EP0726341A2 - Vorrichtung für den Schusseintrag in einer Bandgreiferwebmaschine - Google Patents

Vorrichtung für den Schusseintrag in einer Bandgreiferwebmaschine Download PDF

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Publication number
EP0726341A2
EP0726341A2 EP96101427A EP96101427A EP0726341A2 EP 0726341 A2 EP0726341 A2 EP 0726341A2 EP 96101427 A EP96101427 A EP 96101427A EP 96101427 A EP96101427 A EP 96101427A EP 0726341 A2 EP0726341 A2 EP 0726341A2
Authority
EP
European Patent Office
Prior art keywords
rapier
wheel
band
belt
rapier band
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Withdrawn
Application number
EP96101427A
Other languages
English (en)
French (fr)
Other versions
EP0726341A3 (de
Inventor
Mitsuhiro Iwasaki
Masami Shinbara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyoda Jidoshokki Seisakusho KK
Toyoda Automatic Loom Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyoda Jidoshokki Seisakusho KK, Toyoda Automatic Loom Works Ltd filed Critical Toyoda Jidoshokki Seisakusho KK
Publication of EP0726341A2 publication Critical patent/EP0726341A2/de
Publication of EP0726341A3 publication Critical patent/EP0726341A3/de
Withdrawn legal-status Critical Current

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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
    • D03D47/27—Drive or guide mechanisms for weft inserting
    • 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
    • D03D47/275—Drive mechanisms
    • D03D47/276—Details or arrangement of sprocket wheels
    • 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
    • D03D47/272—Rapier bands
    • 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
    • D03D47/275—Drive mechanisms
    • 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
    • D03D47/277—Guide mechanisms

