EP3636813A1 - Support apparatus for residual warp yarn clearing bar of loom - Google Patents
Support apparatus for residual warp yarn clearing bar of loom Download PDFInfo
- Publication number
- EP3636813A1 EP3636813A1 EP19199758.4A EP19199758A EP3636813A1 EP 3636813 A1 EP3636813 A1 EP 3636813A1 EP 19199758 A EP19199758 A EP 19199758A EP 3636813 A1 EP3636813 A1 EP 3636813A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- warp yarn
- clearing bar
- yarn clearing
- loom
- residual
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 19
- 239000004744 fabric Substances 0.000 description 13
- 230000004048 modification Effects 0.000 description 13
- 238000012986 modification Methods 0.000 description 13
- 238000009941 weaving Methods 0.000 description 7
- 235000014676 Phragmites communis Nutrition 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
- D03J1/02—Auxiliary apparatus combined with or associated with looms for treating warp, e.g. cleaning, moistening
-
- 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
- D03D49/04—Control of the tension in warp or cloth
- D03D49/22—Back rests; Lease rods; Brest beams
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
Definitions
- the present disclosure relates to a support apparatus for a residual warp yarn clearing bar of a loom, the residual warp yarn clearing bar being configured to clear residual warp yarns that were let off from a warp beam of the loom but were not utilized for weaving.
- a loom includes a bar for treating or clearing warp yarns that were let off from a warp beam of the loom but were not utilized for weaving, resulting in remainders (the bar is hereinafter referred to as the residual warp yarn clearing bar).
- the residual warp yarn clearing bar is supported by an apparatus configured to support the residual warp yarn clearing bar.
- a support apparatus for an end router stay disclosed in Japanese Examined Utility Model Application Publication No. H07-14377 is known. According to the Publication, an end of each end router stay is closely fitted into a groove formed in an end router bracket via a bushing that is formed of an elastic member.
- each end router stay is configured to be mounted with a plurality of end routers, and the end router bracket is fixed to an appropriate frame of the loom.
- Each bushing formed of an elastic member has a semi-elliptical cross section, whereas ends of the end router each have a substantially elliptical cross section.
- Each end router bracket has a groove formed to open upward, and a recessed groove formed near the opening of the end router bracket to extend in an axial direction thereof. A projecting portion of the bushing, which is formed on the outside near the opening, is fitted in the axially extending recessed groove.
- bushings made of an elastic member and having a vibration-absorbing property are interposed between the end router brackets and the end router stay, so that the vibration of the loom is not transmitted completely or directly to the end router stay, and the vibration of the end router stay is effectively reduced.
- the elastic members have a hardness appropriately selected in accordance with a predetermined rotational speed of the loom. Therefore, vibration of the loom can be reduced when a cloth is woven at the predetermined fixed rotational speed of the loom. Meanwhile, in the case of a cloth, such as a pile fabric, which requires the rotational speeds of the loom to be varied during the operation of the loom, it is difficult to appropriately select the hardness of the elastic members. That is, the varying of the rotational speed of the loom during the operation causes changes in the resonance frequency of the elastic members, which disables the reduction of the vibration of the end router stay that corresponds to the residual warp yarn clearing bar of the present disclosure.
- the present disclosure which has been made in view of the above circumstances, is directed to a support apparatus for a residual warp yarn clearing bar of a loom that reduces vibration of the residual warp yarn clearing bar even when weaving a cloth that requires the rotational speed of the loom to be varied during operation.
- a support apparatus for a residual warp yarn clearing bar of a loom is mounted to the loom, and includes a support bracket adapted to support the residual warp yarn clearing bar that is configured to guide residual warp yarns.
- the support apparatus for the residual warp yarn clearing bar includes an elastic member that is interposed between the residual warp yarn clearing bar and the support bracket, and has an upper portion that is contactable with the residual warp yarn clearing bar, a lower portion that is contactable with the support bracket, and an unenclosed space provided between the upper portion and the lower portion.
- the elastic member supports the residual warp yarn clearing bar with the upper portion contacting with the residual warp yarn clearing bar and the lower portion thereof contacting with the support bracket, and with the unenclosed space deformed between the upper portion and the lower portion.
- a loom 10 illustrated in FIG. 1 is an air jet loom in which weft yarns (not illustrated) are inserted into and transferred through a shed of warp yarns T using jets of compressed air.
- the loom 10 includes a pair of right and left side frames 11. It is noted that only one of the side frames 11 is illustrated in FIG. 1 .
- the loom 10 includes a warp beam 12 at a rear part of the loom 10.
- the warp beam 12 is supported by beam supports 13 fixed at rear parts of the respective side frames 11. Numerous warp yarns T are wound around the warp beam 12.
- the loom 10 includes, at a front part thereof, a cloth beam 14 supported by the side frames 11.
- the cloth beam 14 is configured to take up a woven cloth W.
- the loom 10 includes a warp shedding apparatus 15 configured to shed the warp yarns T that are let off from the warp beam 12, and a reed 16 for beating weft yarns inserted into the shed.
- the warp shedding apparatus 15 is driven by a motor for driving the loom 10 (not illustrated).
