JP7140640B2 - Air tuck-in device in air jet loom - Google Patents

Description

The present invention is an air tuck-in device provided in an air jet loom and performing a tuck-in operation by jetting air from a tuck-in nozzle, comprising a pair of tuck-in heads provided on the yarn feeding side and the yarn counter-feeding side and having the tuck-in nozzles. , a drive shaft that is continuously rotated in one direction in synchronization with the main shaft of the loom, and a reciprocating mechanism that supports at least the tuck-in head on the side opposite to the yarn feeding side and uses the drive shaft as a drive source, A reciprocating motion mechanism is provided for reciprocating the tuck-in head between a first position on the fabric fell side and a second position spaced from the fabric fell in the front-rear direction, wherein the first position moves along with the reciprocating motion, The tuck-in head overlaps the cloth fell, and the second position is the position where the tuck-in head is separated from the cloth fell on the side opposite to the reed side. relates to an air tuck-in device in

As a tuck-in device provided in an air jet loom, a tuck-in operation such as folding back (tucking in) the end of an inserted weft into the warp shed into which the succeeding weft is inserted by air jet is performed on the feeding side and the counter-feeding side. There is a so-called air tuck-in device which is a tuck-in device of an air injection type performed on the yarn side. The tuck-in device includes a tuck-in head having a tuck-in nozzle for jetting air. The tuck-in device is provided with tuck-in heads on the yarn feeding side and the yarn counter side.

By the way, in an air jet loom equipped with such an air tuck-in device, when the weaving width of the woven fabric to be woven is changed, the tuck-in head is adjusted so as to correspond to the position of the cloth edge after the change. is changed in the weave width direction. Incidentally, in this case, in a general loom, the arrangement of the tuck-in head on the non-supply side is changed. The placement of the side tuck-in head is changed.

When the arrangement of the tuck-in head is changed in the weaving width direction as described above, the reed is generally also changed in order to avoid interference between the tuck-in head and the reed (reed dents) during beating. That is, when the arrangement of the tuck-in head is changed due to the change of the weaving width, the reed is also changed to have a width dimension corresponding to the changed weaving width. However, in that case, it is necessary to prepare a plurality of reeds having width dimensions corresponding to each of a plurality of assumed weaving widths.

On the other hand, as an air tuck-in device for the purpose of eliminating the need for preparing a plurality of reeds, tuck-in is performed between a tuck-in position where the tuck-in operation is performed and a retracted position for avoiding the interference in the longitudinal direction of the loom. A so-called retraction type air tuck-in device configured to reciprocate the head has been conventionally proposed. As an example of such a retractable air tuck-in device, there is a device disclosed in Patent Document 1 (hereinafter referred to as "conventional device").

Specifically, the conventional device is configured to reciprocate the tuck-in head (tuck-in nozzle) as described above by a reciprocating mechanism having a drive shaft as a drive source. The reciprocating mechanism is composed of a cam mechanism as a drive mechanism and a link mechanism that transmits the motion of the cam mechanism to the tuck-in head.

Regarding the structure of the reciprocating mechanism, the cam mechanism consists of a cam mounted so as not to rotate relative to the drive shaft, and a lever (cam lever) provided to swing back and forth in the loom according to the rotation of the cam. consists of Also, the link mechanism has a link rod connected to the cam lever in such a manner that a pin provided therein is inserted into a long hole in the cam lever at one end, and a link rod pivoted at one end to the other end of the link rod. and a slide member connected to the link rod at and supported on the loom so as to be slidable in the longitudinal direction.

In the conventional device, a nozzle (tuck-in head) that jets air for tuck-in is supported in a manner fixed to the other end of the slide member. With this configuration, in the conventional device, the slide member connected to the cam lever via the link rod slides in the longitudinal direction as the cam lever swings as the cam rotates, thereby moving the tuck-in head as described above. reciprocate to.

EP-A-0534429

By the way, the retractable tuck-in device is based on the premise that the arrangement of the tuck-in head is changed in the weaving width direction in accordance with the change of the weaving width as described above. Therefore, even in a loom equipped with the above-described conventional device, when the weaving width of the woven fabric to be woven is changed, the arrangement of the tuck-in head is naturally changed in the weaving width direction in accordance with the change.

In the case of changing the arrangement of the tuck-in head in such a manner, the slide member, which is a member that directly supports the tuck-in head, is moved in the weave width direction in the conventional apparatus configured as described above. However, in the conventional device, since the slide member is connected to the drive mechanism (cam mechanism) by the link rod, when changing the arrangement of the tuck-in head, not only the slide member but also its It becomes necessary to move the drive mechanism connected to the slide member in the weaving width direction. That is, in the conventional device, the entire reciprocating mechanism must be moved in the weaving width direction when the arrangement of the tuck-in head is changed in accordance with the weaving width change. Therefore, there is a problem that a great deal of labor is required to change the arrangement of the tuck-in head.

In view of the circumstances as described above, the present invention provides an air tuck-in device for an air jet loom having a reciprocating motion mechanism as described above, in which the arrangement of the tuck-in head can be easily changed in the weaving width direction. intended to

The present invention provides an air jet loom comprising a reciprocating motion mechanism for reciprocating the tuck-in head between a first position on the cloth fell side and a second position spaced apart from the cloth fell in the longitudinal direction of the loom. Assuming an air tuck-in device in

The "first position" referred to in the present invention is a position where the tuck-in head overlaps the cloth fell in the longitudinal direction of the loom as the tuck-in head reciprocates. More specifically, the first position is a position at or near which the tuck-in head is positioned so that the tuck-in operation can be performed. This is the position where the cloth fell is positioned within the existence range of the slit formed in the tuck-in head. Further, the "second position" referred to in the present invention is a position where the tuck-in head moves away from the cloth fell to the side opposite to the reed in the longitudinal direction of the loom as the tuck-in head reciprocates. More specifically, the second position is a retracted position (retracted position) where the tuck-in head does not interfere with the reed even if the reed reaches the most forward position while the tuck-in head is positioned at that position. be.

In the air tuck-in device according to the present invention, the reciprocating mechanism includes an intermediate transmission shaft that is rotatably supported by the loom frame and extends in the weaving width direction, and connects the intermediate transmission shaft and the drive shaft. a reversing drive unit for reciprocatingly reversing the intermediate transmission shaft; a swing arm that supports the tuck-in head at the other end; and a drive that connects the swing arm and the intermediate transmission shaft and is attached to the intermediate transmission shaft so that its position can be changed in the weaving width direction. and a transmission unit.

Further, in the air tuck-in device according to the present invention, the support shaft may be arranged in the vicinity of the cloth fell including right above the cloth fell in the front-rear direction. Further, in the air tuck-in device, the drive transmission portion includes a first connection lever attached at one end to the intermediate transmission shaft so as not to rotate relative to the intermediate transmission shaft, and one end rotatable with respect to the other end of the first connection lever. a second connecting lever operably connected and rotatably connected at the other end to said swing arm.

Further, in the case where the drive transmission portion is composed of the first connecting lever and the second connecting lever, the connecting portion between the swing arm and the second connecting lever is arranged in the longitudinal direction of the swing arm. may be located on the other end side of the middle portion of the . Further, in the case where the drive transmission portion is configured in such a manner, the tuck-in head is positioned at one of the first position and the second position, and the first connecting lever and the The position of the connecting portion and the length dimension of both connecting levers are set so that the angle formed with the second connecting lever is approximately 90°, and the tuck-in head is positioned at the other position with respect to the one position. The position of the support shaft may be set so that the angle is approximately 90° even in the state of .

Further, in the air tuck-in device according to the present invention, the reversing drive section may be a multi-joint link mechanism including a crank mechanism attached to the drive shaft. Furthermore, when the reversing drive unit is configured by the multi-joint link mechanism including the crank mechanism, the crank mechanism includes a crank hub attached to the drive shaft so as not to rotate relative to the drive shaft. The mounting phase of the crank hub may be configured to be changeable.

In the reciprocating motion mechanism in the air tuck-in device according to the present invention, the tuck-in head is supported by the swinging arm, and the drive transmission section is connected to the swinging arm so as to give the swinging arm a reciprocating swinging motion. In the reciprocating mechanism, the reversing drive portion corresponding to the drive mechanism of the conventional device is directly connected to the link rod that reciprocates the slide member supporting the tuck-in head as in the conventional device. Instead, it is connected to the drive transmission portion via an intermediate transmission shaft provided so as to extend in the weaving width direction. That is, in the reciprocating motion mechanism in the tuck-in device according to the present invention, the reversing drive section reciprocates and reversely drives the intermediate transmission shaft, and the swing arm is reciprocatingly driven by using the intermediate transmission shaft that reciprocates in such a reciprocating motion as a drive source. It has a configuration that

Moreover, in the reciprocating motion mechanism, the mounting position of the drive transmission portion connected to the swing arm with respect to the intermediate transmission shaft can be changed in the weaving width direction, which is the axial direction of the intermediate transmission shaft. , and the arrangement of the drive transmission portion and the swing arm to which the drive transmission portion is connected can be changed in the weaving width direction. That is, the reciprocating mechanism has a configuration in which only the swing arm supporting the tuck-in head and the drive transmission section connected to the swing arm are movable in the weaving width direction.

Therefore, according to the air tuck-in device of the present invention, when the arrangement of the tuck-in head is changed according to the change of the weaving width, it is not necessary to move the entire reciprocating mechanism unlike the conventional device, and the reciprocating mechanism does not need to be reversely driven. The arrangement of the tuck-in head can be changed by moving only the swing arm that directly supports the tuck-in head and the drive transmission section that is attached to the swing arm without changing the arrangement of the tuck-in head. be done. As a result, the tuck-in head can be easily repositioned in the weaving width direction without requiring much labor as compared with the conventional device.

Further, in the air tuck-in device according to the present invention, the tuck-in head is supported by the other end of the swing arm that can swing around the axis of the support shaft on the one end side, and the reciprocating motion of the tuck-in head is This is done by swinging around the axis of the support shaft. In addition, by configuring the air tuck-in device so that the support shaft is arranged within the range near the cloth fell, the support shaft is arranged outside the range. In comparison, the trajectory of the tuck-in head that makes the reciprocating rocking motion becomes more parallel to the warp line. As a result, even in a configuration in which the tuck-in head is oscillatingly displaced, the first position at which the tuck-in operation can be performed is closer to the warp line, and as a result, the tuck-in operation can be performed more appropriately. You can realize the state of being done.

