EP2653594A1 - Schaftrahmensprosse aus einem kohlefaserverstärkten verbundwerkstoff und anbringungsteilstruktur für eine seitenstütze - Google Patents

Schaftrahmensprosse aus einem kohlefaserverstärkten verbundwerkstoff und anbringungsteilstruktur für eine seitenstütze Download PDF

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Publication number
EP2653594A1
EP2653594A1 EP11848072.2A EP11848072A EP2653594A1 EP 2653594 A1 EP2653594 A1 EP 2653594A1 EP 11848072 A EP11848072 A EP 11848072A EP 2653594 A1 EP2653594 A1 EP 2653594A1
Authority
EP
European Patent Office
Prior art keywords
metal
side stay
made bar
bar
heald frame
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Withdrawn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
EP11848072.2A
Other languages
English (en)
French (fr)
Other versions
EP2653594A4 (de
Inventor
Yoshishige Nogami
Toshikazu TAKEDA
Masaki Shimada
Yuki Nobuzawa
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.)
NANKAI INDUSTRIAL Co Ltd
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
NANKAI IND CO Ltd
Nankai Industrial Co Ltd
Kanae Co Ltd
Nippon Steel Materials Co 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 NANKAI IND CO Ltd, Nankai Industrial Co Ltd, Kanae Co Ltd, Nippon Steel Materials Co Ltd filed Critical NANKAI IND CO Ltd
Publication of EP2653594A1 publication Critical patent/EP2653594A1/de
Publication of EP2653594A4 publication Critical patent/EP2653594A4/de
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0608—Construction of frame parts
    • D03C9/0616—Horizontal upper or lower rods
    • D03C9/0625—Composition or used material
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0608—Construction of frame parts
    • D03C9/065—Side stays
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C9/00—Healds; Heald frames
    • D03C9/06—Heald frames
    • D03C9/0666—Connection of frame parts
    • D03C9/0675—Corner connections between horizontal rods and side stays

Definitions

  • the present invention relates generally to a structure of a heald frame used in a loom, and more particularly relates to a heald frame stave made of carbon fiber reinforced composite material and a side stay attaching part structure for coupling a heald frame stave made of carbon fiber reinforced composite material and a side stay with each other.
  • a heald frame is a member for supporting a heald for letting a warp go through in a loom, and is for alternately moving a pair of heald frames in a vertical direction to open warps and drive a weft into the opening at a weaving time.
  • a heald frame 1 generally has upper and lower frame staves extending in a longitudinal direction (in a direction of arrow A), namely, both frame main bodies 2, and side stays 3 arranged at both ends of both the frame main bodies 2 in the longitudinal direction and coupling both the frame main bodies 2 with each other.
  • Supporting projection portions 5 for a hook hanger supporting a heald 4 along the longitudinal direction of the frame main bodies 2 are integrally formed at one end side of the frame main bodies 2 opposed to each other in a short-side direction (in a direction of arrow B) perpendicular to the lengthwise direction of the frame main bodies 2.
  • the frame main bodies 2 and the side stays 3 are generally connected to each other by coupling portions 6 in a detachable structure.
  • guide plates 7 for preventing the heald frames 1 from interfering with each other and couplings 8 positioned at portions transmitting power of vertical movement to the heald frame 1 are attached to the heald frame 1.
  • frame main bodies 2 are currently made of aluminum, and in the case of the aluminum-made frame main body 2, a hollow structure is adopted, as shown in Figure 2 , but the hollow structure is a structure having several lateral ribs 21 in order to exert strength of the hollow portion thereof.
  • Patent Literature 1 For example, a joining method between an FRP-made frame stave and a side stay has been disclosed in Patent Literature 1, and a structure where replacement of a part such as a broken or worn middle hook hanger, a broken or worn rod receiving part or the like is facilitated while rigidity and strength of an FRP-made heald frame are being maintained has been proposed in Patent Literature 2.
  • a frame main body of this machine type is made of aluminum, but load acting on the frame main body increases due to the widening, and strength or rigidity of the frame main body cannot follow the increase of the load sufficiently, so that increase in speed results in breakage of the frame main body. Therefore, there is such an actual condition that weaving with increased speed cannot be performed and a merit obtained by the widening cannot be enjoyed.
  • CFRP fiber-reinforced composite material using carbon fibers as reinforcing fibers
  • CFRP is used in some parts of a frame main body, but because strength or rigidity of a product is insufficient, there is such an actual condition that CFRP is applied to only frame main bodies with a width of about 1500 mm. The reason is because even if the frame main body is decreased in weight, the speed of the loom cannot be increased due to lack in strength or rigidity.
  • the present inventors proposed a heald frame made of fiber-reinforced composite material in Patent Literature 3 in order to provide a heald frame made of fiber-reinforced composite material which can exert a maximum strength and rigidity within a limited structure and has a configuration reduced in weight and robust over fatigue strength, thereby being capable of improving productivity of a widened loom which could not have been achieved before now largely.
  • FIG. 3 A schematic configuration of the heald frame made of fiber-reinforced composite material described in Patent Literature 3 is shown in Figure 3 .
  • the heald frame made of fiber-reinforced composite material has an approximately flat plate-shaped frame main body 2 formed in an elongated shape and extending in a longitudinal direction (having a length L) and a supporting projection 5 continuously connected to a lower end of the frame main body 2 integrally along the longitudinal direction thereof.
  • the frame main body 2 has a honeycomb structure 4 in its inner layer, and long fiber-reinforced composite materials 11 (11a, 11b) serving as surface layers are arranged on both faces of the inner layer in an aspect of sandwiching the honeycomb structure 4 of the inner layer.
  • reinforced portions 9 are formed in a portion or a whole of peripheral end faces of the honeycomb structure 4 of the inner layer by packing short fiber-reinforced composite material, resin, or foamed material into the honeycomb structure 4 in a range of a width of 3mm to 30mm.
  • the conventional coupling method is a system using various kinds of fittings to perform coupling, weights of the coupling portions become heavy so that a merit of weight reduction is halved.
  • Figure 4 shows a whole configuration of a frame main body 2.
