EP3650594B1 - Luftdüsenwebmaschine mit lufteinziehvorrichtung - Google Patents

Luftdüsenwebmaschine mit lufteinziehvorrichtung Download PDF

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Publication number
EP3650594B1
EP3650594B1 EP19205302.3A EP19205302A EP3650594B1 EP 3650594 B1 EP3650594 B1 EP 3650594B1 EP 19205302 A EP19205302 A EP 19205302A EP 3650594 B1 EP3650594 B1 EP 3650594B1
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EP
European Patent Office
Prior art keywords
tuck
head
driving
shaft
section
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EP19205302.3A
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English (en)
French (fr)
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EP3650594A1 (de
Inventor
Koichi Tamura
Keiichi Myogi
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Tsudakoma Corp
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Tsudakoma Industrial Co Ltd
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Publication of EP3650594A1 publication Critical patent/EP3650594A1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/40—Forming selvedges
    • D03D47/48—Forming selvedges by inserting cut end of weft in next shed, e.g. by tucking, by blowing

Definitions

  • the present invention relates to an air jet loom with an air tuck-in device.
  • the air tuck-in device is provided in the air jet loom and performs a tuck-in operation by air jetting with tuck-in nozzles.
  • the air tuck-in device includes a pair of tuck-in heads that are each provided on a corresponding one of a weft-supply side and a side opposite to the weft-supply side and that have the tuck-in nozzles, a driving shaft that is continuously rotationally driven in one direction in synchronism with a main shaft of the loom, and a reciprocating motion mechanism that supports at least the tuck-in head provided on the side opposite to the weft-supply side, that uses the driving shaft as a driving source, and that causes the tuck-in head to undergo a reciprocating motion between a first position that is situated on a side of a cloth fell and a second position that is situated away from the cloth fell in a
  • the first position is a position where the reciprocating motion causes the tuck-in head to overlap the cloth fell
  • the second position is a position where the tuck-in head is situated away from the cloth fell on a side opposite to a side of a reed.
  • a so-called air tuck-in device that is an air jet tuck-in device.
  • the air tuck-in device performs a tuck-in operation on the weft-supply side and the side opposite to the weft-supply side.
  • the tuck-in operation an end portion of a weft that has been inserted is folded in (tucked in) by air jetting into a warp shed in which a subsequent weft is inserted.
  • the tuck-in device includes tuck-in heads having tuck-in nozzles for performing air jetting.
  • the tuck-in heads are each provided on a corresponding one of the weft-supply side and the side opposite to the weft-supply side.
  • an air jet loom including such an air tuck-in device
  • the disposition of a tuck-in head is changed in the weaving-width direction in correspondence with the positions of selvages after changing the weaving width of the cloth.
  • the disposition of the tuck-in head on the side opposite to the weft-supply side is changed.
  • the arrangement of the tuck-in head on the weft-supply side and the tuck-in head on the side opposite to the weft-supply side is changed.
  • the reed is, in general, also changed. That is, when the disposition of the tuck-in head is changed due to the change in the weaving width, the reed is also changed to a reed having a width corresponding to the changed weaving width. However, in this case, it is necessary to provide a plurality of reeds having widths corresponding to respective possible weaving widths.
  • a so-called retraction-type air tuck-in device in which, in a front-rear direction of a loom, a tuck-in head is caused to reciprocate between a tuck-in position, where the tuck-in operation is performed, and a retracted position, where the above-described interference is prevented, has been hitherto proposed as an air tuck-in device that is provided for the purpose of making it unnecessary to provide such a plurality of reeds.
  • a device that is disclosed in European Unexamined Patent Application Publication No. 0534429 (hereunder referred to as "existing device") is provided as an example of such a retraction-type air tuck-in device.
  • the existing device is formed so that a tuck-in head (tuck-in nozzles) is caused to reciprocate as described above by a reciprocating motion mechanism in which a driving shaft is a driving source.
  • the reciprocating motion mechanism includes a cam mechanism that serves as a driving mechanism and a link mechanism that transmits the motion of the cam mechanism to the tuck-in head.
  • the cam mechanism includes a cam that is mounted on the driving shaft so as to be incapable of rotating relative to the driving shaft, and a lever (cam lever) that is provided so as to swing in the front-rear direction of the loom in accordance with the rotation of the cam.
  • the link mechanism includes a link rod that is connected at one end to the cam lever with a pin of the link rod being inserted in a long hole of the cam lever, and a slide member that is connected at one end to the link rod so as to be pivotally connected to the other end of the link rod and that is supported so as to be slidable in the front-rear direction at the loom.
  • the nozzles (tuck-in head) that perform air jetting for performing a tuck-in operation is supported so as to be fixed to the other end of the slide member.
  • the retraction-type tuck-in device is a device that is based on the assumption that the disposition of a tuck-in head is changed in the weaving-width direction in accordance with the change in the weaving width as described above.
  • the disposition of the tuck-in head is changed in the weaving-width direction in accordance with the change in the weaving width of the cloth that is woven.
  • the slide member which is a member that directly supports the tuck-in head, is moved in the weaving-width direction.
  • the slide member since the slide member is formed so that the slide member is connected to the driving mechanism (cam mechanism) by the link rod, when changing the disposition of the tuck-in head, not only the slide member, but also the driving mechanism that is connected to the slide member needs to be moved in the weaving-width direction. That is, in the existing device, when the disposition of the tuck-in head is changed due to the change in the weaving width, the entire reciprocating motion mechanism needs to be moved in the weaving width direction. Therefore, it is very troublesome to change the disposition of the tuck-in head.
  • the present invention assumes an air tuck-in device of an air jet loom, the air tuck-in device including a reciprocating motion mechanism that causes a tuck-in head to undergo a reciprocating motion between a first position that is situated on a side of a cloth fell and a second position that is situated away from the cloth fell in a front-rear direction of the loom.
  • the so-called "first position” in the present invention is a position where the tuck-in head overlaps the cloth fell in the front-rear direction of the loom when the tuck-in head reciprocates. More specifically, the "first position” is a position where the above-described tuck-in operation can be performed due to the tuck-in head being positioned at or near the first position, specifically, a position where the cloth fell is positioned in the range of existence of the slit formed in the tuck-in head in the front-rear direction of the loom.
  • the so-called "second position” in the present invention is a position where the tuck-in head is situated away from the cloth fell on the side opposite to the side of the reed in the front-rear direction of the loom when the tuck-in head reciprocates. More specifically, the "second position” is a position (retracted position) where the tuck-in head does not interfere with the reed and is retracted from the reed even if the reed has reached the most advanced position when the tuck-in head is positioned at the second position.
  • the reciprocating motion mechanism includes an intermediate transmission shaft that is rotatably supported by a frame of the loom and that extends in a weaving-width direction, a reverse driving section that connects the intermediate transmission shaft and the driving shaft to each other and that reciprocatingly reversely drives the intermediate transmission shaft, a swinging arm that is supported at one end by a supporting shaft provided above a warp line, that is provided so as to be swingable around an axis of the supporting shaft, and that supports at other end the tuck-in head, and a driving transmission section that connects the swinging arm and the intermediate transmission shaft to each other and that is mounted on the intermediate transmission shaft so that a position of the driving transmission section in the weaving-width direction with respect to the intermediate transmission shaft is changeable.
  • the supporting shaft in the front-rear direction, may be disposed in a range near the cloth fell, the range including a location directly above the cloth fell.
  • the driving transmission section may include a first connecting lever that is mounted at one end on the intermediate transmission shaft so as to be incapable of rotating relative to the intermediate transmission shaft, and a second connecting lever that is connected at one end to other end of the first connecting lever so as to be rotatable with respect to the other end of the first connecting lever and that is connected at other end to the swinging arm so as to be rotatable with respect to the swinging arm.
  • a connection portion where the swinging arm and the second connecting lever are connected to each other is positioned closer than an intermediate portion of the swinging arm in the longitudinal direction to a side of the other end of the swinging arm.
  • a position of the connection portion and lengths of both the connecting levers are set so that an angle formed by the first connecting lever and the second connecting lever is substantially 90 degrees in a state in which the tuck-in head is positioned at one of the first position and the second position, and a position of the supporting shaft is set so that the angle is substantially 90 degrees even in a state in which the tuck-in head is positioned at other of the first position and the second position with respect to the one of the first position and the second position.
  • the reverse driving section may be an articulated link mechanism including a crank mechanism that is mounted on the driving shaft.
  • the crank mechanism may include a crank hub that is mounted on the driving shaft so as to be incapable of rotating relative to the driving shaft, and may be formed so that a mounting phase of the crank hub with respect to the driving shaft is changeable.
