EP0294483A1 - Metier pour le tissage de la gaze ou similaire - Google Patents

Metier pour le tissage de la gaze ou similaire Download PDF

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Publication number
EP0294483A1
EP0294483A1 EP87905654A EP87905654A EP0294483A1 EP 0294483 A1 EP0294483 A1 EP 0294483A1 EP 87905654 A EP87905654 A EP 87905654A EP 87905654 A EP87905654 A EP 87905654A EP 0294483 A1 EP0294483 A1 EP 0294483A1
Authority
EP
European Patent Office
Prior art keywords
warp
yarn guide
guide members
yarns
fabric
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Withdrawn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
EP87905654A
Other languages
German (de)
English (en)
Other versions
EP0294483A4 (fr
Inventor
Kotaro Ono
Toshitaka Nakaya
Yoshitsugu Kobayashi
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.)
Nippon Mayer Co Ltd
Original Assignee
Nippon Mayer 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
Priority claimed from JP20402686A external-priority patent/JPS6366350A/ja
Priority claimed from JP27099486A external-priority patent/JPS63126950A/ja
Priority claimed from JP31114586A external-priority patent/JPS63175140A/ja
Priority claimed from JP16054087A external-priority patent/JPS646153A/ja
Application filed by Nippon Mayer Co Ltd filed Critical Nippon Mayer Co Ltd
Publication of EP0294483A4 publication Critical patent/EP0294483A4/fr
Publication of EP0294483A1 publication Critical patent/EP0294483A1/fr
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D41/00—Looms not otherwise provided for, e.g. for weaving chenille yarn; Details peculiar to these looms
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms

