EP0893524A1 - Weft inserting apparatus for rapier loom - Google Patents
Weft inserting apparatus for rapier loom Download PDFInfo
- Publication number
- EP0893524A1 EP0893524A1 EP98112299A EP98112299A EP0893524A1 EP 0893524 A1 EP0893524 A1 EP 0893524A1 EP 98112299 A EP98112299 A EP 98112299A EP 98112299 A EP98112299 A EP 98112299A EP 0893524 A1 EP0893524 A1 EP 0893524A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weft
- wall
- inserting apparatus
- guide frame
- set forth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- 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
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
- D03D47/233—Carrying grippers
-
- 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
- D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
- D03D47/20—Constructional features of the thread-engaging device on the inserters
- D03D47/23—Thread grippers
-
- 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
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/271—Rapiers
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/24—Mechanisms for inserting shuttle in shed
- D03D49/50—Miscellaneous devices or arrangements concerning insertion of weft and not otherwise provided for
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
- D03J1/04—Auxiliary apparatus combined with or associated with looms for treating weft
Definitions
- the present invention relates generally to a weft inserting apparatus for a rapier loom. More particularly, the invention is concerned with a weft feeding rapier head of a weft inserting apparatus which can ensure a smooth yarn guiding action.
- a weft feeding head disclosed in Japanese Patent Laid-open No. 4-214439 (functionally corresponding to the weft feeding rapier head according to the present invention) is comprised of a base portion and a main body (functionally corresponding to a guide frame of the weft feeding rapier head according to the invention), wherein the main body includes a pair of side walls.
- a gripper for holding a weft is fixedly secured to the base portion in such disposition that the weft guided along upper edges of the paired side walls can be introduced into a gripping portion of the gripper.
- the gripper is constituted by a rigid clamp jaw equipped with a weft deflecting fin and a resilient tongue member, wherein the weft is held between the rigid clamp jaw and the resilient tongue member.
- the tip end portion of the resilient clamp jaw is configured so as to guide the weft to the aforementioned gripping portion.
- a weft guide (denoted by reference numeral 10 or 19) has to be indispensably provided in opposition to the rigid clamp jaw in order to realize the aimed operation or function.
- the rigid clamp jaw provided with the weft deflecting fin is formed separately from the main body mentioned above. Consequently, difficulty is encountered in shaping the main body such that the weft guiding action performed by the upper edge of one side wall can be smoothly turned over to the weft guiding action performed by the tip end portion of the rigid clamp jaw.
- the attempt for providing the weft guide in the side wall or a top wall member will encounter difficulty in properly shaping the edge of the side wall or the edge of the overhanging top wall, giving rise to a problem that weft breakage occurs due to excessive abrasion of the weft upon contacting with the warp and/or the loosened warp may find way to beneath the top wall, incurring ultimately breakage of the warp.
- the present invention is directed to a weft inserting apparatus for a rapier loom, in which a weft feeding rapier head and a weft receiving rapier head each provided with a weft gripping means are inserted into a shedding formed by warps along a sley or a guide member disposed in a width direction of a woven fabric for transferring the weft from the weft feeding rapier head to the weft receiving rapier head, and then the weft feeding rapier head and the weft receiving rapier head are retracted from the shedding, to thereby effectuate weft insertion.
- a weft feeding rapier head of the weft inserting apparatus which features that an outer wall of the weft feeding rapier head is constituted by a guide frame composed of a side wall located at the side of a reed, a bottom wall and a warp guiding top wall each extending from the side wall, and a vertically upstanding wall extending from the bottom wall and disposed at the side of a cloth fell with a predetermined distance from the side wall.
- a vertically suspended wall for guiding the weft is disposed between the side wall and the vertically upstanding wall, wherein the vertically suspended wall is connected to the top wall and extends vertically downward toward the bottom wall. Further, a gripping mechanism for gripping the weft is disposed between the vertically upstanding wall and the vertically suspended wall.
- a weft position regulating portion formed in a concave shape may be disposed above the bottom wall at the side of the reed.
- a weft guiding edge portion may be formed at a lower end of the vertically suspended wall.
- the weft guiding edge portion may be formed in a shape curved toward the reed from the lower end of the vertically suspended wall.
- the guide frame and the vertically upstanding wall may be formed separately from each other, while a mounting member extending toward the bottom wall may be formed in the vertically upstanding wall, wherein the guide frame and the vertically upstanding wall may be integrally combined with each other by securing the bottom wall and the mounting member to each other.
- the mounting member of the vertically upstanding wall may be disposed on an upper surface of the bottom wall of the guide frame and fixedly secured thereto.
- the mounting member of the vertically upstanding wall may be disposed on a lower surface of the bottom wall of the guide frame and fixedly secured thereto.
- a spacer may be interposed between the bottom wall of the guide frame and the mounting member of the vertically upstanding wall.
- a flat surface forming plate may be mounted on a lower surface of the mounting member of the vertically upstanding wall or alternatively on a lower surface of the bottom wall of the guide frame disposed in opposition to the guide member or the sley disposed in the width direction of the woven fabric.
- the guide frame composed of at least the side wall, the bottom wall and the top wall may be formed by bending and/or folding a single metal sheet.
- the guide frame and the vertically suspended wall may be formed by bending and/or folding a single metal sheet.
- the guide frame, the vertically suspended wall and the weft guiding edge portion provided at the lower end of the vertically suspended wall may be formed by bending and/or folding a single metal sheet.
- the guide frame, the vertically suspended wall and the vertically upstanding wall may be formed by bending and/or folding a single metal sheet.
- the guide frame, the vertically suspended wall, the weft guiding edge portion provided at the lower end of the vertically suspended wall and the vertically upstanding wall may be formed through a precision steel casting process or alternatively by resorting to a powder-metallurgical process.
- the guide frame, the vertically suspended wall and the weft guiding edge portion provided at the lower end of the vertically suspended wall may be formed through a precision steel casting process or alternatively a powder-metallurgical process.
- a mount base for the gripping mechanism may be formed integrally with the vertically upstanding wall or the mounting member of the vertically upstanding wall or across the vertically upstanding wall and the mounting member.
- a portion of the top wall may be formed as a reinforcing protrusion.
- a rapier band 11 is wrapped around a wheel (not shown), and a weft feeding rapier head generally denoted by reference numeral 12 is secured to a tip end portion of the rapier band 11 by means of screws so as to reciprocatively move into and out from a shed formed by warps T under reciprocative rotation of the wheel.