  • a tuck-in head is supported by the swinging arm, and the driving transmission section is connected to the swinging arm to impart a reciprocating swinging motion to the swinging arm.
  • the reverse driving section corresponding to the driving mechanism of the above-described existing device is not directly connected to the link rod that imparts a reciprocating motion to the slide member that supports the tuck-in head as it is in the existing device, but is connected to the driving transmission section via the intermediate transmission shaft that is provided so as to extend in the weaving-width direction.
  • the reciprocating motion mechanism of the tuck-in device has a configuration in which the reverse driving section causes the intermediate transmission shaft to be reciprocatingly reversely driven, and the swinging arm is reciprocatingly swingingly driven with the intermediate transmission shaft that undergoes reciprocating reverse motion in this way being a driving source.
  • the reciprocating motion mechanism since the mounting position of the driving transmission section connected to the swinging arm with respect to the intermediate transmission shaft can be changed in the weaving-width direction that is an axial direction of the intermediate transmission shaft, the arrangement of the driving transmission section and the swinging arm to which the driving transmission section is connected can be changed in the weaving-width direction. That is, the reciprocating motion mechanism is formed so that, of the entire reciprocating motion mechanism, only the swinging arm that supports the tuck-in head and the driving transmission section connected to the swinging arm can move in the weaving-width direction.
  • the air tuck-in device when changing the disposition of a tuck-in device due to a change in the weaving width, it is not necessary to move the entire reciprocating motion mechanism as it is in the existing device, and the disposition of the tuck-in head is changed by only moving the swinging arm, which directly supports the tuck-in head, and the driving transmission section, which is an accompanying portion of the swinging arm, without changing the disposition of the reverse driving section of the reciprocating motion mechanism. Therefore, compared to the existing device, the disposition of the tuck-in head can be easily changed in the weaving-width direction without considerable trouble.
  • the tuck-in head is supported at the other end of the swinging arm that can swing around the axis of the supporting shaft disposed at the side of the one end, and the tuck-in head reciprocates by swinging around the axis of the supporting shaft. Moreover, by forming the air tuck-in device so that the supporting shaft is disposed in the above-described range near the cloth fell, compared to when the supporting shaft is disposed outside this range, the path of the tuck-in head that undergoes a reciprocating swinging motion is in a state that is closer to a parallel state with respect to the warp line.
  • the first position where the above-described tuck-in operation can be performed is a position that is closer to the warp line. As a result, the above-described tuck-in operation can be more properly performed.
  • the driving transmission section so as to include the first connecting lever and the second connecting lever as described above, compared to when the driving transmission section includes a single connecting lever, the life of the swinging arm and the life of the driving transmission section can be increased.
  • the connection structure for connecting the swinging arm and the connecting lever needs to be a structure in which a connection portion that is provided on one of the swinging arm and the connecting lever can be displaced in a longitudinal direction of the other of the swinging arm and the connecting lever. This is because, since the swing fulcrum of the swinging arm and the swing fulcrum of the connecting lever differ from each other, for example, when the connection portion is provided at a predetermined position on the swinging arm, the distance from the connection portion to the swing fulcrum of the connecting lever (axis of the intermediate transmission shaft) changes due to the swinging of the swinging arm.
  • connection structure for example, a structure in which a connecting pin is provided at the swinging arm as the connection portion, a long hole extending in a longitudinal direction of the connecting lever is formed in the connecting lever, and the connecting pin is inserted into the long hole to connect them to each other may be considered.
  • the connecting pin slides and is displaced in the long hole due to the swinging of the swinging arm, as a result of which the distance from the swing fulcrum of the connecting lever to the connection portion changes.
  • the driving transmission section when the driving transmission section is formed so as to include the first connecting lever and the second connecting lever as described above, the driving transmission section has a configuration in which, since the angle between the first connecting lever and the second connecting lever changes, the linear distance between the one end of the first connecting lever and the other end of the second connecting lever can change. Therefore, according to the structure, even if the connection portion of the swinging arm is connected to the other end of the driving transmission section (second connecting lever) so as to be incapable of being displaced from the other end of the driving transmission section, since the angle between the first connecting lever and the second connecting lever changes due to the swinging of the swinging arm, the change in distance between the connection portion and the axis of the intermediate transmission shaft caused by the swinging can be absorbed.
  • the driving transmission section can have a configuration that does not include a portion that is displaced by sliding as it is included in the configuration described above, for example, wear caused by the sliding does not occur, as a result of which the life of the swinging arm and the life of the driving transmission section can be increased.
  • the life of the bearing that is provided at the connection portion can be increased. That is, by setting the position of the connection portion in this way, the distance from the supporting shaft that supports the swinging arm to the connection portion is increased. Therefore, a moment load (force that causes the swinging arm that supports the tuck-in head to swing) that acts upon the bearing is reduced, as a result of which the life of the bearing can be increased.
  • the driving transmission section is formed so as to include the first connecting lever and the second connecting lever as described above
  • the air tuck-in device so as to set the position of the connection portion, the length of each connecting lever, and the position of the supporting shaft so that the angle between both of the connecting levers is substantially 90 degrees in a state in which the tuck-in head is in the first position and the second position
  • motion is efficiently transmitted when swinging the swinging arm due to reciprocating rotation of the intermediate transmission shaft. Therefore, the tuck-in head is efficiently reciprocated by the reciprocating motion mechanism, and the load that is exerted upon the reciprocating motion when the tuck-in head is caused to undergo a predetermined reciprocating motion is reduced.
  • the air tuck-in device by forming the reverse driving section from the articulated link mechanism that converts the rotation of the driving shaft into a reciprocating motion by the crank mechanism, manufacturing costs of the air tuck-in device according to the present invention can be reduced.
  • the reverse driving section be formed so that a stopping period for allowing the tuck-in head to be stopped as long as possible near the first position is provided.
  • a configuration for acquiring such a stopping period in general, a configuration using a cam mechanism can be considered.
  • the articulated link mechanism including a crank mechanism as that described above is formed as the configuration of the reverse driving section, and the reverse driving section is formed so that the above-described stopping period is provided, compared to the case in which the cam mechanism is used as described above, the reverse driving section is inexpensive. Therefore, by forming the reverse driving section in this way, the manufacturing costs of the air tuck-in device can be reduced.
  • the reverse driving section includes the articulated link mechanism including the crank mechanism as described above, by forming the crank mechanism so that the mounting phase can be changed, the phase of the reciprocating motion of the tuck-in head can be changed by only changing the mounting phase, so that it is possible to easily deal with a change in the timing in which the tuck-in head is positioned at the first position due to a change in the weaving condition.
  • an air jet loom 1 that is assumed in the present invention includes an air tuck-in device 2 that performs a tuck-in operation in which an end portion of a weft Y (hereunder referred to as "weft end portion") that has been inserted by compressed air that is jetted from a main nozzle MN is folded in (tucked in) by air jetting into a shed of a warp W in which a succeeding weft Y is inserted.
  • weft end portion an end portion of a weft Y (hereunder referred to as "weft end portion") that has been inserted by compressed air that is jetted from a main nozzle MN is folded in (tucked in) by air jetting into a shed of a warp W in which a succeeding weft Y is inserted.
  • the air tuck-in device 2 includes tuck-in heads 3 for performing a tuck-in operation.
  • each tuck-in head 3 includes a slit 3a in which the weft end portion is inserted and a plurality of tuck-in nozzles 3c that are used for performing the air jetting for performing the tuck-in operation, with the direction of arrangement of the tuck-in nozzles 3c being the same as the direction of extension of the slit 3a at locations above and below the slit 3a.
  • a tip-end portion of each tuck-in head 3 is a guide unit 3d having an inclined surface 3e extending continuously with the slit 3a in an up-down direction to make it easier to insert the weft Y into the slit 3a.
  • Each tuck-in head 3 includes a release nozzle 3f that is used for performing air jetting for tucking in the weft end portion from the inside of the slit 3a towards the inside of a jetting area of each tuck-in nozzle 3c (range of the air jetting by each tuck-in nozzle 3c).
  • the air tuck-in device 2 includes such tuck-in heads 3, one on a weft-supply side (main-nozzle-MN side) and the other on a side opposite to the weft-supply side in the air jet loom 1.
  • the tuck-in head 3 on the weft-supply side and the tuck-in head on the side opposite to the weft-supply side have different configurations.
  • the tuck-in head 3 on the weft supply side includes, in addition to the aforementioned slit 3a and each aforementioned nozzle, a holding hole and a holding nozzle (neither of which are shown) for holding the weft end portion in the slit 3a.