- the driving force of the motor for driving the loom 10 is transmitted to the reed 16, causing the reed 16 to be reciprocated back and forth to beat inserted weft yarns.
- a cycle of a shedding motion of the warp yarns T by the warp shedding apparatus 15, a weft insertion, and the beating motion of the reed 16 is repeated to thereby weave a cloth.
- a back roller 17 and a tensioning roller 18 are disposed above the warp beam 12.
- the back roller 17 and the tensioning roller 18 are provided to roller supports 19 that are mounted to the side frames 11.
- the warp yarns T let off form the warp beam 12 are guided by the back roller 17 and the tensioning roller 18 and fed to the warp shedding apparatus 15.
- a plurality of press rollers 20, a surface roller 21, and a guide roller 22 are disposed above the cloth beam 14.
- the woven cloth W is guided by the guide roller 22, the surface roller 21, and the press rollers 20, to be wound around the cloth beam 14.
- the loom 10 includes a residual warp yarn clearing bar 24 and a support apparatus 25 for the residual warp yarn clearing bar 24.
- the residual warp yarn clearing bar 24 is configured to clear and guide residual warp yarns T of the warp beam 12 that were not utilized for weaving.
- the residual warp yarn clearing bar 24 includes a bar main body 26, and a pair of receivers 27 extending out from opposite ends of the bar main body 26 in the longitudinal direction of the bar main body 26.
- the bar main body 26 is a hollow pipe made of a metal.
- Each receiver 27 has a plate shape and is welded to the bar main body 26.
- a guide (not illustrated) for guiding residual or unutilized warp yarns T is fitted to the bar main body 26 of the residual warp yarn clearing bar 24.
- the support apparatus 25 for the residual warp yarn clearing bar 24 includes a pair of right and left support brackets 28 adapted to support the residual warp yarn clearing bar 24, rubber cylindrical members 29 as the elastic members of the present disclosure that are interposed between the residual warp yarn clearing bar 24 and the support brackets 28.
- Each support bracket 28 includes an arm plate member 30, and a support member 31 attached to the plate member 30. The base portion of each plate member 30 is fastened to the roller support 19 with a bolt.
- Each support member 31 is fastened to an end portion of the corresponding plate member 30 with a bolt.
- each support member 31 is formed of a bent metal plate.
- Each support member 31 has an accommodating space 32 capable of accommodating therein one of the rubber cylindrical members 29.
- Each support member 31 includes a bottom wall portion 31A, a first side wall portion 31B connecting the bottom wall portion 31A and the plate member 30, a second side wall portion 31C facing the first side wall portion 31B, and a third side wall portion 31D located between the first side wall portion 31B and the second side wall portion 31C.
- Each support member 31 is configured such that the first side wall portion 31B, the second side wall portion 31C, and the third side wall portion 31D cooperate to prevent the rubber cylindrical member 29 accommodated in the accommodating space 32 and the residual warp yarn clearing bar 24 placed on the rubber cylindrical member 29 from slipping off from the support member 31.
- the rubber cylindrical members 29 are cylindrical members formed of a rubber-based material.
- the rubber cylindrical members 29 are each of a size that is capable of being accommodated in the accommodating spaces 32 of the support members 31.
- Each rubber cylindrical member 29 has an upper portion 29A that is contactable with the residual warp yarn clearing bar 24, a lower portion 29B that is contactable with the support bracket 28, and an unenclosed space 33 which has a columnar shape and is provided between the upper portion 29A and the lower portion 29B, as illustrated in FIG. 4 .
- the rubber cylindrical members 29 are deformable in a direction in which a vibration is absorbed.
- each rubber cylindrical member 29 when a vibration is absorbed in a radial direction of the rubber cylindrical member 29, the spring constant of the rubber cylindrical member 29 is sufficiently small, as compared with a solid columnar rubber body with no space, such as the space 33, and the rubber cylindrical member 29 is easily deformable in the radial direction.
- a rubber-based material having a hardness that does not collapse the space 33 is selected as the rubber-based material for the rubber cylindrical members 29.
- the rubber cylindrical members 29 are accommodated in the accommodating spaces 32 of the support members 31 so that the axial direction of the rubber cylindrical members 29 coincides with the front-rear or depth direction of the loom 10.
- the support brackets 28 support the residual warp yarn clearing bar 24 in such a manner that the support members 31 contact with the lower portions 29B of the rubber cylindrical members 29 and the receivers 27 of the residual warp yarn clearing bar 24 contact with the upper portions 29A of the rubber cylindrical members 29.
- the rubber cylindrical members 29 support the residual warp yarn clearing bar 24 with the upper portions 29A contacting with the residual warp yarn clearing bar 24 and the lower portions 29B contacting with the support members 31, and with the unenclosed spaces 33 deformed between the upper portions 29A and the lower portions 29B.
- the residual warp yarn clearing bar 24 is not attached to the support brackets 28 or the rubber cylindrical members 29 but is placed on the rubber cylindrical members 29. Accordingly, the residual warp yarn clearing bar 24 and the rubber cylindrical members 29 are mountable on and removable from the support brackets 28 easily.