- Figs. 2(a) and 2(b) in which Fig. 2(a) is a top plan view showing the weft feeding rapier head 12 and Fig. 2(b) is a side elevational view of the same.
- the weft feeding rapier head 12 is generally comprised of a guide frame 13 and a gripping mechanism 14 which is secured to the guide frame 13.
- Figs. 3(a) and 3(b) in which Fig. 3(a) is a front end view of the weft feeding rapier head 12 and Fig. 3(b) is a sectional view of the same taken along a line A-A shown in Fig.
- the gripping mechanism 14 includes a stationary gripping member 141, a movable gripping member 142 which is resiliently deformable or flexible and a leaf spring 143 for resiliently urging the movable gripping member 142 onto the stationary gripping member 141.
- the stationary gripping member 141, the movable gripping member 142 and the leaf spring 143 are fixedly stacked together in this order as viewed from the top, whereby a unitary assembly is formed, which is secured to the guide frame 13 by the screws.
- the guide frame 13 is constituted by a bottom wall 15, a vertically upstanding wall 16 disposed erectly at one lateral side of the bottom wall 15 (i.e., at the side facing a cloth fell of a woven fabric), a sidewall 17 disposed erectly at the other side of the bottom wall 15 (i.e., at the side of a reed 20 on a sley 10), a top wall 18 extending continuously from the side wall 17 and disposed in opposition to the side wall 17 and a vertically suspended wall 19 extending vertically downwardly from the top wall 18.
- Fig. 3(c) which shows the weft feeding rapier head in a sectional view taken along a line B-B in Fig.
- the rapier band 11 is secured to a base portion of the bottom wall 15 by means of screws.
- a mount base 151 mounted fixedly on the upper surface of the bottom wall 15 is a mount base 151 on which a gripping mechanism 14 is secured by means of screws.
- a flat surface forming plate 21 is secured to the lower surface of the bottom wall 15.
- the lower surface of the flat surface forming plate 21 lies flush with that of the rapier band 11, whereby there can be ensured smoothness in guiding a warp on and along the lower surface of the bottom wall 15 (see Fig. 3(a)).
- the flat surface forming plate 21 can be made of synthetic resin materials or metal materials.
- the vertically upstanding wall 16 has an upper edge which is formed continuously by a weft guiding edge portion 161 extending slantly upwardly from the leading end portion of the vertically upstanding wall 16, a weft guiding edge portion 162 extending obliquely downward from the weft guiding edge portion 161 and a weft guiding edge portion 163 extending substantially horizontal.
- the upwardly sloped weft guiding edge portion 161 is also destined to serve as a weft guiding edge portion.
- a weft guiding edge portion 191 is formed at the lower end of the vertically suspended wall 19. More specifically, the weft guiding edge portion 191 is bent or curved toward the side wall 17 from the lower edge of the vertically suspended wall 19. With the arrangement described above, the weft Y can be guided into a gripping portion defined between the stationary gripping member 141 and the movable gripping member 142 through cooperation of the weft guiding edge portions 161, 162, 163 and 191.
- warp guiding edge portions 171 and 172 Formed in upper and lower edge portions of the side wall 17 at locations closer to the leading end thereof are warp guiding edge portions 171 and 172 which are gradually distanced from each other in the direction as viewed from the tip end of the side wall 17.
- the side wall 17 serves as a guide for grouping the warps T into upper and lower warp layers (T) along the warp guiding edge portions 171 and 172 upon operation for forming the shedding.
- the warp guiding action of the warp guiding edge portion 172 is succeeded by a front edge portion 152 of the bottom wall 15 and the bottom surface of the flat surface forming plate 21.
- a slanted warp guiding surface 181 Formed in a tip end portion of the top wall 18 are a slanted warp guiding surface 181 and a forefront edge 184.
- the warp guiding action performed by the warp guiding edge portion 171 is smoothly transferred to the warp guiding action of the warp guiding surface 181.
- a concave-shaped weft guiding edge portion 173 which cooperates with the weft guiding edge portions 161 and 191 to guide the weft Y into the gripping portion of the gripping mechanism 14.
- a weft position regulating recess 183 which serves as a means for regulating the position of the weft. The weft Y which is in the state gripped by the gripping mechanism 14 can thus be brought into contact with the weft position regulating recess 183. In this way, the path of the weft Y which is in the state held by the gripping mechanism 14 is regulated by the weft position regulating recess 183.
- the guide frame 13 is formed by bending correspondingly a single metal sheet (i.e., one and the same metal sheet) so that there are formed in continuation to one another the weft guiding edge portion 161 of the vertically upstanding wall 16, the front edge portion 152 of the bottom wall 15, the warp guiding edge portions 172 and 171 of the side wall 17, the weft guiding edge portion 173 of the side wall 17, the front edge portion 182 of the top wall 18 and the weft guiding edge portion 191 of the vertically suspended wall 19.
- the warp T is guided upwardly at a location of the forefront edge 184, being regulated by the weft guiding edge portion 161 and the warp guiding edge portion 171, to reach the warp guiding surface 181.
- the weft Y is guided downwardly at a location of the forefront edge 184 under regulation by the weft guiding edge portion 161 and the weft guiding edge portion 173 to reach the weft guiding edge portion 191.
- the forefront edge 184 plays a role as a branching point for setting separately the directions in which the warps T and the weft Y are to be guided, respectively.
- the weft feeding rapier head 12 which is gripping and carrying the weft Y encounters a receiving rapier head (not shown) substantially at a central position as viewed in the width direction of the woven fabric, whereby the weft Y gripped by the weft feeding rapier head 12 is transferred to the weft receiving rapier head arrived at a transfer position between the side wall 17 and the vertically suspended wall 19.
- a vertically suspended wall 25 and a top wall 26 are formed integrally with each other as a unitary structure separately from the other guide frame forming portions.
- the vertically suspended wall 25 and the top wall 26 are formed by bending correspondingly a metal sheet, wherein the top wall 26 is secured to a mounting member 185 formed integrally with the side wall 17.
- the top wall 26 and the vertically suspended wall 25 may also be formed through a precision steel casting process typified by a lost-wax process, a sintering process, an injection molding process, a powder-metallurgical process such as an injection molding/sintering process or the like.