  • Each tuck-in head 3 can perform the tuck-in operation at the first position on a cloth-fell-CF side in a front-rear direction of the loom 1 (hereunder, simply referred to as "front-rear direction").
  • the first position is set as a position where the position of a bottom portion 3b of the slit 3a is substantially aligned with the position of the cloth fell CF (position that is shown by a solid line in Fig. 1 ) in the front-rear direction.
  • the tuck-in head 3 on the weft-supply side is provided near a selvage on the weft-supply side and is positioned between the main nozzle MN and the selvage on the weft-supply side.
  • the air jet loom 1 includes a catch cord C on an outer side of a selvage on the side opposite to the weft-supply side as illustrated, and the tuck-in head 3 on the side opposite to the weft-supply side is provided near the selvage on the side opposite to the weft-supply side and is positioned between the catch cord C and the selvage on the side opposite to the weft-supply side. Therefore, in the air jet loom 1, each tuck-in head 3 is disposed at a position overlapping a reed 4 (reed dent 4a) in the weaving-width direction.
  • reed 4 reed dent 4a
  • a thread cutter 5 that cuts the weft Y each time weft insertion is performed on the weft-supply side is provided on a side opposite to a selvage side with respect to the tuck-in head 3 on the weft-supply side and is disposed at a position between the tuck-in head 3 on the weft-supply side and the main nozzle MN.
  • a cutter 6 that cuts the weft Y that is formed consecutively with the catch cord C on the side opposite to the weft-supply side is provided on a side opposite to a selvage side with respect to the tuck-in head 3 on the side opposite to the weft-supply side and is disposed at a position between the tuck-in head 3 on the side opposite to the weft-supply side and the catch cord C.
  • the cutter 6 on the side opposite to the weft-supply side performs a cutting operation each time weft insertion is performed for performing the tuck-in operation, and it can be said that the cutter 6 functions as a part of the air tuck-in device 2.
  • the air tuck-in device of the present invention is formed so that the tuck-in head that may interfere with the reed dent 4a due to a beating operation (in the present embodiment, the tuck-in head 3 on the side opposite to the weft-supply side) is swingingly displaced (is reciprocated) in accordance with the beating operation.
  • the air tuck-in device of the present invention includes a reciprocating motion mechanism for reciprocating the tuck-in head in such a manner. The reciprocating motion is performed between the first position, where the tuck-in operation can be performed as described above, and the second position (retracted position), where interference as that described above is prevented from occurring.
  • the retracted position is set as a position (in Fig.
  • a reciprocating motion mechanism of the air tuck-in device of the present invention is described in detail below as a configuration of the present embodiment.
  • the tuck-in head 3 on the side opposite to the weft-supply side is driven so as to be reciprocated by a reciprocating motion mechanism 7. That is, in the present embodiment, the tuck-in head with which the reciprocating motion mechanism 7 is related is the tuck-in head 3 on the side opposite to the weft-supply side. Accordingly, unless otherwise particularly noted, "tuck-in head” refers to the tuck-in head on the side opposite to the weft-supply side.
  • the air tuck-in device 2 includes driving shafts 8 serving as driving sources of the reciprocating motion mechanism 7 (see Fig. 3 ). With one end portion of each driving shaft 8 projecting outwardly of its corresponding loom frame 9 in the weaving-width direction, each driving shaft 8 is rotatably supported with respect to its corresponding loom frame 9 via a bearing 10. Each driving shaft 8 is mechanically connected to a loom main shaft MS, and is provided so as to be continuously rotationally driven in one direction in synchronism with the loom main shaft MS. In the present embodiment, a pair of driving shafts 8 are provided, one on the weft-supply side and the other on the side opposite to the weft-supply side in the air jet loom 1.
  • the reciprocating motion mechanism 7 is provided so as to be connected to the driving shafts 8. More specifically, the reciprocating motion mechanism 7 includes an intermediate transmission shaft 11 that extends in the weaving-width direction and that is common to both driving shafts 8, and a pair of reverse driving sections 12 that connect the intermediate transmission shaft 11 and each driving shaft 8 and that reciprocatingly reversely drive the intermediate transmission shaft 11. Further, the reciprocating motion mechanism 7 includes a swinging arm 13 that is supports the tuck-in head 3 and that is swingably provided at the loom 1, and a driving transmission section 14 that transmits the reciprocating reverse motion of the intermediate transmission shaft 11 to the swinging arm 13.
  • Each structural element of the reciprocating motion mechanism 7 is as follows in detail.
  • the intermediate transmission shaft 11 is provided so as to extend between the left and right loom frames 9.
  • a temple bar 15 is provided so as to extend in the weaving-width direction, and the intermediate transmission shaft 11 is provided at a position situated closer to the take-up side of the cloth T than the temple bar 15.
  • the intermediate transmission shaft 11 is rotatably supported with respect to the loom frames 9 via a bearing (not shown), and both end portions of the intermediate transmission shaft 11 are provided so as to protrude outwardly of the corresponding loom frames 9.
  • the reverse driving sections 12 are each provided outwardly of a corresponding one of the loom frame 9 on the weft-supply side and the loom frame 9 on the side opposite to the weft-supply side.
  • the reverse driving section 12 on the weft-supply side and the reverse driving section 12 on the side opposite to the weft-supply side are symmetrically formed in the weaving-width direction. Accordingly, only the reverse driving section 12 on the side opposite to the weft-supply side is described below.
  • the reverse driving section 12 is formed from an articulated link mechanism including a crank mechanism 16 mounted on the driving shaft 8.
  • the articulated link mechanism that constitutes the reverse driving section 12 is a 6-link mechanism.
  • the reverse driving section 12 includes the crank mechanism 16 including a con'rod 161, a swinging lever 17 whose one end is connected to the con'rod 161 of the crank mechanism 16 and that is swingably supported with respect to the loom frame 9, a driving lever 18 whose one end is mounted on the intermediate transmission shaft 11 so as to be incapable of rotating relative to the intermediate transmission shaft 11, and a connecting rod 19 that connects the other end of the swinging lever 17 and the other end of the driving lever 18 to each other.
  • the crank mechanism 16 includes a crank hub 162 that is mounted on the one end portion of the driving shaft 8 so as to be incapable of rotating relative to the one end portion of the driving shaft 8, an eccentric shaft 162 that is fixed to the crank hub 162 so that the axis is positioned at a location that is decentered from the axis of the driving shaft 8 with the crank hub 162 mounted on the driving shaft 8 in this way, and a con'rod 161 that is mounted on the eccentric shaft 163 so as to be incapable of rotating relative to the eccentric shaft 163.
  • the crank hub 162 has a shaft shape as a whole, and has an insertion hole 162a in which the one end portion of the driving shaft 8 is fitted and inserted.
  • the insertion hole 162a is a hole that has a bottom and that is open at an end surface on one end side of the crank hub 162 in an axial direction.
  • the crank hub 162 has a split clamp structure including a slotted portion 162b that communicates with the insertion hole 162a. By a split-clamp fixing operation by the split clamp structure, the clamp hub 162 is mounted on the driving shaft 8 (its one end portion above) so as to be incapable of rotating relative to the driving shaft 8 inserted through the insertion hole 162a.
  • the eccentric shaft 163 is a shaft to which the con'rod 161 is connected, and, in the present embodiment, is integrated with the crank hub 162.
  • the eccentric shaft 163 is provided so as to protrude from an end surface on a side opposite to the one end side (the other end side) of the crank hub 162.
  • the eccentric shaft 163 is provided so that the axis is positioned at a location that is decentered from the center of the insertion hole 162a of the crank hub 162. Therefore, with the crank hub 162 being mounted on the driving shaft 8 as described above, the eccentric shaft 163 is in a state in which its axis is positioned at a location that is decentered from the axis of the driving shaft 8.
  • the con'rod 161 is a lever-like member having two through holes, one in each end thereof.
  • the con'rod 161 is connected at one end to the eccentric shaft 163 so as to be rotatable relative to the eccentric shaft 163.
  • a bearing 20 is fitted to the through hole 161a at one end portion of the con'rod 161.
  • the swinging lever 17 is a substantially L-shaped lever member that is bent at an intermediate portion of the swinging lever 17.
  • the swinging lever 17 is supported by the loom frame 9 so that its bent portion at its intermediate portion is swingable with respect to the loom frame 9.
  • a lever shaft 21 for supporting the swinging lever 17 is provided on the side of the loom frame 9 so as to protrude outward.
  • a through hole for assembling the swinging lever 17 to the lever shaft 21 is formed in the bent portion of the swinging lever 17.