Definitions

  • the present invention relates to a weaving machine or a loom capable of laying at least one group of warp yarns travelling in the widthwise direction of a fabric, and more particularly to a weaving machine of the type above-mentioned including: a plurality of guide members extending in the widthwise direction of a fabric for guiding warp yarns, each of the guide members having a number of yarn guide pieces in the longitudinal direction thereof, at least one of the guide members being displaceable in the widthwise direction of the fabric; weft yarn inserting means for inserting weft yarns into a warp shedding formed by the relative movements in opposite directions of at least one of the guide members and another guide members; and a reed disposed in the widthwise direction of the fabric for beating the weft yarns inserted by the weft yarn inserting means, the reed having a number of blades in the longitudinal direction thereof.
  • the weaving machine having the arrangement above-mentioned is used for weaving a gauze fabric such as plain gauze, silk gauze, thin silk gauze, etc, and is known as disclosed by, for example, Japanese Utility Model Laid-Open Publication No. 54-158070.
  • this known weaving machine besides the ground warp yarns another warp yarns may be inserted in a zigzag manner. This enables to weave a fabric having varied patterns such as a tapestry fabric or a gauze fabric.
  • the weaving machine of this type does not use normal healds as means for forming a shedding of warp yarns, but use needles or yarn guide pieces provided in the tips thereof with bores for guiding tapestry warp yarns or gauze warp yarns.
  • a number of such yarn guide pieces are attached to each of needle bars or warp yarn guide members extending in the widthwise direction of a fabric.
  • the warp yarn guide members are reciprocatd above the ground warp yarns in the widthwise direction of the fabric.
  • Each of the yarn guide pieces is entered into each gap between adjacent two ground warp yarns and then lowered to form a shedding of the ground warp yarns and tapestry warp yarns or gauze warp yarns.
  • At least one warp yarn guide member needs to be moved in the widthwise direction of the fabric.
  • this warp yarn guide member is moved in the widthwise direction of the fabric, the blades of a reed for beating weft yarns to the weaving end of the fabric should be separated from a group of the warp yarn rows guided by this warp yarn guide member.
  • the reed blades need to enter again in the warp yarn rows.
  • each of the reed blades is not entered into each proper gap between adjacent two warp yarns, but is erroneously entered into the next gap to such proper gap. Such erroneous entry of the reed blades during a weaving operation results in failure to weave a fabric accurately according to the desired structure.
  • This weaving machine has only two warp yarn guide members, it cannot produce a fabric having a complicated structure. Further, this weaving machine is not provided with means for securely separating adjacent two warp yarns from each other.
  • the Japanese Patent Publication No- 50 - 7177 discloses a weaving machine provided with conventional normal healds, guides enabliing a portion of warp yarns to be movable in the weft direction, and Jacquard means for selecting the up/down movements of warp yarns.
  • This weaving machine is designed to weave a so-called gauze Jacquard fabric. Also, this weaving machine is merely able to lay only two groups of warp yarns and does not have means for securely separating adjacent two warp yarns from each other.
  • the object above-mentioned of the present invention is achieved to provide a weaving machine of the type described in [Field of the Art] and having the following arrangement.
  • a plurality of said another guide members are disposed and at least one of said another guide members is displaceable in the widthwise direction of a fabric.
  • the blades of the reed are arranged such that each blade is entered into each gap formed by adjacent two yarn guide pieces attached to the guide members, and after such entry of the blades, the blades beat weft yarns to the weaving end of a fabric while being moved along the warp yarns.
  • At least three groups of warp yarns are laid in a fabric, enabling to weave a fabric which is highly dense and/or has varied patterns. Further, each of the reed blades passes through each gap between adjacent two yarn guide pieces of the warp yarn guide members. Even though warp yarns are guided highly densely, adjacent two warp yarns are nither reduced in distance therebetween nor get caught in each other, in the blade insertion passage between adjacent two yarn guide pieces. This enables the blades to be properly inserted to prevent any occurrence of weaving errors.
  • each reed blade is entered into each gap between adjacent two yarn guide pieces of the warp yarn guide members.
  • each of the reed blades should be entered into each gap between adjacent two yarn guide pieces within a range covering the length of each yarn guide i piece or in the vicinity of the lower end thereof.
  • the reed blades are entered into such gaps within the range from the upper ends to the lower ends of the yarn guide pieces, or in the vicinity of and under the lower ends of the yarn guide pieces.
  • healds extending substantially horizontally to be also discussed later it is required that the reed blades are entered into such gaps within a range covering the vertical width of each heald or in the vicinity of and under the lower edge thereof.
  • both two groups of the warp yarn guide members are similar to guide bars used in a warp knitting machine, and the yarn guide pieces above-mentioned are in the form of bored guides attached to the guide bars.
  • the intersection and separation of the bored guides of two groups of warp yarn guide members form a shedding of warp yarns.
  • one of two groups of warp yarn guide members is similar to guide bars used in a warp knitting machine and has bored guides as the yarn guide pieces.
  • the guide members of the other group are of the heald bar type having bored healds.
  • the heald bars are displaceable in the widthwise direction of a fabric, enabling to weave a fabric having more diverse structures.
  • At least one of the warp yarn guide members of the guide bar type has yarn guide pieces which are individually displaceable in the widthwise direction of a fabric, enabling to weave a fabric having varied patterns.
  • warp yarn guide members of the heald bar type are disposed and a rapier device is held thereby. This eliminates special means for holding the rapier device.
  • weft yarns as translated are simultaneously inserted into an open gap formed by warp yarns throughout the width of a fabric, or weft yarns are inserted into a closed gap formed by warp yarns from one end to the other end of a fabric in the widthwise direction thereof.
  • a rapier device, a shuttle device, a water jet device or the like may be used as weft yarn inserting means.
  • a magazine weft yarn inserting device may be used.
  • Dependent on the desired patterns it is not always required to insert weft yarns into the open gap formed by warp yarns.
  • a pair of oval gears are disposed between the motor and the cam shaft such that the reed cams are increased in rotation angular velocity at the portions thereof at which the reed undergoes a great change in displacement. This enables the reed cams to be made in a gentle and smooth shape to assure smooth rotation of the reed cams.
  • Figure 1 to Figure 15 show a weaving machine in accordance with a first embodiment of the present invention, the weaving machine having warp yarn guide members similar to the guide bars used in a warp knitting machine;
  • a rapier device is shown in Figs. 1 and 2 only;
  • Figure 1 to Figure 9 show a weaving machine in accordance with a first embodiment of the present invention.
  • a warp yarn guide member group 10 has three long-size warp yarn guide members 12, 14, 16 supported diagonally downwardly by a C-shape hunger 22.
  • the warp yarn guide members have a shape similar to that of the guide bars used in a warp knitting machine, and extend vertically with respect to the drawing paper plane, i.e., in the widthwise direction of a fabric to be woven A.
  • Each warp-yarn guide member is provided at the lower end thereof through a block 18 with a plurality of yarn guide pieces 20, each provided in the tip thereof with a bore for guiding a warp yarn.
  • Three warp yarn groups a, b, c fed from warp yarn beams are guided by these warp yarn guide members 12, 14, 16, respectively.
  • the warp yarn groups a, b, c pass through'bores 21 in the respective yarn guide pieces 20 of the left-hand warp yarn guide member 12, the center warp yarn guide member 14 and the right-hand warp yarn guide member 16, respectively. These warp yarn groups a, b, c are then guided to a weaving end B under the bores 21. It is noted that, in the specification, the upper end of the woven part completed as the woven fabric A, i.e., the boundary between the woven fabric A and mere yarn portion, is called the weaving end B.