- a vertically upstanding wall 28 is formed separately by bending a metal sheet.
- a spacer 29 Secured to the lower surface of the bottom wall 15 is a spacer 29 having a bottom surface on which the vertically upstanding wall 28 is secured by means of a mounting member 281.
- the metal sheet forming the vertically upstanding wall 28 has a same thickness as that of the metal sheet which forms the bottom wall 15.
- the rapier band 11 secured to the lower surface of the bottom wall 15 has a thickness slightly greater than that of the metal sheet mentioned above.
- the spacer 29 is imparted with a thickness which is dimensioned to be equal to a difference in thickness between the bottom wall 15 and the mounting member 281.
- the lower surface of the mounting member 281 can be flush with the lower surface of the rapier band 11.
- provision of the spacer 29 is required when the overall thickness of the bottom wall 15 and the mounting member 281 is smaller than that of the rapier band 11.
- a vertically upstanding wall 22 is formed separately through a precision steel casting process typified by a lost-wax process, a powder-metallurgical process such as a sintering process, an injection molding process, an injection molding/sintering process or the like.
- the vertically upstanding wall 22 is secured to the upper surface of the bottom wall 15 by means of a mounting member 221.
- a mount base 222 Formed integrally on the upper surface of the mounting member 221 is a mount base 222 on which the gripping mechanism 14 is mounted.
- a vertically upstanding wall 31 is formed separately through a precision steel casting process typified by a lost-wax process, a powder-metallurgical process such as a sintering process, an injection molding process, an injection molding/sintering process or the like.
- a mounting member 311 of the vertically upstanding wall 31 is secured on the lower surface of the bottom wall 15.
- the mounting member 311 has a same thickness as that of the rapier band 11 which is thicker than the vertically upstanding wall 31, wherein the lower surface of the mounting member 311 lies flush with the lower surface of the rapier band 11.
- Formed integrally on the upper surface of the mounting member 311 of the vertically upstanding wall 31 is a mount base 151 on which the gripping mechanism 14 is mounted.
- a protruding portion 186 is formed integrally with the top wall 18 so that the former projects upwardly. More specifically, the protruding portion 186 extends in the longitudinal direction of the weft feeding rapier head 12 so as to cover the weft position regulating recess 183 as viewed in the width direction of the rapier band 11.
- the front end portion of the top wall 18 is likely to be deformed because the weft position regulating recess 183 is formed in the top wall 18.
- the protruding portion 186 is provided as a reinforcing means for preventing such deformation of the top wall 18.
- the protruding portion 186 can be formed by resorting to a drawing process when the top wall 18 is formed by bending a metal sheet. On the other hand, when the top wall 18 is formed through a precision steel casting or a powder-metallurgical process, the protruding portion 186 can be easily formed integrally with the top wall 18 in a unitary cast structure.
- a protruding portion 187 is formed integrally with the top wall 18 so that the former projects downwardly. More specifically, the protruding portion 187 extends in the longitudinal direction of the weft feeding rapier head 12 so as to cover the weft position regulating recess 183 as viewed in the width direction of the rapier band 11.
- the protruding portion 187 is provided as a reinforcing portion for preventing such deformation of the top wall 18, similarly to the protruding portion 186 provided in the rapier head according to the sixth embodiment of the invention.
- the protruding portion 187 can be formed by resorting to a drawing process when the top wall 18 is formed by bending a metal sheet. On the other hand, when the top wall 18 is formed through a precision steel casting or a powder-metallurgical process, the protruding portion 187 can easily be formed integrally with the top wall 18 in a unitary cast structure.
- the warp guiding edge portion formed in the side wall of the guide frame and the weft guiding edge portion formed in the vertically sustained wall are connected together by way of the front edge portion of the top wall.
- the weft guiding edge portion is implemented integrally with lower edge of the vertically suspended wall connected to the top wall of the rapier head, there arises no need for providing the yarn deflecting fin in association with the weft gripping mechanism, differing from the conventional rapier head.
- the gripping mechanism of a simple geometry known per se can be used intactly.
- the positional relationship among the forefront edge, the weft guiding edge portion and the warp guiding edge portion can remain unaltered, the mounting position of the gripping mechanism can be freely changed. In other words, the gripping mechanism can be installed at a position where the weft can be gripped most stably.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
A weft feeding rapier head for a weft inserting apparatus
of a rapier loom has a warp guiding portion which can be easily
shaped so as to ensure a smooth warp guiding action. The weft
feeding rapier head (12) is comprised of a guide frame (13)
and a gripping mechanism (14) fixedly secured to the guide
frame (13). The guide frame (13) is constituted by a bottom
wall (15), a vertically upstanding wall (16) disposed erectly
at one lateral side of the bottom wall (15), a side wall (17)
disposed erectly at the other side of the bottom wall (15),
a top wall (18) extending continuously from the side wall (17)
and disposed in opposition to the bottom wall (15) and a
vertically suspended wall (19) extending vertically downward
from the top wall (18). A warp guiding edge portion (171)
formed in the side wall (17) and a weft guiding edge portion
(191) formed in the vertically suspended wall (19) are
connected continuously to each other by way of a front end
edge (182) and a weft position regulating recess (183) formed
in the top wall (18).
Description
The present invention relates generally to a weft
inserting apparatus for a rapier loom. More particularly,
the invention is concerned with a weft feeding rapier head
of a weft inserting apparatus which can ensure a smooth yarn
guiding action.
A weft feeding head disclosed in Japanese Patent
Laid-open No. 4-214439 (functionally corresponding to the
weft feeding rapier head according to the present invention)
is comprised of a base portion and a main body (functionally
corresponding to a guide frame of the weft feeding rapier head
according to the invention), wherein the main body includes
a pair of side walls. A gripper for holding a weft is fixedly
secured to the base portion in such disposition that the weft
guided along upper edges of the paired side walls can be
introduced into a gripping portion of the gripper. To this
end, the gripper is constituted by a rigid clamp jaw equipped
with a weft deflecting fin and a resilient tongue member,
wherein the weft is held between the rigid clamp jaw and the
resilient tongue member. The tip end portion of the resilient
clamp jaw is configured so as to guide the weft to the
aforementioned gripping portion. In the head structure
disclosed in the Publication mentioned above, a weft guide
(denoted by reference numeral 10 or 19) has to be indispensably
provided in opposition to the rigid clamp jaw in order to
realize the aimed operation or function.