  • the swinging lever 17 is assembled to the lever shaft 21 via a bearing, or by supporting the lever shaft 21 by the loom frame 9 so as to be rotatable with respect to the loom frame 9, the swinging lever 17 is supported by the loom frame 9 so as to be swingable with respect to the loom frame 9.
  • the swinging lever 17 is connected at one end portion to the other end portion of the con'rod 161 so as to be rotatable relative to the other end portion of the con'rod 161.
  • a bearing (not shown) into one of the through hole in the one end portion of the swinging lever 17 and the through hole in the other end portion of the con'rod 161, and by fitting and inserting a connecting shaft 22 inserted into the other of the through holes into the bearing, the swinging lever 17 and the con'rod are connected so as to be rotatable relative to each other.
  • the driving lever 18 is a lever member having a shape that is slightly bent at its intermediate portion. Two through holes are formed, one in each end portion of the driving lever 18. Further, the driving lever 18 has a split clamp structure including a slotted portion 18a that communicates with the through hole at its one end portion. By a split-clamp fixing operation by the split clamp structure with the intermediate transmission shaft 11 (one of the two end portions that is on the side opposite to the weft-supply side) inserted through the one end portion of the driving lever 18, the driving lever 18 is mounted at its one end portion on the intermediate transmission shaft 11 so as to be incapable of rotating relative to the intermediate transmission shaft 11.
  • the connecting rod 19 is a lever-like member having two through holes, one in each end thereof.
  • the connecting rod 19 is connected at its one end portion to the other end portion of the swinging lever 17 so as to be rotatable relative to the other end portion of the swinging lever 17.
  • a bearing (not shown) into one of the through hole in the one end portion of the connecting rod 19 and the through hole in the other end portion of the swinging lever 17, and by fitting and inserting a connecting shaft 23 inserted into the other of the through holes into the bearing, the connecting rod 19 and the swinging lever 17 are connected so as to be rotatable relative to each other.
  • the connecting rod 19 is connected at its other end portion to the other end portion of the driving lever 18 so as to be rotatable relative to the other end portion of the driving lever 18. Specifically, by fitting a bearing (not shown) into one of the through hole in the other end portion of the connecting rod 19 and the through hole in the other end portion of the driving lever 18, and by fitting and inserting a connecting shaft 24 inserted into the other of the through holes into the bearing, the connecting rod 19 and the driving lever 18 are connected so as to be rotatable relative to each other.
  • the swinging arm 13 that supports the tuck-in head 3 is a lever-like member having two through holes, one in each end portion.
  • the swinging arm 13 has a shape that is slightly bent between an intermediate portion 13c and the other end portion.
  • the two side surfaces that are parallel to a thickness direction correspond to a front side surface 13a and a rear side surface 13b, and the side surface on the outer side of the bent portion corresponds to the front side surface 13a.
  • the swinging arm 13 is supported by a supporting shaft 25 above a warp line WL. More specifically, the supporting shaft 25 is provided above the warp line WL at the loom 1 so as to be supported by a support mechanism 30 (described below).
  • the supporting shaft 25 is disposed above the cloth fell CF in the front-rear direction, and is disposed between the loom frame 9 on the side opposite to the weft-supply side and the selvage on the side opposite to the weft-supply side in the weaving-width direction. Further, in the above-described supported state, the supporting shaft 25 is provided so that its axial direction is the same as the weaving-width direction (axial direction of the intermediate transmission shaft 11).
  • the swinging arm 13 is supported at its one end portion by the supporting shaft 25. Therefore, the swinging arm 13 is positioned above the warp line WL, and is positioned between the loom frame 9 on the side opposite to the weft-supply side and the selvage on the side opposite to the weft-supply side in the weaving-width direction. However, the swinging arm 13 is supported by the supporting shaft 25 with its front side surface 13a facing the side of the reed 4.
  • the swinging arm 13 by assembling the swinging arm 13 to the supporting shaft 25 so that the supporting shaft 25 is inserted into the through hole in the one end portion of the swinging arm 13, the swinging arm 13 is supported at its one end portion to the supporting shaft 25. Moreover, by assembling the swinging arm 13 and the supporting shaft 25 by a bearing (not shown), or by supporting the supporting shaft 25 by the support mechanism 30 so as to be rotatable with respect to the support mechanism 30, the swinging arm 13 in the above-described disposition is swingable around the axis of the supporting shaft 25.
  • the tuck-in head 3 is supported by the swinging arm 13 that is supported as described above. More specifically, a bracket 26 is mounted on the swinging arm 13 at the position of the other end side of the swinging arm 13 adjacent to the bent portion of the swinging arm 13. The bracket 26 in its mounted state protrudes from the front side surface 13a of the swinging arm 13 when viewed in the thickness direction of the swinging arm 13, and is mounted on the swinging arm 13 so that a protrusion direction forms an acute angle with respect to the direction of extension of a portion of the swinging arm 13 situated closer than the bent portion to the other end side. Moreover, the tuck-in head 3 is mounted on a tip end portion of the bracket 26. That is, the tuck-in head 3 is supported by the swinging arm 13 via the bracket 26.
  • the tuck-in head 3 in the supported state, is in a state in which its guide unit 3d faces the side of the reed 4. In its supported state, the tuck-in head 3 is in a state in which, in the process of displacing (moving) the tuck-in head 3 towards the reed 4, in the front-rear direction, when the guide unit 3d reaches the position of the cloth fell CF, the direction of extension of the slit 3a is substantially parallel to the warp line WL.
  • the above-described cutter 6 on the side opposite to the weft-supply side is mounted on the tip end portion of the bracket 26.
  • the cutter 6 on the side opposite to the weft-supply side is in a state in which a tip end of a movable blade 6a and a tip end of a stationary blade 6b are positioned closer than a portion where the movable blade 6a and the stationary blade 6b are supported to the side of the reed 4.
  • the cutter 6 on the side opposite to the weft-supply side is positioned between the tuck-in head 3 and the catch cord C as described above in the weaving-width direction, and is positioned so that the cutter 6 can cut the weft Y inserted into the slit 3a of the tuck-in head 3 in a positional relationship with the tuck-in head 3 in the front-rear direction.
  • the driving transmission section 14 that transmits a reciprocating reverse motion of the intermediate transmission shaft 11 to the swinging arm 13 includes a first connecting lever 141 that is mounted at one end on the intermediate transmission shaft 11 so as to be incapable of rotating relative to the intermediate transmission shaft 11, and a second connecting lever 142 that connects the other end of the first connecting lever 141 and the other end of the swinging arm 13 to each other.
  • the first connecting lever 141 is a lever member having two through holes, one in each end portion.
  • the first connecting lever 141 has a split clamp structure including a slotted portion 141a that communicates with the through hole in its one end portion.
  • the second connecting lever 142 is a lever member having two through holes, one in each end portion.
  • the second connecting lever 142 is connected at its one end portion to the other end portion of the first connecting lever 141 so as to be rotatable relative to the other end portion of the first connecting lever 141.
  • a bearing (not shown) into one of the through hole in the one end portion of the second connecting lever 142 and the through hole in the other end portion of the first connecting lever 141, and by fitting and inserting a connecting shaft 27 inserted into the other of the through holes into the bearing, the second connecting lever 142 and the first connecting lever 141 are connected to each other so as to be rotatable relative to each other.
  • the second connecting lever 142 is connected at its other end portion to the other end portion of the swinging arm 13 so as to be rotatable relative to the other end portion of the swinging arm 13. Specifically, by fitting a bearing (not shown) to one of the through hole in the other end portion of the second connecting lever 142 and the through hole in the other end portion of the swinging arm 13, and by fitting and inserting a connecting shaft 28 inserted into the other of the through holes into the bearing, the second connecting lever 142 and the swinging arm 13 are connected to each other so as to be rotatable relative to each other.
  • a portion CP where the second connecting lever 142 and the swinging arm 13 are connected to each other in this way corresponds to "connection portion".
  • the reciprocating motion mechanism 7 including each structural element as described above, when the driving shaft 8 is rotationally driven by the loom main shaft MS, a reciprocating motion in the front-rear direction of the con'rod 161 is generated in the crank mechanism 16.
  • the driving shaft 8 is rotationally driven in synchronism with the loom main shaft MS so that the driving shaft 8 rotates once each time the loom main shaft MS rotates once (every one weaving cycle of the loom 1). Therefore, the con'rod 161 is reciprocated once every one weaving cycle of the loom 1.