Further, in the air tack-in device according to the present invention, the drive transmission portion is constructed by the first connecting lever and the second connecting lever as described above, so that the drive transmission portion is constituted by a single connecting lever. It is possible to extend the life of the swing arm and the drive transmission section as compared with the case of using the same.

Specifically, in the case where the drive transmission portion is configured by a single connecting lever, the connecting structure between the swinging arm and the connecting lever must be a connecting portion provided on one side of the swinging arm in order to allow the swinging arm to swing. must be displaceable in the other longitudinal direction. This is because the swinging fulcrum of the swinging arm and the connecting lever are different, so if a connecting portion is provided at a predetermined position on the swinging arm, for example, the swinging fulcrum of the connecting lever (intermediate transmission shaft This is because the distance to the center of the arm changes as the swing arm swings. As such a connection structure, for example, a connecting pin is provided as a connecting portion on the swing arm, and a long hole extending in the longitudinal direction is formed in the connecting lever, and the connecting pin is inserted into the long hole. A configuration is conceivable in which both are connected in the form of being connected. In the case of the connection structure, the connection pin slides in the long hole as the swing arm swings, and the distance from the swing fulcrum of the connection lever to the connection portion changes.

On the other hand, if the drive transmission section is composed of the first connection lever and the second connection lever as described above, the drive transmission section changes the angle formed by the first connection lever and the second connection lever. By doing so, the linear distance between the one end of the first connecting lever and the other end of the second connecting lever can be changed. Therefore, according to this configuration, even if the connection portion of the swing arm is connected to the other end of the drive transmission portion (second connection lever) so as not to be displaced, the first movement is caused by the swing of the swing arm. A change in the distance between the connecting portion and the center of the intermediate transmission shaft caused by the swinging of the second connecting lever is absorbed by the change in the angle formed by the second connecting lever and the second connecting lever. As a result, the drive transmission section can be configured without a portion that is slidably displaced as described above, so that wear associated with the sliding does not occur. Longer life can be achieved.

Further, in the case where the drive transmission portion is configured in such a manner, the position of the connecting portion between the swing arm and the second connecting lever is set to the other end side of the intermediate portion in the longitudinal direction of the swing arm. By doing so, it is possible to extend the service life of the bearing provided in the connecting portion. That is, by setting the position of the connecting portion in such a manner, the distance from the support shaft that supports the swing arm to the connecting portion becomes greater, so that the moment load acting on the bearing (the swinging force that supports the tuck-in head) increases. The force for rocking the arm) becomes smaller, and as a result, the service life of the bearing can be extended.

Further, in the case where the drive transmission portion is constituted by the first connecting lever and the second connecting lever as described above, the air tuck-in device is arranged so that the tuck-in head is positioned at the first position and the second position. The position of the connecting portion, the length dimension of both connecting levers, and the position of the support shaft are set so that the angle formed by both connecting levers is approximately 90° in the state of the intermediate transmission shaft. The reciprocating rotation makes it possible to more efficiently transmit motion when swinging the swing arm. As a result, the reciprocating motion of the tuck-in head is efficiently performed by the reciprocating motion mechanism, and the load on the reciprocating motion for performing the predetermined reciprocating motion is reduced.

Further, in the air tuck-in device according to the present invention, the manufacturing cost of the air tack-in device according to the present invention is reduced by configuring the reversing drive part with a multi-joint link mechanism that converts the rotation of the drive shaft into reciprocating motion by means of the crank mechanism. be able to.

Specifically, in order to perform the tuck-in operation more stably, the reversal drive section is configured to generate a dwell period for allowing the tuck-in head to stay in the vicinity of the first position as much as possible. It is desirable that On top of that, as a configuration for obtaining such a dwell period, it is generally considered to use a cam mechanism, but if a cam mechanism is used as a device configuration, the device will be relatively expensive. becomes. On the other hand, if a multi-joint link mechanism including a crank mechanism as described above is used as the configuration of the reversing drive section, and the reversing drive section is configured so as to generate the dwell period, the cam mechanism is used as described above. In comparison, the reversal drive unit is inexpensive. Therefore, the manufacturing cost of the air tuck-in device can be reduced by configuring the reversing drive unit in such a manner.

Further, when the reversing drive section is configured in such a manner, by configuring the crank mechanism so that the mounting phase of the crank hub with respect to the drive shaft in the crank mechanism can be changed, the tuck-in head can be adjusted to the first position when the weaving conditions are changed. It becomes possible to easily cope with a change in the timing located at the position of .

Specifically, when the weaving conditions for weaving are changed, the optimum timing for performing the tuck-in operation may change accordingly. In that case, in a loom equipped with a retractable tuck-in device in which the tuck-in head reciprocates, it is necessary to change the timing at which the tuck-in head is positioned at the first position. Therefore, in the air tuck-in device of the present invention, when the reversing drive unit is configured by a multi-joint link mechanism including a crank mechanism as described above, if the crank mechanism is configured so that the attachment phase can be changed, the attachment Since it is possible to change the phase of the reciprocating motion of the tuck-in head simply by changing the phase, it is possible to easily respond to changes in the timing at which the tuck-in head is positioned at the first position due to changes in weaving conditions. becomes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an example of an air-jet loom on which the present invention is based; The side view which shows an example of a tuck-in head. The front view which shows an example of the reciprocating motion mechanism in the air tuck-in apparatus by this invention. The left side view which shows an example of the reciprocating motion mechanism in the air tuck-in apparatus by this invention. FIG. 2 is a partial cross-sectional view showing an example of a mounting structure of a crank hub to a drive shaft; FIG. 4 is a diagram showing the relationship between the position of a reciprocating tuck-in head and the crank angle; FIG. 4 is a schematic diagram showing an example of a reversing drive unit configured with a four-bar link mechanism;

An embodiment of an air tuck-in device for an air jet loom according to the present invention will be described below with reference to FIGS. 1 to 6. FIG.

As shown in FIG. 1, an air jet loom 1 on which the present invention is based has an end of a weft Y (hereinafter referred to as a "weft end") inserted by compressed air jetted from a main nozzle MN or the like. ) into the opening of the warp W into which the succeeding weft Y is weft-inserted.

Regarding the air tuck-in device 2, in detail, the air tuck-in device 2 includes a tuck-in head 3 for performing the tuck-in operation. As shown in FIG. 2, the tuck-in head 3 has a slit 3a into which the end of the weft is inserted, and tuck-in nozzles 3c for jetting air for the tuck-in operation. and a plurality of tuck-in nozzles 3c aligned in the extending direction of the nozzle. The leading end portion of the tuck-in head 3 serves as a guide portion 3d formed with an inclined surface 3e extending vertically so as to be continuous with the slit 3a so that the weft Y can be easily inserted into the slit 3a. ing. The tuck-in head 3 also has release nozzles 3f for jetting air from inside the slits 3a toward the jetting area of each tuck-in nozzle 3c (the range over which the air jetting by the tuck-in nozzles 3c reaches) for folding back the ends of the weft yarn. is doing.

In addition, the air tuck-in device 2 has such a tuck-in head 3 on the yarn feeding side (main nozzle MN side) and the opposite yarn feeding side of the air jet loom 1 . In this embodiment, the tuck-in head 3 on the yarn supplying side and the tuck-in head 3 on the opposite yarn supplying side have different structures, and the tuck-in head 3 on the yarn supplying side includes the slit 3a and the nozzles. , has a holding hole and a holding nozzle (both not shown) for holding the weft end in the slit 3a. Each tuck-in head 3 can perform the tuck-in operation at a first position on the cloth fell CF side with respect to the front-rear direction of the loom 1 (hereinafter simply referred to as "the front-rear direction"). Specifically, the first position is set as a position (indicated by a solid line in FIG. 1) where the position of the bottom 3b of the slit 3a substantially coincides with the position of the cloth fell CF in the front-rear direction.

Regarding the arrangement of the tuck-in heads 3 in the weaving width direction, the tuck-in head 3 on the yarn supplying side is located near the yarn supplying side fabric edge and between the main nozzle MN and the yarn supplying side fabric edge. It is designed to As for the tuck-in head 3 on the side opposite to the yarn supply side, the air jet loom 1 is provided with a catch cord C on the outside of the fabric end on the side opposite to the yarn supply side as shown in the drawing. is provided in the vicinity of the weave end on the side opposite to the yarn feeding side and between the catch cord C and the yarn end on the side opposite to the yarn feeding side. Therefore, in the air jet loom 1, each tuck-in head 3 is arranged at a position overlapping the reed 4 (reed dents 4a) in the weaving width direction.

In the air jet loom 1, the yarn feed cutter 5 for cutting the weft Y at each weft insertion on the yarn feed side is located on the opposite side of the tuck-in head 3 on the yarn feed side from the fabric edge side. It is provided between the side tuck-in head 3 and the main nozzle MN. Further, the cutter 6 for cutting the weft Y connected to the catch cord C on the non-supply side is located on the opposite side of the tuck-in head 3 on the non-supply side from the fabric edge side and on the side opposite to the tuck-in head 3 on the non-supply side. It is provided so as to be located between the catch cord C. However, the cutter 6 on the side opposite to the weft feeding side performs a cutting operation for each weft insertion for the tuck-in operation, and can be said to function as a part of the air tuck-in device 2 .

In the air jet loom 1 described above, when the weaving width of the woven fabric T to be woven is changed, the position of the weave end on the side opposite to the yarn supply side changes, and accordingly, the tuck-in on the side opposite to the yarn supply side changes. The positions of the head 3 and cutter 6 are also changed. When the positional relationship in the weaving width direction between the tuck-in head 3 and the reed 4 does not change, as in the case of the yarn feeding side, by cutting out some of the dents 4a of the reed 4, the tuck-in accompanying the reed beating operation can be achieved. Interference between the head 3 and the reed dents 4a is avoided. However, on the side opposite to the yarn feeding side where the position of the tuck-in head 3 can change as described above, it is not possible to cope with this by notching the dents 4a as in the case of the yarn feeding side.