  • the frame main body 2 is configured to be similar to the frame main body 2 of Patent Literature 3 shown in the above Figure 3 , and has a honeycomb structure 9 in an inner layer, where long fiber-reinforced composite materials 11 (11a, 11b) are arranged on surface layers and a reinforced portion 10 is formed in a portion or a whole of peripheral end faces of the honeycomb structure 9 of the inner layer by packing short fiber-reinforced composite material, resin, or foamed material into a honeycomb structure 4 in a range of a width of 3mm to 30mm.
  • the frame main body 2 is configured to be fixed by inserting side stay attaching projection portions 60 formed at both side portions of the frame main body 2 into grooves 3A of side stays 3.
  • a heald frame made of fiber-reinforced composite material such as described in the above Patent Literature 4 has such a feature that not only bending strength or bending elastic modulus of the frame main body 2 is improved largely but also reinforcement regarding stress concentration on an end face of the frame main body 2 is achieved and robustness to bending fatigue is achieved, so that in a widened loom weaving speed exceeding a conventional weaving speed is not only achieved but also continuous weaving time is improved largely.
  • An object of making a heald frame stave which is the frame main body from carbon fiber reinforced composite material in the heald frame lies in achievement of speed-up and vibration-isolating property of a loom owing to weight reduction and high rigidity. Of course, it is essential to achieve response to length elongation and quality improvement.
  • CFRP carbon fiber reinforced composite material
  • the present invention is obtained by further developing the heald frame made of fiber reinforced composite material.
  • An object of the present invention is to provide a heald frame stave made of carbon fiber reinforced composite material which can achieve speed-up and vibration-isolating property of a loom owning to weight reduction and high rigidity and can be assembled and disassembled easily, and a side stay attaching part structure for coupling a frame stave and a side stay with each other.
  • a heald frame stave made of carbon fiber reinforced composite material and a side stay attaching part structure for coupling a frame stave and a side stay with each other according to the present invention a heald frame stave made of carbon fiber reinforced composite material and having a hollow structure which is formed in an elongated shape, extends in a longitudinal direction thereof, and is attached with side stays at both end portions thereof in the longitudinal direction, comprising:
  • a reinforcing plate is provided on a lower face of the upper plate between the two first metal-made bars attached at the both end portions of the upper plate in the longitudinal direction, respectively, and the reinforcing plate is made of unidirectional carbon fiber reinforced composite material produced by directing carbon fibers in a pulling fashion in the longitudinal direction, and a thickness thereof in a vertical direction perpendicular to the longitudinal direction is in a range of 5 mm or more to 20 mm or less.
  • the first metal-made bars and the both side plates are coupled to each other by metal-made rivets.
  • a side stay attaching part structure for attaching the heald frame stave made of carbon fiber reinforced composite material and having a hollow structure of the above configuration to the side stay, wherein the side stay is provided with a side stay main body extending in a vertical direction, and a side stay insertion portion projecting from the side stay main body toward the heald frame stave to be capable of being inserted into the heald frame stave of the hollow structure, a fixing bolt is inserted from the upper plate so as to penetrate the upper plate, the first metal-made bar, and the side stay insertion portion, and a second metal-made bar having a screw hole is screwed to a lower end of the fixing bolt, and the side stay insertion portion which has been inserted into the heald frame stave is fixed to the heald frame stave by the fixing bolt and the second metal-made bar.
  • the side stay insertion portion is formed with a convex projection on an upper face thereof, and a recessed groove engaged with the convex projection of the side stay insertion portion when the side stay insertion portion has been inserted into the heald frame stave is formed on a lower face of the first metal-made bar contacting with the upper face of the side stay insertion portion.
  • the second metal-made bars are coupled to the both side plates by metal-made rivets, and the both side plates are formed with slits positioned between the first metal-made bar and the second metal-made bar and extending from the respective side ends of the both side plates in the longitudinal direction by a predetermined length.
  • a moving metal-made bar for adjustment is arranged so as to be positioned below the first metal-made bar and is fixed to the upper plate and the first metal-made bar by a fixing bolt, the side stay insertion portion is inserted between the moving metal-made bar for adjustment and the second metal-made bar, and the fixing bolt is inserted from the side of the upper plate so as to penetrate the upper plate, the first metal-made bar, the moving metal-made bar for adjustment, and the side stay insertion portion to be screwed in the second metal-made bar having a screw hole disposed at a lower end of the fixing bolt.
  • the side stay insertion portion is formed with a convex projection on an upper face thereof, and a recessed groove engaged with the convex projection of the side stay insertion portion when the side stay insertion portion has been inserted into the heald frame stave is formed on a lower face of the moving metal-made bar for adjustment contacting with an upper face of the side stay insertion portion.
  • an opening portion is formed on at least one of the both side plates in a region corresponding to the position of the first metal-made bar.
  • a third metal-made bar is provided so as to be positioned below the second metal-made bar, the third metal-made bar is coupled to the both side plates by metal-made rivets, and the second metal-made bar is formed with a convex projection on a lower face thereof, a recessed groove is formed on an upper face of the third metal-made bar opposed to the lower face of the second metal-made bar, and the convex projection of the second metal-made bar is fitted into the recessed groove of the third metal-made bar when the side stay has been attached to the heald frame stave.
  • the second metal-made bar is an L-shaped fixing member having a horizontal member having the screw hole screwed with the fixing bolt and a vertical member extending in a vertical direction to the horizontal member.
  • a projection fitted in a groove formed on a lower face of the first metal-made bar or the moving metal-made bar for adjustment is formed on an upper face of the vertical member of the L-shaped fixing member.
  • the side stay insertion portion is a plate-shaped member formed in an approximately rectangular shape and having a thickness fitted into the hollow portion of the heald frame stave, and a U-shaped groove is formed in the side stay insertion portion so as to extend in a vertical direction from a distal end portion opposed to the side stay main body to the side stay main body by a predetermined length and be opened at the distal end portion, the side stay insertion portion is inserted into the heald frame stave such that the U-shaped groove of the side stay insertion portion is fitted to the fixing bolt which has been inserted from the side of the upper plate, and the side frame which has been inserted into the heald frame stave is fixed by the fixing bolt and the second metal-made bar.