  • the first connecting lever 141 connected to the intermediate transmission shaft 11 so as to be incapable of rotating relative to the intermediate transmission shaft 11 is swingingly driven around the axis of the intermediate transmission shaft 11. Therefore, the swinging arm 13 connected to the first connecting lever 141 by the second connecting lever 142 of the driving transmission section 14 is reciprocatingly reversely driven in the front-rear direction around the axis of the supporting shaft 25.
  • the swinging lever 17 reciprocatingly swings once every one weaving cycle of the loom 1.
  • the tuck-in head 3 that is supported by the swing arm 13 and the cutter 6 on the side opposite to the weft-supply side reciprocate in the front-rear direction once every one weaving cycle of the loom 1.
  • the reciprocating motion mechanism 7 reciprocates the tuck-in head 3 and the cutter 6 on the side opposite to the weft-supply side.
  • crank angle crank angle
  • tuck-in head 3 is reciprocatingly driven as described above, in the front-rear direction and the rotation angle of the loom main shaft MS (so-called “crank angle”; hereunder referred to as “crank angle”) is described so as to include the swinging motion of the reed 4 on the basis of Fig. 6.
  • Fig. 6 is a figure in which the horizontal axis indicates the crank angle (for one weaving cycle) and the vertical axis indicates the displacement amount in the front-rear direction of the tuck-in head 3 and the reed 4 with respect to the position of the cloth fell CF.
  • the displacement of the reed 4 is indicated by an alternate long and short dashed line
  • the displacement of the tuck-in head 3 is indicated by an alternate long and two short dashed line.
  • the crank angle when the crank angle is 0 degrees, the reed 4 reaches a most advanced position, at which time the inserted weft Y is beaten at the cloth fell CF. A tip end portion of the weft Y is held by the catch cord C.
  • the crank angle when the crank angle is 0 degrees, 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 degrees.
  • the reed 4 is displaced towards a most withdrawn position and reaches a location near the most retreated position when the crank angle is substantially 135 degrees, and reaches the most retreated position when the crank angle is 180 degrees. Then, the reed 4 advances forward towards the most retreated position. In the process of advancing forward, the reed 4 is positioned near the most retreated position from a crank angle of 180 degrees to a crank angle of substantially 225 degrees.
  • the tuck-in head 3 starts to be displaced towards the first position from when the crank angle is 5 degrees, and reaches the first position when the crank angle is 185 degrees.
  • the tuck-in head 3 starts to retract towards the retracted position from when the crank angle is 185 degrees.
  • the reverse driving section 12 of the reciprocating motion mechanism 7 that displaces the tuck-in head 3 in this way is formed from the 6-link mechanism as described above. Therefore, the tuck-in head 3 is positioned near the first position when the crank angle is substantially 150 degrees to substantially 220 degrees.
  • the tuck-in head 3 In the process of displacing the tuck-in head 3 as described above, the tuck-in head 3 is in a state in which the guide unit 3d reaches the position of the cloth fell CF when the crank angle is substantially 70 degrees. Therefore, when the tuck-in head 3 is displaced towards the first position from this angle, a part of a portion that is positioned between the catch cord C and the selvage at the weft Y whose tip end portion has been caught by the catch cord C is inserted in the slit 3a of the tuck-in head 3.
  • the part of the weft Y is in a state in which it has reached the bottom portion 3b of the slit 3a of the tuck-in head 3.
  • the cutter 6 is driven, and another portion (weft end portion) of the weft Y that is formed consecutively with the selvage at the above-described portion is cut by the cutter 6 on the side opposite to the weft-supply side on a side that is closer than the tuck-in head 3 to the catch cord C.
  • the tuck-in head 3 from when the crank angle is 206 degrees, which is prior to when the crank angle is 210 degrees at which the cutting is performed, air jetting is started by the release nozzle 3f. Therefore, the weft end portion is blown away up to the jetting area of each tuck-in nozzle 3c by the air jetting by the release nozzle 3f, and then the weft end portion is tucked in by the air jetting by each tuck-in nozzle 3c and is inserted into the shed of the weft W, so that the tuck-in operation is completed.
  • the tuck-in head 3 is positioned near the first position that overlaps the cloth fell CF in the front-rear direction when the crank angle is substantially 150 degrees to substantially 220 degrees as described above. However, from larger angles, the tuck-in head 3 is largely displaced towards the retracted position, and, when the crank angle is substantially 300 degrees, the tuck-in head 3 is completely situated away from the cloth fell CF in the front-rear direction.
  • the support mechanism 30 that supports the supporting shaft 25 is disposed on the temple bar 15 that is provided at the loom 1 as described above.
  • the configuration of the support mechanism 30 is as follows in detail.
  • the support mechanism 30 includes a supporting section 31 that supports the supporting shaft 25, and a mounting section 32 on which the supporting section 31 is mounted and that is mounted on the temple bar 15.
  • the supporting section 31 includes a combination of three brackets. Specifically, the supporting section 31 includes a first bracket 311 that supports the supporting shaft 25, a second bracket 312 that is mounted on the mounting section 32, and a third bracket 313 for causing the first bracket 311 to be supported with respect to the second bracket 312.
  • the first bracket 311 is a plate-shaped bracket.
  • a through hole (not shown) for supporting the supporting shaft 25 is formed in one end portion of the first bracket 311 so as to extend through the one end portion of the first bracket 311 in a plate thickness direction.
  • two internally threaded holes (not shown) into which screw members (first screw members) 40 for mounting the first bracket 311 onto the third bracket 313 are formed in the other end portion of the first bracket 311. The two internally threaded holes are also formed so as to extend through the first bracket 311 in the plate thickness direction.
  • the third bracket 313 is also a plate-shaped bracket. Two through holes (not shown) through which the first screw members 40 are inserted are formed in one end portion of the third bracket 313 so as to extend through the one end portion of the third bracket 313 in the plate thickness direction. By inserting the first screw members 40 inserted through the through holes of the third bracket 313 into the internally threaded holes of the first bracket 311, the first bracket 311 is assembled to the third bracket 313.
  • Two through holes are also formed in the other end side of the third bracket 313 so as to extend through the other end side of the third bracket 313 in the plate thickness direction. Screw members (second screw members) 41 for mounting the third bracket 313 onto the second bracket 312 are inserted through these through holes.
  • these two through holes are formed so that their direction of arrangement differs from the direction of arrangement of the two through holes through which the aforementioned first screw members 40 are inserted (specifically, the directions of arrangements are made orthogonal to each other).
  • the second bracket 312 includes a plate-shaped base section 312a that serves as a base, and a protruding section 312b that protrudes from a portion of the base section 312a near an intermediate portion of the base section 312a in one of the plate thickness directions of the base section 312a and that is plate-shaped.
  • the protruding section 312b has two internally threaded holes (not shown) into which the second screw members 41 are inserted.
  • the two internally threaded holes are formed so as to extend through the protruding section 312b in the plate thickness direction.
  • the two internally threaded holes are formed so that their arrangement direction is parallel to an upper surface of the base section 312a (the surface from which the protruding section 312b protrudes).
  • Two through holes are formed in respective end portions in the base section 312a of the second bracket 312 so as to extend through the base section 312a in the plate thickness direction, the end portions being end portions in the plate thickness direction of the protruding section 312b (longitudinal direction of the base section 312a).
  • the through holes are holes for inserting screw members (third screw members) 42 for mounting the second bracket 312 (supporting section 31) on the mounting section 32.
  • the mounting section 32 on which the supporting section 31 (second bracket 312) is mounted includes a mounting bracket 321 that is provided vertically on the temple bar 15, and stopping members 322 for causing the mounting bracket 321 to be in a fixed state with respect to the temple bar 15.
  • the mounting bracket 321 is a single member, and includes a supporting-section mounting portion 321a on which the supporting section 31 is mounted, and a fixing portion 321c that is directly fixed to the temple bar 15 in a state in which the mounting bracket 321 is provided vertically on the temple bar 15.
  • the supporting-section mounting portion 321a has a substantially rectangular parallelepiped shape in which the width of a side surface is smaller than the width of front and rear surfaces.
  • the width of the supporting-section mounting portion 321a (dimension in a width direction of the front and rear surfaces) is substantially the same as the dimension of the base section 312a of the above-described supporting section 31 in a longitudinal direction.
  • a groove 321b is formed in the supporting-section mounting portion 321a so as to open in an upper surface and the front and rear surfaces.
  • the groove 321b is for allowing the second connecting lever 142 of the driving transmission section 14 to be disposed as described above.
  • the groove 321b is formed so that its groove width (the space defined by an inner surface of the groove 321b) is smaller than the interval between the two through holes formed in the base section 312a of the supporting section 31.