- FIG. 4 illustrates the support apparatus 25 for the residual warp yarn clearing bar 24 as viewed from the rear side of the loom 10. It is also to be noted that, in FIG. 4 , the support brackets 28 are illustrated partially broken.
- each of the rubber cylindrical members 29 is deformed into a cylinder having an elliptic cross section, the longer axis of which extends in the right-and-left direction or the width direction of the loom 10.
- the support apparatus 25 for the residual warp yarn clearing bar 24 includes the rubber cylindrical members 29 that are interposed between the residual warp yarn clearing bar 24 and the support brackets 28.
- Each of the rubber cylindrical members 29 has the unenclosed space 33 between the upper portion 29A that is contactable with the residual warp yarn clearing bar 24 and the lower portion 29B that is contactable with the support bracket 28.
- the direction in which a vibration is absorbed is the vertical direction as indicated by an arrow F in FIG. 4 .
- the rubber cylindrical members 29 interposed between the residual warp yarn clearing bar 24 and the support brackets 28 are elastically deformed in accordance with the vibration of the loom 10 to thereby absorb the vibration of the loom 10. With this operation, the vibration received at the support brackets 28 is prevented from being further transmitted to the residual warp yarn clearing bar 24.
- the rubber cylindrical members 29 each have the unenclosed columnar space 33, which provides the rubber cylindrical members 29 with a spring constant that is sufficiently smaller as compared with that of a rubber member having a solid columnar shape with no internal space, such as the space 33.
- the rubber cylindrical members 29 are easily deformable in the radial direction thereof.
- the resonance frequency of the rubber cylindrical members 29 may be reduced without relying on the material of the rubber cylindrical members 29.
- the vibration of the residual warp yarn clearing bar 24 is reduced effectively even when weaving a cloth that requires the rotational speed of the loom 10 to be varied during operation.
- the spaces 33 of the rubber cylindrical members 29 are not collapsed completely.
- the empty warp beam 12 is replaced with a new warp beam 12.
- the residual warp yarn clearing bar 24 is placed on the rubber cylindrical members 29, a worker can remove the residual warp yarn clearing bar 24 from the loom 10 pretty easily.
- the residual warp yarn clearing bar 24 does not hinder the replacement work of the warp beams 12.
- the support apparatus 25 for the residual warp yarn clearing bar 24 of the loom 10 offers the following effects.
- elastic members according to a first modification are cylindrical members 35 each formed of a rubber-based material and having a C-shaped cross section.
- Each of the cylindrical members 35 supports the residual warp yarn clearing bar 24 with an upper portion 35A contacting with the residual warp yarn clearing bar 24 and a lower portion 35B contacting with the support members 31, and with an unenclosed space 36 provided between the upper portion 35A and the lower portion 35B deformed.
- the direction in which the vibration is absorbed is the vertical direction as indicated by an arrow F in FIG. 5A .
- elastic members according to a second modification are bent members 37 formed of a rubber-based material and each having an S-shaped cross section.
- Each of the bent members 37 supports the residual warp yarn clearing bar 24 with an upper portion 37A contacting with the residual warp yarn clearing bar 24 and a lower portion 37B contacting with the support members 31, and with an unenclosed space 38 and an unenclosed space 39 provided between the upper portion 37A and the lower portion 37B deformed.
- the direction in which the vibration is absorbed is the vertical direction as indicated by an arrow F in FIG. 5B .
- elastic members according to a third modification are bag members 40 formed of a rubber-based material.
- Each of the bag members 40 supports the residual warp yarn clearing bar 24 with an upper portion 40A contacting with the residual warp yarn clearing bar 24 and a lower portion 40B contacting with the support members 31, with an unenclosed space 41 provided between the upper portion 40A and the lower portion 40B deformed.
- the direction in which the bag members 40 are deformed coincides with the direction in which the vibration is absorbed as indicated by an arrow F, i.e., the vertical direction.
- the elastic members are cylindrical members each having a circular cross section
- the elastic members of the present disclosure are not limited thereto.
- the elastic members may be polygonal tubular members each having a polygonal cross section, such as a square, or, alternatively, the elastic members may be elliptic tubular members each having an elliptic cross section.
- the material for the elastic members is a rubber-based material
- the material for the elastic members need not necessarily be the rubber-based material
- the elastic members may be formed of a metal, for example.
- metallic elastic members are selected that are capable of supporting the residual warp yarns clearing bar with upper portions of the elastic members contacting with the residual warp yarn clearing bar and lower portions of the elastic members contacting with the support brackets, and with unenclosed spaces provided between the upper portions and the lower portions deformed.
- a metal having a hardness that does not cause the spaces to be completely collapsed is selected for the metallic elastic members.
- Each elastic member may have at least one unenclosed space between an upper portion that is contactable with the residual warp yarn clearing bar and a lower portion that is contactable with the support bracket, or otherwise, each elastic member may have three or more unenclosed spaces.
- the elastic members may each have an X-shaped cross section. In this case, each of the elastic members has four unenclosed spaces.