Definitions

  • the present invention relates to a weft thread inserting apparatus in a rapier loom, and more specifically, to a band type (flexible rapier) weft thread inserting apparatus using a flexibly deformable band with rigidity.
  • This type of a weft thread inserting apparatus includes a rapier band having a rapier head fixed at an extreme end thereof and a rapier wheel around which the rapier band is wound.
  • the rapier wheel is reciprocatingly rotated to cause the rapier head fixed to the rapier band to advance into a warp thread opening as well as to retract therefrom so as to insert weft threads.
  • a force for floating the rapier band from the circumference of the rapier wheel is applied to the rapier band by the action of a centrifugal force generated by the rotation of the rapier wheel.
  • Japanese Patent Publication No. 60-40538 shows an apparatus including an example of the arrangement for reciprocating a rapier band.
  • a rapier band 61 having a rapier head 60 fixed at an extreme end thereof is wound around a rapier wheel 62 in the state that the base end portion thereof is fixed around the circumference of the rapier wheel 62.
  • Two rollers 63, 64 are disposed above the rapier wheel 62 to prevent the rapier band 61 from floating from the circumference of the rapier wheel 62.
  • a rope 65 is wound between the rapier wheel 62 and both the rollers 63, 64 to press the rapier band 61 against the surface of the rapier wheel 62 around which the repair band 61 is wound.
  • grooves 63a, 64a are formed in the circumference of both the rollers 63, 64 to guide the rope 65.
  • the first roller 63 is disposed by being inclined with respect to a plane including the rapier wheel 62, whereas the second roller 64 is disposed in parallel with the above plane.
  • the rope 65 is fixed to the rapier wheel 62 at both the ends thereof and wound to draw approximately a letter "8" shape so that it winds the entire circumference of the rapier wheel 62 as well as substantially one half the circumferences of both the rollers 63, 64.
  • Both the rollers 63, 64 are urged by a spring (not shown) in a direction to apply pretension to the rope 65.
  • apparatuses each arranged such that a row of engaging projections are disposed on the circumference of a rapier wheel in a circumferential direction and a row of engaging holes are defined in a rapier band in a lengthwise direction, as disclosed in Japanese Patent Application Laid-Open Nos. 53-111160 and 1-97235.
  • the rapier band is wound around the rapier wheel in a turned-back state with the engaging projections being engaged with the engaging holes, the reciprocating rotation of a rapier wheel is transmitted to the rapier band through the engagement of the engaging projections with the engaging holes and a rapier head is reciprocated by the reciprocating rotation of the rapier wheel.
  • presser rollers are rotatably disposed on the back surface side of the portion where the rapier band is wound and which corresponds to the positions at which the rapier band leaves the rapier wheel.
  • presser members each composed of a porous synthetic material impregnated with grease or lubricant are fixedly disposed in place of the presser rollers.
  • a rapier band must be wound around a rapier wheel a plurality of times or the diameter of the rapier wheel must be increased.
  • the increase of the diameter of the rapier wheel greatly increases an inertia moment, by which an increase of speed of a rapier loom is prevented as well as power consumption is increased.
  • the rapier band is wound around and engaged with only a part of the entire circumference of the rapier wheel. Therefore, the diameter of the rapier wheel can be reduced, which is advantageous to an increase of speed of the rapier loom.
  • the presser rollers come into contact with the rapier band through a line and further the length of the contact portion is less than the width of the rapier band and very short. Therefore, slip is liable to be caused between the presser rollers and the rapier band.
  • the presser rollers press the rapier band in the state that it is free to rotate, the movement of the rapier band is against the inertia force of the rollers just after the moving direction of the rapier band is switched in particular, by which the slip is caused. Further, the rapier band is liable to be worn by sliding friction as well as a power loss is increased accordingly by an amount of the friction. In addition, since a large amount of heat is generated at the sliding portion of the rapier band, the rapier band composed of a resin is liable to be deteriorated and the life thereof is more shortened.
  • An object of the present invention made to solve the aforesaid conventional problems is to provide a weft thread inserting apparatus for a rapier loon capable of coping with an increase of the width of a fabric without increasing the diameter of a rapier wheel and improving the durability of a rapier band by avoiding sliding friction between the rapier band and presser members.
  • a weft thread inserting apparatus in a rapier loom including a flexible rapier band having a first end fixed to a rapier head as well as a row of engaging holes defined thereto in the lengthwise direction thereof so that they can be engaged with a row of engaging projections defined to the circumference of a rapier wheel at predetermined pitches, the rapier band being wound around the rapier wheel in a turned-back state with the engaging projections engaged with the engaging holes, wherein the rapier head is inserted into a warp thread opening as well as retracted therefrom by the reciprocating rotation of the rapier wheel to thereby inserting weft threads into the warp thread opening.