  • Two internally threaded holes (not shown) in which the aforementioned third screw members 42 are inserted are formed in the supporting-section mounting portion 321a so as to open in an upper surface thereof on respective sides of the groove 321b at the upper surface.
  • the fixing portion 321c is a portion that is directly fixed to the temple bar 15 with the mounting bracket 321 provided vertically on the temple bar 15 as described above. However, the fixing is performed with the fixing portion 321c placed on the temple bar 15.
  • the temple bar 15 is provided so as to extend in the weaving-width direction at a location between the left and right loom frames 9. That is, a longitudinal direction (extension direction) of the temple bar 15 is the same as the weaving-width direction. Accordingly, in the description below, the longitudinal direction and a direction parallel to the longitudinal direction are both referred to as the weaving-width direction for description.
  • the side of the reed 4 of a portion (device) under consideration corresponds to a rear (side), and the side opposite to the side of the reed 4 is the front (side).
  • the fixing portion 321c is formed so that a substantially rectangular parallelepiped portion is the main body.
  • the fixing portion 321c is such that its main portion (the substantially rectangular parallelepiped portion, hereunder referred to as "main body section") is placed on the temple bar 15.
  • the fixing portion 321c is such that a long-side direction of a rectangular lower surface of the main body section is the same as the weaving-width section, and one end of the lower surface in a short-side direction is aligned with a front-side edge of an upper surface of the temple bar 15.
  • the main body section of the fixing portion 321c is formed so that the dimension of its lower surface in the short-side direction is larger than the dimension of the upper surface of the temple bar 15 in the front-rear direction. That is, in the aforementioned installed state, the main body section has a size that makes it protrude rearward from the temple bar 15 in the front-rear direction. Moreover, in the installed state, the main body section has a stepped section disposed in its lower surface and having a shape in accordance with the shape of the temple bar 15 so that a lower surface of the protruding portion is positioned below the upper surface of the temple bar 15.
  • internally threaded holes are formed in the main body section so as to open in a surface that faces the front side (front surface).
  • two internally threaded holes are formed in respective sides of an intermediate portion of the front surface in the weaving-width direction.
  • the internally threaded holes are holes for inserting screw members (fourth screw members) 43 for causing the fixing portion 321c (mounting bracket 321) to be fixed to the temple bar 15.
  • the fixing portion 321c has a portion formed so as to protrude from an upper surface of the main body section.
  • the fixing portion 321c is integrated with the supporting-section mounting portion 321c so that, in the portion that protrudes from the upper surface of the main body section, the fixing portion 321c is formed continuously with a lower surface of the supporting-section mounting portion 321a.
  • the width direction of the front and rear surfaces of the supporting-section mounting portion 321a and a long-side direction of the lower surface of the fixing portion 321c are the same.
  • Each stopping member 322 for causing the mounting bracket 321 formed as described above to be fixed to the temple bar 15 is such that a plate-shaped receiving section 322a that receives a head of the screw member is a main body.
  • Each receiving section 322a has a substantially rectangular shape when viewed in the plate thickness direction.
  • Each stopping member 322 has projecting portions 322b that project in one direction from the receiving section 322a in the plate thickness direction and that are formed so as to extend in a short-side direction of the receiving section 322a.
  • the two projecting portions 322b are formed at respective end portions of the receiving section 322a in a long-side direction.
  • Each stopping member 322 is formed so that each projecting section 322b and the receiving section 322a are integrated with each other.
  • a through hole (not shown) is formed in the center of the receiving section 322a of each stopping member 322 so as to extend therethrough in the plate thickness direction.
  • Each through hole is a hole for inserting the fourth screw member 43.
  • the two projecting portions 322b are positioned on respective sides of the through hole formed in the receiving section 322a in the long-side direction of the receiving section 322a, the size of the interval between the projecting portions 322b allows one of the projecting portions 322b to be positioned forwardly of the temple bar 15 with the fourth screw members 43 that are inserted through the through holes being inserted into the internally threaded holes of the fixing portion 321c placed on the temple bar 15 and the long-side direction of each receiving section 322a being the same as the up-down direction.
  • the receiving section 322a of each stopping member 322 has a size (dimension) that allows the projecting portions 322b to be formed with such an interval in the long-side direction.
  • the fixing portion 321c of the mounting bracket 321 is placed on the temple bar 15.
  • the stepped section of the lower surface of the fixing portion 321c is in contact with a rear-side surface of the temple bar 15.
  • two stopping members 322 and 322 are combined with respect to the fixing portion 321c in such a state and in correspondence with the two internally threaded holes formed in the fixing portion 321c.
  • the fixing portion 321c and the stopping member 322 are in a combined state.
  • each stopping member 322 being faced so that the long-side direction of the receiving section 322a is the same as the up-down direction, the fourth screw members 43 are tightened. Therefore, with the heads of the fourth screw member 43 being in contact with the respective receiving sections 322a, one of the projecting portions 322b of each stopping member 322 is in contact with the temple bar 15, and the other projecting portion 322b is in contact with the fixing portion 321c.
  • the fixing portion 321c and the stopping members 322 assembled with respect to each other sandwich the temple bar 15 by the stepped section of the fixing portion 321c and one of the projecting portions 322b of each stopping member 322.
  • the temple bar 15 is subjected to a force (clamping force) that acts upon the stopping members 322 (receiving sections 322a) via the heads due to the tightening of the fourth screw members 43, the temple bar 15 is sandwiched by the stepped section and one of the projecting portions 322b. As a result, the fixing portion 321c (mounting bracket 321) is fixed to the temple bar 15.
  • the support mechanism 30 that is placed on the temple bar 15 is such that the first bracket 311 of the supporting section 31 supports the supporting shaft 25 for supporting the above-described swinging arm 13. More specifically, in the support mechanism 30, by inserting the third screw members 42 through the respective through holes formed in the base section 312a of the second bracket 312 and by inserting the third screw members 42 into the internally threaded holes formed in the supporting-section mounting portion 321a of the mounting bracket 321, the supporting section 31 is assembled to the mounting bracket 321.
  • the supporting section 31 is assembled so that, with the supporting mechanism 30 installed on the temple bar 15 (the aforementioned installed state), the first bracket 311 mounted on the protruding section 312b of the second bracket 312 on the mounting bracket 321 via the third bracket 313 extends rearward. Therefore, in the installed state, the first bracket 311 at the supporting section 31 extends rearward from the temple bar 15 in the front-rear direction. Moreover, the through hole formed in the one end portion of the first bracket 311 is positioned substantially above the cloth fell CF.
  • the supporting shaft 25 is supported by the first bracket 311 (support mechanism 30) so that, on the one end portion side of the supporting shaft 25, the supporting shaft 25 is inserted into the through hole in the one end portion of the first bracket 311, and the other end portion protrudes towards the loom frame 9 on the side opposite to the weft-supply side in the weaving-width direction.
  • the supporting shaft 25 is supported by being inserted through the through hole in the first bracket 311 at the one end portion, or by fitting a bearing (not shown) to the through hole and fitting and inserting the supporting shaft 25 into the bearing at the one end portion.
  • the swinging arm 13 is supported as described above at the other end portion of the supporting shaft 25 that is supported in this way.
  • the swinging arm 13 that is supported by the supporting shaft 25 in this way and the intermediate transmission shaft 11 are connected to each other by the driving transmission section 14 formed as described above.
  • the first connecting lever 141 is mounted on the intermediate transmission shaft 11 with a mounting phase in which, when the tuck-in head is positioned at the first position (when the crank angle is 185 degrees), the first connecting lever 141 extends substantially upward from the intermediate transmission shaft 11.
  • the first position is a position where the position of the bottom portion 3b of the slit 3a of the tuck-in head 3 is substantially aligned with the position of the cloth fell CF.
  • the first connecting lever 141 has a length that allows the position of the height of the through hole in the other end portion of the first connecting lever 141 to be substantially aligned with the position of the height of the through hole in the other end portion of the swinging arm 13 with the tuck-in head 3 positioned at the first position.
  • the second connecting lever 142 has a length that allows the first connecting lever 141 and the swinging arm 13 to be in a connected state.
  • connection angle an angle ⁇ that is formed by the first connecting lever 141 and the second connecting lever 142 (hereunder referred to as "connection angle") in the driving transmission section 14 is substantially 90 degrees. That is, in this state, a longitudinal direction of the second connecting lever 142 is a substantially horizontal direction.
  • this portion is formed as a link mechanism that includes the first connecting lever 141 and the second connecting lever 142 of the driving transmission section 14 and the swinging arm 13.
