. The outlet 651 of the branch passage 66 that opens to the outside of the passage forming body 39F opens only downward. That is, the whole of the outlet 651 of the branch passage 66 can be seen from below in the vertical direction. The front end Ye of the weft yarn constituting the discarded selvedge W1 does not enter the branch passage 66 from the exit 651 . The structure in which the outlet 651 of the branch passage 66 is opened only downward prevents the front end Ye of the weft yarn constituting the discarded cloth edge W1 from entering the branch passage 66 .

The present invention can also be implemented in the following implementation forms.

In the second embodiment, the blowing of air from the stretching nozzles 312 and 30 may be stopped after the front end of the weft Y is blown into the third catch pipe 44 . In this way, the same effect as that of item (1-7) in the first embodiment can be obtained.

In the first embodiment, instead of the groove 23, a passage opening only to the front surface 213 may be used.

In the second embodiment, instead of the groove 42, a passage opening only to the side surface 214 may be used.

In the first embodiment, the first catch pipe 26 and the second catch pipe 27 may be integrally formed with the unit body 21 .

In the second embodiment, the first catch pipe 26A and the second catch pipe 27A may be formed integrally with the unit main body 21A.

Claims (12)

1. weft tension applicator, utilize picking with under the air flow jetting effect of nozzle with parallel in the air-jet loom of path of navigation picking, have the passage forming body that forms stretch nozzle and stretch nozzle, utilize from the air-flow of said stretch nozzle ejection for said parallel being captured in the said stretch nozzle parallel is imported in the stretch nozzle, it is characterized in that

Said passage forming body is arranged on front one side of said path of navigation, and it is provided with the position and can changes along said path of navigation, and at least a portion of said stretch nozzle is extended on the direction that the bearing of trend with said path of navigation intersects,

The outlet that said stretch nozzle has the introducing port that links to each other with said path of navigation and is disposed at said path of navigation,

Said passage forming body comprises the pipe that the tube portion that forms said introducing port and formation are explained,

Said tube portion with said introducing port towards the reciprocal mode of parallel direct of travel and between lower wall surface on this one and the said path of navigation and inboard wall interstitial state, stretch in the said path of navigation,

Said pipe stretches in the said path of navigation to be formed with the state in space between the last lower wall surface of this pipe and said path of navigation and the inboard wall,

At the upstream side of said introducing port, be provided with and detect parallel and whether arrive in the said path of navigation both the 1st weft detectors of allocation, in the downstream of being explained, whether the length that is provided with the parallel that detects institute's picking exceeds both the 2nd weft detectors of measured length.

2. as the said weft tension applicator of claim 1, it is characterized in that, form the wall of the said passage forming body of said stretch nozzle, have at least two bends that are intended to make said curvature of parallel.

3. as claim 1 or 2 said weft tension applicators, it is characterized in that said stretch nozzle is arranged on the said passage forming body, this stretch nozzle produces said air-flow in said stretch nozzle, and makes parallel crooked in this stretch nozzle.

4. as claim 1 or 2 said weft tension applicators, it is characterized in that, said stretch nozzle is arranged on the said passage forming body that makes parallel bending in said stretch nozzle, said passage forming body has the consecutive tributary circuit in position midway with said stretch nozzle, this tributary circuit only has from the outlet of the lower opening of passage forming body, said stretch nozzle has and is positioned at the two the direction in downstream of connecting portion of this stretch nozzle and said tributary circuit and changes mouthful, and the air flow jetting direction of said stretch nozzle changes mouthful towards said direction.

5. as claim 1 or 2 said weft tension applicators, it is characterized in that,

Said stretch nozzle comprise as its at least a portion, from said path of navigation or from the place ahead of this path of navigation towards the decline path of below,

Said stretch nozzle is arranged on the said passage forming body and can makes parallel crooked in said stretch nozzle, said passage forming body has the terminal consecutive tributary circuit with said decline path, this tributary circuit only has from the outlet of the lower opening of passage forming body, the direction that said stretch nozzle has the downstream that is positioned at said decline path changes mouth, and the air flow jetting direction of said stretch nozzle changes mouth towards said direction.

6. as claim 1 or 2 said weft tension applicators, it is characterized in that, said stretch nozzle is arranged on the back side one side of the reed that forms said path of navigation, and air-flow is horizontally through the introducing port that is blown into said stretch nozzle behind the said path of navigation after this stretch nozzle ejection.

7. as the said weft tension applicator of claim 6, it is characterized in that, between the back side of said stretch nozzle and said reed, be provided with elastomeric material.

8. as claim 1 or 2 said weft tension applicators, it is characterized in that, said stretch nozzle is the side among the 1st stretch nozzle and the 2nd stretch nozzle at least, and the air flow jetting direction of the 1st stretch nozzle and the air flow jetting direction of the 2nd stretch nozzle intersect in said stretch nozzle.

9. as the said weft tension applicator of claim 8, it is characterized in that, said passage forming body has the consecutive tributary circuit in position midway with said stretch nozzle, this tributary circuit is at the outside opening of passage forming body, and the air flow jetting direction of said the 1st stretch nozzle and the air flow jetting direction of said the 2nd stretch nozzle intersect at the two connecting portion place of said stretch nozzle and said tributary circuit.

10. as claim 1 or 2 said weft tension applicators, it is characterized in that the explain of said pipe is with the mode that intersects with the said path of navigation downstream towards this path of navigation.

11., it is characterized in that said stretch nozzle only has from the outlet of the lower opening of said passage forming body as claim 1 or 2 said weft tension applicators.

12. as claim 1 or 2 said weft tension applicators, it is characterized in that said air-jet loom possesses the slay with support slot, said picking all is installed on the said slay by said support slot with nozzle and said passage forming body.

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