Therefore, in the air tuck-in device of the present invention, the tuck-in head (in this embodiment, the tuck-in head 3 on the side opposite to the yarn feeding side) that may interfere with the reed dents 4a accompanying the beating operation is used for the beating operation. Together, they are configured to undergo rocking displacement (reciprocating motion). That is, the air tuck-in device of the present invention has a reciprocating mechanism for reciprocating the tuck-in head. The reciprocating motion is performed in the longitudinal direction between the first position where the tuck-in operation can be performed as described above and the second position (retraction position) which avoids interference as described above. will be The retracted position is a position spaced apart from the cloth fell CF in the front-rear direction, and the tuck-in head 3 on the side opposite to the yarn supplying side moves away from the cloth fell CF on the side opposite to the reed 4 side due to the reciprocating motion. (the position indicated by the dotted line in FIG. 1).

An example of the reciprocating motion mechanism in such an air tuck-in device of the present invention will be described below in detail as the configuration of the present embodiment. In this embodiment, only the tuck-in head 3 on the opposite side of the yarn feeding side is driven to reciprocate by the reciprocating motion mechanism 7 as described above. That is, the tuck-in head to which the reciprocating mechanism 7 is related in this embodiment is the tuck-in head 3 on the side opposite to the yarn feeding side. Therefore, unless otherwise specified, the term "tuck-in head" refers to the tuck-in head on the side opposite to the yarn feeding side.

First, the air tuck-in device 2 includes a reciprocating mechanism 7 for reciprocating the tuck-in head 3 as described above, and a drive shaft 8 as a drive source for the reciprocating mechanism 7 (FIG. 3). The drive shaft 8 is rotatably supported by the loom frame 9 via a bearing 10 with one end protruding outside the loom frame 9 in the weaving width direction. The drive shaft 8 is mechanically connected to the loom main shaft MS, and is provided so as to be continuously rotated in one direction in synchronization with the loom main shaft MS. In this embodiment, a pair of drive shafts 8 are provided on the yarn feeding side and the yarn counter side of the air jet loom 1, respectively.

Moreover, the reciprocating mechanism 7 is provided in a manner connected to the drive shaft 8 thereof. More specifically, the reciprocating mechanism 7 includes an intermediate transmission shaft 11 extending in the weaving width direction and common to both drive shafts 8 , and connecting the intermediate transmission shaft 11 and each drive shaft 8 . and a pair of reversing drive units 12 for reciprocatingly reversing driving the intermediate transmission shaft 11 . Further, the reciprocating mechanism 7 includes a swing arm 13 that supports the tuck-in head 3 and is provided so as to be swingable on the loom 1, and a swing arm 13 that reciprocates the intermediate transmission shaft 11 in a reciprocating motion. 13 and a drive transmission portion 14 for transmitting the power to the power source 13 . The details of each component included in the reciprocating mechanism 7 are as follows.

The intermediate transmission shaft 11 is provided so as to be bridged between the left and right loom frames 9 at a position closer to the winding side of the woven fabric T than the retracted position in the front-rear direction. A temple bar 15 is provided on the loom 1 so as to extend in the weaving width direction. there is The intermediate transmission shaft 11 is rotatably supported by the loom frame 9 via bearings (not shown), and both ends of the intermediate transmission shaft 11 are provided so as to protrude outward from the loom frames 9 . It is

Next, the reversing drive unit 12 is provided outside the loom frame 9 on the yarn feeding side and outside the loom frame 9 on the opposite yarn feeding side. Note that the reversing driving portion 12 on the yarn feeding side and the reversing driving portion 12 on the opposite side to the yarn feeding side are configured symmetrically with respect to the weaving width direction. Therefore, only the reversing driving section 12 on the opposite yarn feeding side will be described below.

As shown in FIG. 3 , the reversing drive section 12 is composed of a multi-joint link mechanism including a crank mechanism 16 attached to the drive shaft 8 . In this embodiment, the multi-joint link mechanism that constitutes the reversing drive section 12 is a six-joint link mechanism. More specifically, the reversing drive section 12 is connected to the crank mechanism 16 including the connecting rod 161, one end of which is connected to the connecting rod 161 of the crank mechanism 16, and an intermediate portion of which the reversing drive section 12 is supported swingably by the loom frame 9. a drive lever 18 attached to the intermediate transmission shaft 11 at one end so as not to rotate relative to the intermediate transmission shaft 11; It is

In the reversing drive portion 12 , the crank mechanism 16 includes, as shown in FIG. and an eccentric shaft 163 fixed to the crank hub 162 so that the center of the drive shaft 8 is positioned eccentrically from the center of the drive shaft 8 when attached to the eccentric shaft 163; It is composed of a connecting rod 161 and a connecting rod 161.

More specifically, the crank hub 162 has a shaft shape as a whole and is configured to have a fitting hole 162a into which the one end of the drive shaft 8 is fitted. However, the fitting hole 162a is a bottomed hole that opens to the end face of the crank hub 162 on the one end side in the axial direction. Further, the crank hub 162 has a split tightening structure including a slotted portion 162b that communicates with the fitting hole 162a. The crank hub 162 is attached to the drive shaft 8 (the one end portion) inserted through the insertion hole 162a so as to be non-rotatable relative to the drive shaft 8 (above-mentioned one end portion) inserted through the insertion hole 162a.

The eccentric shaft 163 is a shaft to which the connecting rod 161 is connected, and is formed integrally with the crank hub 162 in this embodiment. The eccentric shaft 163 is provided so as to protrude from the end surface of the crank hub 162 opposite to the one end side (the other end side). However, the eccentric shaft 163 is provided so that the center of the eccentric shaft 163 is positioned eccentrically from the center of the fitting hole 162 a in the crank hub 162 . Therefore, when the crank hub 162 is attached to the drive shaft 8 as described above, the eccentric shaft 163 is located at a position eccentric from the axis of the drive shaft 8 .

Also, the connecting rod 161 is a lever-shaped member having through holes at both ends thereof. One end of the connecting rod 161 is connected to the eccentric shaft 163 so as to be relatively rotatable. Specifically, the connecting rod 161 has a bearing 20 fitted in a through hole 161 a at one end thereof. connected as possible. As a result, the connecting rod 161 is connected at its one end to the crank hub 162 via the eccentric shaft 163 .

The swing lever 17 is a substantially L-shaped lever member that is bent at its intermediate portion. The rocking lever 17 is rockably supported on the loom frame 9 at a bent portion in the middle thereof. Regarding the support of the rocking lever 17, specifically, on the loom frame 9 side, a lever shaft 21 for supporting the rocking lever 17 is provided in a state of protruding outward. On the other hand, the swing lever 17 has a through hole formed in the bent portion for assembling the swing lever 17 to the lever shaft 21 . Further, the swing lever 17 is attached to the loom frame 9 by mounting the swing lever 17 to the lever shaft 21 via a bearing or by rotatably supporting the lever shaft 21 with respect to the loom frame 9 . It is in a state of being rockably supported.

Through holes are also formed in both ends of the swing lever 17 . One end of the rocking lever 17 is connected to the other end of the connecting rod 161 so as to be relatively rotatable. Specifically, a bearing (not shown) is fitted into one of the through hole at one end of the swing lever 17 and the through hole at the other end of the connecting rod 161, and is fitted into the other through hole. By fitting the connecting shaft 22 into the bearing, the rocking lever 17 and the connecting rod 161 are connected so as to be relatively rotatable.

The drive lever 18 is a lever member that is slightly bent at its intermediate portion. Through holes are also formed at both ends of the driving lever 18 . Further, the drive lever 18 has a split structure including a slit portion 18a communicating with the through hole at one end thereof. The driving lever 18 is fixed by the split tightening structure in a state in which the intermediate transmission shaft 11 (the end portion of the opposite end portion of the above-mentioned end portions opposite to the yarn feeding side) is inserted through the through hole at one end thereof. is attached to the intermediate transmission shaft 11 at one end thereof so as to be relatively non-rotatable.

The connecting rod 19 is a lever-shaped member having through holes at both ends thereof. One end of the connecting rod 19 is connected to the other end of the rocking lever 17 so as to be relatively rotatable. Specifically, a bearing (not shown) is fitted into one of the through hole at one end of the connecting rod 19 and the through hole at the other end of the rocking lever 17, and is fitted into the other through hole. By inserting the connecting shaft 23 into the bearing, the connecting rod 19 and the rocking lever 17 are connected so as to be relatively rotatable.

The connecting rod 19 is connected at its other end to the other end of the drive lever 18 so as to be relatively rotatable. Specifically, a bearing (not shown) is fitted into one of the through hole at the other end of the connecting rod 19 and the through hole at the other end of the drive lever 18, and is fitted into the other through hole. By inserting the connecting shaft 24 into the bearing, the connecting rod 19 and the drive lever 18 are connected so as to be relatively rotatable.

Next, regarding the swing arm 13 that supports the tuck-in head 3, the swing arm 13 is a lever-shaped member having through holes at both ends thereof. Also, the swing arm 13 has a shape that is slightly bent between the intermediate portion 13c and the other end portion. Of the four sides extending in the longitudinal direction, two sides parallel to the thickness direction of the swing arm 13 are defined as a front side 13a and a rear side 13b. is the front side surface 13a.

The swing arm 13 is supported by a support shaft 25 above the warp line WL. More specifically, a support shaft 25 is provided above the warp line WL on the loom 1 so as to be supported by a support mechanism 30, which will be described later. The support shaft 25 is arranged above the cloth fell CF in the front-rear direction, and is arranged between the loom frame 9 on the side opposite to the yarn supply side and the cloth ends on the side opposite to the yarn supply side in the weaving width direction. ing. Further, the support shaft 25 is provided so that the direction of its axis coincides with the weaving width direction (the axial direction of the intermediate transmission shaft 11) in the state of being supported as described above. Moreover, the swing arm 13 is supported by a support shaft 25 at one end thereof. As a result, the swing arm 13 is positioned above the warp line WL and positioned between the loom frame 9 on the side opposite to the yarn supply side and the fabric ends on the side opposite to the yarn supply side in the weaving width direction. there is However, the swing arm 13 is supported by the support shaft 25 with the front side surface 13a facing the reed 4 side.