  • the link mechanism is formed so that the while the tuck-in head 3 is reciprocatingly driven between the first position and the second position (the retracted position), the connection angle ⁇ is kept at a substantially constant value.
  • a connection point where the first connecting lever 141 and the second connecting lever 142 are connected to each other is a first connection point P1
  • a connection point where the swinging arm 13 and the second connecting lever 142 are connected to each other is a second connection point P2.
  • a swing center of the first connecting lever 141 (axis of the intermediate transmission shaft 11), which is a fulcrum on one end side of the link mechanism, is a first fulcrum F1
  • a swing center of the swinging arm 13 (axis of the supporting shaft 25), which is a fulcrum on the other end side of the link mechanism is a second fulcrum F2.
  • the link mechanism is formed so that the distance from the first fulcrum F1 to the first connection point P1, the distance from the second fulcrum F2 to the second connection point P2, and an angle of a line segment connecting the second fulcrum F2 and the second connection point P2 with respect to a line segment connecting the first fulcrum F1 and the first connection point P1 are set in a relationship that maintains the connection angle ⁇ at the same angle during the reciprocation driving operation. Therefore, during the reciprocation driving operation, the connection angle ⁇ is substantially 90 degrees.
  • the position of the connection portion CP is specified.
  • the position of the supporting shaft 25 is not limited to a specified position, and may differ in accordance with the shape of the swinging arm 13.
  • the connection angle ⁇ may not be substantially 90 degrees during the reciprocation driving operation. Therefore, the above-described configuration is also a configuration in which the position of the supporting shaft 25 is set so that the connection angle ⁇ is substantially 90 degrees during the reciprocation driving operation (even if the tuck-in head 3 is at the retracted position).
  • the swinging arm 13 supported by the support mechanism 30 via the supporting shaft 25 is positioned at a location that overlaps the mounting section 32 (mounting bracket 321) of the support mechanism 30. Therefore, the driving transmission section 14 that is connected to the swinging arm 13 is also disposed so as to overlap the mounting bracket 321 in the weaving-width direction.
  • the intermediate transmission shaft 11 is disposed forwardly of the temple bar 15, whereas the swinging arm 13 is supported by the supporting shaft 25 disposed above the cloth fell CF that is positioned rearwardly of the temple bar 15. Therefore, the driving transmission section 14 that connects the intermediate transmission shaft 11 and the swinging arm 13 to each other is disposed so that a part of the second connecting lever 142 overlaps the mounting bracket 321.
  • the groove 321b that opens in the front and rear surfaces of the supporting-section mounting portion 321a is formed in the mounting bracket 321.
  • the groove 321b is formed so that the position of the second connecting lever 142 of the driving transmission section 14 is included in an existence range of the groove 321b in the up-down direction. Therefore, with the intermediate transmission shaft 11 and the swinging arm 13 connected to each other, the driving transmission section 14 is in a state in which the second connecting lever 142 extends in the groove of the mounting bracket 321.
  • the arrangement of the tuck-in head 3 and the cutter 6 on the side opposite to the weft-supply side is changed in accordance with the changing of the cloth T (weaving width).
  • the arrangement is changed as follows.
  • the driving transmission section 14 a screw member 44 of the split clamp structure of the first connecting lever 14 is operated and a split-clamp fixed state is eased, and the first connecting lever 141 (driving transmission section 14) that is fixed to the intermediate transmission shaft 11 is unfixed. Therefore, with the intermediate transmission shaft 11 inserted through the through hole formed in the one end portion of the first connecting lever 141, the driving transmission section 14 is in a movable state relative to the intermediate transmission shaft 11 in the axial direction.
  • the mounting section 32 is unfixed from the temple bar 15. Specifically, the fourth threaded members 43 are loosened, and a state in which the clamping force acts upon the temple bar 15 is stopped.
  • the support mechanism 30 and the swinging arm 13, supported by the support mechanism 30, and the driving transmission section 14, connected to the swinging arm 13 can have their positions adjusted in the weaving-width direction with respect to the intermediate transmission shaft 11 and the temple bar 15 fixedly provided at the loom 1 (in particular, the temple bar 15 that supports the swinging arm 13 via, for example, the support mechanism 30).
  • the position of, for example, the support mechanism 30 is changed.
  • the position is changed by sliding the support mechanism 30 on the temple bar 15 and sliding the driving transmission section 14 with respect to the intermediate transmission shaft 11.
  • the support mechanism 30 is fixed again to the temple bar 15 and the driving transmission section 14 is fixed to the intermediate transmission shaft 11. Therefore, the positions of the tuck-in head 3 and the cutter 6 on the side opposite to the weft-supply side are changed to positions corresponding to the change in the cloth T (weaving width).
  • the disposition of the tuck-in head 3 can be changed.
  • the disposition of the tuck-in head 3 can be changed without changing the disposition of the reverse driving section 12 connected to a side of the intermediate transmission shaft 11 opposite to, for example, the support mechanism 30 (driving-shaft-8 side). Therefore, according to the air tuck-in device 2, the disposition of the tuck-in head 3 can be easily changed.
  • the support mechanism 30 is formed so that the position of the first bracket 311 of the supporting section 31 with respect to the mounting section 32 can be adjusted in three directions, that is, the weaving-width direction, the front-rear direction, and the up-down direction.
  • the through holes formed in the base section 312a of the second bracket 312 are long holes that are long in the longitudinal direction of the base section 312a (the weaving-width direction in the installed state). Therefore, the position of the second bracket 312 with respect to the mounting section 32 can be adjusted in a range of the long holes (through holes).
  • the through holes in the third bracket 313 through which the aforementioned second screw members 41 are inserted are long holes that are long in the front-rear direction in the installed state. Further, the through holes in the third bracket 313 through which the aforementioned first screw members 40 are inserted are long holes that are long in the up-down direction in the installed state. Therefore, the position of the third bracket 313 with respect to the protruding portion 312b of the second bracket 312 can be changed in a range of the long holes (the through holes) through which the second screw members 41 are inserted. Further, the position of the first bracket 311 with respect to the third bracket 313 can be changed in a range of the long holes (the through holes) in the third bracket 313 through which the first screw members 40 are inserted.
  • the position of the first bracket 311 with respect to the mounting section 32 can be adjusted in the three directions. Therefore, in the installed state, the position of the tuck-in head 3 that is supported by the first bracket 311 via the supporting shaft 25 and the swinging arm 13 can be adjusted in the three directions.
  • the supporting shaft 25 is disposed above the cloth fell CF in the front-rear direction. That is, in the front-rear direction, the supporting shaft 25 is disposed in a range near the cloth fell CF, the range including a location directly above the cloth fell CF.
  • a swing radius of the tuck-in head 3 around the axis of the supporting shaft 25 as a swing center is a swing radius that does not allow the tuck-in head 3 to be greatly displaced in a radial direction at a swing angle based on a swing range such as that described above.
  • the tuck-in head 3 is supported by the swinging arm 13 so that, when, in the process of a reciprocating motion, the guide unit 3d has reached the position of the cloth fell CF, the extension direction of the slit 3a is substantially parallel to the warp line WL.
  • the slit 3a of the tuck-in head 3 is displaced in a substantially parallel state with respect to the warp line WL. That is, the path of the motion of the tuck-in head 3 during such a time is substantially parallel to the warp line WL.
  • the tuck-in head 3 receives the weft Y into the slit 3a with the extension direction of the slit 3a substantially parallel to the warp line WL, and the tuck-in head 3 reaches the first position with the substantially parallel state of the extension direction of the slit 3a with respect to the warp line WL being substantially kept.
  • the air tuck-in device 2 can properly perform the above-described tuck-in operation.
  • the link mechanism including the first connecting lever 141 and the second connecting lever 142 of the driving transmission section 14 and the swinging arm 13 is formed so that, as described above, the connection angle ⁇ is kept at substantially 90 degrees during the above-described reciprocation driving operation. Therefore, according to this configuration, since the motion of the intermediate transmission shaft 11 is more efficiently transmitted to the swinging arm 13, the desired reciprocating motion of the tuck-in head 3 can be realized by reciprocating rotation of the intermediate transmission shaft 11 with a smaller rotation amount.
  • the crank hub 162 has a split clamp structure, and is mounted on the driving shaft 8 so as to be incapable of rotating with respect to the driving shaft 8 by a split-clamp fixing operation. That is, in an arbitrary mounting phase, the clamp hub 162 can be mounted on the driving shaft 8.
  • the mounting phase of the clamp hub 162 With respect to the driving shaft 8, the position in the front-rear direction of the tuck-in head 3, which is reciprocatingly driven, with respect to the crank angle (the phase of the reciprocating motion of the tuck-in head 3) is changed.