  • the other warp yarn guide member 30 is diagonally downwardly supported by another C-shape hunger 23 opposite to the C-shape hunger 22 such that the warp yarn guide member 30 forms a V shape together with the warp yarn guide members 12, 14, 16 with the lower portions of both warp yarn guide member groups coming nearer to each other.
  • the warp yarn guide members 12, 14, 16 the warp yarn guide member 30 extends in the widthwise direction of the woven fabric A, and is provided at the tip thereof through a block 32 with a plurality of needle-like yarn guide pieces 34.
  • One group of warp yarns d fed from warp yarn beams passes through bores in the yarn guide pieces 34 and is guided to the weaving end B.
  • the warp yarn guide members 12, 14, 16, and the warp yarn guide member 30 are reciprocated in opposite directions in the following manner.
  • a cam 46 is mounted on a cam shaft 45, and another cam 46' is coaxially mounted thereon behind the cam 46 (See Fig. 40).
  • a cam lever (not shown) which is similar to a cam lever 44 having cam rollers 47 and 47' in Fig. 1 and which is located behind the cam lever 44.
  • This cam lever acts on the cam 46' to transmit the displacement of the cam surface of the cam 46' to a connecting rod 28.
  • the vertical movement of the connecting rod 28 causes the hunger 23 to be swung around the shaft 24' through a lever 26.
  • a shaft 24 of the hunger 22 is operatively connected with the shaft 24' through transmission means such as gears (not shown). This causes the hunger 22 to be swung around the shaft 24.
  • the lower ends of the yarn guide pieces 20 and the lower ends of the yarn guide pieces 34 are linearly reciprocated horizontally in opposite directions (more exactly, these lower ends are moved in the form of a circular arc having a great radius of curvature around the shafts 24 and 24', respectively).
  • the yarn guide pieces 34 of the warp yarn guide member 30 are longer than the yarn guide pieces 20 such that the yarn guide pieces 34 completely intersect those three yarn guide pieces 20 of the respective warp yarn guide members 12, 14, 16 which are located in the same plane in parallel to the drawing paper plane.
  • One or more of the warp yarn guide members 12, 14, 16, 30 may be so arranged as to be reciprocated in a vertical direction with respect to the drawing paper plane, i.e., in the widthwise direction of the fabric.
  • Fig. 6 schematically shows an arrangement using the pattern chain. It is now supposed that the warp yarn guide member 12 is moved in the widthwise direction of a fabric.
  • Pattern chain links 90 are formed by connecting chain links 92 having different heights in an endless manner. The projecting and recessed uneven surface of the pattern chain links 90 forms a cam surface 93.
  • the pattern links 90 are engaged with a chain drum 91 disposed at one longitudinal end of the warp yarn guide member.
  • Each of the warp yarn guide members 12, 14, 16 and 30 has an upper body 86 and a lower body 88 suspended thereunder, the upper body 86 being slidably held by the hunger 22 or 23.
  • the lower body 88 is biased right in Fig. 6 by means such as a spring 94.
  • the pattern wheel may serve as a cam by providing the periphery of a disk with diametrically projecting and recessed portions. Such pattern wheel may work in the same manner as in the pattern chain 90.
  • electromagnectic means may be used for controlling the movement of the warp yarn guide members.
  • a portion of a rapier device 35 is shown in Figs. 1 and 2 only for simplication.
  • the rapier device 35 is supported by a C-shape lever 38, which is in turn rotatably supported by-a shaft 40 of which position is fixed.
  • the center curved portion of the lever 38 is connected to the cam lever 44 through a connecting rod 42, and is operatively connected with the cam 46 rotatable around the shaft 45.
  • a pair of cam rollers 47 and 47' are rotated as contacted with the outer and inner peripheries of the cam 46, thus serving as cam followers.
  • the rotation of the cam 46 causes the connecting rod 42 to be vertically moved through the cam roller 47. This causes the lever 38 to be swung around the shaft 40.
  • a fourth embodiment of the present invention shown in Figs. 36 to 38.
  • a reed 48 has a block 50 to which dents or blades 52 are attached.
  • the reed 48 is supported by a crank lever 54 through a reed beating bar 53.
  • the crank lever 54 has a base end connected to a cam lever 58 through a V-shape arm 60 and a connecting rod 62.
  • the mid-portion of the crank lever 54 is connected, through a connecting rod 56, to a cam lever (not shown) which is similar to the cam lever 58 and which is located behind the same.
  • connection points of all the members are rotatable.
  • the cam lever 58 is operatively connected with a cam 66 rotatable around a shaft 64.
  • Cam rollers 67 and 67' are similar to the cam rollers 47 and 47'.
  • the rotation of the cam 66 causes the rod 62 to be vertically moved. This causes the V-shape arm 60 to be swung around a shaft 70 of which position is fixed. By such swing, a horizontal swing component is transmitted to the crank lever 54 through a fulcrum pin 68. Further, the rotation of the cam 66' (See Fig. 40) behind the cam 66 causes the cam lever above-mentioned (not shown) to be rotated.
  • the warp yarn guide members 12, 14, 16, and the warp yarn guide member 30 respectively have the yarn guide pieces 20 and the yarn guide pieces 34 at the same pitch. These warp yarn guide members 12, 14, 16 and 30 are arranged such that each of the yarn guide pieces 34 is entered into each gap between adjacent two yarn guide pieces 20 when the warp yarn guide members 12, 14, 16 intersect the warp yarn guide member 30.
  • the reed 48 has the blades 52 _disposed at a pitch which is half the pitch for the yarn guide pieces 20 and 34. Each blade 52 is entered into each gap between adjacent two yarn guide pieces 20 and 34. This will be described later in connection with Figs. 7 to 9.
  • Guide rollers 81 are disposed in the vicinity of and under the weaving end B for pulling down the woven fabric A, and extend throughout the widthwise direction of the woven fabric A.
  • Guide rollers 84 are disposed for guiding the woven fabric A further downward.
  • each of the arrows shown in the vicinity of the warp yarn guide member group 10, the warp yarn guide member 30 and the reed 48 shows the direction in which the member concerned is adapted to be moved between the step shown in the drawing concerned and the next step.
  • the warp yarn guide member group 10 and the warp yarn guide member 30 are kept away from each other.
  • the warp yarns a, b, c guided by the warp yarn guide member group 10 form an open gap y together with the warp yarns d guided by the warp yarn guide member 3 0 .
  • a weft yarns f' is inserted into this gap y by a known device such as a magazine weft yarn inserting device, a rapier device, a water jet device.
  • the reed 48 is retreated left in Fig. 2.
  • the warp yarn guide member - group 10 and the warp yarn guide member 30 are moved in a direction toward each other to narrow the distances between the yarn guide pieces 20 and 34. This causes the weft yarn f to be held by and between the warp yarns a, b, c and the warp yarns d.
  • the reed 48 is advanced with each blade 52 entering each gap between adjacent two yarn guide pieces 20 and 34 at the lower ends thereof. Thereafter, the reed 48 is moved in the form of a circular arc and lowered down to the position shown by the alternate long and short dash lines, where the reed 48 beats the weft f to the weaving end B which is the upper end of the woven fabric A.
  • Figs. 7 to 9 show a positional relationship among the yarn guide pieces 20, the yarn guide pieces 34 and the reed blades 52 at the step shown in Fig. 3.
  • each of the reed blades 52 is entered into each gap between adjacent two yarn guide pieces.
  • each of the blades 52 is properly entered into each gap between adjacent two warp yarns (See the position of the reed 48 shown by the solid lines in Fig. 3).
  • Fig. 7 shows such state as seen from the lower right side in Fig. 3
  • Fig. 8 shows such state in diagram as also seen from the right side in Fig. 3.
  • each of the reed blades 52 is lowered while being positioned between adjacent two warp yarns. This eliminates the interlacement of adjacent yarns, assuring the separation thereof as shown in Fig. 9.
  • the leftmost-side yarn guide pieces of the warp yarn guide members 12, 14, 16 are designated as 201, and the next yarn guide pieces thereof on the right side as 20 2 and the further next yarn guide pieces thereof on the right side as 203.
  • the three leftmost-side yarn guide pieces 20 1 of the warp yarn guide members 12, 14, 16 are aligned with one another.
  • the next three yarn guide pieces on the right side 20 2 are aligned with one another, and the further next three yarn guide pieces on the right side 20 3 are also aligned with one another.
  • the left-end yarn guide piece 34 1 attached to the other warp yarn guide member 30 is positioned between the left-end yarn guide pieces 20 1 and the next yarn guide pieces on the right side 20 2 of the warp yarn guide members 12, 14, 16.