- the cylindrical members as the elastic members having a circular cross section are accommodated in the accommodating spaces of the support brackets in such a manner that the axial direction of the cylindrical members coincide with the front-rear or the depth direction of the loom
- the orientation of the elastic members in the accommodating spaces are not limited thereto.
- the cylindrical members may be accommodated in the accommodating spaces of the support brackets by turning the cylindrical members by 90 degrees in the horizontal direction so that the axial direction of the cylindrical members are parallel to the weft insertion direction of the loom. In this case, the elastic members are still deformed in the direction in which the vibration is absorbed.
- the elastic members may be accommodated in the accommodating spaces of the support brackets by turning the cylindrical members by 90 degrees in the horizontal direction.
- the support apparatus (25) includes an elastic member (29, 35, 37, 40) interposed between the residual warp yarn clearing bar (24) and the support bracket (28) and has an upper portion (29A, 35A, 37A, 40A), a lower portion (29B, 35B, 37B, 40B), and an unenclosed space (33, 36, 38, 39, 41) provided between the upper portion (29A, 35A, 37A, 40A) and the lower portion (29B, 35B, 37B, 40B).
- the elastic member (29, 35, 37, 40) supports the residual warp yarn clearing bar (24) with the upper portion (29A, 35A, 37A, 40A) contacting with the residual warp yarn clearing bar (24) and the lower portion (29B, 35B, 37B, 40B) contacting with the support bracket (28), and with the space (33, 36, 38, 39, 41) deformed between the upper portion (29A, 35A, 37A, 40A) and the lower portion (29B, 35B, 37B, 40B).
Abstract
Description
- The present disclosure relates to a support apparatus for a residual warp yarn clearing bar of a loom, the residual warp yarn clearing bar being configured to clear residual warp yarns that were let off from a warp beam of the loom but were not utilized for weaving.
- Generally, a loom includes a bar for treating or clearing warp yarns that were let off from a warp beam of the loom but were not utilized for weaving, resulting in remainders (the bar is hereinafter referred to as the residual warp yarn clearing bar). The residual warp yarn clearing bar is supported by an apparatus configured to support the residual warp yarn clearing bar. As an example of a conventional support apparatus for a residual warp yarn clearing bar, a support apparatus for an end router stay disclosed in Japanese Examined Utility Model Application Publication No.
H07-14377 - According to the support apparatus for the end router stay disclosed in the Publication No.
H07-14377 - According to the support apparatus for the end router stay disclosed in the Publication No.
H07-14377 - The present disclosure, which has been made in view of the above circumstances, is directed to a support apparatus for a residual warp yarn clearing bar of a loom that reduces vibration of the residual warp yarn clearing bar even when weaving a cloth that requires the rotational speed of the loom to be varied during operation.
- In accordance with an aspect of the present disclosure, there is provided a support apparatus for a residual warp yarn clearing bar of a loom. The support apparatus for the residual warp yarn clearing bar is mounted to the loom, and includes a support bracket adapted to support the residual warp yarn clearing bar that is configured to guide residual warp yarns. The support apparatus for the residual warp yarn clearing bar includes an elastic member that is interposed between the residual warp yarn clearing bar and the support bracket, and has an upper portion that is contactable with the residual warp yarn clearing bar, a lower portion that is contactable with the support bracket, and an unenclosed space provided between the upper portion and the lower portion. The elastic member supports the residual warp yarn clearing bar with the upper portion contacting with the residual warp yarn clearing bar and the lower portion thereof contacting with the support bracket, and with the unenclosed space deformed between the upper portion and the lower portion.
- The disclosure, together with objects and advantages thereof, may best be understood by reference to the following description of the presently preferred embodiments together with the accompanying drawings in which:
-
FIG. 1 is a side view schematically illustrating a loom according to a first embodiment of the present disclosure; -
FIG. 2 is a plan view illustrating a main part of the loom according to the first embodiment of the present disclosure; -
FIG. 3 is a perspective view illustrating a main part of a support apparatus for a residual warp yarn clearing bar of the loom according to the first embodiment of the present disclosure; -
FIG. 4 is a rear view of the support apparatus for the residual warp yarn clearing bar of the loom according to the first embodiment of the present disclosure; -
FIG. 5A is a rear view illustrating an elastic member according to a first modification of the present disclosure; -
FIG. 5B is a rear view illustrating an elastic member according to a second modification of the present disclosure; and -
FIG. 5C is a rear view illustrating an elastic member according to a third modification of the present disclosure. - The following will describe a support apparatus for a residual warp yarn clearing bar of a loom according to a first embodiment of the present disclosure with reference to the accompanying drawings. At first, the loom that includes the support apparatus for the residual warp yarn clearing bar will now be described.