Regarding the support of the rocking arm 13, specifically, the rocking arm 13 is assembled to the support shaft 25 in such a manner that the support shaft 25 is inserted into the through hole at one end of the rocking arm 13, so that one end of the rocking arm 13 is It is supported by the support shaft 25 at the part. In addition, the swing arm 13 and the support shaft 25 are assembled via a bearing (not shown), or the support shaft 25 is rotatably supported by the support mechanism 30 so that the swing arm 13 can swing around the axis of the support shaft 25 in the above arrangement.

The tuck-in head 3 is supported by the swing arm 13 supported as described above. More specifically, a bracket 26 is attached to the swing arm 13 at a position on the other end side adjacent to the bent portion (bent portion). In the attached state, the bracket 26 protrudes from the front side surface 13a of the swing arm 13 when viewed in the thickness direction of the swing arm 13, and the portion of the swing arm 13 on the other end side of the bent portion is attached to the swing arm 13 so that its projecting direction forms an acute angle with the extending direction of the . Moreover, the tuck-in head 3 is attached to the tip of the bracket 26 . That is, the tuck-in head 3 is supported by the swing arm 13 via the bracket 26 .

However, in the supported state, the tuck-in head 3 is in a state in which the guide portion 3d faces the reed 4 side. In the supported state, the tuck-in head 3 is displaced (moved) toward the reed 4 side, and when the guide portion 3d reaches the position of the cloth fell CF in the front-rear direction, the slit 3a is opened. It is in such a state that the extending direction is substantially parallel to the warp line WL.

Further, the tip of the bracket 26 is attached with the cutter 6 on the side opposite to the yarn feeding side. In the attached state, the cutter 6 on the side opposite to the yarn feeding side is in a state in which the tips of the movable blade 6a and the fixed blade 6b are located closer to the reed 4 than the portions supporting the two blades. The cutter 6 on the side opposite to the yarn feeding side is positioned between the tuck-in head 3 and the catch cord C in the weaving width direction as described above, and is positioned between the tuck-in head 3 and the tuck-in head 3 in the front-rear direction. The position is such that the weft Y inserted into the slit 3a can be cut.

Next, regarding the drive transmission portion 14 that transmits the reciprocating motion of the intermediate transmission shaft 11 to the swing arm 13, the drive transmission portion 14 is attached at one end to the intermediate transmission shaft 11 so as not to rotate relatively. It is composed of a lever 141 and a second connecting lever 142 connecting the other end of the first connecting lever 141 and the other end of the swing arm 13 .

In the drive transmission portion 14, the first connecting lever 141 is a lever member having through holes at both ends thereof. Also, the first connecting lever 141 has a split tightening structure including a slit portion 141a communicating with the through hole at one end thereof. The first connecting lever 141 is fixed to the intermediate transmission shaft 11 at its one end by its split tightening structure in a state where the intermediate transmission shaft 11 is inserted through the through hole at one end thereof. It is attached so that relative rotation is impossible.

Also, the second connecting lever 142 is a lever member having through holes at both ends thereof. One end of the second connecting lever 142 is connected to the other end of the first connecting lever 141 so as to be relatively rotatable. Specifically, a bearing (not shown) is fitted in one of the through hole at one end of the second connecting lever 142 and the through hole at the other end of the first connecting lever 141, and the other through hole The second connecting lever 142 and the first connecting lever 141 are rotatably connected to each other by fitting the connecting shaft 27 into the bearing.

The other end of the second connecting lever 142 is connected to the other end of the swing arm 13 so as to be relatively rotatable. Specifically, a bearing (not shown) is fitted into one of the through hole at the other end of the second connecting lever 142 and the through hole at the other end of the swing arm 13, and the other through hole is fitted with a bearing (not shown). By fitting the inserted connecting shaft 28 into the bearing, the second connecting lever 142 and the swing arm 13 are in a state in which they are relatively rotatably connected. The portion (the portion where the connecting shaft 28 exists) CP that connects the second connecting lever 142 and the swing arm 13 in this way corresponds to the "connecting portion".

According to the reciprocating mechanism 7 having the components described above, the connecting rod 161 reciprocates in the front-rear direction in the crank mechanism 16 as the drive shaft 8 is rotationally driven by the loom main shaft MS. The drive shaft 8 is rotationally driven in synchronization with the loom main shaft MS so as to make one rotation each time the loom main shaft MS makes one rotation (each weaving cycle of the loom 1). Therefore, one reciprocating motion of the connecting rod 161 is performed for each weaving cycle of the loom 1 . Along with the reciprocating motion of the connecting rod 161, the swing lever 17 connected to the connecting rod 161 is driven, and the swing lever 17 and the connecting rod 19 are connected to each other. A drive lever 18 is driven to swing about the axis of the intermediate transmission shaft 11 . As a result, the intermediate transmission shaft 11 to which the drive lever 18 is connected so as not to rotate relative to each other is driven to reciprocate once per weaving cycle of the loom 1 . In this manner, reciprocating reversal driving of the intermediate transmission shaft 11 is performed by the reversing driving section 12 .

Further, in accordance with such reciprocating reverse driving of the intermediate transmission shaft 11 , in the drive transmission section 14 , the first connecting lever 141 connected to the intermediate transmission shaft 11 so as not to rotate relative to it moves toward the center of the intermediate transmission shaft 11 . is driven to oscillate around. As a result, the swinging arm 13 connected to the first connecting lever 141 by the second connecting lever 142 in the drive transmission portion 14 is driven to swing back and forth about the axis of the support shaft 25 . Further, the reciprocating swing of the swing lever 17 is performed once per weaving cycle of the loom 1 . As a result, the tuck-in head 3 and the cutter 6 on the side opposite to the yarn feeding side, which are supported by the swing arm 13 as described above, reciprocate in the longitudinal direction once per weaving cycle of the loom 1. It will happen. In this manner, the reciprocating mechanism 7 reciprocates the tuck-in head 3 and the cutter 6 on the side opposite to the yarn feeding side.

Next, FIG. 6 shows the relationship between the longitudinal position of the tuck-in head 3 reciprocatingly driven as described above and the rotation angle (so-called crank angle, hereinafter referred to as "crank angle") of the loom main shaft MS. will be described with reference to the swing motion of the reed 4. In FIG. 6, the horizontal axis represents the crank angle (for one weaving cycle), and the vertical axis represents the amount of displacement of the tuck-in head 3 and the reed 4 in the front-rear direction with respect to the position of the cloth fell CF. In the figure, the displacement of the reed 4 is indicated by a one-dot chain line, and the displacement of the tuck-in head 3 is indicated by a two-dot chain line.

As shown in the figure, the reed 4 reaches the most advanced position when the crank angle is 0°, and the inserted weft Y is beaten to the cloth fell CF at that time. The weft Y is held by a catch cord C at its leading end. On the other hand, when the crank angle is 0°, the tuck-in head 3 is positioned near the second position (the retracted position). Specifically, the tuck-in head 3 is positioned at the retracted position when the crank angle is 5°.

Next, the reed 4 is displaced toward the most retracted position as shown in the figure, reaches the vicinity of the most retracted position at a crank angle of approximately 135°, and reaches the most retracted position at a crank angle of 180°. After that, the reed 4 advances toward the most advanced position. In the process of advancing, the reed 4 is positioned near the most retracted position within the crank angle range of 180° to approximately 225°.

In response to such displacement of the reed 4, the tuck-in head 3 starts displacing toward the first position at the crank angle of 5°, and reaches the first position at the crank angle of 185°. reach. Then, the tuck-in head 3 starts retreating toward the retracted position from the time when the crank angle reaches 185°. The reversing drive section 12 in the reciprocating mechanism 7 for displacing the tuck-in head 3 is constructed as a six-bar link mechanism as described above. As a result, the tuck-in head 3 is positioned near the first position within a crank angle range of approximately 150° to approximately 220°.

In the process of displacing the tuck-in head 3 as described above, the guide portion 3d of the tuck-in head 3 reaches the position of the fell CF at a crank angle of approximately 70°. Therefore, as the tuck-in head 3 is displaced toward the first position from that time point, part of the portion of the weft Y whose tip is caught by the catch cord C and located between the catch cord C and the weaving edge. is inserted into the slit 3a of the tuck-in head 3. When the tuck-in head 3 reaches the first position (at a crank angle of 185°), the part of the weft Y reaches the bottom 3b of the slit 3a of the tuck-in head 3.

Further, in the tuck-in head 3, the tuck-in nozzles 3c start to inject air from the point of time when the crank angle is 180°. The air injection from each tuck-in nozzle 3c continues until the crank angle reaches 225°. While the tuck-in nozzles 3c are blowing air, the weft Y is cut by the tuck-in head 3 and the cutter 6 supported by the swing arm 13 on the side opposite to the weft supply side. More specifically, the cutter 6 is driven at a crank angle of 210°, and the portion of the weft Y that continues to the weft end (the weft end portion) is positioned on the catch cord C side of the tuck-in head 3 and opposite to the feeding yarn. It is cut by the cutter 6 on the side.

Furthermore, in the tuck-in head 3, air injection from the release nozzle 3f is started at a crank angle of 206° before the crank angle of 210° at which cutting is performed. As a result, the weft end is blown away to the injection area of each tuck-in nozzle 3c by air jetting from the release nozzle 3f, and then the weft end is folded back by the air jetting from each tuck-in nozzle 3c to enter the shed of the warp W. , the tuck-in operation is completed.

As described above, the tuck-in head 3 is positioned near the first position overlapping the cloth fell CF with respect to the front-rear direction from about 150° to about 220° of the crank angle, but after that, the tuck-in head 3 is positioned at the retracted position. , and when the crank angle is approximately 300°, it is completely separated from the cloth fell CF in the front-rear direction. Therefore, as described above, the reed 4 is displaced from the vicinity of the most retracted position toward the most advanced position after the crank angle of about 225°, but before the time when the reed 4 reaches the most advanced position (crank angle of 360°). Then, the tuck-in head 3 is separated from the cloth fell CF as described above. Therefore, the tuck-in head 3 does not interfere with the reed 4 regardless of the position of the tuck-in head 3 within the range overlapping the reed 4 (reed dents 4a) in the weaving width direction.