It is noted that in the case of the head structure
disclosed in the above-mentioned publication, the rigid clamp
jaw provided with the weft deflecting fin is formed separately
from the main body mentioned above. Consequently, difficulty
is encountered in shaping the main body such that the weft
guiding action performed by the upper edge of one side wall
can be smoothly turned over to the weft guiding action
performed by the tip end portion of the rigid clamp jaw. On
the other hand, the attempt for providing the weft guide in
the side wall or a top wall member (overhanging top wall) will
encounter difficulty in properly shaping the edge of the side
wall or the edge of the overhanging top wall, giving rise to
a problem that weft breakage occurs due to excessive abrasion
of the weft upon contacting with the warp and/or the loosened
warp may find way to beneath the top wall, incurring ultimately
breakage of the warp.
In the light of the state of the art described above,
it is an object of the present invention to provide a weft
feeding rapier head for a weft inserting apparatus of a rapier
loom, which head is equipped with a warp guiding portion which
can be easily shaped so as to ensure a smooth warp guiding
action.
The present invention is directed to a weft inserting
apparatus for a rapier loom, in which a weft feeding rapier
head and a weft receiving rapier head each provided with a
weft gripping means are inserted into a shedding formed by
warps along a sley or a guide member disposed in a width
direction of a woven fabric for transferring the weft from
the weft feeding rapier head to the weft receiving rapier head,
and then the weft feeding rapier head and the weft receiving
rapier head are retracted from the shedding, to thereby
effectuate weft insertion.
In view of the above and other objects which will become
apparent as the description proceeds, there is provided
according to a general aspect of the present invention a weft
feeding rapier head of the weft inserting apparatus which
features that an outer wall of the weft feeding rapier head
is constituted by a guide frame composed of a side wall located
at the side of a reed, a bottom wall and a warp guiding top
wall each extending from the side wall, and a vertically
upstanding wall extending from the bottom wall and disposed
at the side of a cloth fell with a predetermined distance from
the side wall. A vertically suspended wall for guiding the
weft is disposed between the side wall and the vertically
upstanding wall, wherein the vertically suspended wall is
connected to the top wall and extends vertically downward
toward the bottom wall. Further, a gripping mechanism for
gripping the weft is disposed between the vertically
upstanding wall and the vertically suspended wall.
In a preferred mode for carrying out the invention, a
weft position regulating portion formed in a concave shape
may be disposed above the bottom wall at the side of the reed.
In another preferred mode for carrying out the invention,
there may be formed in a front end portion of the top wall
which is located at a position near the cloth fell a forefront
edge defining a branching point for allowing the warp to be
guided upwardly while allowing the weft to be guided
downwardly.
In yet another preferred mode for carrying out the
invention, a weft guiding edge portion may be formed at a lower
end of the vertically suspended wall.
In still another preferred mode for carrying out the
invention, the weft guiding edge portion may be formed in a
shape curved toward the reed from the lower end of the
vertically suspended wall.
In a further preferred mode for carrying out the
invention, the guide frame and the vertically upstanding wall
may be formed separately from each other, while a mounting
member extending toward the bottom wall may be formed in the
vertically upstanding wall, wherein the guide frame and the
vertically upstanding wall may be integrally combined with
each other by securing the bottom wall and the mounting member
to each other.
In a yet further preferred mode for carrying out the
invention, the mounting member of the vertically upstanding
wall may be disposed on an upper surface of the bottom wall
of the guide frame and fixedly secured thereto.
In a still further preferred mode for carrying out the
invention, the mounting member of the vertically upstanding
wall may be disposed on a lower surface of the bottom wall
of the guide frame and fixedly secured thereto.
In another preferred mode for carrying out the invention,
a spacer may be interposed between the bottom wall of the guide
frame and the mounting member of the vertically upstanding
wall.
In yet another preferred mode for carrying out the
invention, a flat surface forming plate may be mounted on a
lower surface of the mounting member of the vertically
upstanding wall or alternatively on a lower surface of the
bottom wall of the guide frame disposed in opposition to the
guide member or the sley disposed in the width direction of
the woven fabric.
In still another preferred mode for carrying out the
invention, the guide frame composed of at least the side wall,
the bottom wall and the top wall may be formed by bending and/or
folding a single metal sheet.
In a further preferred mode for carrying out the
invention, the guide frame and the vertically suspended wall
may be formed by bending and/or folding a single metal sheet.
In a yet further preferred mode for carrying out the
invention, the guide frame, the vertically suspended wall and
the weft guiding edge portion provided at the lower end of
the vertically suspended wall may be formed by bending and/or
folding a single metal sheet.
In a still further preferred mode for carrying out the
invention, the guide frame, the vertically suspended wall and
the vertically upstanding wall may be formed by bending and/or
folding a single metal sheet.
In another preferred mode for carrying out the invention,
the guide frame, the vertically suspended wall, the weft
guiding edge portion provided at the lower end of the
vertically suspended wall and the vertically upstanding wall
may be formed through a precision steel casting process or
alternatively by resorting to a powder-metallurgical
process.
In yet another preferred mode for carrying out the
invention, there may be formed by bending and/or folding a
single metal sheet the guide frame, the vertically suspended
wall and the weft guiding edge portion provided at the lower
end of the vertically suspended wall, while the vertically
upstanding wall may be formed through a precision steel
casting process or alternatively a powder-metallurgical
process.
In still another preferred mode for carrying out the
invention, a mount base for the gripping mechanism may be
formed integrally with the vertically upstanding wall or the
mounting member of the vertically upstanding wall or across
the vertically upstanding wall and the mounting member.
In a further preferred mode for carrying out the
invention, a portion of the top wall may be formed as a
reinforcing protrusion.
The above and other objects, features and attendant
advantages of the present invention will be more easily
understood by reading the following description of the
preferred embodiments thereof, only by way of example, in
conjunction with the accompanying drawings, being
appreciated that many modifications and variations of the
present invention are possible in the light of the techniques
disclosed herein.
In the course of the description which follows,
reference is made to the drawings, in which:
The present invention will be described in detail in
conjunction with what is presently considered as preferred
or typical embodiments thereof by reference to the drawings.
In the following description, like reference characters
designate like or corresponding parts throughout the several
views. Also in the following description, it is to be
understood that such terms as "top", "bottom", "vertically",
"horizontally", "upper", "lower" and the like are words of
convenience and are not to be construed as limiting terms.