- A
loom 10 illustrated inFIG. 1 is an air jet loom in which weft yarns (not illustrated) are inserted into and transferred through a shed of warp yarns T using jets of compressed air. Theloom 10 includes a pair of right andleft side frames 11. It is noted that only one of theside frames 11 is illustrated inFIG. 1 . Theloom 10 includes awarp beam 12 at a rear part of theloom 10. Thewarp beam 12 is supported by beam supports 13 fixed at rear parts of therespective side frames 11. Numerous warp yarns T are wound around thewarp beam 12. Theloom 10 includes, at a front part thereof, acloth beam 14 supported by theside frames 11. Thecloth beam 14 is configured to take up a woven cloth W. - The
loom 10 includes awarp shedding apparatus 15 configured to shed the warp yarns T that are let off from thewarp beam 12, and areed 16 for beating weft yarns inserted into the shed. Thewarp shedding apparatus 15 is driven by a motor for driving the loom 10 (not illustrated). The driving force of the motor for driving theloom 10 is transmitted to thereed 16, causing thereed 16 to be reciprocated back and forth to beat inserted weft yarns. A cycle of a shedding motion of the warp yarns T by thewarp shedding apparatus 15, a weft insertion, and the beating motion of thereed 16 is repeated to thereby weave a cloth. - A
back roller 17 and atensioning roller 18 are disposed above thewarp beam 12. Theback roller 17 and thetensioning roller 18 are provided toroller supports 19 that are mounted to theside frames 11. The warp yarns T let off form thewarp beam 12 are guided by theback roller 17 and thetensioning roller 18 and fed to thewarp shedding apparatus 15. - A plurality of
press rollers 20, asurface roller 21, and aguide roller 22 are disposed above thecloth beam 14. The woven cloth W is guided by theguide roller 22, thesurface roller 21, and thepress rollers 20, to be wound around thecloth beam 14. - The
loom 10 includes a residual warpyarn clearing bar 24 and asupport apparatus 25 for the residual warpyarn clearing bar 24. The residual warpyarn clearing bar 24 is configured to clear and guide residual warp yarns T of thewarp beam 12 that were not utilized for weaving. As illustrated inFIG. 2 , the residual warpyarn clearing bar 24 includes a barmain body 26, and a pair ofreceivers 27 extending out from opposite ends of the barmain body 26 in the longitudinal direction of the barmain body 26. The barmain body 26 is a hollow pipe made of a metal. Eachreceiver 27 has a plate shape and is welded to the barmain body 26. A guide (not illustrated) for guiding residual or unutilized warp yarns T is fitted to the barmain body 26 of the residual warpyarn clearing bar 24. - The
support apparatus 25 for the residual warpyarn clearing bar 24 includes a pair of right andleft support brackets 28 adapted to support the residual warpyarn clearing bar 24, rubbercylindrical members 29 as the elastic members of the present disclosure that are interposed between the residual warpyarn clearing bar 24 and thesupport brackets 28. Eachsupport bracket 28 includes anarm plate member 30, and asupport member 31 attached to theplate member 30. The base portion of eachplate member 30 is fastened to theroller support 19 with a bolt. Eachsupport member 31 is fastened to an end portion of thecorresponding plate member 30 with a bolt. - As illustrated in
FIG. 3 , eachsupport member 31 is formed of a bent metal plate. Eachsupport member 31 has anaccommodating space 32 capable of accommodating therein one of the rubbercylindrical members 29. Eachsupport member 31 includes abottom wall portion 31A, a firstside wall portion 31B connecting thebottom wall portion 31A and theplate member 30, a secondside wall portion 31C facing the firstside wall portion 31B, and a thirdside wall portion 31D located between the firstside wall portion 31B and the secondside wall portion 31C. Eachsupport member 31 is configured such that the firstside wall portion 31B, the secondside wall portion 31C, and the thirdside wall portion 31D cooperate to prevent the rubbercylindrical member 29 accommodated in theaccommodating space 32 and the residual warpyarn clearing bar 24 placed on the rubbercylindrical member 29 from slipping off from thesupport member 31. - The rubber
cylindrical members 29 are cylindrical members formed of a rubber-based material. The rubbercylindrical members 29 are each of a size that is capable of being accommodated in theaccommodating spaces 32 of thesupport members 31. Each rubbercylindrical member 29 has anupper portion 29A that is contactable with the residual warpyarn clearing bar 24, alower portion 29B that is contactable with thesupport bracket 28, and anunenclosed space 33 which has a columnar shape and is provided between theupper portion 29A and thelower portion 29B, as illustrated inFIG. 4 . The rubbercylindrical members 29 are deformable in a direction in which a vibration is absorbed. In each rubbercylindrical member 29, when a vibration is absorbed in a radial direction of the rubbercylindrical member 29, the spring constant of the rubbercylindrical member 29 is sufficiently small, as compared with a solid columnar rubber body with no space, such as thespace 33, and the rubbercylindrical member 29 is easily deformable in the radial direction. A rubber-based material having a hardness that does not collapse thespace 33 is selected as the rubber-based material for the rubbercylindrical members 29. - In the present embodiment, the rubber