  • speed-up and vibration isolating property of a loom can be achieved owing to weight reduction and high rigidity, and assembling and disassembling are easy.
  • a heald frame stave made of carbon fiber reinforced composite material and a side stay attaching part structure for coupling a heald frame stave and a side stay with each other according to the present invention will be described further in detail with reference to the drawings.
  • Figure 5 , Figure 6 , and Figure 7 are schematic configuration of an embodiment of a heald frame stave 2 made of carbon fiber reinforced composite material according to the present invention.
  • Figure 5 and Figure 6 are a perspective view and cross-sectional views showing an upper frame heald frame stave 2, namely, an upper-side frame main body 2 having a hollow structure, constituting a heald frame 1 made of fiber-reinforced composite material (see Figure 1 ), respectively.
  • Figure 7 is a perspective view showing the frame main body 2 and a portion of a side stay 3 positioned on a side portion of the frame main body 2 in a longitudinal direction of the frame main body 2.
  • Y direction is called “vertical direction (or short-side direction) and X direction is called “horizontal direction (or longitudinal direction) in Figure 5 for simple explanation such that the configuration of the heald frame stave 2 of this embodiment can be understood better.
  • a heald frame has a whole configuration similar to the configuration of the conventional heald frame 1 shown in Figure 1 , and it is provided with a frame stave 2 having a hollow structure which is a frame main body formed in an elongated shape and extending in a longitudinal direction and side stays 3 integrally provided at both side portions of the frame main body 2 in the longitudinal direction.
  • the frame main body 2 has a hollow structure portion 2A constituted as a hollow structure, and a supporting projection portion for hook hanger 5 supporting the heald 4 (see Figure 1 ) along a longitudinal direction of the frame main body 2 is formed on one end side of the hollow structure partion 2A in a short-side direction perpendicular to the longitudinal direction of the hollow structure portion 2A, namely, a lower end edge side of the frame main body 2 extending along the longitudinal direction thereof.
  • upper ends of the frame main body 2 on both end portions in the longitudinal direction of the frame main body 2 are constituted as structures for coupling the side stay 3 and the frame main body 2, namely, side stay attaching part structures 60, as shown in Figure 7 .
  • the hollow structure portion 2A of the frame main body 2 is composed of rectangular both side plates 11 (11a, 11b) extending in the longitudinal direction and lateral ribs 10 coupling upper ends of the both side plates 11a and 11b with each other and lower ends thereof with each other, namely, an upper plate 10a and a lower plate 10b, as shown in Figure 5 and Figure 6(a) .
  • side stay fixing members made of metal, namely, a metal-made bar (first metal-made bar) 20 made of, for example, steel, stainless steel, copper, or aluminum are provided on a lower face of the upper plate 10 at both end portions of the upper plate 10a in the longitudinal direction in order to configure side stay attaching part structures 60.
  • the metal-made bar 20 has a rectangular shape in a cross section and a width T20 thereof is set to a distance T3 between inner faces of the both side plates 11a and 11b, and the metal-made bar 20 is disposed inside a space between the both side plates 11a and 11b.
  • a length (L20) of the metal-made bar 20 extending along the longitudinal direction of the side plates 11 is set to a predetermined length, for example, 3 to 8 cm, generally, about 5cm.
  • a thickness (H3) of the metal-made bar 20 is set to 5 to 10 mm, generally, about 5 mm.
  • the metal-made bar 20 is fixed to the upper plate 10a positioned on an upper side by adhesive agent. Further, the metal-made bar 20 can be joined to the both side plates 11 (11a, 11b) by rivets 22 made of metal, for example, steel, stainless steel, copper, or aluminum and penetrating side faces of the metal-made bar 20 from the both side plate sides, as shown in Figure 8 .
  • an additional lateral rib (namely, a reinforcing plate) 10c composed of carbon fiber-reinforcing composite material and having a constitution similar to that of the upper plate 10a may be fixed to a lower face of the upper plate 10a between the metal-made bars 20 and 20 constituting the side stay fixing portions arranged at both end portions of the frame main body 2 in the longitudinal direction thereof by adhesion or the like.
  • the supporting projection portion 5 integrally formed on the lower portion of the frame main body 2 is composed of a rectangular supporting plate 5a integrally formed together with the side plate 11a along a lower end edge of the side plate 11a positioned on one side of the frame main body 2 in the longitudinal direction, and a projection portion 5b formed adjacent to a lower end of the supporting plate 5a and having a rectangle in cross-sectional shape.
  • the supporting plate 5a can be formed by further extending the side walls 11a and 11b of the frame main body 2 downward and joining them so as to surround a projecting material 5c at lower ends thereof.
  • the hollow structure portion 2A of the frame main body 2 formed in a hollow structure and further the supporting projecting portion 5 are substantially made of carbon fiber reinforced composite material.
  • specific sizes of the frame main body 2 in this embodiment are as follows:
  • a length W1 of the hollow structure portion 2A of the frame main body 2 in the vertical direction is set to 118 mm, while a length W2 of the supporting projection portion 5 in the vertical direction is set to 37 mm. That is, the width W of the whole frame main body 2 is set to 155 mm, and a length W3 in the vertical direction from the lower end of the frame main body 2, namely, the lower plate 10b, to the projection portion 5b is set to 25 mm.
  • a length L of the frame main body 2 in the longitudinal direction can be set to a length exceeding 3500 mm, but it is set to 2374 mm in this embodiment. 3500 mm, but
  • a size T1 between outer surfaces of the both side plates 11a and 11b is set to 9 mm, and a thickness T2 of each of the side plates 11a and 11b is set to 1 mm (namely, the distance T3 between the inner surfaces of the both side plates 11a and 11b is set to 7 mm). Further, a thickness T4 of the supporting plate 5a is set to 2 mm.