Now, referring to Figs. 1 to 3, description will be made
of a weft inserting apparatus for a rapier loom according to
a first embodiment of the present invention.
Referring to Fig. 1, a rapier band 11 is wrapped around
a wheel (not shown), and a weft feeding rapier head generally
denoted by reference numeral 12 is secured to a tip end portion
of the rapier band 11 by means of screws so as to
reciprocatively move into and out from a shed formed by warps
T under reciprocative rotation of the wheel.
Reference is made to Figs. 2(a) and 2(b), in which Fig.
2(a) is a top plan view showing the weft feeding rapier head
12 and Fig. 2(b) is a side elevational view of the same. As
can be seen in these figures, the weft feeding rapier head
12 is generally comprised of a guide frame 13 and a gripping
mechanism 14 which is secured to the guide frame 13. Further,
referring to Figs. 3(a) and 3(b), in which Fig. 3(a) is a front
end view of the weft feeding rapier head 12 and Fig. 3(b) is
a sectional view of the same taken along a line A-A shown in
Fig. 2(b), the gripping mechanism 14 includes a stationary
gripping member 141, a movable gripping member 142 which is
resiliently deformable or flexible and a leaf spring 143 for
resiliently urging the movable gripping member 142 onto the
stationary gripping member 141. The stationary gripping
member 141, the movable gripping member 142 and the leaf spring
143 are fixedly stacked together in this order as viewed from
the top, whereby a unitary assembly is formed, which is secured
to the guide frame 13 by the screws.
The guide frame 13 is constituted by a bottom wall 15,
a vertically upstanding wall 16 disposed erectly at one
lateral side of the bottom wall 15 (i.e., at the side facing
a cloth fell of a woven fabric), a sidewall 17 disposed erectly
at the other side of the bottom wall 15 (i.e., at the side
of a reed 20 on a sley 10), a top wall 18 extending continuously
from the side wall 17 and disposed in opposition to the side
wall 17 and a vertically suspended wall 19 extending
vertically downwardly from the top wall 18. As can be seen
in Fig. 3(c) which shows the weft feeding rapier head in a
sectional view taken along a line B-B in Fig. 2(b), the rapier
band 11 is secured to a base portion of the bottom wall 15
by means of screws. Mounted fixedly on the upper surface of
the bottom wall 15 is a mount base 151 on which a gripping
mechanism 14 is secured by means of screws. A flat surface
forming plate 21 is secured to the lower surface of the bottom
wall 15. In this conjunction, it is to be noted that the lower
surface of the flat surface forming plate 21 lies flush with
that of the rapier band 11, whereby there can be ensured
smoothness in guiding a warp on and along the lower surface
of the bottom wall 15 (see Fig. 3(a)). Moreover, the flat
surface forming plate 21 can be made of synthetic resin
materials or metal materials.
The vertically upstanding wall 16 has an upper edge which
is formed continuously by a weft guiding edge portion 161
extending slantly upwardly from the leading end portion of
the vertically upstanding wall 16, a weft guiding edge portion
162 extending obliquely downward from the weft guiding edge
portion 161 and a weft guiding edge portion 163 extending
substantially horizontal. The upwardly sloped weft guiding
edge portion 161 is also destined to serve as a weft guiding
edge portion. On the other hand, a weft guiding edge portion
191 is formed at the lower end of the vertically suspended
wall 19. More specifically, the weft guiding edge portion
191 is bent or curved toward the side wall 17 from the lower
edge of the vertically suspended wall 19. With the
arrangement described above, the weft Y can be guided into
a gripping portion defined between the stationary gripping
member 141 and the movable gripping member 142 through
cooperation of the weft guiding edge portions 161, 162, 163
and 191.
Formed in upper and lower edge portions of the side wall
17 at locations closer to the leading end thereof are warp
guiding edge portions 171 and 172 which are gradually
distanced from each other in the direction as viewed from the
tip end of the side wall 17. The side wall 17 serves as a
guide for grouping the warps T into upper and lower warp layers
(T) along the warp guiding edge portions 171 and 172 upon
operation for forming the shedding. The warp guiding action
of the warp guiding edge portion 172 is succeeded by a front
edge portion 152 of the bottom wall 15 and the bottom surface
of the flat surface forming plate 21.
Formed in a tip end portion of the top wall 18 are a
slanted warp guiding surface 181 and a forefront edge 184.
The warp guiding action performed by the warp guiding edge
portion 171 is smoothly transferred to the warp guiding action
of the warp guiding surface 181.
Formed in the upper edge of the side wall 17 in succession
to the warp guiding edge portion 171 is a concave-shaped weft
guiding edge portion 173 which cooperates with the weft
guiding edge portions 161 and 191 to guide the weft Y into
the gripping portion of the gripping mechanism 14. Further,
formed in a front edge portion 182 of the top wall 18 is a
weft position regulating recess 183 which serves as a means
for regulating the position of the weft. The weft Y which
is in the state gripped by the gripping mechanism 14 can thus
be brought into contact with the weft position regulating
recess 183. In this way, the path of the weft Y which is in
the state held by the gripping mechanism 14 is regulated by
the weft position regulating recess 183.
The guide frame 13 is formed by bending correspondingly
a single metal sheet (i.e., one and the same metal sheet) so
that there are formed in continuation to one another the weft
guiding edge portion 161 of the vertically upstanding wall
16, the front edge portion 152 of the bottom wall 15, the warp
guiding edge portions 172 and 171 of the side wall 17, the
weft guiding edge portion 173 of the side wall 17, the front
edge portion 182 of the top wall 18 and the weft guiding edge
portion 191 of the vertically suspended wall 19.
Thus, the warp T is guided upwardly at a location of
the forefront edge 184, being regulated by the weft guiding
edge portion 161 and the warp guiding edge portion 171, to
reach the warp guiding surface 181. On the other hand, the
weft Y is guided downwardly at a location of the forefront
edge 184 under regulation by the weft guiding edge portion
161 and the weft guiding edge portion 173 to reach the weft
guiding edge portion 191. In this manner, the forefront edge
184 plays a role as a branching point for setting separately
the directions in which the warps T and the weft Y are to be
guided, respectively.