cylindrical members 29 are accommodated in theaccommodating spaces 32 of thesupport members 31 so that the axial direction of the rubbercylindrical members 29 coincides with the front-rear or depth direction of theloom 10. As illustrated inFIG. 4 , thesupport brackets 28 support the residual warpyarn clearing bar 24 in such a manner that thesupport members 31 contact with thelower portions 29B of the rubbercylindrical members 29 and thereceivers 27 of the residual warpyarn clearing bar 24 contact with theupper portions 29A of the rubbercylindrical members 29. In other words, the rubbercylindrical members 29 support the residual warpyarn clearing bar 24 with theupper portions 29A contacting with the residual warpyarn clearing bar 24 and thelower portions 29B contacting with thesupport members 31, and with theunenclosed spaces 33 deformed between theupper portions 29A and thelower portions 29B. Thus, the residual warpyarn clearing bar 24 is not attached to thesupport brackets 28 or the rubbercylindrical members 29 but is placed on the rubbercylindrical members 29. Accordingly, the residual warpyarn clearing bar 24 and the rubbercylindrical members 29 are mountable on and removable from thesupport brackets 28 easily. It is to be noted thatFIG. 4 illustrates thesupport apparatus 25 for the residual warpyarn clearing bar 24 as viewed from the rear side of theloom 10. It is also to be noted that, inFIG. 4 , thesupport brackets 28 are illustrated partially broken. - When the residual warp
yarn clearing bar 24 is supported by thesupport brackets 28, the rubbercylindrical members 29 are elastically deformed in the radial direction of the rubbercylindrical members 29 by the weight of the residual warpyarn clearing bar 24. By the elastic deformation of the rubbercylindrical members 29, thecolumnar spaces 33 of the rubbercylindrical members 29 are deformed accordingly. As a result, each of the rubbercylindrical members 29 is deformed into a cylinder having an elliptic cross section, the longer axis of which extends in the right-and-left direction or the width direction of theloom 10. - Subsequently, reduction of the vibration of the residual warp
yarn clearing bar 24 by thesupport apparatus 25 for the residual warpyarn clearing bar 24 according to the present embodiment will now be described. Thesupport apparatus 25 for the residual warpyarn clearing bar 24 includes the rubbercylindrical members 29 that are interposed between the residual warpyarn clearing bar 24 and thesupport brackets 28. Each of the rubbercylindrical members 29 has theunenclosed space 33 between theupper portion 29A that is contactable with the residual warpyarn clearing bar 24 and thelower portion 29B that is contactable with thesupport bracket 28. In the present embodiment, the direction in which a vibration is absorbed is the vertical direction as indicated by an arrow F inFIG. 4 . - Although the vibration of the
loom 10 is still transmitted to thesupport brackets 28, the rubbercylindrical members 29 interposed between the residual warpyarn clearing bar 24 and thesupport brackets 28 are elastically deformed in accordance with the vibration of theloom 10 to thereby absorb the vibration of theloom 10. With this operation, the vibration received at thesupport brackets 28 is prevented from being further transmitted to the residual warpyarn clearing bar 24. - Furthermore, the rubber
cylindrical members 29 each have the unenclosedcolumnar space 33, which provides the rubbercylindrical members 29 with a spring constant that is sufficiently smaller as compared with that of a rubber member having a solid columnar shape with no internal space, such as thespace 33. With this configuration, the rubbercylindrical members 29 are easily deformable in the radial direction thereof. In other words, the resonance frequency of the rubbercylindrical members 29 may be reduced without relying on the material of the rubbercylindrical members 29. As a result, the vibration of the residual warpyarn clearing bar 24 is reduced effectively even when weaving a cloth that requires the rotational speed of theloom 10 to be varied during operation. Furthermore, even when the rubbercylindrical members 29 are elastically deformed in accordance with the vibration of theloom 10, thespaces 33 of the rubbercylindrical members 29 are not collapsed completely. - Meanwhile, when the warp yarns T of the
warp beam 12 have been used up for weaving, theempty warp beam 12 is replaced with anew warp beam 12. In this case, since the residual warpyarn clearing bar 24 is placed on the rubbercylindrical members 29, a worker can remove the residual warpyarn clearing bar 24 from theloom 10 pretty easily. Thus, the residual warpyarn clearing bar 24 does not hinder the replacement work of the warp beams 12. - The
support apparatus 25 for the residual warpyarn clearing bar 24 of theloom 10 according to the present embodiment offers the following effects. - (1) The rubber
cylindrical members 29 support the residual warpyarn clearing bar 24 with theupper portions 29A contacting with the residual warpyarn clearing bar 24 and thelower portions 29B contacting with thesupport brackets 28, and with theunenclosed spaces 33 provided between theupper portions 29A and thelower portions 29B deformed. Thus, even when weaving a cloth that requires the rotational speed of theloom 10 to be varied during operation, the rubbercylindrical members 29 having theunenclosed spaces 33 are elastically deformed easily as compared with rubber columnar members as the elastic members that are solid and simply interposed in the same manner as the rubbercylindrical members 29 of the present embodiment. That is, the resonance frequency of the rubbercylindrical members 29 may be reduced without relying on the material of the rubbercylindrical members 29, so that the vibration of the residual warpyarn clearing bar 24 may be reduced effectively. - (2) Each rubber
cylindrical member 29 is a cylindrical body having therein thecolumnar space 33. Thus, elastic members of a simple configuration may be obtained. Furthermore, radial positioning of the rubbercylindrical members 29 relative to thesupport brackets 28 need not be taken into consideration, which makes it easier to dispose the rubbercylindrical members 29 between the residual warpyarn clearing bar 24 and thesupport brackets 28. - (3) Since a rubber-based material is used for the rubber