  • the weft thread inserting apparatus is arranged such that pressor rollers are rotatably disposed on the back surface side of the portion where the rapier band is wound and which corresponds to the positions at which the rapier band leaves the rapier wheel, an endless belt for transmitting the rotation of the rapier wheel to the presser rollers is wound between the rapier wheel, the presser rollers and a tension roller in the state that the belt cannot be engaged with the rapier band and the outside diameter of the portion of the rapier wheel 3 around which the belt is wound and the outside diameters of the presser rollers are set such that the reciprocating speed of the rapier band coincides with the circumferential speeds of the portions of the presser rollers in contact with the rapier band.
  • the reciprocating power of the rapier wheel which is reciprocatingly rotated is transmitted to the rapier band through the engaging projections and the engaging holes.
  • the rapier band is reciprocatingly moved by the transmission of the power so that the rapier head is advanced into and retracted from a warp thread opening to thereby insert weft threads into the warp opening.
  • the presser rollers press the back surface side of the portion where the rapier band is wound and which corresponds to the positions at which the rapier band leaves the rapier wheel.
  • the presser rollers are rotated through the belt such that the circumferential speeds of the portions of the presser rollers in contact with the rapier band coincide with the reciprocating speed of the rapier band.
  • the presser rollers come into contact with the rapier band through a line likewise conventional apparatuses.
  • the presser rollers are not rotated by frictional resistance at the portion where the presser rollers are in contact with the rapier band but rotated through the belt wound between the rapier wheel, the presser rollers and the tension roller. Therefore, no slip is caused between the presser rollers and the rapier band so that the wear of the rapier band can be prevented.
  • the tension roller is disposed on the side of a sley with respect to the rapier wheel. With this disposition, the entire width of a loom is not increased even if the tension roller is provided.
  • the belt is wound around the rapier wheel from the back surface side of the rapier band at the portion where the rapier band travels around the rapier wheel and the presser rollers are in contact with only the belt. Consequently, even if the outside diameters of the presser rollers are optionally changed regardless of the outside diameter of the rapier wheel, the moving speed of the belt coincides with the moving speed of the rapier band, no slip is caused between the rapier band and the rapier wheel and the wear of the rapier band can be prevented.
  • rollers are rotatably disposed on the back surface side of the portion where a rapier band is wound and which corresponds to the positions at which the rapier band leaves a rapier wheel and a belt is wound between the rapier wheel and both the rollers with a portion of the belt engaged with the back surface side of the circumferentially traveling portion of the rapier band as well as a portion thereof engaged with the rapier wheel.
  • the belt presses the rapier band against the rapier wheel at the portion where the rapier band travels around the rapier wheel. Since the belt is in contact with the rapier band on the entire circumferentially traveling portion thereof and moved at the same speed as that of the rapier band, no slip is caused between the belt and the rapier band and the wear of the rapier band is prevented.
  • the belt is composed of a round elastic belt
  • a guide portion for guiding the belt is defined to the rapier wheel at a position whose phase is displaced in a width direction with respect to the winding portion of the rapier band and a winding portion is defined to each of the rollers to permit the belt to move in a width direction between the guide portion and the position corresponding to the winding position of the rapier band.
  • the belt is reciprocatingly moved with a portion thereof securely pressed against the back surface of the rapier band on the circumferentially traveling portion thereof while guided by the guide portion of the rapier wheel and the guide grooves of the rollers.
  • FIG. 1 is a schematic front elevational view showing the weft insertion start end side of a weft thread inserting apparatus, wherein since a weft thread insertion finish end side disposed on the right side of the apparatus is symmetrically arranged with the weft thread insertion start end side, only the weft threads insertion start end side will be described without showing and describing the weft threads insertion finish end side.
  • rapier wheels 3, rapier bands 4 and drive mechanisms for the rapier wheels 3 are symmetrically disposed on the right side and the left side across a reed 2 supported on a sley 1.
  • the sley 1 is supported on a rocking shaft 7 through a sley sword 6.
  • the sley 1 is rotated about the rocking shaft 7 together with it.
  • a drive shaft 8 is rotatably disposed just below the rocking shaft 7.