  • next yarn guide piece 34 2 of the warp yarn guide member 30 is positioned between adjacent two yarn guide pieces 2° 2 and 20 3 of the warp yarn guide members 12, 14, 16.
  • the further next yarn guide piece 34 3 of the warp yarn guide member 30 is positioned between adjacent two yarn guide pieces 20 3 and 20 4 of the warp yarn guide members 12, 14, 16.
  • the reed blades 52 are inserted into gaps between the yarn guide pieces 20 of the warp yarn guide members 12, 14, 16 and the yarn guide pieces 34 of the warp yarn guide member 30 which are adjacent to the yarn guide pieces 20.
  • the reed blades 52 1 is positioned between the yarn guide pieces 20 1 of the warp yarn guide members 12, 14, 16 and the yarn guide piece 34 1 of the warp yarn guide member 30.
  • the reed blade 52 1 is positioned between the yarn guide pieces 20 2 of the warp yarn guide members 12, 14, 16 and the yarn guide piece 34 1 of the warp yarn guide member 30.
  • the blade 52 2 is positioned between the yarn guide pieces 20 2 of the warp yarn guide members 12, 14, 16 and the yarn guide piece 34 2 of the warp yarn guide member 30.
  • the reed blade 52 2 is positioned between the yarn guide pieces 20 3 of the warp yarn guide members 12, 14, 16 and the yarn guide piece 34 2 of the warp yarn guide member 30.
  • the blade 52 3 is positioned between the yarn guide pieces 20 3 of the warp yarn guide members 12, 14, 16 and the yarn guide piece 34 3 of the warp yarn guide member 30.
  • Fig. 8 is a diagram of the state shown in Fig. 7, as seen from the right side thereof. It is noted that the adjacent blades 52 1 , 52 1' , 52 2 , 52 2 ' , 52 3 are alternately shown in the form of a rectangle and in the form of an oval for convenience of the description.
  • each of the portions represented by 20 1 , 20 2 and 20 3 represents three yarn guide pieces of the warp yarn guide members 12, 14, 16 which overlap one another in a vertical direction with respect to the drawing paper plane.
  • the yarn guide pieces of the warp yarn guide member 30 are positioned at the portions represented by 34 11 34 2 and 34 3 .
  • the warp yarns b 1 and c 1 are positioned behind the warp yarn a 1
  • the warp yarns b 2 and c 2 are positioned behind the warp yarn a 2
  • the warp yarns b 3 and c 3 are positioned behind the warp yarn a3.
  • each of the reed blades 52 is entered into each of the gaps between adjacent yarn guide pieces 20 and 34 of the warp yarn guide members 12, 14, 16 and the warp yarn guide member 30.
  • the blades 52 can be properly inserted into gaps between adjacent warp yarns a 1 and d 1 ; d 1 and a 2 ; a 2 and d 2 ; d 2 and a3; a3 and d 3'
  • the reed blades 52 1 , 52 1' , 52 2 , 52 2' , 52 3 are lowered while being held between the warp yarns a 1 and d 1 : d 1 and a 2 : a 2 and d 2 : d 2 and a3: a 3 and d 3 , respectively.
  • these blades are positioned as shown in Fig. 9.
  • the warp yarn d 1 which has been moved near to the warp yarn a 2 in Fig. 8
  • the reed blade 52 1 which has been lowered.
  • the warp yarn d 2 which has been moved near to the warp yarn a3 in Fig. 8, is separated therefrom in Fig. 9.
  • the warp yarn guide member group 10 and the warp yarn guide member 30 are continuously swung in a direction toward each other from the status shown in Fig. 3. As the result, they intersect each other in an X shape as shown in Fig. 4. Consequently, a closed gap x is formed by the warp yarns a, b, c and the warp yarns d.
  • a weft yarn f is inserted in the gap x by a known device such as a rapier device (not shown). At this time, the reed 48 has been already retreated left.
  • the warp yarn guide member group 10 and the warp yarn guide member 30 start moving in a direction away from each other.
  • the distances between the yarn guide pieces 20 and 34 are reduced such that the weft yarn f is held by and between the warp yarns a, b, c and the warp yarns d.
  • the blades 52 are entered into gaps between the yarn guide pieces 20 and 34 at the lower ends thereof, likewise in Fig. 3.
  • The.reed 48 as it is, is moved in the form of a circular arc and lowered to the position shown by the alternate long and short dash lines. This causes the weft yarn f to be beaten to the weaving end or upper end B of the woven fabric A.
  • the insertion of the weft yarn f into the open gap y may be omitted.
  • Figs. 10 to 12 show examples of a fabric woven with the weaving machine of the first embodiment.
  • the warp yarns respectively guided by the warp yarn guide members 12, 14, 16 and the warp yarn guide member 30 are represented by a, b, c and d likewise in Figs. 1 to 5.
  • Fig. 10 shows a fabric having a float pattern, in which the yarns c and d respectively guided by the guide members 16 and 30 are ground warp yarns, while the yarns a and b respectively guided by the guide members 12 and 14 are pattern warp yarns.
  • One or both of the guide members 16 and 30 are reciprocated in the widthwise direction of the fabric at a smaller stroke, and the ground warp yarns c and d are laid as shown in Fig. 10.
  • the guide members 12 and 14 are reciprocated in the widthwise direction of the fabric at a greater stroke, and the pattern warp yarns a and b are laid on the ground warp yarns c and d as shown in Fig. 10.
  • Fig. 11 shows a fabric having a sinkage pattern, in which the guide members 12 and 30 guide the ground warp yarns a and d, while the guide members 14 and 16 guide the pattern warp yarns b and c.
  • the guide members 12 and 3 0 are reciprocated at a smaller stroke, while the guide members 14 and 16 are reciprocated at a greater stroke.
  • the pattern warp yarns b and c are laid under the ground warp yarns a.
  • F ig. 12 shows a fabric having a float/sinkage combined pattern.
  • the guide members 14 and 30 guide the ground warp yarns b and d, while the guide members 12 and 16 guide the pattern warp yarns a and c.
  • One or both of the guide members 14 and 30 are reciprocated at a smaller stroke, while the guide members 12 and 16 are reciprocated at a greater stroke.
  • the pattern warp yarns a are laid on the ground warp yarns b and d, while the pattern warp yarns c are laid under the ground warp yarns b.
  • Figs. 13 to 15 are prepared for comparison in order to describe the advantages of the first embodiment of the present invention.
  • the reed 48 is not entered into the yarn guide pieces 20 and 34, but is entered into the warp yarns a, b, c at a position considerably lower than the position of the yarn guide pieces 20 (such low position is represented by D indicated by the alternate long and short dash lines).
  • the reed 48 is further lowered and entered into the warp yarns d immediately above the weaving end B (at the position represented by E indicated by the alternate long and short dash lines).
  • Fig. 14 is a diagram similar to Fig. 8, showing the state where the reed is located in the position D in Fig. 13, as seen from the right side thereof. This diagram shows a positional relationship among the yarn guide pieces 20, the yarn guide pieces 34 and the reed blades 52.
  • the blade 52 1 is entered between the warp yarns a 1 , b 1 , c 1 and the warp yarn d 1 .
  • the blade 52 1 is not actually entered between the warp yarn d 1 and the warp yarns a 2 , b 2 , c 2 as shown by the alternate long and short dash lines (phantom lines).
  • Fig. 15 is a diagram showing the state where the reed is lowered to the position E in Fig. 13, as seen from the right side in Fig. 13.
  • the blade 52 1 is entered into the warp yarn d 1 for the first time, but cannot be entered between the warp yarn d 1 and the warp yarns a 2 , b 2 , c 2 .
  • the warp yarn d 1 cannot be separated from the warp yarns a 2 , b 2 , c 2 .
  • the warp yarn d 2 cannot be separated from the warp yarns a3, b 3 , c 3 .
  • Figs. 16 to 23 show a weaving machine in accordance with a second embodiment of the present invention.
  • like parts are designated by like reference numerals used in the drawings for the first embodiment, added by 100.
  • the second embodiment is mainly different from the first embodiment in the following point.
  • both two groups of warp yarn guide members for forming a shedding of warp yarns are similar to the guide bars used in a warp knitting machine.
  • a substantially horizontal warp yarn guide member 172 is used instead of the warp yarn guide member 30 of the guide bar type in the first embodiment.
  • This warp yarn guide member 172 forms a shedding of warp yarns together with a warp yarn guide member group 110 similar to the warp yarn guide member group in the first embodiment.
  • warp yarns a, b, c guided by the warp yarn guide member group 110.
  • the warp yarn group a constitutes a first warp yarn group laid in the widthwise direction of a completed woven fabric A. Accordingly, a warp yarn guide member 112 for guiding the warp yarn group a is not moved in the widthwise direction of the woven fabric A, i.e., in the vertical direction with respect to the drawing paper plane (However, when the warp yarn guide member 112 guides warp yarns travelling in the widthwise direction of the fabric, the warp yarn guide member 112 is moved in the vertical direction with respect to the drawing paper plane).
  • the warp yarn group b is laid in an oblique direction of the woven fabric A.