cylindrical members 29 as the elastic members, the rubbercylindrical members 29 may be manufactured relatively easily at a lower cost. - (4) With the
unenclosed spaces 33, the spring constant of the rubbercylindrical members 29 may be reduced without relying solely on the elasticity of the rubber-based material forming the rubbercylindrical members 29. Therefore, for example, other inexpensive materials having an elasticity equivalent to that of the rubber-based material may be used alternatively to the rubber-based material used for the rubbercylindrical members 29, so that the freedom of material selection is increased. - The following will describe first to third modifications of the elastic members according to the present embodiment. As illustrated in
FIG. 5A , elastic members according to a first modification arecylindrical members 35 each formed of a rubber-based material and having a C-shaped cross section. Each of thecylindrical members 35 supports the residual warpyarn clearing bar 24 with anupper portion 35A contacting with the residual warpyarn clearing bar 24 and alower portion 35B contacting with thesupport members 31, and with anunenclosed space 36 provided between theupper portion 35A and thelower portion 35B deformed. The direction in which the vibration is absorbed is the vertical direction as indicated by an arrow F inFIG. 5A . - As illustrated in
FIG. 5B , elastic members according to a second modification arebent members 37 formed of a rubber-based material and each having an S-shaped cross section. Each of thebent members 37 supports the residual warpyarn clearing bar 24 with anupper portion 37A contacting with the residual warpyarn clearing bar 24 and alower portion 37B contacting with thesupport members 31, and with anunenclosed space 38 and anunenclosed space 39 provided between theupper portion 37A and thelower portion 37B deformed. The direction in which the vibration is absorbed is the vertical direction as indicated by an arrow F inFIG. 5B . - As illustrated in
FIG. 5C , elastic members according to a third modification arebag members 40 formed of a rubber-based material. Each of thebag members 40 supports the residual warpyarn clearing bar 24 with anupper portion 40A contacting with the residual warpyarn clearing bar 24 and alower portion 40B contacting with thesupport members 31, with anunenclosed space 41 provided between theupper portion 40A and thelower portion 40B deformed. The direction in which thebag members 40 are deformed coincides with the direction in which the vibration is absorbed as indicated by an arrow F, i.e., the vertical direction. - It is to be noted that each of the above embodiment and the modifications thereof exemplifies an embodiment of the present disclosure. The present disclosure should not be construed as limited to the above embodiment and the modifications thereof, and may variously be modified within the gist of the present disclosure.
- In the above embodiment, although the elastic members are cylindrical members each having a circular cross section, the elastic members of the present disclosure are not limited thereto. For example, the elastic members may be polygonal tubular members each having a polygonal cross section, such as a square, or, alternatively, the elastic members may be elliptic tubular members each having an elliptic cross section.
- In the above embodiment and the modifications thereof, although the material for the elastic members is a rubber-based material, the material for the elastic members need not necessarily be the rubber-based material, and the elastic members may be formed of a metal, for example. In this case, metallic elastic members are selected that are capable of supporting the residual warp yarns clearing bar with upper portions of the elastic members contacting with the residual warp yarn clearing bar and lower portions of the elastic members contacting with the support brackets, and with unenclosed spaces provided between the upper portions and the lower portions deformed. In addition, a metal having a hardness that does not cause the spaces to be completely collapsed is selected for the metallic elastic members.
- The elastic members of the present disclosure are not limited to those described in the above embodiment and the modifications thereof. Each elastic member may have at least one unenclosed space between an upper portion that is contactable with the residual warp yarn clearing bar and a lower portion that is contactable with the support bracket, or otherwise, each elastic member may have three or more unenclosed spaces. For example, the elastic members may each have an X-shaped cross section. In this case, each of the elastic members has four unenclosed spaces.
- In the above embodiment, although the cylindrical members as the elastic members having a circular cross section are accommodated in the accommodating spaces of the support brackets in such a manner that the axial direction of the cylindrical members coincide with the front-rear or the depth direction of the loom, the orientation of the elastic members in the accommodating spaces are not limited thereto. For example, the cylindrical members may be accommodated in the accommodating spaces of the support brackets by turning the cylindrical members by 90 degrees in the horizontal direction so that the axial direction of the cylindrical members are parallel to the weft insertion direction of the loom. In this case, the elastic members are still deformed in the direction in which the vibration is absorbed. In the first to third modifications also, the elastic members may be accommodated in the accommodating spaces of the support brackets by turning the cylindrical members by 90 degrees in the horizontal direction.