  • the drive shaft 8 is disposed in parallel with the rocking shaft 7 and a driven gear 9 is fixed to the drive shaft 8 so that it can be rotated together with the drive shaft 8.
  • a servo motor 10 is disposed in the vicinity of the drive shaft 8.
  • the servo motor 10 has an output shaft 10a to which a driving gear 11 is fixed so that it is rotated together with the output shaft 10a.
  • the driving gear 11 is meshed with the driven gear 9 and the rotation of the servo motor 10 is transmitted to the drive shaft 8 through the driving gear 11 and the driven gear 9. Since the servo motor 10 rotates only in one direction, the drive shaft 8 also rotates only in one direction.
  • Double cams 12 are fixed to each end of the drive shaft 8 so that they can be rotated together with the drive shaft 8 and a double cam lever 13 is fixed to each end of the rocking shaft 7 so that it is rotated together with the rocking shaft 7.
  • the double cans 12 and the double cam lever 13 constitute a positive cam mechanism so that the rotation in the one direction of the drive shaft 8 is converted into the reciprocating rotation of the rocking shaft 7 through the positive cam mechanism.
  • the sley 1 is reciprocatingly rocked forward and backward by the reciprocating rotation of the rocking shaft 7 so that the reed 2 effects a reed beating operation.
  • An inclined shaft crank 14 is fixed to each end of the drive shaft 8.
  • a fork-shaped intermediate link 15 is rotatably connected to the inclined shaft crank 14 and a support shaft 16 is rotatably supported by the intermediate link 15.
  • a segment gear 17 is rotatably supported at an intermediate portion of the support shaft 16.
  • the inclined shaft crank 14, intermediate link 5, support shaft 16 and segment gear 17 constitute a three-dimensional crank mechanism 18.
  • the rapier wheel 3 is disposed on the side of the three-dimensional crank mechanism 18 so that it can be rotated together with a support shaft 19.
  • the support shaft 19 is horizontally disposed intersecting perpendicularly to the drive shaft 8.
  • a driven gear 20 is fixed to the support shaft 19 so that it can be rotated together with the support shaft 19.
  • the segment gear 17 is meshed with the driven gear 20 and the rotation in the one direction of the drive shaft 8 is converted into the reciprocating rotation of the rapier wheel 3 through the three-dimensional crank mechanism 18 and driven gear 20. That is, the rapier wheel 3 is reciprocatingly rotated by the action of the servo motor 10.
  • Train-shaped engaging projections 21 are defined on the circumference of the rapier wheel 3 at predetermined pitches.
  • the rapier band 4 is composed of a flexible material with rigidity and has train-shaped engaging holes 22 (shown in FIG. 2) defined along the lengthwise direction of thereof, the engaging holes 2 capable of being engaged with the engaging projections.
  • the rapier band 4 is wound around the rapier wheel 3 in a turned-back state with the engaging projection being engaged with the engaging holes.
  • a delivery rapier head 23 is fixed to the first end of the rapier band 4.
  • the engaging projections 21 are spaced apart from the engaging holes 22 at suitable intervals so that the projections 21 are smoothly engaged with the holes 22.
  • Presser rollers 24, 25 are rotatably disposed on the back surface side of the portion where the rapier band 4 is wound and which corresponds to the positions at which the rapier band 4 leaves the rapier wheel 3.
  • the presser rollers 24, 25 have shafts 24a, 25a which are rotatably supported by support brackets 26.
  • Each of the support brackets 26 has a base end portion slidably inserted into a fixedly disposed support frame 27.
  • a hollow-nut-type slider 28 is slidably and unrotatably accommodated in the support frame 27.
  • An adjustment screw 29 passes through and is threaded with the base end portion of the support frame 27.
  • the adjustment screw 29 is threaded with the slider at the extreme end thereof.
  • a compressed spring 30 is interposed between the slider 28 and the support bracket 26.
  • the presser rollers 24, 25 are pressed against the rapier wheel 3 by the spring force of the compressed spring 30 so that the presser rollers 24, 25 press the rapier band 4 against the rapier wheel
  • the position of the slider 28 in the support frame 27 can be changed by changing the threading position of the adjustment screw 29 with the support frame 27.
  • the spring force of the compressed spring 30 is changed by the change of the position, by which the pressing force of the presser rollers 24, 25 against the rapier band 4 is adjusted and changed.
  • grooves 24b, 25b are defined to the presser rollers 24, 25 at the positions thereof corresponding to the engaging projections 21 to permit the engaging projections 21 to pass therethrough.
  • a tension roller 31 is disposed on the sley 1 side with respect to the rapier wheel 3.
  • An endless belt 32 is wound between the rapier wheel 3, presser rollers 24, 25 and tension roller 31 in the state that it cannot be engaged with the rapier band 4.
  • the belt 32 is composed of a flat belt. The belt 32 transmits the rotation of the rapier wheel 3 to the presser rollers 24, 25.
  • the outside diameter of the portion of the rapier wheel 3 around which the belt 32 is wound and the outside diameters of the presser rollers 24, 25 are set so that the reciprocating speed of the rapier band 4 coincide with the circumferential speeds of the portions of the pressor rollers 24, 25 where the presser rollers 24, 25 are in contact with the rapier band 4.