  • the warp yarn group c is laid also in an oblique direction, but in a different direction from the oblique direction of the warp yarn group b. Accordingly, the warp yarn guide members 114 and 116 for guiding the warp yarn groups b and c respectively, are reciprocated in opposite directions in the widthwise direction of the woven fabric A.
  • the warp yarn guide member l14 is moved from this side of the drawing paper plane to the back side thereof, the other warp yarn guide member 116 is moved from the back side to this side.
  • the inventor calls the warp yarn guide member 172 a warp yarn guide member of the heald bar type.
  • the warp yarn guide member of the heald bar type 172 extends in the widthwise direction of the woven fabric A, and is provided at the tip thereof through a block 173 with a plurality of needle-like healds 174, each provided in the tip thereof with a guide bore.
  • the healds 174 are substantially horizontally disposed.
  • one warp yarn group d fed from warp beams passes through the bores in the healds 174 and is guided to the weaving end B.
  • the warp yarn group d guided by the warp yarn guide member of the heald bar type 172 constitutes a second warp yarn group laid in the weaving direction of the woven fabric.
  • the warp yarn guide member of the heald bar type 172 is supported by a C-shape lever 138 and adapted to be reciprocated substantially linearly in a horizontal direction through a mechanism completely equal to the rapier device 35 in the first embodiment (more exactly, the member 172 is reciprocated in the form of a circular arc having a great radius of curvature around a shaft 140). This causes each heald 174 to be advanced and retreated while passing through between adjacent two yarn guide pieces 20 of the warp yarn guide member group 110.
  • a magazine weft yarn inserting device is generally designated by the reference numeral 175.
  • this device is shown in Figs. 16 and 17 only.
  • endless chains 176 travel on both sides of the widthwise direction of the woven fabric A respectively, i.e., on this side and the back side of the drawing paper plane in respective planes parallel with the drawing plane.
  • the chains 176 are provided with engagement portions (not shown) for weft yarns f at predetermined spacial intervals.
  • a weft yarn f' having substantially the same length as the width of the woven fabric A is laid over and between each pair of opposite engagement portions of the chains 176 at a position (not shown) which is located in the right side in Fig. 17.
  • the weft yarn f' thus held in the widthwise direction of the woven fabric A is translationally moved with the advancement of the chains 176 in the direction shown by the arrow.
  • a sprocket 176 guides the chains 176.
  • the device 175 may be embodied in more detail according to the Japanese Patent Publication No. 45-16896 or 47-16868.
  • a stationary guide member 180 for the woven fabric A has a pair of long-size members opposite to each other with respect to a gap which allows the woven fabric A to pass therethrough. Likewise the warp yarn guide members, this guide member 180 extends throughout the widthwise direction of the woven fabric A.
  • the fabric guide member 180 is supported by a support member 182.
  • weft yarn inserting device 135 such as a shuttle device or a rapier device for inserting weft yarns from one end to the other end of the woven fabric A in the widthwise direction thereof.
  • Weft yarns to be inserted by this device 135 are generally designated by f.
  • each of the arrows indicated in the vicinity of the warp yarn guide member group 110, the warp yarn guide member of the heald bar type 172 and the reed 148 shows the direction in which the member concerned is moved between the step concerned and the next step.
  • Fig. 17 shows the warp yarn guide member group 110 of which clockwise swing around a shaft 124 has been finished.
  • Yarn guide pieces 20 attached to the tip of the warp yarn guide member group 110 are retreated to the leftmost or remotest position from the weaving end B.
  • the warp yarn guide member of the heald bar type 172 is retreated to the rightmost or remotest position from the weaving end B. Accordingly, the three warp yarn groups a, b, c guided by the warp yarn guide member group 110 form an open gap y together with the warp yarn group d guided by the warp yarn guide member of the heald bar type 172.
  • the gap y in the form of an inverted triangle is formed by those portions of the warp yarn groups a, b, c located between the yarn guide pieces 120 and the weaving end B and by that portion of the warp yarn group d located between the healds 174 and the weaving end B.
  • This gap y is opened since no warp yarn group is present at the bottom side of the triangle between the upper ends of the gap y.
  • the weft yarn f is brought into this open gap y through this upper opened portion by the magazine weft yarn inserting device 175.
  • the warp yarn guide member group 110 is moved slightly rightward and the warp yarn guide member of the heald bar type 172 is moved slightly leftward in close to the position right above the weaving end B. This reduces the width of the gap y formed by the warp yarn groups guided by both members 110 and 172.
  • the weft yarn f in the gap y is held by and between both warp yarn groups, and moved downward as pushed by the reed 148 which has been moved in the downwardly rightward direction from the position in Fig. 17 to the position right above the weaving end B.
  • the warp yarn guide member group 110 is continuously moved rightward, while the warp yarn guide member of the heald bar type 172 is continuously moved left. Consequently, the healds 174 pass through gaps of the yarn guide pieces 120 at the position right above the weaving end B, and the tips of the healds ' 174 project leftward with respect to the leftmost yarn guide pieces 120.
  • the gap X formed by the warp yarn groups in Figs. 17 and 18 is closed, causing the weft yarn f to be completely caught by the warp yarn groups.
  • the reed 148 is lowered to the position immediately above the weaving end B, causing the weft yarn f' to be pushed to the weaving end B.
  • a closed gap x is formed by the three warp yarn groups a, b, c guided by the warp yarn guide member group 110 and by the warp yarn group d guided by the warp yarn guide member of the heald bar type 172.
  • This gap x in the form of an inverted triangle is closed because that portion of the warp yarn group d which does not yet pass through the healds 174 is present at the bottom of the triangle exiting the upper end of the gap x.
  • Fig. 20 shows a weft yarn f inserted into this closed gap x from one end to the other end of a woven fabric A in the widthwise direction thereof, the weft yarn f being inserted by a weft yarn inserting device 135 such as a shuttle device or a rapier device.
  • a weft yarn inserting device 135 such as a shuttle device or a rapier device.
  • a shuttle device, a rapier device or the like passes on the reed 148 as guided thereby.
  • the reed 148 is retreated while being kept away from the weft yarn f by its upward movement in the left direction.
  • the healds 174 will be slightly retreated and the reed blades 152 will advance in the next step to the step shown in Fig. 20.
  • Fig. 21 the reed beating is completed, and the warp yarn guide member .group 110 and the warp yarn guide member of the heald bar type 172 start retreating left and right, respectively.
  • the weft yarn f is caught by one group of warp yarns a, b, c and the other group of warp yarns d which intersect each other.
  • the weft yarn f is positioned immediately above the weaving end B.
  • the warp yarn guide members 114 and 116 for guiding the intersecting oblique warp yarn groups b and c are continuously reciprocated in the widthwise direction of the woven fabric A, i.e., in the vertical direction with respect to the drawing paper plane.
  • both guide members 114 and 116 are moved in opposite directions. Such movement is carried out through a pattern chain or the like as mentioned earlier.
  • the timing in longitudinal movement of both guide members 114 and 116 should be such that, when the healds 174 are to be entered into gaps of the warp yarn guide members 112, 114, 116, each gap formed by adjacent two yarn guide pieces of one warp yarn guide member is aligned with each gap formed by the corresponding adjacent two yarn guide pieces of each of other two guide members, thereby to allow such entry of the healds 174.
  • the warp yarn guide member 112 is immovable in the widthwise direction of the fabric when weaving the woven fabric A shown in Figs. 23 and 24.
  • the warp yarn guide member of the heald bar type 172 and the reed 148 are always immovable.
  • one cycle of weaving operation is finished.
  • the fabric A is continuously woven and taken up by a take-up roller (not shown) through guide rolls 184.
  • the warp yarn guide member group 110 and the warp yarn guide member of the heald bar type 172 are reciprocated in opposite directions, causing the group 110 and the member 172 to be moved away from or toward each other.
  • one member may be secured while the other member may be reciprocated. This also enables the healds 174 to be relatively moved in directions away from and toward the yarn guide pieces 120 of the the warp yarn guide member group 110.