  • the upper plate 10a and the lower plate 10b, and the reinforcing plate 10c of the frame main body 2 are made of unidirectional carbon fiber reinforced composite material formed by directing carbon fibers of long fibers in one direction to arrange them in the longitudinal direction, where thicknesses H1, H2 and H4 ( Figure 9 ) are set in a range from 5 mm more to 20 mm or less (generally, 5 to 10 mm).
  • thicknesses H1, H2 and H4 Figure 9
  • thicknesses H1, H2 and H4 are set in a range from 5 mm more to 20 mm or less (generally, 5 to 10 mm).
  • a required strength for the heald frame stave 2 cannot be obtained.
  • an UD shape where the fibers have been directed in one direction in a pulling fashion a plain weave or satin weave shape woven biaxially, or a triaxial weave shape woven triaxially can be used alone, or a plurality of them are used in a combined fashion.
  • the upper plate 10a and the lower plate 10b serving as the lateral ribs 10 (and the reinforcing plate 10c) take the UD shape where the fibers have been directed in one direction in a pulling fashion, as described above.
  • any of epoxy resin, unsaturated polyester resin, vinyl ester resin, MMA resin, and phenol resin can be used as matrix resin used in the carbon fiber reinforced composite material.
  • the volume fraction of fiber of the carbon fiber reinforced composite material is in a range of 30 to 70%, ordinarily, in a range of 50 to 60%.
  • the supporting plate 5a of the supporting projection portion for hook hanger 5 integrally provided to continuously connect to the frame main body 2 is formed by causing the carbon fiber reinforced composite materials forming the both side plates 11 (11a, 11b) of the frame main body 2 to adhere to each other.
  • a distal end portion of the supporting projection portion 5 has a projection 5b having a predetermined shape for functioning as a hook hanger.
  • the projection 5b can be integrally formed by interposing projection material 5c such as long fiber-reinforced composite material, short fiber-reinforced composite material, resin, or resin-foamed material between the carbon fiber reinforced composite materials 11a and 11b forming the supporting plate 5a.
  • Reinforcing fiber constituting the projection material 5c is not limited to the carbon fiber but glass fiber, organic fiber or the like can be used.
  • the side stay attaching part structure 60 has the metal-made bar 20 arranged as a fixing member of the side stay 3 at an upper end of each of both side end portions of the frame main body 2.
  • Figures 7(a) and 7(b) show one embodiment of the side stay attaching part structure 60 for coupling the metal-made bar 20 provided at the right end of the frame main body 2 in the longitudinal direction thereof and the side stay 3 on the right side with each other.
  • Another side stay 3 is also arranged on the left end of the frame main body 2 in the same manner as the right end and a similar side stay attaching part structure is configured, but the latter side stay attaching part structure is omitted in Figures 7(a) and 7(b) .
  • the upper plate 10a and the metal-made bars 20 provided at both the ends of the frame main body 2 in the longitudinal direction thereof are formed with through-holes 12 and 21 coaxially extending from the upper plate 10a through the metal-made bars 20 in a vertical direction, respectively.
  • the metal-made bar 20 having a rectangular sectional shape is preferably formed with a recessed groove 22 having a rectangular cross section machined on a lower face of the metal-made bar 20 along the longitudinal direction.
  • the side stay 3 has a side stay main body 30 which is a metal-made member having a rectangular cross section and extending in the vertical direction, and an insertion portion 31 integrally formed at an upper end of the side stay main body 30 so as to project from an upper end thereof at a right angle and inserted into the frame main body hollow structure portion 2A to be attached to the frame main body 2.
  • a material for the side stay 3 namely, the side stay main body 30 and the insertion portion 31, steel, stainless steel, aluminum or the like is used.
  • the insertion portion 31 is a plate-shaped member which extends from the side stay main body 30 at a right angle by a predetermined length, for example, 30 to 80 mm, which can be attached to a side face hollow portion of the frame main body 2, and which is formed in an approximately-rectangular shape.
  • a U-shaped groove 32 is formed at a distal end portion of the insertion portion 31 so as to extend from a distal end face positioned on the opposite side of the side stay main body 30 by a predetermined length (about 1/2 of L30) and extend through the insertion portion 31 in the vertical direction.
  • the convex projection 33 on the upper face of the insertion portion 31 of the side stay 3 is fitted in the groove 22 on the lower face of the metal-made bar 20, so that the side stay 3 is aligned and integrally attached to the side end portion of the frame main body 2 in the longitudinal direction.
  • a movable metal-made bar 40 serving as a second fixing member is arranged below the fixed metal-made bar (first metal-made bar) 20 serving as a first fixing member fixed to the upper plate 10a so as to be separated from the same by a predetermined distance.
  • the second metal-made bar 40 can be made of material similar to that of the first metal-made bar 20 and can have a dimension similar to the latter. However, the second metal-made bar 40 is formed with a screw hole 41 by machining. That is, the second metal-made bar 40 functions as a nut member for a side stay fixing bolt 38. Incidentally, the second metal-made bar 40 does not have a groove identical to the groove 22 formed in the first metal-made bar 20.
  • the side stay fixing bolt 38 is inserted from the upper plate 10a toward the first metal-made bar 20 to penetrate the through-holes 12 and 21 and screwed into the screw hole 41 of the second metal-made bar 40.
  • the insertion portion 31 of the side stay 31 is inserted into the hollow portion of the frame main body 2 so as to be sandwiched between the first metal-made bar 20 and the second metal-made bar 40 such that the shaft portion of the fixing bolt 38 is fitted into the U-shaped groove 32 of the insertion portion 31.
  • the convex projection 33 on the upper face of the insertion portion 31 of the side stay 3 is fitted into the groove 22 of the metal-made bar 20, so that the side stay 3 is integrally attached to the side face of the frame main body 2.
  • the lower face of the side stay insertion portion 31 is caused to abut on the upper face of the second metal-made bar 40.
  • the insertion portion 31 of the side say 3 is sandwiched between the first metal-made bar 20 and the second metal-made bar 40 by the fixing bolt 38, so that the side stay 3 is firmly fixed to the side end portion of the frame main body 2.
  • Figure 11 shows another modified embodiment 1-1 of a side stay attaching part structure 60 of the embodiment 1.