Next, regarding the support of the swing arm 13 in the reciprocating mechanism 7 for reciprocating the tuck-in head 3 as described above, the support mechanism 30 supporting the support shaft 25 is provided on the loom 1 as described above. It is installed on the temple bar 15 which is attached. The details of the configuration of the support mechanism 30 are as follows.

The support mechanism 30 includes a support portion 31 that supports the support shaft 25 and an attachment portion 32 to which the support portion 31 is attached and to which the temple bar 15 is attached. Moreover, the support portion 31 has a configuration in which three brackets are combined. Specifically, the support portion 31 includes a first bracket 311 that supports the support shaft 25 , a second bracket 312 that is attached to the mounting portion 32 , and the first bracket 311 attached to the second bracket 312 . and a third bracket 313 for maintaining a supported state.

More specifically, the first bracket 311 is a plate-shaped bracket. A through hole (not shown) for supporting the support shaft 25 is formed at one end of the first bracket 311 so as to penetrate in the plate thickness direction. Further, at the other end of the first bracket 311, a female screw hole (first screw member) 40 for attaching the first bracket 311 to the third bracket 313 is screwed. (not shown) are formed. The two female screw holes are also formed so as to penetrate in the plate thickness direction.

The third bracket 313 is also a plate-shaped bracket. Also, two through holes (not shown) through which the first screw member 40 is inserted are formed in one end of the third bracket 313 so as to penetrate in the plate thickness direction. The first screw member 40 inserted through the through-hole of the third bracket 313 is screwed into the female screw hole of the first bracket 311 , so that the first bracket is attached to the third bracket 313 . 311 is assembled.

Furthermore, two through holes (not shown) are also formed on the other end side of the third bracket 313 so as to penetrate in the plate thickness direction. This through hole is a hole through which a screw member (second screw member) 41 for attaching the third bracket 313 to the second bracket 312 is inserted. However, the two through-holes are formed in a direction different from the two through-holes through which the first screw member 40 is inserted (specifically, the direction of arrangement is perpendicular to each other). there is

The second bracket 312 includes a plate-like base portion 312a that serves as a base, and a plate-like protrusion that protrudes from a portion near the intermediate portion of the base portion 312a in one direction of the plate thickness of the base portion 312a. 312b. Two female screw holes (not shown) into which the second screw member 41 is screwed are formed in the projecting portion 312b. In addition, the two female screw holes are formed so as to pass through the projecting portion 312b in the plate thickness direction. Also, the two female screw holes are formed so that the alignment direction thereof is parallel to the upper surface of the base portion 312a (the surface from which the protruding portion 312b protrudes).

After that, the second screw member 41 inserted through each of the through holes formed on the other end side of the third bracket 313 is screwed into the female screw hole, whereby the second screw member 41 is screwed into the female screw hole. A third bracket 313 to which one bracket 311 is attached is in a state of being attached to the second bracket 312 . By assembling the brackets in this manner, the support portion 31 that supports the support shaft 25 is configured.

Further, in the base portion 312a of the second bracket 312, each of both end portions in the plate thickness direction (longitudinal direction of the base portion 312a) of the protruding portion 312b is provided so as to penetrate in the plate thickness direction of the base portion 312a. A through hole (not shown) is formed. The through hole is a hole through which a screw member (third screw member) 42 for attaching the second bracket 312 (support portion 31) to the attachment portion 32 is inserted.

Next, regarding the attachment portion 32 to which the support portion 31 (second bracket 312) is attached, the attachment portion 32 includes an attachment bracket 321 erected on the temple bar 15 and the attachment bracket 321 attached to the temple bar 15. and a stop member 322 for keeping the state fixed with respect to. Moreover, the mounting bracket 321 is composed of a single member, and includes a support portion mounting portion 321a to which the support portion 31 is mounted, and a mounting bracket 321 that is mounted on the temple bar 15 so as to stand against the temple bar 15. and a fixing portion 321c that is directly fixed.

As for the mounting bracket 321, the supporting portion mounting portion 321a is formed in a substantially rectangular parallelepiped shape with the width of the side surface being smaller than the width of the front and rear surfaces. The width dimension of the support portion attachment portion 321a (the dimension in the width direction of the front and rear surfaces) is substantially the same as the dimension in the longitudinal direction of the base portion 312a of the support portion 31 described above. However, a groove 321b is formed in the support portion attachment portion 321a so as to open to the upper surface and the front and rear surfaces. The groove 321b is for allowing the arrangement of the second connecting lever 142 in the drive transmission section 14 as will be described later. Further, the groove 321b is formed so that the width of the groove (the interval between the inner surfaces of the groove 321b) is smaller than the interval between the two through holes formed in the base portion 312a of the support portion 31. As shown in FIG. Female screw holes (not shown) into which the third screw members 42 are screwed are formed in the support portion mounting portion 321a so as to open to the upper surface on both sides of the groove 321b on the upper surface. .

The fixing portion 321c is a portion that is directly fixed to the temple bar 15 when the mounting bracket 321 is erected on the temple bar 15 as described above. On the other hand, it is performed with the fixed portion 321c placed thereon. As is well known, the temple bar 15 is provided between the left and right loom frames 9 so as to extend in the weaving width direction. That is, the longitudinal direction (extending direction) of the temple bar 15 coincides with the weaving width direction. Therefore, in the following description, the longitudinal direction and the direction parallel thereto are all referred to as the weaving width direction. In the following description, the reed 4 side of the target portion (apparatus) is referred to as the rear (side), and the side opposite to the reed 4 side is referred to as the front (side).

More specifically, the fixing portion 321c is mainly composed of a substantially rectangular parallelepiped portion. The fixing portion 321c is placed on the temple bar 15 at its main portion (a portion formed in a substantially rectangular parallelepiped shape; hereinafter referred to as "main portion"). However, in the placed state (installed state), the fixed portion 321c aligns the long side direction of the rectangular lower surface of the main body portion with the weave width direction, and one end in the short side direction of the lower surface It is arranged so as to match the front edge of the upper surface of the temple bar 15 .

However, the main portion of the fixed portion 321c is formed to have a dimension in the short side direction of the lower surface that is larger than the dimension in the front-rear direction of the upper surface of the temple bar 15 . That is, the main body has a size that protrudes rearward in the front-rear direction with respect to the temple bar 15 in the installed state. In addition, the main body part has a stepped part on the lower surface that matches the shape of the temple bar 15 so that the lower surface of the protruding part is positioned below the upper surface of the temple bar 15 in the installed state. It's becoming

In addition, a female screw hole (not shown) is formed in the main body portion so as to open on the surface (front surface) facing the front side in the installed state. In addition, two female screw holes are formed so as to be positioned on both sides of the intermediate portion of the front surface in the weaving width direction in the installed state. The female screw hole is a hole into which a screw member (fourth screw member) 43 is screwed so that the fixing portion 321c (mounting bracket 321) is fixed to the temple bar 15. As shown in FIG.

In addition, the fixed portion 321c has a portion formed to protrude from the upper surface of the main body portion. In the mounting bracket 321, the fixed portion 321c is integrally formed with the support portion mounting portion 321a so that the portion projecting from the upper surface of the main body portion is continuous with the lower surface of the support portion mounting portion 321a. ing. In the mounting bracket 321 configured as described above, the width direction of the front and rear surfaces of the support portion mounting portion 321a and the long side direction of the lower surface of the fixing portion 321c match.

Next, regarding the stop member 322 for fixing the mounting bracket 321 configured as described above to the temple bar 15, the stop member 322 has a plate-like receiving portion 322a for receiving the head of the screw member. is composed mainly of The receiving portion 322a has a substantially rectangular shape when viewed in the plate thickness direction. Further, the stop member 322 is formed on each of both ends in the long side direction of the receiving portion 322a so as to protrude in one direction of the plate thickness of the receiving portion 322a and extend in the short side direction of the receiving portion 322a. It has a protruding portion 322b that has been The stopper member 322 has a structure in which each projecting portion 322b and the receiving portion 322a are integrally formed.

A through hole (not shown) is formed in the center of the receiving portion 322a of the stop member 322 so as to penetrate in the plate thickness direction. The through hole is a hole through which the fourth screw member 43 is inserted. Furthermore, in the stopper member 322, the projections 322b are positioned on both sides of the through hole formed in the receiving portion 322a with respect to the long side direction of the receiving portion 322a. The fourth screw member 43 is screwed into the female screw hole of the fixed portion 321c placed on the temple bar 15, and the long side direction of the receiving portion 322a is aligned with the vertical direction. 322b is sized to be located in front of the temple bar 15. As shown in FIG. In other words, the receiving portion 322a of the stop member 322 has such a size (dimension) that the protrusions 322b can be formed at such intervals in the longitudinal direction thereof.

When fixing the mounting bracket 321 (fixed portion 321c) to the temple bar 15, the mounting bracket 321 is placed on the temple bar 15 at the fixed portion 321c. However, in the mounted state, the fixed portion 321 c is in a state in which the step portion on the lower surface is in contact with the rear side surface of the temple bar 15 . Further, two stopper members 322, 322 are combined with the fixed portion 321c in that state so as to correspond to the two female screw holes formed in the fixed portion 321c. Specifically, the surface from which the projecting portion 322b of the receiving portion 322a of each stop member 322 protrudes faces the fixed portion 321c, and the surface from which the projecting portion 322b projects to the through hole of the receiving portion 322a is By inserting the fourth screw member 43 from the opposite surface side and screwing the fourth screw member 43 into the female screw hole of the fixing portion 321c, the fixing portion 321c and the stop member 322 are combined. state.

Then, the fourth screw member 43 is tightened in a state in which the long side direction of the receiving portion 322a of each stop member 322 is aligned with the vertical direction. As a result, one projection 322b of each stop member 322 contacts the temple bar 15 while the head of the fourth screw member 43 is in contact with the receiving portion 322a. is in contact with the fixed portion 321c. As a result, the fixed portion 321c and the stop member 322 that are combined with each other are in a state in which the temple bar 15 is sandwiched between the stepped portion of the fixed portion 321c and the protrusion 322b of the stop member 322 . By tightening the fourth screw member 43, a force acting on the stop member 322 (receiving portion 322a) via the head portion acts on the temple bar 15 as a clamping force, so that the stepped portion and the one protrusion are held together. The temple bar 15 is sandwiched by the portion 322b, and as a result, the fixed portion 321c (mounting bracket 321) is fixed to the temple bar 15.