  • the air tuck-in device 2 of the present embodiment is formed so that the phase of the reciprocating motion of the tuck-in head 3 can be changed. Therefore, even if an optimal timing of performing the tuck-in operation when, for example, the weaving condition is changed is changed, it is possible to easily deal with such a change.
  • the present invention is not limited to the above-described embodiment, and can be carried out even in modified modes as in (1) to (6) below.
  • the driving 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 that is formed so as to rotationally drive the driving shaft 8 is an electric motor of the loom that rotationally drives the loom main shaft MS.
  • the driving source that is formed so as to rotationally drive the driving shaft is not limited to such an electric motor, and may be a dedicated motor provided independently of the electric motor. In this case, the driving of the dedicated driving motor is controlled in synchronism with the electric motor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Claims (7)

  1. Luftdüsenwebmaschine (1), die eine Lufteinlegevorrichtung (2) enthält, wobei die Lufteinlegevorrichtung (2) in der Luftdüsenwebmaschine (1) vorgesehen ist und durch Luftstrahlen mit Einlegedüsen (3c) einen Einlegevorgang durchführt, wobei die Lufteinlegevorrichtung (2) umfasst:
    ein Paar Einlegeköpfe (3), die jeweils auf einer jeweiligen Schussfadenzuführseite und einer Seite gegenüber der Schussfadenzuführseite vorgesehen sind und die Einlegedüsen (3c) aufweisen,
    eine Antriebswelle (8), die kontinuierlich drehend in einer Richtung synchron mit einer Hauptwelle der Webmaschine (1) angetrieben wird, und
    ein hin- und hergehender Bewegungsmechanismus (7), der mindestens den Einlegekopf (3) unterstützt, der an der Seite gegenüber der Schussfadenzuführseite angeordnet ist, und der die Antriebswelle (8) als eine Antriebsquelle verwendet, und der den Einlegekopf (3) eine hin- und hergehende Bewegung zwischen einer ersten Position, die an einer Seite eines Stoffwarenrands gelegen ist, und einer zweiten Position, die weg von dem Stoffwarenrand in einer Vorne-Hinten-Richtung der Webmaschine (1) gelegen ist, ausführen lässt, wobei die erste Position eine Position ist, bei der die hin- und hergehende Bewegung bewirkt, dass der Einlegekopf (3) den Stoffwarenrand überlappt, wobei die zweite Position eine Position ist, bei der der Einlegekopf (3) weg von dem Stoffwarenrand an einer zu einer Seite eines Riets gegenüberliegenden Seite gelegen ist,
    wobei der hin- und hergehende Bewegungsmechanismus (7) eine Zwischengetriebewelle (11) umfasst, die drehbar von einem Rahmen der Webmaschine (1) gestützt wird und die sich in eine Webbreitenrichtung erstreckt, einen Rückwärtsantriebsabschnitt (12), der die Zwischengetriebewelle (11) und die Antriebswelle (8) miteinander verbindet und der hin- und herbewegend die Zwischengetriebewelle (11) rückwärts antreibt, einen Schwenkarm (13), der an einem Ende von einer Stützwelle (25), die über einer Kettfadenlinie vorgesehen ist, gestützt wird und der schwenkbar um eine Achse der Stützwelle (25) vorgesehen ist, und der am anderen Ende den Einlegekopf (3) unterstützt, und einen Antriebsgetriebeabschnitt (14), der den Schwenkarm (13) und die Zwischengetriebewelle (11) miteinander verbindet und der auf der Zwischengetriebewelle (11) angebracht ist, so dass eine Position des Antriebsgetriebeabschnitts (14) in der Webbreitenrichtung in Bezug zu der Zwischengetriebewelle (11) veränderbar ist.
  2. Luftdüsenwebmaschine (1) nach Anspruch 1, wobei in der Vorne-Hinten-Richtung die Stützwelle (25) in einem Bereich nahe des Stoffwarenrands angeordnet ist, wobei der Bereich eine Stelle direkt über dem Stoffwarenrand enthält.
  3. Luftdüsenwebmaschine (1) nach einem der Anspruche 1 oder 2, wobei der Antriebsgetriebeabschnitt (14) einen ersten Verbindungshebel (141) enthält, der an einem Ende der Zwischengetriebewelle (11) so montiert ist, dass er unfähig ist, sich relativ zu der Zwischengetriebewelle (11) zu drehen, und einen zweiten Verbindungshebel (142), der an einem Ende mit dem anderen Ende des ersten Verbindungshebels (141) verbunden ist, so dass er in Bezug auf das andere Ende des ersten Verbindungshebels (141) drehbar ist, und der an dem anderen Ende mit dem Schwenkarm (13) verbunden ist, so dass er in Bezug auf den Schwenkarm (13) drehbar ist.
  4. Luftdüsenwebmaschine (1) nach Anspruch 3, wobei ein Verbindungsabschnitt (CP), an dem der Schwenkarm (13) und der zweite Verbindungshebel (142) miteinander verbunden sind, in der longitudinalen Richtung näher zu einer Seite des anderen Endes des Schwenkarms (13) positioniert ist als ein Zwischenabschnitt (13c) des Schwenkarms (13) .
  5. Luftdüsenwebmaschine (1) nach einem der Ansprüche 3 oder 4, wobei eine Position des Verbindungsabschnitts (CP) und Längen von beiden Verbindungshebeln (141, 142) so festgelegt sind, dass ein Winkel, der von dem ersten Verbindungshebel(141) und dem zweiten Verbindungshebel(142) gebildet wird, im Wesentlichen 90 Grad ist, in einem Zustand, in welchem der Einlegekopf (3) an einer der ersten Position und der zweiten Position positioniert ist, und eine Position der Stützwelle (25) so festgelegt ist, dass der Winkel im Wesentlichen 90 Grad ist, selbst in einem Zustand, in welchem der Einlegekopf (3) an der anderen der ersten Position und der zweiten Position in Bezug auf die eine der ersten Position und der zweiten Position.
  6. Luftdüsenwebmaschine (1) nach einem der Ansprüche 1 bis 5, wobei der Rückwärtsantriebsabschnitt (12) ein Gelenkverbindungsmechanismus ist, der einen Kurbelmechanismus, der auf der Antriebswelle (8) montiert ist, enthält.
  7. Luftdüsenwebmaschine (1) nach Anspruch 6, wobei der Kurbelmechanismus (16) eine Kurbelnabe (162) enthält, die so auf der Antriebswelle (8) montiert ist, dass sie unfähig ist, sich relativ zu der Antriebswelle (8) zu drehen, und so ausgebildet ist, dass eine Montagephase der Kurbelnabe (162) in Bezug zu der Antriebswelle (8) veränderbar ist.
EP19205302.3A 2018-11-07 2019-10-25 Luftdüsenwebmaschine mit lufteinziehvorrichtung Active EP3650594B1 (de)

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JP2018209408A JP7140640B2 (ja) 2018-11-07 2018-11-07 空気噴射式織機におけるエアタックイン装置

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Publication number Priority date Publication date Assignee Title
IT1251849B (it) * 1991-09-23 1995-05-26 Somet Soc Mec Tessile Metodo per la formazione della cimossa rientrata in telai senza navetta ed in particolare in telai ad aria e dispositivo per realizzare tale metodo
JP3344714B2 (ja) * 1999-09-21 2002-11-18 津田駒工業株式会社 タックイン装置の緯糸保持装置
JP4132793B2 (ja) * 2001-11-22 2008-08-13 津田駒工業株式会社 織布のタックイン耳形成方法
JP4965352B2 (ja) * 2006-10-16 2012-07-04 津田駒工業株式会社 パイル織機のエアー式タックイン方法および装置
JP2010100974A (ja) * 2008-10-27 2010-05-06 Tsudakoma Corp 織機のキャッチコード開口装置
JP2010209497A (ja) * 2009-03-12 2010-09-24 Tsudakoma Corp 空気噴射式織機
JP5309003B2 (ja) * 2009-11-30 2013-10-09 津田駒工業株式会社 無杼織機におけるタックイン方法及び装置
IT201600122838A1 (it) * 2016-12-02 2018-06-02 Itema Spa Leverismo di comando per cimossatrice a testa di lavoro mobile per macchine tessili
CN206448004U (zh) * 2017-01-19 2017-08-29 青岛天一集团红旗纺织机械有限公司 一种筘座直连式气动光边装置

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EP3650594A1 (de) 2020-05-13
JP7140640B2 (ja) 2022-09-21
CN111155227A (zh) 2020-05-15
CN111155227B (zh) 2023-03-10

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