  • healds 174 pass through gaps of the yarn guide pieces and that the reed blades are entered between the healds and the yarn guide pieces.
  • the reed 148 carries out one beating for the weft f' during one cycle operation, but the reed 148 may carry out one beating for each of two weft yarns f and f'.
  • Figs. 23 and 24 show one example of the fabric A woven with the weaving machine of the second embodiment.
  • the warp yarns in the weaving direction include a first group of the warp yarns a and a second group of the warp yarns d which are alternately arranged.
  • the weft yarns include the weft yarns f inserted by a shuttle device, a rapier device or the like and the weft yarns f inserted by the magazine weft yarn inserting device which are alternately arranged.
  • the oblique yarns include the left-up yarns b and the right-up yarns c which intersect the yarns b.
  • the number of warp yarns of the fabric A in the widthwise direction is 56.
  • the fabric A in its entirety has an apparent density of 4 x 28 yarns/inch, or 112 yarns/inch.
  • the warp yarns b guided by the warp yarn guide member 114 are laid on the warp yarns a guided by the left-hand warp yarn guide member 112 in Fig. 16, and the warp yarns c guided by the right-hand warp yarn guide member 116 are laid on the warp yarns b. While guided by the healds 174, the second group of the warp yarns d is reciprocated left and right of the warp yarns a, b, c.
  • the warp yarns d are alternately laid on the warp yarns a, b, c and the weft yarns f' and under the weft yarns f.
  • the weft yarns f are laid on the warp yarns d, but laid under all other yarns.
  • the weft yarns f' are laid under the warp yarns d, but laid on all other yarns.
  • the warp yarn guide members 112, 114, 116 for guiding such yarns are changed in left-to-right directional order, the up-and-down relationship thereof may be accordingly chaged.
  • Fig. 23 shows, in an enlarged scale, a very fine portion of the fabric woven in the manner as above-mentioned.
  • each group of the oblique warp yarns b, c is shown as generally extended in the same direction, but actually laid in zigzags while being turned left and right, for example, in a width of about 1 cm (See Fig. 25 (1)).
  • the obliquely linear yarns are laid while being evenly turned left and right and continuously reciprocated throughout the length in the weaving direction.
  • any other regular or irregular arrangement as shown in Fig. 25 (2) to (5) may be adopted.
  • the warp yarns travelling-in the widthwise direction of the fabric may continuously travel in the widthwise direction of the fabric throughout the length in the weaving direction (See Figs. 25 (1) and (2)), or may travel in the widthwise direction of the fabric at portions in the weaving direction while extending linearly at other portions in the weaving direction (See Fig. 25 (3) to (5)).
  • the warp yarns may not be reciprocated evenly left and right in the widthwise direction of the fabric (See Fig.
  • warp yarns may travel in opposite directions as in the example above-mentioned, in the same direction or in an arbitrary manner without any regular relation.
  • the warp yarn guide member group and the warp yarn guide member of the heald bar type are reciprocated in opposite directions, causing both members to be moved away from and toward each other.
  • one member only may be reciprocated with the other secured, enabling the healds and guide needles to be relatively moved away from and toward each other.
  • the weft yarns are inserted into both open and closed gaps, but the weft yarns may be inserted into the closed gap only.
  • F ig. 26 is a weave structure design of another example of a fabric woven with the weaving machine of the second embodiment.
  • the weft yarns f' are not inserted into the open gap, and the weft yarns f are inserted into the closed gap only.
  • the yarns a and d represent the ground warp yarns, while the yarns b and c represent the pattern yarns.
  • the pattern warp yarns b, c may be woven in the fabric as shown in Fig. 26 by transversely moving the warp yarn guide members 114, 116 according to the height of the chain links, each time the weft yarn is beaten.
  • the ground warp yarns d are linearly woven by the warp yarn guide member of the heald bar type.
  • the fabric is woven as shown in Fig. 27.
  • Fig. 28 shows a substantial weave structure design of a fabric woven when the guide member l16 for guiding the warp yarns c is omitted or not operated.
  • warp yarns a and warp yarns d are relatively reciprocated by a transverse distance covering adjacent three warp yarns b.
  • a weft yarn f is beaten each time both warp yarns a, d are relatively moved by a distance covering adjacent two warp yarns b.
  • Warp yarns b are linearly extended.
  • the warp yarns are mutually combined in four directions to produce a dense structure.
  • Fig. 29 shows a variation of the weaving machine of the second embodiment.
  • like parts are designated by like reference numerals used in the second embodiment.
  • a warp yarn guide member of the heald bar type 172 is disposed slidably in the widthwise direction of a fabric.
  • a mounting bar 131 having a C-shape section is threadedly connected to a C-shape lever 138 at the upper end thereof, and a shaft 133 passes through the mounting bar 131 in the widthwise direction.
  • a slide bearing 137 is fitted in the shaft 133 in a manner slidable along the shaft 133.
  • the warp yarn guide member 172 is reciprocated in the directions shown by the arrows.
  • the warp yarn guide member of the heald bar type 172 has a base bar 143.
  • a rod 139 as reciprocating means is connected to a chain drum (not shown) by a spring 141, likewise in the the warp yarn guide member group 110.
  • chain links engaged on the chain drum By chain links engaged on the chain drum, .the amount of displacement of the rod 139 is determined.
  • the entering positions of the healds 174 into the yarn guide pieces can be freely determined.
  • electromagnetic means may be used likewise in the warp yarn guide members of the guide bar type 112, l14 and 116.
  • weft yarns may be beaten. This causes the yarns to intersect one another at more points, enabling to weave a more dense fabric.
  • Figs. 31 to 33 show a weaving machine in accordance with a third embodiment of the present invention.
  • like parts to those in the first embodiment are designated by the reference numerals used in the first embodiment, added by 200
  • like parts to those in the second embodiment are designated by the reference numerals used in the second embodiment, added by 100.
  • the third embodiment is basically similar to the second embodiment, but is characterized in that at least one warp yarn guide member of the guide bar type is arranged such that the yarn guide pieces thereof may be individually displaced to allow the warp yarn arrangement to be changed. More specifically, according to this third embodiment a number of yarn guide pieces out of those of said one warp yarn guide member may be individually selected and displaced right or left in the widthwise direction of a fabric.
  • the third embodiment employs a Jacquard guide bar 211 used in a warp knitting machine, as a warp yarn guide member for guiding ground warp yarns a.
  • the Jacquard guide bar 211 is provided at the lower end thereof with Jacquard guide needles or yarn guide pieces 225 which are dog-legged as shown in Fig. 31.
  • Dropper pins 219 vertically slidably mounted on a dropper bar 217 are selectively lowered to the Jacquard guide needles 225.
  • the resilient Jacquard guide needles 225 When the droppers pins 219 thus lowered are engaged with or disengaged from the Jacquard guide needles 225, the resilient Jacquard guide needles 225 are bent or not bent in the widthwise direction of a fabric (i.e., the Jacquard guide needles 225 may be held at their positions). With the movement of the Jacquard guide needles 225, the warp yarns a guided thereby are changed in arrangement (that is, the warp yarns a are displaced right or left in the widthwise direction of the fabric).
  • Such change in warp arrangement may be made through the fact that the dropper pins 219 are pulled up by a known Jacquard means (not shown) through connecting wire members 215 and are reset by a spring 213.
  • Fig. 32 shows a variation of the third embodiment employing two rows of Jacquard guide bars 211, 221 having Jacquard guide needles 225.
  • pattern warp yarns b may be woven into the ground structure of the warp yarns a and d according to the desired pattern arrangement.
  • Fig. 33 shows a further variation of the third embodiment, in which another warp yarn guide member is added to the arrangement in Fig. 32 at the back thereof.
  • the weaving machine having such addition enables to weave a variety of yarns such as warp insertion yarns, stretchable yarns, decorative yarns, etc.
  • warp yarn guide members may achieve to weave a fabric having a more complicated and fine pattern arrangement.