  • the outside diameters of the portions the presser rollers 24, 25 around which the belt 32 is wound are different from the outside diameters thereof in contact with the rapier band 4.
  • R the radius of the rapier wheel 3
  • t the thickness of the rapier band 4
  • r 1 the radii of the portions of the presser rollers 24, 25 in contact with the rapier band 4
  • r 2 the radii of the portions of the presser rollers 24, 25 around which the belt 32 is wound
  • the outside diameters of the portions of the presser rollers 24, 25 around which the belt 32 is wound are smaller than the outside diameters of the portions thereof in contact with the rapier band 4.
  • the outside diameter of the portion of the rapier wheel 3 around which the rapier band 4 is wound is different from the outside diameter of the portion thereof around which the rapier wheel 32 is wound.
  • the radius of the presser rollers 24, 25 is represented by r
  • the radius of the portion of the rapier wheel 3 around which the rapier band 4 is wound is represented by R 1
  • the radius of the portion of the rapier wheel 3 around which the rapier wheel 32 is wound is represented by R 2
  • the shaft 31a of the tension roller 31 is supported by substantially the same arrangement as that of the shafts 24a, 25a of the presser rollers 24, 25 except that a tension spring 33 is provided in place of the compressed spring 30. That is, the tension spring 33 is stretched between the slider 28 and the support bracket 26.
  • the drive shaft 8 is rotated in the one direction through the driving gear 11 and the driven gear 9 when the servo motor 10 is driven.
  • the rotation of the drive shaft 8 is converted into the reciprocating rotation of the rocking shaft 7 through the double cams 12 and the double cam lever 13.
  • the sley 1 is reciprocatingly rocked forward and backward by the reciprocating rotation of the rocking shaft 7 so that the reed 2 effects a reed beating operation.
  • the rotation of the drive shaft 8 is converted into the reciprocating rotation of the rapier wheel 3 through the three-dimensional crank mechanism 18 and the driven gear 20.
  • the reciprocating rotation of the rapier wheel 3 is transmitted to the rapier band 4 through the engagement of the engaging projections 21 with the engaging holes 22 to thereby reciprocatingly move the rapier band 4.
  • the rapier head 23 is caused to advance into and retract from the warp thread opening by the reciprocating movement of the rapier band 4.
  • the right and left rapier wheels 3 are rotated in an opposite direction each other. Therefore, both the rapier heads 23 advance into the warp thread opening in synchronism with each other, meet at the center of the width direction of a fabric and then retracts from the warp thread opening.
  • Weft threads (not shown) transported into the warp thread opening by the delivery rapier head 23 is delivered to the receiving rapier head. Then, when the receiving rapier head retracts from the warp thread opening, the weft threads are inserted into the warp thread opening.
  • the belt 32 Since the belt 32 is wound around substantially one half the circumference of the rapier wheel 3 as well as caused to come into contact the rapier wheel 3 under pressure by the tension roller 31 with a proper press force, no slip is caused between the belt 32 and the rapier wheel 3. Since the belt 32 is also wound around more than one half the circumferences of the presser rollers 24, 25 as well as a proper tensile force is applied to the belt 32, no slip is caused between the belt 32 and the presser rollers 24, 25.
  • the presser rollers 24, 25 are rotated by the belt 32 so that the circumferential speeds of the portions thereof around which the belt 32 is wound are the same as the moving speed of the belt 32, that is, the circumferential speed of the portion of the rapier wheel 3 around which the belt 32 is wound.
  • the portions of the presser rollers 24, 25 in contact with the rapier band 4 is rotated at a circumferential speed which is the same as the moving speed of the rapier band 4. Therefore, the presser rollers 24, 25 press the rapier band 4 against the rapier wheel 3 side in the state that no slip is caused between the presser rollers 24, 25 and the rapier band 4 to thereby regulate the separation of the rapier band 4 from the rapier wheel 3.
  • the tension roller 31 is disposed on the sley 1 side with respect to the rapier wheel 3 in this embodiment, the width of a loom is not increased as a whole even if the tension roller 31 is provided.
  • the tensile force of the belt 32 can be easily adjusted by changing the position of the tension roller 31, the tension force can be easily changed to a proper tension force corresponding to the r.p.m. of the loom.
  • train-shaped guide plates 34 may be disposed on the sley 1 in the lengthwise direction thereof to guide the rapier band 4, as shown in FIG. 1.
  • the guide plates 34 are engaged with both the ends of the rapier band 4 in the width direction thereof to guide the rapier band 4.
  • the provision of the guide plates 34 can reduce a failure ratio of the delivery of the weft threads effected between the delivery rapier head 23 and the receiving rapier head.
  • the second embodiment is different from the first embodiment in that a rapier band 4 is pressed against a rapier wheel 3 by a belt 37 wound between a pair of rollers 35, 36 and the rapier wheel 3 instead of being directly pressed by the aforesaid presser rollers 24, 25.