- A support apparatus (25) for a residual warp yarn clearing bar (24) of a loom (10) that is mounted to the loom (10), and includes a support bracket (28) adapted to support the residual warp yarn clearing bar (24) that is configured to guide residual warp yarns (T). The support apparatus (25) includes an elastic member (29, 35, 37, 40) interposed between the residual warp yarn clearing bar (24) and the support bracket (28) and has an upper portion (29A, 35A, 37A, 40A), a lower portion (29B, 35B, 37B, 40B), and an unenclosed space (33, 36, 38, 39, 41) provided between the upper portion (29A, 35A, 37A, 40A) and the lower portion (29B, 35B, 37B, 40B). The elastic member (29, 35, 37, 40) supports the residual warp yarn clearing bar (24) with the upper portion (29A, 35A, 37A, 40A) contacting with the residual warp yarn clearing bar (24) and the lower portion (29B, 35B, 37B, 40B) contacting with the support bracket (28), and with the space (33, 36, 38, 39, 41) deformed between the upper portion (29A, 35A, 37A, 40A) and the lower portion (29B, 35B, 37B, 40B).
Claims (3)
- A support apparatus (25) for a residual warp yarn clearing bar (24) of a loom (10), the support apparatus (25) being mounted to the loom (10), the support apparatus (25) comprising:a support bracket (28) adapted to support the residual warp yarn clearing bar (24) that is configured to guide residual warp yarns (T), characterized in thatthe support apparatus (25) includes an elastic member (29, 35, 37, 40) that is interposed between the residual warp yarn clearing bar (24) and the support bracket (28), and has an upper portion (29A, 35A, 37A, 40A) that is contactable with the residual warp yarn clearing bar (24), a lower portion (29B, 35B, 37B, 40B) that is contactable with the support bracket (28), and an unenclosed space (33, 36, 38, 39, 41) provided between the upper portion (29A, 35A, 37A, 40A) and the lower portion (29B, 35B, 37B, 40B), andthe elastic member (29, 35, 37, 40) supports the residual warp yarn clearing bar (24) with the upper portion (29A, 35A, 37A, 40A) contacting with the residual warp yarn clearing bar (24) and the lower portion (29B, 35B, 37B, 40B) contacting with the support bracket (28), and with the space (33, 36, 38, 39, 41) deformed between the upper portion (29A, 35A, 37A, 40A) and the lower portion (29B, 35B, 37B, 40B).
- The support apparatus (25) for the residual warp yarn clearing bar (24) according to claim 1, characterized in that the elastic member (29) is a cylindrical body.
- The support apparatus (25) for the residual warp yarn clearing bar (24) according to claim 1 or 2, characterized in that the elastic member (29, 35, 37, 40) is formed of a rubber-based material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018191441A JP7159770B2 (en) | 2018-10-10 | 2018-10-10 | Surplus warp trimming bar support device for loom |
Publications (2)
Publication Number | Publication Date |
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EP3636813A1 true EP3636813A1 (en) | 2020-04-15 |
EP3636813B1 EP3636813B1 (en) | 2021-10-27 |
Family
ID=68069654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19199758.4A Active EP3636813B1 (en) | 2018-10-10 | 2019-09-26 | Loom having a residual warp yarn clearing bar and a support apparatus for a a residual warp yarn clearing bar |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3636813B1 (en) |
JP (1) | JP7159770B2 (en) |
CN (1) | CN111020822B (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE251905C (en) * | ||||
DE3346030A1 (en) * | 1983-12-20 | 1985-06-20 | Institute für Textil- und Faserforschung Stuttgart, 7306 Denkendorf | Weaving machine |
JPH0355880U (en) * | 1989-10-03 | 1991-05-29 | ||
JPH0714377A (en) | 1993-06-23 | 1995-01-17 | Nec Ibaraki Ltd | Magnetic disk device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08200442A (en) * | 1995-01-30 | 1996-08-06 | Dainippon Screen Mfg Co Ltd | Vibration isolating fixture |
JPH09111611A (en) * | 1995-10-12 | 1997-04-28 | Toyota Autom Loom Works Ltd | Retainer for retaining surplus weft adjusting bar and cheese stand in loom |
JPH10166920A (en) * | 1996-12-13 | 1998-06-23 | Mitsubishi Motors Corp | Shock absorber |
CN108018644A (en) * | 2017-12-28 | 2018-05-11 | 湖州多恒服饰有限公司 | A kind of full-automatic loom device of garment production |
-
2018
- 2018-10-10 JP JP2018191441A patent/JP7159770B2/en active Active
-
2019
- 2019-09-26 EP EP19199758.4A patent/EP3636813B1/en active Active
- 2019-10-08 CN CN201910948770.1A patent/CN111020822B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE251905C (en) * | ||||
DE3346030A1 (en) * | 1983-12-20 | 1985-06-20 | Institute für Textil- und Faserforschung Stuttgart, 7306 Denkendorf | Weaving machine |
JPH0355880U (en) * | 1989-10-03 | 1991-05-29 | ||
JPH0714377A (en) | 1993-06-23 | 1995-01-17 | Nec Ibaraki Ltd | Magnetic disk device |
Also Published As
Publication number | Publication date |
---|---|
CN111020822B (en) | 2022-04-15 |
JP7159770B2 (en) | 2022-10-25 |
CN111020822A (en) | 2020-04-17 |
EP3636813B1 (en) | 2021-10-27 |
JP2020059943A (en) | 2020-04-16 |
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