  • Figs. 34 and 35 respectively show a weave structure design and a substantial weave structure design of a fabric woven with the weaving machine having the arrangement in Fig. 31. This fabric is woven in the following manner.
  • Adjacent two warp yarns guided by adjacent two J acquard guide needles or yarn guide pieces 225 1 , 225 2 are represented by a 1 , a2.
  • Warp yarns guided by adjacent two healds are represented by d 1 , d 2'
  • the warp yarns a l are woven to the warp yarns d 1 , d 2 by operating the healds 274 with the droppers 219 made inoperative such that the operating positions of the Jacquard guide needles 225 remain unchanged.
  • the droppers 219 act on only the yarn guide piece 225 2 for guiding the warp yarn a 2 and the warp yarn a 2 is moved left in Fig.
  • the healds 174 are advanced to the warp yarns a 2 .
  • the warp yarns a 1 , a 2 are woven in the same warp yarn row.
  • the healds 274 are entered into the gaps of the warp yarn rows to carry out a weaving operation with the dropper pins 219 made inoperative likewise in the stage ⁇ .
  • the Jacquard guide needles 225 and the dropper pins 219 are generally moved right by one warp yarn row.
  • the warp yarn a l is moved left by one warp yarn row.
  • the healds 274 are advanced to the warp yarns a l .
  • the weaving operation made at the stage a is repeated.
  • the operations above-mentioned are repeated to form a base fabric.
  • the pattern warp yarns b, c are woven into this base fabric in amounts determined according to the desired pattern arrangement.
  • a gauze fabric with patterns can be woven.
  • Figs. 36 and 37 show a weaving machine in accordance with a fourth embodiment of the present invention.
  • like parts to those in the first embodiment are designated by like reference numerals used in the first embodiment, added by 300
  • like parts to those in the second embodiment are designated by like reference numerals used in the second embodiment, added by 200.
  • the fourth embodiment is basically similar to the second embodiment, but is characterized in that a rapier device is attached to a warp yarn guide member of the heald bar type, and this warp yarn guide member serves as a warp yarn guide member and as a rapier band guide member.
  • F ig. 36 is a schematic side view of the weaving machine provided with the rapier device, while Fig. 37 is a schematic front view illustrating how the rapier head travels.
  • the rapier device 335 is adapted to insert a weft yarn f into a closed gap x formed by a group of warp yarns a, b, c guided by a warp yarn guide member group 310 and by a group of warp yarns d guided by healds 374.
  • a guide member 336 lengthened in the widthwise direction of a fabric is threadedly mounted on a heald bar 372.
  • a plurality of guide pieces or hooks 349 are secured to the guide member 336 along the upper end thereof at spacial intervals.
  • lower guide pieces 351 are moved up such that the upper ends thereof are located in the positions corresponding to the level of the lower end edge of the band 361.
  • a suitable number of guide pieces 351 are cast in each of a plurality of blocks 363 which are mounted on a holding bar 369 by screws at spacial intervals.
  • the holding bar 369 is vertically movable through lifting/lowering means such as a cam (not shown).
  • the weft yarn f (Fig. 38) inserted by the rapier device is brought down to the position shown by the alternate long and short dash lines (Fig. 36) in the vicinity of a lower stationary guide bar 380, where the weft yarn f is laid in a fabric A.
  • healds 374 When healds 374 are advanced to form a closed gap x, the healds 374 are stopped at these positions and the guide pieces 351 are then moved up to form a guide passage together with the guide hooks 349.
  • the rapier band 361 passes through this guide passage (Fig. 36).
  • the guide pieces 351 are lowered and the warp yarn guide member of the heald bar type 372 is retreated.
  • the warp yarn guide member group 310 is moved in the direction opposite to the direction in which the warp yarn guide member of the heald bar type 372 is moved.
  • the reed 348 is lowered toward the upper end of the stationary fabric guide bar 380 to beat the weft yarn f (Fig. 38).
  • Another weft yarn may or may not be inserted into an open gap y by a magazine weft yarn inserting device.
  • Fig. 39 shows a variation of the fourth embodiment, in which a rapier band 361 having a rapier head 371 is reciprocated in a guide groove 383 formed in healds 374 at the undersides thereof.
  • the healds 374 also serve as guide members for guiding the rapier head 371, requiring no special rapier head guide members. This reduces the number of component elements required.
  • the rapier head 371 itself can be moved in a relatively large space in the closed gap x, minimizing the influence exerted upon the warp yarns. This is particularly advantageous when dense warp yarns are used.
  • Figs. 40 to 44 show a cam device for controlling the movement of the reed of the weaving machine in accordance with the present invention.
  • This cam device may be applied to all the embodiments of the present invention above-mentioned. The following description will discuss this reed cam device in connection with the first embodiment shown in Fig. 1.
  • the warp yarns a, b, c and the warp yarns d are respectively guided by the warp yarn guide members 12, 14, 16 and the warp yarn guide member 30.
  • the warp yarn guide members 12, 14, 16 and the warp yarn guide member 30 are respectively supported by the hungers 22 and 23 respectively mounted on the support shafts 24, 24'.
  • These members 12, 14, 16 and 30 are swung in opposite directions by the cam 46 at the lower portion of the weaving machine.
  • the warp yarns a, b, c and the warp yarns d form the closed gap x and the open gap y alternately.
  • the weft yarns f, f are inserted into these gaps x and y, and then beaten to the woven fabric A by the reed 48.
  • the reed 48 is moved in the circulating form shown by the arrow C.
  • This circulating movement C is a combined movement of a front-to-back reciprocation and a vertical reciprocation which are respectively driven by two reed cams 66 and 66' fitted on the cam shaft 64.
  • Such complicated movement needs to be carried out, even twice, within a range of 30% of the peripheral surfaces of the reed cams 66 and 66'.
  • the outer peripheral surfaces o of the reed cams 66 and 66' should be sharply curved as shown in Fig. 42 [1], Fig. 43 [1] and Fig. 44.
  • the inner peripheral surfaces i When the inner peripheral surfaces i are machined based on these outer peripheral surfaces o, the inner peripheral surfaces i have pointed portions p at the considerably curved portion thereof. In order to pass the cam rollers 67 and 67' at these portions p, it is unavoidable to provide gaps s between the cam inner peripheral surfaces i and the inner roller 67'.
  • F ig. 40 is a schematic transverse section view of an example of such reed cam device, while Fig. 41 is a section view taken along the line L-L in Fig. 41.
  • This reed cam device has a motor M, a gear box 79, a motor shaft 85 rotatably supported in the gear box 79, a cam shaft 45, and a cam 46 mounted on the cam shaft 45.
  • a drive shaft 87 is connected to the motor shaft 85 through bevel gears.
  • An intermediate shaft 89 supported by a bracket 95 is provided at one end thereof with an oval gear 97b meshed with an oval gear 97a mounted on the drive shaft 87, and at the other end thereof with a spur gear 99b meshed with a spur gear 99a mounted on a cam shaft 64.
  • the reed cams 66, 66' in Fig. 42 [I] and Fig. 43 [I] have the pointed portions p, whereas the cams 66, 66' used in the present invention in Fig. 42 [I I] and Fig. 43 [II] do not have such pointed portions p. That is, those portions of the cams 66, 66' in Fig. 42 [II] and Fig. 43 [II] corresponding to such pointed portions p have a greater center angle. Accordingly, the cams 66, 66' in Fig. 42 [II] and Fig.
  • Fig. 42 [I I] and Fig. 43 [II] may be provided with the inner and outer peripheral surfaces in the form of a moderate curved line along which the cam rollers smoothly follow, although such portions having the greater center angle impart a considerable cam displacement. More specifically, the cams in Fig. 42 [I I] and Fig. 43 [II] have a smooth surface, but may be rotated at a high angular velocity through the oval gears at their portions for controlling two reed beatings.
  • the reed cam device above-mentioned produces neither vibration nor noise, and assures smooth rotation of the reed cams. This enables the reed to beat the weft yarns based on the accurate displacement.
  • the cam device above-mentioned may also be useful when the weft yarns are not inserted into the open gap, or when one reed beating is carried out for one revolution of the main shaft. That is, even though reed beating is to be made once, this should be carried out within a range of about 30% of one revolution of the main shaft.
  • the weaving machine of the present invention may produce a woven fabric in which at least a portion of the warp yarns is displaced in the widthwise direction of the fabric, and which is highly dense and/or has varied patterns, such fabric being woven accurately according to the .desired structure without any weaving errors.