  • the same numerals as used in the first embodiment are used to denote the same parts in the second embodiment and the detailed description of the parts is omitted.
  • a guide groove 38 as a guide portion is formed to the rapier wheel 3 to guide the belt 37, the guide groove 38 being located at a position whose phase is dislocated in a width direction with respect to the portion of the rapier wheel 3 around which the rapier band 4 is wound (backside in the second embodiment).
  • the guide groove is formed to a width in which only the belt 37 can be accommodated.
  • the rollers 35, 36 are rotatably disposed on the back surface side of the portion where the papier band 4 is wound and which corresponds to the positions at which the rapier band 4 leaves the rapier wheel 3.
  • the shafts 35a, 36a of the rollers 35, 36 are rotatably supported by the same arrangement as that of the shaft 31a of the first embodiment and the rollers 35, 36 are disposed at positions where they cannot come into contact with the rapier band 4.
  • each of the rollers 35, 36 has a winding portion 39 formed thereto which permits the belt 37 to move between a winding portion located on the guide groove 38 side with respect to the engaging holes 4a of the rapier band 4 wound around the rapier wheel 3 and a position corresponding to the guide groove 38.
  • the winding portion 39 has a width in which two belts 37 can be disposed side by side with enough room.
  • the belt 37 is composed of a round elastic belt.
  • the belt 37 is wound around the rapier wheel 3 and both the rollers 35, 36 in a letter "8" shape in the state that the belt 37 is engaged with the backside surface of the rapier band 4 on the circumferntially rotating portion of the rapier band 4 as well as engaged with the guide groove 38 on the opposite side thereof. That is, the belt 37 is wound around the rollers 35, 36 at a winding angle of 360, respectively.
  • the radii of the rollers 35, 36 are represented by r
  • the thickness of the belt 37 is represented by t
  • the radius of the portion of the rapier wheel 3 around which the rapier band 4 is wound is represented by R 1
  • the radius of the portion of the rapier wheel 3 around which the belt 37 is wound is represented by R 2
  • they are set to satisfy the following relationship. (R 1 + t) : r R 2 : r That is, the radius of the rapier wheel 3 around which the belt 37 is wound, i.e. the radius of the guide groove 38 is larger than the radius of the portion thereof around which the rapier band 4 is wound by the thickness of the rapier band 4.
  • the belt 37 reciprocatingly moves without causing slip by being guided by the guide groove 38 and the winding portion 39 in the state that it is pressed against the circumferentially traveling portions of the respective rollers 35, 26 and rapier band 4 and the guide groove 38. Consequently, since sliding friction is avoided between the rapier band 4 and the belt 37, the rapier band 4 is not worn by the sliding friction. Further, power consumption can be reduced and the durability of the rapier band can be improved.
  • the belt 37 is composed of the round elastic belt, even if the belt 47 which is wound between the rapier wheel 3 and both the rollers 35, 36 in the letter "8" shape is twisted, the area of the belt 37 in contact with the rapier wheel 3, the rapier band 4 and both the rollers 35, 36 is not reduced, different from the case of a flat belt. Therefore, the belt 37 is smoothly moved.
  • an increase of the width of a fabric can be coped with without increasing the diameter of the rapier wheel and moreover slip between the rapier band and the presser members can be prevented. Therefore, the floating of the rapier band is prevented as well as the rapier band is not worn by friction, so that the durability of the rapier band can be improved.
  • the belt is composed of the round belt, even if the belt wound in the letter "8" shape is twisted, the area of the belt in contact with the rapier wheel, the rapier band and both the rollers is not reduced, different from the case of the flat belt, so that the belt is more smoothly moved.
  • a rapier band 4 having a first end fixed to a rapier head 23 includes a row of engaging holes 22 defined in the lengthwise direction thereof.
  • the rapier band 4 is wound around a rapier wheel 3 in the state that the engaging holes 22 are engaged with a row of engaging projections 21 defined to the circumference of the rapier wheel 3.
  • Presser rollers 24, 25 are rotatably disposed at positions corresponding to the positions where the rapier band 4 leaves the rapier wheel 3 and an endless belt 32 is wound aroung the rapier wheel 3, the presser rollers 24, 25 and a tension roller 31 so that the endless belt 32 does not interfere with the rapier band 4.
  • the outside diameter of the portion of the rapier wheel 3 around which the belt 32 is wound and the outside diameters of the presser rollers 24, 25 are set such that the reciprocating speed of the rapier band 4 coincides with the circumferential speeds of the presser rollers 24, 25.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP96101427A 1995-02-08 1996-02-01 Vorrichtung für den Schusseintrag in einer Bandgreiferwebmaschine Withdrawn EP0726341A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP20677/95 1995-02-08
JP7020677A JPH08209494A (ja) 1995-02-08 1995-02-08 レピア織機における緯入れ装置