  • the second metal-made bar 40 is used as the movable fixing member, and prior to plugging of the insertion portion 31 of the side stay 3 into the side end hollow portion of the frame main body 2, as shown in Figure 10 , the movable second metal-made bar 40 is disposed in the side portion hollow portion of the frame main body 2, and the distal end portion of the fixing bolt 38 is screwed to the second metal-made bar 40.
  • a second metal-made bar 40A similar to the second metal-made bar 40 in the embodiment 1 is used, but the second metal-made bar 40A in the modified embodiment 1-1 is different from the second metal-made bar 40 regarding such a point that a projection portion 40A1 extending in a longitudinal direction (namely, the longitudinal direction of the frame main body 2) is formed on a lower face of the second metal-made bar 40A.
  • the whole configuration and the function of the second metal-made bar 40A are similar to those of the second metal-made bar 40 of the embodiment 1.
  • a fixed third metal-made bar 50 is disposed to be positioned below the movable metal-made bar 40A.
  • the third metal-made bar 50 is fixed to the both side plates 11 (11a, 11b) by rivets 51 penetrating side faces thereof from the both side plates.
  • a recessed groove 52 having a shape fitted on the projection portion 40A1 formed on the lower face of the above second metal-made bar 40A is formed on an upper face of the third metal-made plate 50 along a longitudinal direction (namely, the longitudinal direction of the frame main body 2).
  • the lower face projection portion 40A1 of the second metal-made bar 40A is fitted on the recessed groove 52 formed on the upper face of the third metal-made bar 50 fixed to the frame main body 2, and with this configuration, horizontal oscillation of the side stay 3 can be suppressed.
  • the movable second metal-made bar 40 is disposed at the side portion hollow portion of the frame main body 2, and the distal end portion of the fixing bolt 38 is screwed into the movable second metal-made bar 40.
  • an L-shaped fixing member 35 is used as the second metal-made bar instead of the above movable second metal-made bar 40. That is, the L-shaped fixing member 35 is composed of a vertical member 35a and a horizontal member 35b, and a convex projection 36 with a predetermined length fitted into the groove 22 of the metal-made bar 20 is formed on an upper face of the vertical member 35a.
  • the horizontal member 35b is formed with a screw hole 37 screwed on the side stay fixing bolt 38 in the vertical direction.
  • the horizontal member 35b functions as a nut member for the fixing bolt 38.
  • the configuration of the side stay 3 is the same as that described in the embodiment 1.
  • the side stay fixing bolt 38 is screwed into the screw hole 37 of the L-shaped fixing member 35 so as to penetrate the through-holes 12 and 21 formed coaxially from the upper plate 10a toward the first metal-made bar 20.
  • the convex projection portion 36 of the vertical member 35a is fitted into the groove 22 of the first metal-made bar 20, and it functions to align the side stay insertion portion 31 and the horizontal member 35b of the L-shaped fixing member 35.
  • the insertion portion 31 of the side stay 3 is sandwiched between the metal-made bar 20 and the horizontal member 35b of the L-shaped fixing member 35 by the fixing bolt 38, so that the side stay 3 is firmly fixed to the frame main body 2.
  • the third metal-made bar 50 is disposed so as to be positioned below the horizontal member 35b as still another modified embodiment 2-1, as shown in Figure 13 .
  • an L-shaped fixing member 35A similar to the L-shaped fixing member 35 in the above embodiment 2 is used, but the L-shaped fixing member 35A is different from the L-shaped fixing member 35 regarding such a point that a projection portion 35b1 is formed on a lower face of the horizontal member 35b in the modified embodiment 2-1 so as to extend in a longitudinal direction (namely, in the longitudinal direction of the frame main body 2).
  • the whole configuration and function of the L-shaped fixing member 35A is similar to those the L-shaped fixing member 35 in the above embodiment 2.
  • the fixed third metal-made bar 50 is disposed so as to be positioned below the horizontal member 35b.
  • the third metal-made bar 50 is fixed to the both side plates 11 (11a, 11b) by rivets 51 penetrating the side faces thereof from the both side plates.
  • a recessed groove 52 having a shape fitted on the projection portion 35b1 formed on the lower face portion of the horizontal member 35b is formed on an upper face of the third metal-made bar 50 along a longitudinal direction (namely, in the longitudinal direction of the frame main body 2).
  • the insertion portion 31 of the side stay 3 is sandwiched between the first metal-made body 20 and the L-shaped fixing member 35A by the fixing bolt 38, so that side stay 3 is firmly fixed to the side end portion of the frame main body 2 in the same manner as described in the above embodiment 2.
  • the lower face projection portion 35b1 of the horizontal member 35b of the L-shaped fixing member 35A is fitted into the recessed groove 52 formed on an upper face of the third metal-made bar 50 fixed to the frame main body 2, and with this configuration, horizontal oscillation of the side stay 3 can be suppressed.
  • Figure 14 shows another embodiment of the side stay attaching part structure 60.
  • the second metal-made bar 40 is used as the movable fixing member.
  • a fixed second metal-made bar 42 is used instead of the movable second metal-made bar 40.
  • the configurations of the first metal-made bar 20 and the side stay 3 in the embodiment 1 are the same as described in the embodiment 1.
  • the second fixed metal-made bar 42 is fixed to the both side plates 11 (11a, 11b) by rivets 44 penetrating side faces of the second fixed metal-made bar 42 from the sides of the both side plates.
  • the remaining configuration of the second fixed metal-made bar 42 is similar to that of the second metal-made bar 40 in the embodiment 1.
  • slits 45 extending from the side end face of the frame main body 2 by a predetermined length are formed in the both side plates 11 (11a, 11b) of the frame main body 2 to be positioned between the first metal-made bar 20 and the second metal-made bar 42.
  • the length L45 of the slit 45 is preferably set longer than the lengths of the upper face and lower face fixing metal-bars 20 and 42 in the longitudinal direction by a length of 2 to 3 cm or more, and the width W45 of the slit 45 is set to about 1 to 2 mm.
  • the insertion portion 31 of the side stay 3 is plugged into the side face hollow portion between the first fixed metal-made bar 20 and the second fixed metal-made bar 42 of the frame main body 2.