In the support mechanism 30 installed on the temple bar 15 as described above, the support shaft 25 for supporting the swing arm 13 is supported by the first bracket 311 in the support portion 31 thereof. . More specifically, in the support mechanism 30, the support portion 31 has the third screw member 42 inserted through each of the through holes formed in the base portion 312a of the second bracket 312, and the third The screw member 42 is screwed into the female screw hole formed in the support portion mounting portion 321 a of the mounting bracket 321 , so that the mounting bracket 321 is assembled to the mounting bracket 321 .

However, the assembly is performed by placing the support mechanism 30 on the temple bar 15 (the above-mentioned installed state) and attaching the third bracket 313 to the projecting portion 312b of the second bracket 312 on the mounting bracket 321. The attached first bracket 311 extends rearward. Therefore, in the installed state, the first bracket 311 of the support portion 31 extends rearward from the temple bar 15 in the front-rear direction. In addition, the through hole formed in the one end of the first bracket 311 is located substantially above the cloth fell CF.

One end of the support shaft 25 is inserted into the through hole of the first bracket 311, and the other end of the support shaft 25 protrudes toward the loom frame 9 on the side opposite to the yarn feeding side in the weaving width direction. It is supported by the first bracket 311 (support mechanism 30). The support shaft 25 is supported by inserting the one end portion into the through hole of the first bracket 311, or by fitting a bearing (not shown) in the through hole and by fitting the one end portion on the bearing. It is done in the form of being inserted in. At the other end of the support shaft 25 thus supported, the swing arm 13 is supported as described above.

The swing arm 13 supported by the support shaft 25 in this way and the intermediate transmission shaft 11 are connected by the drive transmission portion 14 configured as described above. Regarding the drive transmission portion 14, the first connecting lever 141 is moved substantially upward from the intermediate transmission shaft 11 when the tuck-in head 3 is positioned at the first position (when the crank angle is 185°). It is attached to the intermediate transmission shaft 11 in such an attachment phase as to extend. As described above, the first position is a position where the position of the bottom 3b of the slit 3a in the tuck-in head 3 substantially coincides with the position of the cloth fell CF in the front-rear direction.

Also, in the attached state of the first connecting lever 141, the height position of the through hole at the other end is the same as that of the swing arm 13 with the tuck-in head 3 positioned at the first position. It has a length dimension that substantially coincides with the height position of the through hole at the other end. Furthermore, the second connecting lever 142 has a length dimension such that the first connecting lever 141 and the swing arm 13 are connected in its attached state.

As a result, in a state in which the first connecting lever 141 is attached to the intermediate transmission shaft 11 and the second connecting lever 142 is connected to the first connecting lever 141 and the swing arm 13 in the drive transmission section 14, An angle θ formed between the first connecting lever 141 and the second connecting lever 142 in the drive transmission portion 14 (hereinafter referred to as "connection angle") is approximately 90°. That is, in that state, the second connecting lever 142 is in a substantially horizontal state in its longitudinal direction.

Further, by connecting the drive transmission portion 14 and the swing arm 13 as described above, the portions thereof are connected to the first connection lever 141 and the second connection lever 142 of the drive transmission portion 14 and the swing arm 13. and form a link mechanism. The link mechanism maintains the connection angle θ substantially constant while the tuck-in head 3 is driven to reciprocate between the first position and the second position (retracted position). is configured as follows.

Specifically, in the link mechanism, the connecting point (the axial center of the connecting shaft 27) between the first connecting lever 141 and the second connecting lever 142 is defined as the first connecting point P1. The point of connection with the second connection lever 142 (the axial center of the connection shaft 28) is defined as a second connection point P2. Further, the swing center of the first connecting lever 141 (the axis of the intermediate transmission shaft 11), which is the fulcrum on the one end side of the link mechanism, is defined as the first fulcrum F1, and the swing arm 13, which is the fulcrum on the other end side. (axis center of the support shaft 25) is defined as a second fulcrum F2. Moreover, the link mechanism has the distance from the first fulcrum F1 to the first connecting point P1, the distance from the second fulcrum F2 to the second connecting point P2, and the distance between the first fulcrum F1 and the first connecting point P2. The angle formed by the line segment connecting the second fulcrum F2 and the second connecting point P2 with respect to the line segment connecting the second connecting point P1 is the same throughout the reciprocating motion driving, and the connecting angle θ is the same angle. It is a configuration that is set in a relationship that maintains. Therefore, the connection angle θ is approximately 90° throughout the reciprocating motion.

Regarding the configuration, the position of the center of the intermediate transmission shaft 11 (first fulcrum F1) and the length dimensions of the first connecting lever 141 and the second connecting lever 142 are mechanically determined. Considering that the connection angle θ is approximately 90° when the tuck-in head 3 is positioned at the first position, the position of the connection portion CP at that time is specified. However, the position of the support shaft 25 is not limited to a specific position in order to realize the position of the connecting portion CP and the state in which the tuck-in head 3 is positioned at the first position. can assume different positions by adapting the shape of the . Depending on the position of the support shaft 25, the connection angle .theta. may not be approximately 90.degree. Therefore, in the above configuration, the position of the support shaft 25 is set so that the connection angle θ is approximately 90° throughout the driving of the reciprocating motion (even when the tuck-in head 3 is positioned at the retracted position). It can also be said that the configuration is

Further, the swing arm 13 supported by the support mechanism 30 via the support shaft 25 as described above is located at a position overlapping the mounting portion 32 (mounting bracket 321) of the support mechanism 30 in the weaving width direction. there is Accordingly, the drive transmission portion 14 connected to the swing arm 13 is also arranged so as to overlap the mounting bracket 321 in the weaving width direction. Further, as described above, the intermediate transmission shaft 11 is arranged on the front side of the temple bar 15, while the swing arm 13 is arranged above the cloth fell CF behind the temple bar 15. It is supported by shaft 25 . Therefore, the drive transmission portion 14 that connects the intermediate transmission shaft 11 and the swing arm 13 is arranged so as to overlap the mounting bracket 321 at a portion of the second connecting lever 142 in the front-rear direction. .

However, the mounting bracket 321 is formed with the grooves 321b opening to the front and rear surfaces of the support portion mounting portion 321a as described above. Further, the groove 321b is formed so that the position of the second connecting lever 142 in the drive transmission section 14 is included in the existence range in the up-down direction when the support mechanism 30 is installed. Therefore, the drive transmission portion 14 is in a state in which the second connection lever 142 passes through the groove in the mounting bracket 321 when the intermediate transmission shaft 11 and the swing arm 13 are connected.

In the air jet loom 1 having the air tuck-in device 2 described above, the woven fabric T to be woven is changed, and the weaving width of the woven fabric T after the change is the same as that of the woven fabric T before the change. If the weaving width is different, the arrangement of the tuck-in head 3 and the cutter 6 on the side opposite to the yarn feeding side is changed according to the change of the woven cloth T (weaving width). And the change of the arrangement is performed as follows.

First, in the drive transmission section 14 , the screw member 44 of the split tightening structure in the first connecting lever 141 is operated to loosen the split tightening fixing state, and the first connecting lever 141 (the drive transmission section 14 ) is fixed. As a result, the drive transmission portion 14 can move toward the intermediate transmission shaft 11 in the axial direction while the intermediate transmission shaft 11 is inserted through the through hole formed in the one end portion of the first connecting lever 141 . becomes a state in which relative movement is possible.

Next, in the support mechanism 30 that supports the swing arm 13 via the support shaft 25, the mounting portion 32 thereof is released from the fixed state with respect to the temple bar 15. Then, as shown in FIG. Specifically, the tightening of the fourth screw member 43 is loosened to eliminate the clamping force acting on the temple bar 15 . As a result, the drive transmission portion 14 is released from the fixed state of the intermediate transmission shaft 11 as described above, and the support mechanism 30, the swing arm 13 supported by the support mechanism 30, and the swing arm 13 supported by the support mechanism 30 are formed. The drive transmission unit 14 connected to the moving arm 13 includes a temple bar 15 fixedly provided on the loom 1 and an intermediate transmission shaft 11 (particularly, a temple bar supporting the swinging arm 13 via a support mechanism 30 or the like). 15), the position can be adjusted in the weaving width direction.

After that, the positions of the support mechanism 30 and the like are changed so that the tuck-in head 3 and the cutter 6 on the opposite side of the yarn feeding side are arranged at desired positions in the weaving width direction. The position is changed by sliding the support mechanism 30 on the temple bar 15 and by sliding the drive transmission section 14 with respect to the intermediate transmission shaft 11 . Then, in a state where the tuck-in head 3 is arranged at a desired position, the support mechanism 30 is again fixed to the temple bar 15 and the drive transmission portion 14 is moved to the intermediate transmission shaft 11 to fix the arrangement. is fixed with respect to As a result, the positions of the tuck-in head 3 and the cutter 6 on the side opposite to the yarn feeding side are changed to positions corresponding to the change in the woven cloth T (woven width).

Thus, according to the air tuck-in device 2, when changing the arrangement of the tuck-in head 3 with the change of the weaving width, the support mechanism 30 and the like (the support mechanism 30, the swing arm 13, and the drive transmission By changing only the position of the portion 14), the arrangement of the tuck-in head 3 can be changed. In other words, when the arrangement of the tuck-in head 3 is changed due to the change of the weaving width, the arrangement of the reversing drive section 12 connected to the intermediate transmission shaft 11 on the side opposite to the support mechanism 30 and the like (drive shaft 8 side) is changed. It is possible to change the arrangement of the tuck-in head 3 without changing the position. Therefore, according to the air tuck-in device 2, the arrangement of the tuck-in head 3 can be easily changed.