The weft feeding rapier head 12 which is gripping and
carrying the weft Y encounters a receiving rapier head (not
shown) substantially at a central position as viewed in the
width direction of the woven fabric, whereby the weft Y gripped
by the weft feeding rapier head 12 is transferred to the weft
receiving rapier head arrived at a transfer position between
the side wall 17 and the vertically suspended wall 19.
With the structure of the weft feeding rapier head for
the weft inserting apparatus of the rapier loom according to
the first embodiment of the invention described above, there
can be obtained advantageous effects mentioned below.
Next, description will turn to a second embodiment of
the present invention by reference to Figs. 4(a) and 4(b),
in which components or parts same as or equivalent to those
mentioned hereinbefore in conjunction with the first
embodiment are denoted by like reference numerals, and
repeated description thereof is omitted.
In a guide frame 24 of the weft feeding rapier head
according to this embodiment, a vertically suspended wall 25
and a top wall 26 are formed integrally with each other as
a unitary structure separately from the other guide frame
forming portions. The vertically suspended wall 25 and the
top wall 26 are formed by bending correspondingly a metal sheet,
wherein the top wall 26 is secured to a mounting member 185
formed integrally with the side wall 17. Parenthetically,
the top wall 26 and the vertically suspended wall 25 may also
be formed through a precision steel casting process typified
by a lost-wax process, a sintering process, an injection
molding process, a powder-metallurgical process such as an
injection molding/sintering process or the like.
With the structure of the weft feeding rapier head
according to the second embodiment of the invention described
above, there can be obtained advantageous effects mentioned
below.
Next, description will be directed to a third embodiment
of the present invention by reference to Figs. 5(a) to 5(c),
in which components or parts same as or equivalent to those
mentioned hereinbefore in conjunction with the first
embodiment are denoted by like reference numerals.
In a guide frame 27 of the weft feeding rapier head
according to this embodiment, a vertically upstanding wall
28 is formed separately by bending a metal sheet. Secured
to the lower surface of the bottom wall 15 is a spacer 29 having
a bottom surface on which the vertically upstanding wall 28
is secured by means of a mounting member 281. The metal sheet
forming the vertically upstanding wall 28 has a same thickness
as that of the metal sheet which forms the bottom wall 15.
By contrast, the rapier band 11 secured to the lower surface
of the bottom wall 15 has a thickness slightly greater than
that of the metal sheet mentioned above. Under the
circumstances, the spacer 29 is imparted with a thickness
which is dimensioned to be equal to a difference in thickness
between the bottom wall 15 and the mounting member 281. Thus,
the lower surface of the mounting member 281 can be flush with
the lower surface of the rapier band 11. Parenthetically,
it should be mentioned that provision of the spacer 29 is
required when the overall thickness of the bottom wall 15 and
the mounting member 281 is smaller than that of the rapier
band 11.
With the structure of the weft feeding rapier head
according to the third embodiment described above, there can
be achieved the following advantageous effects.
Next, description will turn to a fourth embodiment of
this invention by reference to Figs. 6(a) to 6(d), in which
components or parts same as or equivalent to those mentioned
hereinbefore in conjunction with the first embodiment are
denoted by like reference numerals.
In a guide frame 23 of the weft feeding rapier head
according to this embodiment, a vertically upstanding wall
22 is formed separately through a precision steel casting
process typified by a lost-wax process, a powder-metallurgical
process such as a sintering process, an
injection molding process, an injection molding/sintering
process or the like. The vertically upstanding wall 22 is
secured to the upper surface of the bottom wall 15 by means
of a mounting member 221. Formed integrally on the upper
surface of the mounting member 221 is a mount base 222 on which
the gripping mechanism 14 is mounted.
With the structure of the weft feeding rapier head
according to the fourth embodiment described above, there can
be obtained advantageous effects mentioned below.
Next, description will turn to a fifth embodiment of
the present invention by reference to Figs. 7(a) and 7(b),
in which components or parts same as or equivalent to those
mentioned hereinbefore in conjunction with the third
embodiment are denoted by like reference numerals.
In a guide frame 30 of the weft feeding rapier head
according to this embodiment, a vertically upstanding wall
31 is formed separately through a precision steel casting
process typified by a lost-wax process, a powder-metallurgical
process such as a sintering process, an
injection molding process, an injection molding/sintering
process or the like. A mounting member 311 of the vertically
upstanding wall 31 is secured on the lower surface of the
bottom wall 15. The mounting member 311 has a same thickness
as that of the rapier band 11 which is thicker than the
vertically upstanding wall 31, wherein the lower surface of
the mounting member 311 lies flush with the lower surface of
the rapier band 11. Formed integrally on the upper surface
of the mounting member 311 of the vertically upstanding wall
31 is a mount base 151 on which the gripping mechanism 14 is
mounted.
With the structure of the weft feeding rapier head
according to the fifth embodiment described above, there can
be achieved the advantageous effects mentioned below.
Next, description will turn to a sixth embodiment of
the present invention by reference to Figs. 8, 9(a) and 9(b)
in which components or parts same as or equivalent to those
mentioned hereinbefore in conjunction with the first
embodiment are denoted by like reference numerals.
In the weft feeding rapier head according to this
embodiment, a protruding portion 186 is formed integrally
with the top wall 18 so that the former projects upwardly.
More specifically, the protruding portion 186 extends in the
longitudinal direction of the weft feeding rapier head 12 so
as to cover the weft position regulating recess 183 as viewed
in the width direction of the rapier band 11. The front end
portion of the top wall 18 is likely to be deformed because
the weft position regulating recess 183 is formed in the top
wall 18. When the front end portion of the top wall 18 is
flexibly deformed, the vertical position of the forefront
edge 184 will change, giving rise to such possibility that
the warps and the weft can not be assorted. The protruding
portion 186 is provided as a reinforcing means for preventing
such deformation of the top wall 18.
The protruding portion 186 can be formed by resorting
to a drawing process when the top wall 18 is formed by bending
a metal sheet. On the other hand, when the top wall 18 is
formed through a precision steel casting or a powder-metallurgical
process, the protruding portion 186 can be
easily formed integrally with the top wall 18 in a unitary
cast structure.
Next, description will turn to a seventh embodiment of
the present invention by reference to Figs. 10(a) and 10(b)
in which components or parts same as or equivalent to those
mentioned hereinbefore in conjunction with the sixth
embodiment are denoted by like reference numerals.
In the weft feeding rapier head according to this
embodiment, a protruding portion 187 is formed integrally
with the top wall 18 so that the former projects downwardly.