  • the upper face convex projection 33 of the insertion portion 31 of the side stay 3 is fitted into the groove 22 of the metal-bar 20 and the side stay 3 is integrally attached to the side face of the frame main body 2.
  • a lower face of the side stay insertion portion 31 is caused to abut on the upper face of the second fixed metal-made bar 42.
  • the side stay fixing bolt 38 is screwed into the screw hole 43 of the second fixed metal-made bar 42 so as to penetrate the through-holes 12 and 21 from the upper plate 10a toward the metal-made bar 20 and further penetrate the U-shaped groove 32 of the side stay insertion portion 31.
  • the insertion portion 31 of the side stay 3 is sandwiched between the first metal-made bar 20 and the second metal-made bar 42 by the fixing bolt 38, and the side stay 3 is fixed to the frame main body 2 by screwing the fixing bolt 38 to the fixed metal-made 42 to fasten the fixing bolt 38.
  • attaching may be performed such that the side stay fixing bolt 38 is first inserted from the upper plate 10a toward the metal-made bar 20 to penetrate the through-holes 12 and 21 and is further screwed into the screw hole 43 of the second metal-made bar 42, and the side stay insertion portion 31 is then inserted such that the U-shaped groove 32 of the side stay insertion portion 31 is fitted to the screw shaft of the fixing bolt 38.
  • the side stay insertion portion 31 is sandwiched between the first metal-made bar 21 and the second metal-made bar 42 and the fixing bolt 38 is screwed and fastened to the fixed metal-made bar 42, since the slits 45 are formed in the both side plates 11 (11a, 11b), the both side plates 11 (11a, 11b) can be deformed slightly in the vertical direction. Thereby, the side stay insertion portion 31 is firmly fixed to the frame main body side portion.
  • Figure 15 shows another embodiment of the side stay attaching part structure 60.
  • the insertion portion 31 of the side stay 3 is sandwiched between the first metal-made bar 20 and the second metal-made bar 40 by the fixing bolt 38, and the side stay 3 is firmly fixed to the side end portion of the frame main body 2.
  • a moving metal-made bar for adjustment 20B is disposed so as to be positioned below a first metal-made bar 20A constituted in the same manner as the first metal-made bar 20 in the embodiment 1. That is, the first metal-made bar 20A is fixedly attached to the upper plate 10a by adhesive agent, but the moving metal-made bar for adjustment 20B is fixed to the upper plate 10a and the first metal-made bar 20A by a fixing bolt 55.
  • the recessed groove 22 is not formed on a lower face of the first metal-made bar 20A, but a recessed groove 22 engaged with the upper face convex projection 33 of the side stay insertion portion 31 is preferably formed on a lower face of the moving metal-made bar for adjustment 20B.
  • an attaching accuracy between the side stay 3 and the frame main body 2 is considerably important.
  • the thickness of the moving metal-made bar for adjustment 20B can be adjusted by sandwiching a shim (a thin metal plate for adjustment) or the like between the first metal-made bar 20A and the moving metal-made bar for adjustment 20B.
  • a shim a thin metal plate for adjustment
  • a plurality of moving metal-made bars for adjustments 20B different in thickness is prepared in advance so that a moving metal-made bar for adjustment 20 having a proper size is used properly.
  • thickness adjustment of the moving metal-made bar for adjustment 20B can be performed by using these metal-made bars for adjustment 20 in a combination fashion.
  • an opening portion 59 having an elongated oval shape can be formed in the both side plates 11 (11a, 11b) of the frame main body 2, or in one side plate 11 in a region corresponding to the first metal-made bar 20A by machining as a modified embodiment 4-1.
  • attaching of the first metal-made bar 20A, installation of a shim, or the like performed through the opening portion 59 can be performed simply with excellent workability, and working efficiency of assembling can be improved.
  • attaching accuracy between the side stay 3 and the frame main body 2 can be improved with a simpler structure.
  • Figure 17 shows another embodiment of the side stay attaching part structure 60.
  • the embodiment 5 is a modified embodiment of the above embodiment 4 shown in Figure 15 .
  • a second metal-made bar 40A similar to the second metal-made bar 40 in the embodiment 4 is used, but the second metal-made bar 40A in the embodiment 5 is different from the second metal-made bar 40 in the embodiment 4 regarding such a point that a projection portion 40A1 is formed on a lower face portion of the second metal-made bar 40A so as to extend in a longitudinal direction (namely, in the longitudinal direction of the frame main body 2).
  • the whole configuration and function of the second metal-made bar 40A are similar to those of the second metal-made bar 40 of the embodiment 4.
  • a fixed third metal-made bar 50 is provided so as to be positioned below the movable metal-made bar 40A.
  • the third metal-made bar 50 is fixed to the both side plates 11 (11a, 11b) by rivets 51 penetrating both faces thereof from the both side plates.
  • a recessed groove 52 having a shape fitted on the projection portion 40A1 formed on the lower face of the above second metal-made bar 40A is formed on an upper face of the third metal-made bar 50 along a longitudinal direction (namely, in the longitudinal direction of the frame main body 2).
  • the insertion portion 31 of the side stay 3 is sandwiched between the first metal-made bar 20A (the moving metal-made bar for adjustment 20B) and the second metal-made bar 40A by the fixing bolt 38 so that the side stay 3 is firmly fixed to the side end portion of the frame main body in the same manner as described in the embodiment 4.
  • the lower face projection portion 40A1 of the second metal-made bar 40A is fitted into the recessed groove 52 formed on the upper face of the third metal-made bar 50 fixed to the frame main body 2, and with this configuration, horizontal oscillation of the side stay 3 can be suppressed.
  • Figure 18 shows another embodiment of the side stay attaching part structure 60.
  • the embodiment 6 is a modified embodiment of the embodiment 4 shown in Figure 15 .
  • an L-shaped fixing member 35 is used as the second metal-made bar instead of the above movable metal-made bar 40 in the embodiment 4.
  • the L-shaped fixing member 35 of the embodiment 6 has a configuration similar to the L-shaped fixing member 35 in the embodiment 2 explained with reference to Figure 12 .