Incidentally, the support mechanism 30 is configured such that the position of the first bracket 311 in the support portion 31 with respect to the mounting portion 32 can be adjusted in three directions, that is, the weave width direction, the front-rear direction, and the vertical direction. Specifically, in the support mechanism 30, the through holes formed in the base portion 312a of the second bracket 312 are elongated holes in the longitudinal direction of the base portion 312a (the weave width direction in the installed state). It's becoming Therefore, the position of the second bracket 312 with respect to the mounting portion 32 can be adjusted within the range of the long hole (the through hole).

Further, the through hole of the third bracket 313 through which the second screw member 41 is inserted is an elongated hole elongated in the front-rear direction in the installed state. Further, the through-hole of the third bracket 313 through which the first screw member 40 is inserted is an elongated hole elongated in the vertical direction in the installed state. Therefore, the position of the third bracket 313 with respect to the projecting portion 312b of the second bracket 312 can be adjusted within the range of the long hole (the through hole) through which the second screw member 41 is inserted. Further, the position of the first bracket 311 can be adjusted with respect to the third bracket 313 within the range of the long hole (the through hole) through which the first screw member 40 is inserted in the third bracket 313. It's becoming

As a result of these configurations, in the installed state, the position of the first bracket 311 with respect to the mounting portion 32 can be adjusted in the three directions. Thereby, the position of the tuck-in head 3 supported by the first bracket 311 via the support shaft 25 and the swing arm 13 is adjustable in the three directions in the installed state.

In addition, as described above, the support shaft 25 is arranged above the cloth fell CF in the front-rear direction. That is, the support shaft 25 is arranged within a range in the vicinity of the cloth fell CF including right above the cloth fell CF in the front-rear direction. In the reciprocating motion mechanism 7 of the present embodiment, the swing radius of the tuck-in head 3 with the axis of the support shaft 25 as the swing center is the swing angle determined by the swing range described above. It has a size that does not cause large displacement in the radial direction. After that, the tuck-in head 3 is swung so that the extending direction of the slit 3a is substantially parallel to the warp line WL when the guiding portion 3d reaches the position of the cloth fell CF in the course of the reciprocating motion as described above. It is supported by the moving arm 13 .

For these reasons, in the swinging displacement in the front-rear direction from when the guide portion 3d reaches the position of the cloth fell CF to when the tuck-in head 3 reaches the first position, the slit 3a of the tuck-in head 3 is: It is displaced in a state substantially parallel to the warp line WL. That is, the trajectory of the movement of the tuck-in head 3 therebetween is substantially parallel to the warp line WL.

Therefore, according to the configuration in which the trajectory of the tuck-in head 3 is substantially parallel to the warp line WL, the extending direction of the slit 3a is substantially parallel to the warp line WL during the reciprocating motion of the tuck-in head 3. , the weft Y is received into the slit 3a, and the first position is reached while the extending direction of the slit 3a is maintained substantially parallel to the warp line WL. In the tuck-in head 3, since the direction in which the plurality of tuck-in nozzles 3c are aligned coincides with the extending direction of the slits 3a as described above, the air tuck-in device 2 can appropriately perform the tuck-in operation. It can be realized in the middle of the day.

Further, the link mechanism composed of the first connecting lever 141 and the second connecting lever 142 in the drive transmission section 14 and the swing arm 13 is, as described above, the reciprocating motion drive. It is configured to maintain the connection angle θ at approximately 90° throughout. Therefore, according to this configuration, since the motion of the intermediate transmission shaft 11 is more efficiently transmitted to the swing arm 13, the desired reciprocating motion of the tuck-in head 3 can be achieved by the intermediate transmission with a smaller amount of rotation. It can be realized by reciprocating rotation of the shaft 11 . As a result, when the tuck-in head 3 is reciprocated as described above, each member reciprocating in the reversing driving section 12 for driving the intermediate transmission shaft 11 reciprocatingly and reciprocatingly moves along with the rotation of the intermediate transmission shaft 11. Since the amount of movement of each member can be reduced, the load on each part of the reciprocating mechanism 7 is reduced.

Further, in the crank mechanism 16 of the reversing drive unit 12, the crank hub 162 has a split tightening structure as described above, and is attached to the drive shaft 8 by split tightening so as not to rotate relative to each other. That is, the crank hub 162 can be attached to the drive shaft 8 in an arbitrary attachment phase. By changing the mounting phase of the crank hub 162 with respect to the drive shaft 8, the longitudinal position of the reciprocally driven tuck-in head 3 with respect to the crank angle (the phase of the reciprocating motion of the tuck-in head 3) is changed. In this way, the air tuck-in device 2 of this embodiment has a configuration in which the phase of the reciprocating motion of the tuck-in head 3 can be changed. As a result, even if the optimal timing for performing the tuck-in operation changes due to changes in weaving conditions, etc., it is possible to easily cope with this change.

It should be noted that the present invention is not limited to the embodiments described above, and can be practiced in modified forms as described in (1) to (6) below.

(1) In the above-described embodiment, the reversing drive section 12 is composed of a multi-joint link mechanism including the crank mechanism 16 attached to the drive shaft 8 . Moreover, the multi-joint link mechanism is a six-joint link mechanism. However, in the case where the reversing drive part in the present invention is configured by a multi-bar link mechanism including a crank mechanism, it is not limited to the one configured by a 6-bar link mechanism as described above, and may be configured by a 4-bar link mechanism. It can be anything.

In the case where the reversing drive section is configured by the four-bar link mechanism, the swing lever connected to the connecting rod of the crank mechanism in the reversing drive section (six-bar link mechanism) of the above-described embodiment, and the swing lever and the drive lever are omitted. Specifically, as shown in FIG. 7, the configuration 50 has a configuration in which a connecting rod 51 and a drive lever 52 are directly coupled so as to be relatively rotatable. In the 4-bar link mechanism configured in this manner, the period during which the tuck-in head is positioned near the first position (dwelling period) is shorter than that of the 6-bar link mechanism, but the tuck-in operation is not problematic. done.

(2) In the above description, the case where the reversing drive unit is composed of a multi-joint link mechanism including a crank mechanism has been described. However, in the present invention, the reversing drive section is not limited to that configured using a crank mechanism, and may be configured using a cam mechanism. That is, in the configuration described above, the reversing drive section may be configured by replacing the crank mechanism with a cam mechanism. Specifically, when the parts other than the crank mechanism have the same structure as the above-described embodiment, the reversing drive portion has a structure in which the cam mechanism is connected to the rocking lever in that structure.

More specifically, the cam mechanism includes a cam mounted so as not to rotate relative to the drive shaft, a cam lever provided so as to swing according to the rotation of the cam, and one end connected to the cam lever. and a lever-shaped rod (corresponding to the connecting rod in the above embodiment) that is driven to be displaced as the cam lever swings. The cam mechanism is then connected with the swing lever at the other end of the rod. Further, in the connected state, the rod is in a state in which its longitudinal direction is substantially horizontal. Therefore, in this configuration, as the cam lever swings due to the rotation of the cam, the rod reciprocates in the front-rear direction with its longitudinal direction substantially aligned with the horizontal direction. It is driven to reciprocate in the same manner as in the example.

(3) In the present invention, the reversing drive unit is connected to the drive shaft so as to use the drive shaft as a drive source, and the member directly connected to the drive shaft is attached to the drive shaft so as not to rotate relative to the drive shaft. be done. In addition, in the above-described embodiment, the crank hub 162 of the crank mechanism 16, which is a member thereof, has a split tightening structure and is attached to the drive shaft 8 by split tightening. However, in the case where the reversing drive part in the present invention includes a crank mechanism, it is not limited to a structure in which the crank hub has a split tightening structure as a structure for mounting the crank hub.

For example, the crank hub may be a cylindrically formed member without a slit for a split tightening structure. Furthermore, the crank hub is configured such that a plurality of female threaded holes are formed that penetrate in the radial direction and are arranged at regular intervals in the circumferential direction. In addition, in the reversing drive portion (crank mechanism), a screw member is screwed into each female screw hole of the crank hub with the one end portion of the drive shaft being inserted into the crank hub. The crank hub may be attached to the drive shaft so as not to be relatively rotatable while being pressed against the one end of the drive shaft.

Alternatively, the crank hub may be a cylindrical member as described above, and the crank hub may be formed with one or more (preferably a plurality of) through holes penetrating in the radial direction. On the other hand, the drive shaft is configured such that a plurality of female screw holes arranged in the circumferential direction are formed at the one end. However, the plurality of female screw holes are formed so as to correspond to a plurality of possible mounting phases of the crank hub in relation to the through hole in the crank hub. In addition, in the reversing drive unit (crank mechanism), the internal thread of the drive shaft is aligned with the through hole of the crank hub in the desired mounting phase with the one end of the drive shaft being fitted into the crank hub. By screwing the screw member into the hole, the crank hub can be attached to the drive shaft so as not to be relatively rotatable.

Regarding the mounting of a member directly connected to the drive shaft in such a reversing drive unit, even if the reversing drive unit is configured to include a cam mechanism as described above, the above The cam can be attached to the drive shaft by the same configuration as the attachment of the crank hub described in .

In the above description, the structure (mounting structure) for mounting a member that is directly connected to the drive shaft in the reversing drive unit to the drive shaft, and the mounting phase of the member to the drive shaft can be changed. explained. However, in the reversing drive unit according to the present invention, the attachment configuration is not limited to one in which the attachment phase can be changed as described above. , the mounting phase may be unchangeable.

(4) In the above embodiment, the drive transmission section 14 is composed of two connecting levers (the first connecting lever 141 and the second connecting lever 142). Further, the drive transmission portion 14 composed of the two connecting levers is configured such that the connecting angle θ is approximately 90° when the tuck-in head 3 is positioned at the first position. However, in the present invention, even when the drive transmission portion is composed of two connecting levers, the connecting angle is approximately 90° when the tuck-in head is positioned at the first position. It is not limited to what is configured to be.

Specifically, when the mounting phase of the first connecting lever with respect to the intermediate transmission shaft is the state in which the tuck-in head is positioned at the first position, the first connecting lever is moved vertically from the intermediate transmission shaft. The drive transmission portion may be configured to be attached to the intermediate transmission shaft while extending in an angular direction. Further, with the tuck-in head positioned at the first position, with the tuck-in head positioned at the first position, the through hole at the other end of the first connecting lever is attached to the drive transmission portion. The first connecting lever may be formed so that the height position of is different from the height position of the through hole at the other end of the swing arm. In either case, the second connecting lever has a length dimension different from that of the above embodiment in order to connect the first connecting lever and the swing arm.