More specifically, the protruding portion 187 extends in the
longitudinal direction of the weft feeding rapier head 12 so
as to cover the weft position regulating recess 183 as viewed
in the width direction of the rapier band 11. The protruding
portion 187 is provided as a reinforcing portion for
preventing such deformation of the top wall 18, similarly to
the protruding portion 186 provided in the rapier head
according to the sixth embodiment of the invention.
The protruding portion 187 can be formed by resorting
to a drawing process when the top wall 18 is formed by bending
a metal sheet. On the other hand, when the top wall 18 is
formed through a precision steel casting or a powder-metallurgical
process, the protruding portion 187 can easily
be formed integrally with the top wall 18 in a unitary cast
structure.
As is apparent from the foregoing description, in the
weft feeding rapier head according to this invention, the warp
guiding edge portion formed in the side wall of the guide frame
and the weft guiding edge portion formed in the vertically
sustained wall are connected together by way of the front edge
portion of the top wall. Thus, a smooth warp guiding action
can be ensured, whereby the warp is positively protected
against breakage, to a great advantage.
Furthermore, because the weft guiding edge portion is
implemented integrally with lower edge of the vertically
suspended wall connected to the top wall of the rapier head,
there arises no need for providing the yarn deflecting fin
in association with the weft gripping mechanism, differing
from the conventional rapier head. Thus, the gripping
mechanism of a simple geometry known per se can be used
intactly. Furthermore, because the positional relationship
among the forefront edge, the weft guiding edge portion and
the warp guiding edge portion can remain unaltered, the
mounting position of the gripping mechanism can be freely
changed. In other words, the gripping mechanism can be
installed at a position where the weft can be gripped most
stably.
Claims (19)
- A weft inserting apparatus for a rapier loom, in which a weft feeding rapier head (12) and a weft receiving rapier head each provided with weft gripping means are inserted into a shedding defined by warps along a sley (10) or a guide member disposed in a width direction of a woven fabric, a weft (Y) is transferred from said weft feeding rapier head (12) to said weft receiving rapier head and then said weft feeding rapier head (12) and said weft receiving rapier head are retracted from said shedding, to thereby effectuate weft insertion, characterized in that:an outer wall of said weft feeding rapier head (12) is constituted by a guide frame (13) composed of a side wall (17) located at the side of a reed (20), a bottom wall (15) and a warp guiding top wall (18) each extending from said side wall (17), and a vertically upstanding wall (16) extending from said bottom wall (15) and disposed at the side of a cloth fell with a predetermined distance from said side wall (17),a vertically suspended wall (19) for guiding said weft (Y) is disposed between said sidewall (17) and said vertically upstanding wall (16), said vertically suspended wall (19) being connected to said top wall (18) and extends vertically downward toward said bottom wall (15); anda gripping mechanism (14) for gripping said weft (Y) is disposed between said vertically upstanding wall (16) and said vertically suspended wall (19).
- A weft inserting apparatus for a rapier loom as set forth in claim 1,
characterized in that a weft position regulating portion (183) formed in a concave shape is disposed above said bottom wall (15) at the side of said reed (20). - A weft inserting apparatus for a rapier loom as set forth in claim 1 or 2,
characterized in that a forefront edge (184) defining a branching point for allowing said warp (T) to be guided upwardly while allowing said weft (Y) to be guided downwardly is formed in a front end portion of said top wall (18) which is located at a position near the cloth fell. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 3,
characterized in that a weft guiding edge portion (191) is formed at a lower end of said vertically suspended wall (19). - A weft inserting apparatus for a rapier loom as set forth in claim 4,
characterized in that said weft guiding edge portion (191) is formed in a shape bent toward the reed (20) from the lower end of said vertically suspended wall (19). - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 5,
characterized in that said guide frame and said vertically upstanding wall (16) are formed separately from each other, while a mounting member (221; 281) extending toward the bottom wall (15) is formed in said vertically upstanding wall (22; 28), and in that said guide frame (23; 27) and said vertically upstanding wall are integrally combined with each other by securing said bottom wall (15) and said mounting member (221; 281) to each other. - A weft inserting apparatus for a rapier loom as set forth in claim 6,
characterized in that said mounting member (221) of said vertically upstanding wall (22) is disposed on an upper surface of said bottom wall (15) of said guide frame (23) and fixedly secured thereto. - A weft inserting apparatus for a rapier loom as set forth in claim 6,
characterized in that said mounting member (281) of said vertically upstanding wall (28) is disposed on a lower surface of said bottom wall (15) of said guide frame (27) and fixedly secured thereto. - A weft inserting apparatus for a rapier loom as set forth in claim 7 or 8,
characterized in that a spacer (29) is interposed between said bottom wall (15) of said guide frame (27) and said mounting member (281) of said vertically upstanding wall (28). - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 9,
characterized in that a flat surface forming plate (21) is mounted on a lower surface of the mounting member of said vertically upstanding wall or alternatively on a lower surface of said bottom wall (15) of said guide frame (13) disposed in opposition to said guide member or said sley (10) disposed in the width direction of the woven fabric. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 10,
characterized in that the guide frame (13) composed of at least said side wall (17), said bottom wall (15) and said top wall (18) is formed by bending and/or folding a single metal sheet. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 10,
characterized in that said guide frame (13) and said vertically suspended wall (19) are formed by bending and/or folding a single metal sheet. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 10,