  • the L-shaped fixing member 35 is composed of a vertical member 35a and a horizontal member 35b, and a convex projection 36 with a predetermined length fitted into the groove 22 of the metal-made bar 20 is formed on an upper face of the vertical member 35a.
  • the horizontal member 35b is formed with a screw hole 37 screwed to the side say fixing bolt 38 in the vertical direction.
  • the horizontal member 35b functions as a nut member for the fixing bolt 38.
  • the configuration of the side stay 3 is the same as described in the embodiment 1.
  • the side stay fixing bolt 38 is first screwed into the screw hole 37 of the horizontal member 35b of the L-shaped fixing member 35 so as to penetrate the through-holes 12 and 21 formed coaxially from the upper plate 10a toward the first metal-made bar 20A.
  • the convex projection portion 36 of the vertical member 35a is fitted into the groove 22 of the moving metal-made bar for adjustment 20B, and it functions to align the side stay insertion portion 31 and the horizontal member 35b of the L-shaped fixing member 35 with each other.
  • the insertion portion 31 of the side stay 3 is sandwiched between the first metal-made bar 20A (the moving metal-made bar for adjustment 20B) and the horizontal member 35b of the L-shaped fixing member 35 by the fixing bolt 38, so that the side stay 3 is firmly fixed to the frame main body 2.
  • an opening portion 59 having an elongated oval shape can further be formed in the both side plates 11 (11a, 11b) of the frame main body 2, or in one side plate 11 in a region corresponding to the position of the first metal-made bar 20A by machining as a modified embodiment 6-1.
  • attaching of the first metal-made bar 20A, installation of a shim, or the like can be performed simply with excellent workability, and working efficiency of assembling can be improved.
  • attaching accuracy between the side stay 3 and the frame main body 2 can be improved with a simpler structure.
  • Figure 20 shows another embodiment of the side stay attaching part structure 60.
  • the embodiment 7 is a modified embodiment of the above embodiment 6 shown in Figure 18 .
  • a third metal-made bar 50 can be provided so as to be positioned below the horizontal member 35b.
  • a L-shaped fixing member 35A similar to the L-shaped fixing member 35 in the above embodiment 6 is used, but a horizontal member 35b in the embodiment 7 is different from the horizontal member 35 in the embodiment 6 regarding in such a point that a projection portion 35b1 is formed on a lower face of the horizontal member 35b so as to extend in a longitudinal direction (namely, the longitudinal direction of the frame main body 2).
  • the whole configuration and function of the L-shaped fixing member 35A are similar to those of the L-shaped fixing member 35 in the embodiment 6.
  • a fixed third metal-made bar 50 is provided to be positioned below the horizontal member 35b.
  • the third metal-made bar 50 is fixed to the both side plates 11 (11a, 11b) by rivets 51 penetrating side faces thereof from the both side plates.
  • a recessed groove 52 having a shape fitted on the projection portion 35b1 formed on the lower face portion of the horizontal member 35b is formed on an upper face of the third metal-made bar 50 along a longitudinal direction (namely, the longitudinal direction of the frame main body 2).
  • the insertion portion 31 of the side stay 3 is sandwiched between the moving metal-made bar for adjustment 20B and the horizontal member 35b of the L-shaped fixing member 35A by the fixing bolt 38, so that the side stay 3 is firmly fixed to the side end portion of the frame main body 2 in the same manner as described in the embodiment 6.
  • the lower face projection portion 35b1 of the L-shaped fixing member 35A is fitted in the recessed groove 52 formed on an upper face of the third metal-made bar 50 fixed to the frame main body 2, and with this configuration, horizontal oscillation of the side stay 3 can be suppressed.
  • an opening portion 59 having an elongated oval shape can further be formed in the both side plates 11 (11a, 11b) of the frame main body 2, or in one side plate 11 in a region corresponding to the position of the first metal-made bar 20A by machining like the modified embodiment 6-1 of the embodiment 6.
  • heald frame of a loom As described above, in the heald frame of a loom, it is demanded to achieve speed-up and vibration-isolating property of a loom by making a heald frame stave of carbon fiber reinforced composite material to achieve weight reduction and increase in rigidity. Of course, it is essential to achieve response to elongation and quality improvement.
  • a heald frame 1 (see Figure 1 ) constituted by coupling upper and lower heald frame staves (frame main bodies) 2 by using side frames 3, how to reduce vertical deflection constitutes a designing important point. Therefore, it is considered to use carbon fiber reinforced composite material with high elasticity concentrically at both end edge portions of each heald frame stave 2 in the vertical direction.
  • lateral ribs 10 (10a, 10b) made of CFRP (unidirectional carbon fiber reinforced composite material) having a UD shape and produced by directing long fibers in longitudinal directions thereof in a pulling manner are arranged at both end edge portions in a vertical direction of the hollow structure portion 2A of the heald frame stave 2 formed in a hollow structure is adopted.
  • CFRP unidirectional carbon fiber reinforced composite material
  • the present invention has a structure where a vertical sectional rigidity of the heald frame stave 2 determining vertical deflection can be obtained maximally with less material.
  • a heald or yarns to be weaved are hung from a lower end thereof and load is applied to the lower end. A point receiving the load becomes important. In order to minimize the vertical deflection, it is necessary to set the point receiving the load at a portion where the sectional rigidity of the heald frame stave 2 can be exerted fully.
  • the upper plate 10a serving as the lateral rib of the carbon fiber reinforced composite material extending in the longitudinal direction and positioned at the uppermost portion of the heald frame stave 2 to support these loads.
  • the metal-made bar 20 for transmitting a load to the side stay 3 directly is integrally attached to the upper plate 10a serving as the lateral rib by adhesive agent or the like, so that the sectional rigidity of the heald frame stave 2 can be exerted fully.
  • the side stay 3 serves to assemble the upper and lower heald frame staves 2 with a constant distance to keep accuracy of the assembling. If not, such a problem occurs that a width of the portion to be attached with the heald varies, so that it becomes impossible to attach the heald or the heald is broken during weaving in a loom.