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

Abstract

Métier pour le tissage de la gaze ou similaire pouvant agencer au moins un groupe de chaînes se déplaçant dans une direction transvervale de tissage. Lorsqu'il existe au moins trois groupes de chaînes, il se peut que deux chaînes adjacentes s'emmêlent à cause de la densité élevée du montage des chaînes. Dans ce cas, le métier ci-décrit permet de séparer de manière fiable les chaînes emmêlées à l'aide d'un peigne. Une pluralité d'éléments de guidage de chaînes (12, 14, 16, 30), s'étendant dans la direction transversale de tissage, sont juxtaposés les uns aux autres et un grand nombre de plaques bec fil (20, 34) sont implantées dans chacun des organes de guidage (12, 14, 16, 30) dans le sens de la longueur. Le métier est équipé d'un organe d'introduction de trame permettant d'intercaler une trame (f') entre les chaînes (y) qui sont formées dans un état ouvert par le déplacement relatif et en sens inverse de l'un (30) au moins des organes de guidage (12, 14, 16, 30) par rapport à l'autre (12, 14, 16). Un peigne (48) servant à chasser la trame (f') intercalée par l'organe d'introduction de trame dans la partie de tissage est disposé dans le sens transversal de tissage. Un grand nombre de lames (52) sont montées dans le peigne (48) dans le sens longitudinal, de sorte que chaque lame (52) puisse s'introduire dans l'interstice formé par deux plaque bec fil (20, 34) montées sur les organes de guidage (12, 14, 16, 30) et, après que chaque lame s'est introduite dans un interstice, le peigne se déplace le long des chaînes (a, b, c, d) afin de chasser la trame (f') vers l'extrémité du tissage.
EP87905654A 1986-08-30 1987-08-27 Metier pour le tissage de la gaze ou similaire Withdrawn EP0294483A1 (fr)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP204026/86 1986-08-30
JP20402686A JPS6366350A (ja) 1986-08-30 1986-08-30 織機
JP270994/86 1986-11-13
JP27099486A JPS63126950A (ja) 1986-11-13 1986-11-13 織機
JP311145/86 1986-12-29
JP31114586A JPS63175140A (ja) 1986-12-29 1986-12-29 レピア装置を備えた織機
JP15942287 1987-06-25
JP159422/87 1987-06-25
JP160540/87 1987-06-27
JP16054087A JPS646153A (en) 1987-06-27 1987-06-27 Cam equipment in loom

Publications (2)

Publication Number Publication Date
EP0294483A4 EP0294483A4 (fr) 1988-12-01
EP0294483A1 true EP0294483A1 (fr) 1988-12-14

Family

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EP87905654A Withdrawn EP0294483A1 (fr) 1986-08-30 1987-08-27 Metier pour le tissage de la gaze ou similaire

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EP (1) EP0294483A1 (fr)
KR (1) KR880701798A (fr)
CN (1) CN87106007A (fr)
WO (1) WO1988001658A1 (fr)

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Publication number Priority date Publication date Assignee Title
CN105821554B (zh) * 2015-05-08 2017-05-10 湖州永昌丝绸有限公司 一种用于剑杆织机的绞综织造工艺及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321000A1 (fr) * 1975-08-11 1977-03-11 Barber Colman Co Machine et procede de tissage d'etoffes gaze a liage en diagonale
US4140156A (en) * 1976-10-06 1979-02-20 Barber-Colman Company Weft strand positioning at the exit end of the shed in a weaving machine
US4429722A (en) * 1981-05-18 1984-02-07 Quaker Fabric Corp. Method and apparatus for weaving fabrics of novel construction
DE3321733A1 (de) * 1983-06-16 1984-12-20 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Kettenwirkmaschine mit jacquard-lochnadeln

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507177B1 (fr) * 1966-07-22 1975-03-22
JPS53154268U (fr) * 1977-04-28 1978-12-04
JPS54158070U (fr) * 1978-04-26 1979-11-02

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2321000A1 (fr) * 1975-08-11 1977-03-11 Barber Colman Co Machine et procede de tissage d'etoffes gaze a liage en diagonale
US4140156A (en) * 1976-10-06 1979-02-20 Barber-Colman Company Weft strand positioning at the exit end of the shed in a weaving machine
US4429722A (en) * 1981-05-18 1984-02-07 Quaker Fabric Corp. Method and apparatus for weaving fabrics of novel construction
DE3321733A1 (de) * 1983-06-16 1984-12-20 Karl Mayer Textil-Maschinen-Fabrik Gmbh, 6053 Obertshausen Kettenwirkmaschine mit jacquard-lochnadeln

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8801658A1 *

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Publication number Publication date
WO1988001658A1 (fr) 1988-03-10
CN87106007A (zh) 1988-03-09
KR880701798A (ko) 1988-11-05
EP0294483A4 (fr) 1988-12-01

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