Further, in the above-described embodiment, the drive transmission portion 14 is configured so that the connection angle θ is approximately 90° when the tuck-in head 3 is positioned at the first position, and the tuck-in head 3 is positioned at the first position. The position of the support shaft 25 is set so that the connection angle θ is maintained substantially constant throughout the reciprocating motion between the position and the second position (the retracted position). However, in the present invention, the position of the support shaft is not limited to such a setting, and may be set such that the connection angle changes during the reciprocating motion driving. .

It should be noted that if the link mechanism composed of the two connecting levers and the swing arm in the drive transmission section is formed in a form different from that of the above-described embodiment as described above, the motion of the intermediate transmission shaft can be controlled by swinging. The efficiency of transmission to the arm is worse than in the above embodiment. However, even if the link mechanism is formed in such a manner, the swing arm (tuck-in head) can be configured by configuring the reversing drive section so that the rotation amount of the intermediate transmission shaft is larger than that of the above-described embodiment. can be obtained.

Further, in the above-described embodiment, the connecting portion CP between the swing arm 13 and the second connecting lever 142 is set at a position closer to the other end than the intermediate portion 13c of the swing arm 13 in the longitudinal direction. However, the position of the connecting portion is not limited to the other end side of the swing arm, and may be set, for example, at an intermediate portion of the swing arm.

Also, the case where the drive transmission unit is composed of two connecting levers has been described above. However, in the present invention, the drive transmission section is not limited to being configured with two connecting levers, and may be configured with a single connecting lever. However, in that case, if the connecting structure between the connecting lever and the swinging arm is configured in the same manner as the connecting structure between the second connecting lever 142 and the swinging arm 13 in the above-described embodiment, the swinging arm will swing. become immobile. Therefore, in that case, the connection structure between the single connecting lever and the swing arm is composed of, for example, a connecting shaft fitted on one side and a hole formed on the other side into which the connecting shaft is inserted. At the same time, it is conceivable that the hole formed on the other side is an elongated hole formed to allow the swing motion.

(5) In the above embodiment, in an air jet loom (single width loom) 1 that weaves a single fabric T in the weaving width direction, the tuck-in head 3 on the opposite side of the air tuck-in device 2 reciprocates. This is an example in which the present invention is applied to the reciprocating motion mechanism 7 to be moved. However, the air jet loom on which the present invention is based is not limited to the single-width loom as described above, and may be a multiple-width loom that simultaneously weaves a woven fabric divided into a plurality of pieces in the weaving width direction. . When the air jet loom is such a multi-width loom, the reciprocating motion mechanism in the air tuck-in device according to the present invention includes a tuck-in head for forming the middle selvedge in addition to the tuck-in head on the side opposite to the yarn feeding side. It can also be applied as a reciprocating mechanism.

Two tuck-in heads for forming the middle selvedge are provided between the divided woven fabrics so as to be adjacent to the ends of both woven fabrics. However, when applied to the tuck-in head for forming the middle ear as described above, the structure for reciprocating the two tuck-in heads (swing arm, drive transmission section, etc.) is one as in the above embodiment. It is not limited to one set provided for each tuck-in head. For example, a swing arm may be provided for each tuck-in head (two swing arms are supported by the support shaft), and a single drive transmission section may be connected to both swing arms. . Alternatively, two tuck-in heads may be supported by a single swinging arm, and the single swinging arm and drive transmission section may be shared by the two tuck-in heads.

In the case of an air jet loom, the center of the maximum weaving width of the loom in the weaving width direction is used as a reference, and the weaving width is changed by changing the positions of the left and right weaving ends with respect to the center. There is a standard loom. In the center-based loom, the arrangement of the tuck-in heads on the yarn feeder side and the yarn feeder side is changed as the weaving width of the woven fabric to be woven is changed. Therefore, when the air jet loom is such a center-based loom, it is possible to apply the reciprocating motion mechanism in the air tuck-in device of the present invention as a mechanism for reciprocating the tuck-in head on the yarn feeding side. .

(6) In the above-described embodiment, the reciprocating mechanism 7 has a configuration in which the intermediate transmission shaft 11 is driven on both sides in the axial direction (double-sided drive). That is, the reciprocating mechanism 7 is configured such that the reversing driving units 12 are provided on both sides of the air jet loom 1 and the reversing driving units 12 are connected to both ends of the intermediate transmission shaft 11 respectively. However, in the present invention, the reciprocating motion mechanism is not limited to the one configured to drive the intermediate transmission shaft on both sides, and the reversing drive section is provided only on one side of the air jet loom and the intermediate transmission shaft is driven. The one end and the drive shaft may be connected at the reversing drive portion to drive the intermediate transmission shaft on one side.

As for the drive shaft as the drive source of the reciprocating mechanism, in the above-described embodiment, the drive shaft 8 is mechanically connected to the loom main shaft MS and is rotationally driven by the loom main shaft MS. That is, in the above-described embodiment, the driving source configured to rotationally drive the drive shaft 8 is the driving motor of the loom that rotationally drives the loom main shaft MS. However, in the present invention, the drive source configured to rotationally drive the drive shaft is not limited to such a prime mover motor, and may be a dedicated drive motor independent of the prime mover motor. In that case, the driving of the dedicated drive motor is controlled so as to synchronize with the driving motor.

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

1 air jet loom 2 air tuck-in device 3 tuck-in head 3a slit 3b slit bottom 3c tuck-in nozzle 3d guide portion 3e inclined surface 3f release nozzle 4 reed 4a reed fins 5 yarn feed cutter 6 cutter 6a on the opposite yarn feed side movable blade 6b Fixed blade 7 Reciprocating mechanism 8 Drive shaft 9 Loom frames 10, 20 Bearing 11 Intermediate transmission shaft 12 Reversing drive unit 13 Swing arm 13a Front side surface 13b Rear side surface 13c Intermediate portion 14 Drive transmission unit 141 First connection lever 141a Slotted Part 142 Second connecting lever 15 Temple bar 16 Crank mechanism 161 Connecting rod 161a Through hole 162 Crank hub 162a Insertion hole 162b Slotted part 163 Eccentric shaft 17 Swing lever 18 Drive lever 18a Slotted part 19 Connecting rod 21 Lever shaft 22 , 23, 24, 27, 28 connecting shaft 25 support shaft 26 bracket 30 support mechanism 31 support portion 311 first bracket 312 second bracket 312a base portion 312b projecting portion 313 third bracket 32 mounting portion 321 mounting bracket 321a support Part mounting part 321b Groove 321c Fixing part 322 Stopping member 322a Receiving part 322b Projecting part 40 First screw member 41 Second screw member 42 Third screw member 43 Fourth screw member 44 Screw member 50 Reversing drive part (4 joint link mechanism)
51 connecting rod 52 drive lever MN main nozzle Y weft W warp CF cloth fell C catch cord T woven cloth MS loom main shaft WL warp line CP connecting portion θ connecting angle P1 first connecting point P2 second connecting point F1 first fulcrum F2 second fulcrum

Claims (7)

An air tuck-in device provided in an air jet loom and performing a tuck-in operation by jetting air from a tuck-in nozzle, comprising: a pair of tuck-in heads provided on the yarn feeding side and the opposite yarn feeding side and having the tuck-in nozzles; A drive shaft that is synchronously and continuously driven to rotate in one direction, and a reciprocating mechanism that supports at least the tuck-in head on the opposite yarn feeding side and uses the drive shaft as a drive source, and is woven in the front-rear direction of the loom. A reciprocating motion mechanism is provided for reciprocating the tuck-in head between a first position on the front side and a second position spaced apart from the cloth fell, and the tuck-in head is moved to the first position by the reciprocating motion. An air tuck-in device for an air jet loom, wherein the second position is a position where the tuck-in head overlaps the cloth fell, and the second position is a position where the tuck-in head is separated from the cloth fell on the side opposite to the reed side. in
The reciprocating mechanism includes an intermediate transmission shaft that is rotatably supported by the loom frame and extends in the weaving width direction, connects the intermediate transmission shaft and the drive shaft, and reciprocates and reversely drives the intermediate transmission shaft. a reversing drive unit; and a swing arm which is supported at one end by a support shaft provided above the warp line and is provided so as to be swingable about the axis of the support shaft, and the tuck-in head at the other end. and a drive transmission part that connects the swing arm and the intermediate transmission shaft and is attached to the intermediate transmission shaft so that its position can be changed in the weaving width direction. Air tuck-in device in air jet loom.
2. An air tuck-in device for an air jet loom according to claim 1, wherein said support shaft is arranged in the vicinity of said cloth fell including right above said cloth fell in said longitudinal direction.
The drive transmission portion includes a first connecting lever attached at one end so as not to rotate relative to the intermediate transmission shaft, and a first connecting lever rotatably connected at one end to the other end of the first connecting lever. 3. The air tuck-in device for an air jet loom according to claim 1, further comprising a second connecting lever rotatably connected at the other end to the moving arm.
4. The air jet loom according to claim 3, wherein the connecting portion between the swing arm and the second connecting lever is located on the other end side of the intermediate portion in the longitudinal direction of the swing arm. air tuck-in device in.
The angle formed by the first connecting lever and the second connecting lever is approximately 90° when the tuck-in head is positioned at one of the first position and the second position. The position of the connecting portion and the length dimension of both connecting levers are set to , and the support is such that the angle is approximately 90° even when the tuck-in head is positioned at the other position with respect to the one position. 5. The air tuck-in device for an air jet loom according to claim 4 , wherein the position of the shaft is set. 6. An air tuck-in for an air jet loom according to claim 1, wherein said reversing drive section is a multi-joint link mechanism including a crank mechanism attached to said drive shaft. Device.
7. The crank mechanism according to claim 6, wherein the crank mechanism includes a crank hub mounted so as not to rotate relative to the drive shaft, and the phase of mounting of the crank hub to the drive shaft can be changed. Air tuck-in device in air jet loom.

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