  • a factor for determining the accuracy is the metal-made bars 20 caused to adhere to the upper portion of the heald frame stave 2.
  • the side stay 3 It is essential that attaching of the side stay 3 is performed with a predetermined accuracy and the accuracy does not fluctuate during serving. If a face for attachment of the side stay 3 is formed of carbon fiber reinforced composite material, the face fluctuates due to wearing, scratching, or the like for a long-term use because the face is constituted as a resin face, which results in occurrence of a drawback. Therefore, it is essential that the face for fixing the side stay 3 is a hard metal face which is hardly worn.
  • Securing of the accuracy at an attaching time of the metal-made bar 20 is achieved by performing adhesion at an adhering time sufficiently carefully, or by adopting a configuration where, for example, even if accuracy is poor, the problem of the poor accuracy is handled by working performed later.
  • the accuracy at the attaching time of the side stay 3 should be a distance for attaching the heald at the attaching time of the side stay 3, which is ⁇ 0.1 mm.
  • a function required in the heald frame 1 is strength, and it is important the heald frame 1 is not broken by a fastening force with the fixing bolt 38 for attaching the side stay 3 or a load acting on the heald in operation or a load from weaving yarns.
  • Both the loads act on the metal-made bar for fixation 20 caused to adhere to the lateral rib (upper plate) 10a made of carbon fiber reinforced composite material and extending in the longitudinal direction of the upper portion of the heald frame stave 2 attached with the side stay 3.
  • the fixing member (insertion portion 31) of the side stay 3 is sandwiched between the upper first metal-made bar 20 and the lower second metal-made bar 35, 40, or 42 and these members are tightened by the bolt 38.
  • a reaction force of the bolt 38 is received by the upper face (a lower face of the bolt head) of the carbon fiber reinforced composite material lateral rib (the upper plate) 10a positioned on the upper portion of the side stay stave.
  • a compression force identical to the fastening force with the bolt 38 act between the upper face of the carbon fiber reinforced composite material lateral rib (the upper plate) 10a and the first metal-made bar 20 caused to adhere to the lower face of the lateral rib 10a.
  • the compression force is received by the solid carbon fiber reinforced composite material lateral rib (upper plate) 10a and the first metal-made bar 20, an unbreakable structure is obtained.
  • the compression force is configured to be received by the side plates 11 (11a, 11b) made of a carbon fiber reinforced composite material and positioned on the side faces, the carbon fiber reinforced composite material is deformed or broken, so that sufficient force cannot be sustained.
  • a force for moving the heald frame vertically is inputted from the side stay fixing member (insertion portion 31) to the first metal-made bar 20 on the upper face side.
  • the force is a force for lifting up the heald attached to the heald frame stave 2, the tensions of weaving yarns or the like, and it is not so large.
  • the force is inputted into the carbon fiber reinforced composite material lateral rib (the upper plate) 10a extending in a lateral direction of the upper face of the heald frame stave 2 to be transmitted to the whole stave through the carbon fiber-reinforced composite material side plates 11 (11a, 11b) of the stave side face caused to adhere to the lateral rib (upper plate) 10a.
  • adhesion force between the carbon fiber reinforced composite material lateral rib (the upper plate) 10a extending in a lateral direction of the upper face of the heald frame stave and the side plates 11 (11a, 11b) made of the carbon fiber reinforced composite material positioned on the side face of the stave becomes essential. Therefore, in order to secure an adhesion area, it is necessary to set the thickness H2 of the lateral rib (lower plate) 11b as well as the thickness H1 of the carbon fiber reinforced composite material lateral rib (the upper plate) 11a to 5 mm or more.
  • fixing the first metal-made bar 20 on the upper face side by using the rivets 22 is for safety measures for preventing releasing of the adhesion for any reason.
  • a function required in the heald frame 1 is to secure a weaving speed.
  • heald frame stave 2 when the heald frame stave 2 is manufactured by using carbon fiber of general-purpose PAN-system carbon fiber (having tensile elasticity of 235 GPa or more) inexpensive in cost, sectional rigidity in a vertical direction equal to or more than that of the aluminum-made heald frame stave can be secured by adopting such a structure that the lateral ribs 10 (10a, 10b) having a width of 5 mm or more are arranged on upper and lower faces of the hollow structure portion 2A of the heald frame stave 2.
  • the lateral ribs 10 (10a, 10b) having a width of 5 mm or more are arranged on upper and lower faces of the hollow structure portion 2A of the heald frame stave 2.
  • the tensile elasticity and the density of a material to be used are important points to the primary natural frequency.
  • the primary natural frequency of the heald frame stave 2 of this invention becomes 1.6 times that of the aluminum-made heald frame stave, from which it is found that the primary natural frequency of the heald frame stave 2 of this invention is not problematic.
  • quietness is also required in the heald frame. In particular, recently, a demand of a heald frame with high quietness becomes higher in view of environmental issues in Europe.
  • the heald frame stave made of CPRF is a composite material with resin, it is a product having high quietness because the frame itself is low in resonating property.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Body Structure For Vehicles (AREA)
EP11848072.2A 2010-12-17 2011-12-16 Schaftrahmensprosse aus einem kohlefaserverstärkten verbundwerkstoff und anbringungsteilstruktur für eine seitenstütze Withdrawn EP2653594A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010282285A JP5769958B2 (ja) 2010-12-17 2010-12-17 サイドステー取付部構造
PCT/JP2011/079956 WO2012081735A1 (ja) 2010-12-17 2011-12-16 炭素繊維強化複合材製ヘルドフレームステーブ、及び、サイドステー取付部構造

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EP2653594A1 true EP2653594A1 (de) 2013-10-23
EP2653594A4 EP2653594A4 (de) 2018-02-21

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EP (1) EP2653594A4 (de)
JP (1) JP5769958B2 (de)
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WO2012081735A1 (ja) 2012-06-21
EP2653594A4 (de) 2018-02-21
CN103314146A (zh) 2013-09-18
JP5769958B2 (ja) 2015-08-26
CN103314146B (zh) 2016-06-29
JP2012127041A (ja) 2012-07-05

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