Publications (2)

Publication Number Publication Date
EP0726341A2 true EP0726341A2 (de) 1996-08-14
EP0726341A3 EP0726341A3 (de) 1996-11-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101427A Withdrawn EP0726341A3 (de) 1995-02-08 1996-02-01 Vorrichtung für den Schusseintrag in einer Bandgreiferwebmaschine

Country Status (5)

Country Link
EP (1) EP0726341A3 (de)
JP (1) JPH08209494A (de)
KR (1) KR100189464B1 (de)
CN (1) CN1045642C (de)
TW (1) TW339374B (de)

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EP0884411A1 (de) * 1997-06-11 1998-12-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Schusseintragsvorrichtung für Greiferwebmaschinen und dreidimensionaler Kurbelmechanismus dafür
EP1669482A1 (de) * 2004-12-10 2006-06-14 Smit S.p.A. - Unipersonale Antriebsvorrichtung für Greiferbänder oder Greiferstangen in einer Greiferwebmaschine
CN103696107A (zh) * 2013-12-30 2014-04-02 苏州尤盛纺织有限公司 织机张力补偿装置

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CN103882611B (zh) * 2014-03-31 2015-04-29 山东日发纺织机械有限公司 剑杆织机的剑带导向的装置
CN103911749B (zh) * 2014-04-21 2015-04-29 江苏友诚数控科技有限公司 一种织机平旋引纬传动机构

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1443627A (fr) * 1965-07-30 1966-06-24 Métier à tisser avec organe d'insertion de trame à mouvement continu
JPS5311160A (en) * 1976-07-17 1978-02-01 Kobe Steel Ltd Method of taking in and out matetral of ring rolling mill
IT1066839B (it) * 1976-12-27 1985-03-12 Somet Soc Mec Tessile Telaio di tessitura ad alimentazione continua della trama
FR2427409A1 (fr) * 1978-05-31 1979-12-28 Rueti Ag Maschf Guidage de ruban pour un metier a tisser a griffes
CH630422A5 (en) * 1978-05-31 1982-06-15 Rueti Ag Maschf Band guide on a band-type gripper weaving machine
CH652764A5 (de) * 1981-10-14 1985-11-29 Rueti Ag Maschf Vorrichtung fuer den schusseintrag an einer bandgreiferwebmaschine.
IT1151228B (it) * 1982-05-25 1986-12-17 Vamatex Spa Disposizione di comando del moto delle pinze di trasporto della trama in telai di tessitura senza navette
JPS6328943A (ja) * 1986-07-15 1988-02-06 ゲブリユ−ダ−　ズルツア−　アクチエンゲゼルシヤフト ベルト・グリッパ式織機の横糸投入装置
WO1988007600A1 (fr) * 1987-04-03 1988-10-06 Textilma Ag Metier a tisser a pince
IT1222684B (it) * 1987-09-18 1990-09-12 Nuovo Pignone Spa Perfezionamenti nel sistema di trasporto delle pinze di un telaio tessile senza navetta

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0884411A1 (de) * 1997-06-11 1998-12-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Schusseintragsvorrichtung für Greiferwebmaschinen und dreidimensionaler Kurbelmechanismus dafür
EP1669482A1 (de) * 2004-12-10 2006-06-14 Smit S.p.A. - Unipersonale Antriebsvorrichtung für Greiferbänder oder Greiferstangen in einer Greiferwebmaschine
CN103696107A (zh) * 2013-12-30 2014-04-02 苏州尤盛纺织有限公司 织机张力补偿装置

Also Published As

Publication number Publication date
EP0726341A3 (de) 1996-11-13
KR960031672A (ko) 1996-09-17
TW339374B (en) 1998-09-01
CN1135543A (zh) 1996-11-13
JPH08209494A (ja) 1996-08-13
KR100189464B1 (ko) 1999-06-01
CN1045642C (zh) 1999-10-13

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