characterized in that said guide frame (13), said vertically suspended wall (19) and the weft guiding edge portion (191) provided at the lower end of said vertically suspended wall are formed by bending and/or folding a single metal sheet. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 10,
characterized in that said guide frame (13), said vertically suspended wall (19) and said vertically upstanding wall (16) are formed by bending and/or folding a single metal sheet. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 10,
characterized in that said guide frame (13), said vertically suspended wall (19), the weft guiding edge portion (191) provided at the lower end of said vertically suspended wall and said vertically upstanding wall (16, 22) are formed through a precision steel casting process or a powder-metallurgical process. - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 13,
characterized in that said guide frame (13), said vertically suspended wall (19) and the weft guiding edge portion (191) provided at the lower end of said vertically suspended wall (19) are formed by bending and/or folding a single metal sheet while said vertically upstanding wall (22) is formed through a precision steel casting process or a powder-metallurgical process. - A weft inserting apparatus for a rapier loom as set forth in claim 15 or 16,
characterized in that a mount base (222) for said gripping mechanism (14) is formed integrally with said vertically upstanding wall (22) or the mounting member (221) of said vertically upstanding wall (22) or across said vertically upstanding wall (22) and said mounting member (221). - A weft inserting apparatus for a rapier loom as set forth in any one of claims 1 to 17,
characterized in that said top wall (18) is partially formed with a reinforcing protrusion (186; 187). - A weft inserting apparatus for a rapier loom as set forth in claim 10,
characterized in that said flat surface forming plate (21) is made of synthetic resin materials.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9186736A JPH1136159A (en) | 1997-07-11 | 1997-07-11 | Picking device for repier loom |
JP186736/97 | 1997-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0893524A1 true EP0893524A1 (en) | 1999-01-27 |
Family
ID=16193758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98112299A Withdrawn EP0893524A1 (en) | 1997-07-11 | 1998-07-02 | Weft inserting apparatus for rapier loom |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0893524A1 (en) |
JP (1) | JPH1136159A (en) |
KR (1) | KR19990013464A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001079596A1 (en) * | 2000-04-17 | 2001-10-25 | Picanol N.V. | Rapier housing for the rapier of a loom |
EP1749912A1 (en) * | 2005-08-05 | 2007-02-07 | Smit S.p.A. - Unipersonale | Rapier tape head for rapier looms and procedure for its realisation |
CN105220318A (en) * | 2015-11-19 | 2016-01-06 | 长乐力天针纺有限公司 | A kind of weaving sword head send latitude sword clamping device |
CN105658856A (en) * | 2013-10-24 | 2016-06-08 | 米歇尔.范德威尔公司 | Giver rapier head, giver rapier, rapier weaving machine and method for inserting a weft thread in such a rapier weaving machine using such a giver rapier head |
CN107587243A (en) * | 2017-10-13 | 2018-01-16 | 浙江巨剑纺织机械有限公司 | A kind of rapier loom weft-sending sword head adapted to for a variety of yarns |
CN113293485A (en) * | 2021-05-26 | 2021-08-24 | 绍兴市嘉纬电子科技有限公司 | High-speed wear-resisting type weaving sword head |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100351416B1 (en) * | 1999-07-07 | 2002-09-09 | 대흥정밀공업 주식회사 | Gripper head for rapier loom |
KR100949722B1 (en) * | 2002-08-12 | 2010-03-25 | 에이펙셀 (주) | MICRO GRINDING MILL Dried type |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2222467A1 (en) * | 1973-03-22 | 1974-10-18 | Rockwell International Corp | |
US4071055A (en) * | 1975-09-29 | 1978-01-31 | Ruti Machinery Works Ltd. | Inserting carrier for looms with removal of a filling yarn from stationary bobbins |
GB2018307A (en) * | 1978-04-07 | 1979-10-17 | Somet Soc Mec Tessile | A weft-inserting gripper for a continuous weft feed loom |
JPH0214439A (en) * | 1988-06-30 | 1990-01-18 | Toshiba Corp | Focus controller |
EP0441099A1 (en) * | 1990-02-05 | 1991-08-14 | Sulzer RàTi Ag | Weft carrying gripper for gripper looms |
EP0624671A1 (en) * | 1993-05-12 | 1994-11-17 | Sulzer RàTi Ag | Thread retainer for a supply gripper and gripper loom with thread retainer |
EP0792961A1 (en) * | 1996-02-27 | 1997-09-03 | NUOVO PIGNONE S.p.A. | Giver gripper for a gripper loom |
-
1997
- 1997-07-11 JP JP9186736A patent/JPH1136159A/en active Pending
-
1998
- 1998-06-29 KR KR1019980024763A patent/KR19990013464A/en not_active Application Discontinuation
- 1998-07-02 EP EP98112299A patent/EP0893524A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2222467A1 (en) * | 1973-03-22 | 1974-10-18 | Rockwell International Corp | |
US4071055A (en) * | 1975-09-29 | 1978-01-31 | Ruti Machinery Works Ltd. | Inserting carrier for looms with removal of a filling yarn from stationary bobbins |
GB2018307A (en) * | 1978-04-07 | 1979-10-17 | Somet Soc Mec Tessile | A weft-inserting gripper for a continuous weft feed loom |
JPH0214439A (en) * | 1988-06-30 | 1990-01-18 | Toshiba Corp | Focus controller |
EP0441099A1 (en) * | 1990-02-05 | 1991-08-14 | Sulzer RàTi Ag | Weft carrying gripper for gripper looms |
EP0624671A1 (en) * | 1993-05-12 | 1994-11-17 | Sulzer RàTi Ag | Thread retainer for a supply gripper and gripper loom with thread retainer |
EP0792961A1 (en) * | 1996-02-27 | 1997-09-03 | NUOVO PIGNONE S.p.A. | Giver gripper for a gripper loom |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001079596A1 (en) * | 2000-04-17 | 2001-10-25 | Picanol N.V. | Rapier housing for the rapier of a loom |
US6923220B2 (en) | 2000-04-17 | 2005-08-02 | Picanol N.V. | Gripper housing |
EP1749912A1 (en) * | 2005-08-05 | 2007-02-07 | Smit S.p.A. - Unipersonale | Rapier tape head for rapier looms and procedure for its realisation |
CN105658856A (en) * | 2013-10-24 | 2016-06-08 | 米歇尔.范德威尔公司 | Giver rapier head, giver rapier, rapier weaving machine and method for inserting a weft thread in such a rapier weaving machine using such a giver rapier head |
CN105220318A (en) * | 2015-11-19 | 2016-01-06 | 长乐力天针纺有限公司 | A kind of weaving sword head send latitude sword clamping device |
CN105220318B (en) * | 2015-11-19 | 2018-01-05 | 长乐力天针纺有限公司 | One kind weaving sword head bringer sword clamping device |
CN107587243A (en) * | 2017-10-13 | 2018-01-16 | 浙江巨剑纺织机械有限公司 | A kind of rapier loom weft-sending sword head adapted to for a variety of yarns |
CN113293485A (en) * | 2021-05-26 | 2021-08-24 | 绍兴市嘉纬电子科技有限公司 | High-speed wear-resisting type weaving sword head |
Also Published As
Publication number | Publication date |
---|---|
KR19990013464A (en) | 1999-02-25 |
JPH1136159A (en) | 1999-02-09 |
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