EP1065306B1 - Verfahren und Vorrichtung zur Fachbildungssteuerung in einer Webmaschine - Google Patents

Verfahren und Vorrichtung zur Fachbildungssteuerung in einer Webmaschine Download PDF

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Publication number
EP1065306B1
EP1065306B1 EP00105970A EP00105970A EP1065306B1 EP 1065306 B1 EP1065306 B1 EP 1065306B1 EP 00105970 A EP00105970 A EP 00105970A EP 00105970 A EP00105970 A EP 00105970A EP 1065306 B1 EP1065306 B1 EP 1065306B1
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EP
European Patent Office
Prior art keywords
shedding
pattern
heddle
curve
heddle frames
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.)
Expired - Lifetime
Application number
EP00105970A
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English (en)
French (fr)
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EP1065306A2 (de
EP1065306A3 (de
Inventor
Hiromasa c/o Kabushiki Kaisha Toyoda Sugiyama
Motoaki c/o Kabushiki Kaisha Toyoda Toda
Shigeru c/o Kabushiki Kaisha Toyoda Hara
Yukihiro c/o Kabushiki Kaisha Toyoda Tsuji
Hironobu c/o Kabushiki Kaisha Toyoda Abe
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Toyota Industries Corp
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Toyota Industries Corp
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Priority claimed from JP10771299A external-priority patent/JP4023028B2/ja
Application filed by Toyota Industries Corp filed Critical Toyota Industries Corp
Publication of EP1065306A2 publication Critical patent/EP1065306A2/de
Publication of EP1065306A3 publication Critical patent/EP1065306A3/de
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Publication of EP1065306B1 publication Critical patent/EP1065306B1/de
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C13/00—Shedding mechanisms not otherwise provided for
    • D03C13/02—Shedding mechanisms not otherwise provided for with independent drive motors
    • D03C13/025—Shedding mechanisms not otherwise provided for with independent drive motors with independent frame drives
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/14—Features common to dobbies of different types
    • D03C1/16—Arrangements of dobby in relation to loom
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/005—Independent drive motors
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/02—General arrangements of driving mechanism

Definitions

  • the present invention relates to a shedding control method and a shedding control apparatus in a weaving machine having a plurality of shedding drive motors provided independently of a weaving machine drive motor, and a plurality of heddle frames, each of the heddle frames corresponding to and driven by a single one of the shedding driving motors.
  • the handling state of warp associated with the shedding formation of the warp influences weft insertion performance of weft, and the handling state of the warp is influenced by tension on the warp. If the warp tension is small, it is likely to cause the warp entanglement and thus the warp handling is deteriorated. In the case where the warp handling is deteriorated, it is likely to cause the weft insertion error in a jet loom, and in the case of a rapier weaving machine, the running performance of a rapier head for transportation of the weft is deteriorated, and a ratio of cutting the warp with the rapier head is increased.
  • the handling state of the warp can be changed by modifying a shedding curves, as disclosed, for instance, in Japanese Patent Laid-open No. 7-34355.
  • heddle frames are driven by drive motors provided independently of a weaving machine drive motor, and the modification of the shedding curve is carried out to change a dowel (a stationary angle) or a shedding amount. If the dowel is increased, the tension on the warp from a closed position toward a maximum shedding position is rapidly increased, to provide the excellent warp handling. If the shedding amount is increased, the tension on the warp is increased, to provide the excellent warp handling.
  • EP 0 513 728 relates to a shedding controlling apparatus for a loom wherein each of a plurality of heald frames is driven by a drive motor for the exclusive use therefore.
  • the position instructing section produces an aimed amount of rotation
  • a position controlling section controls the drive motor to rotate in accordance with the aimed amount of rotation to eliminate a deviation thereof from a crank shaft of the loom to establish a synchronized relationship between them.
  • movement instructing means drives the drive motor by a predetermined amount of rotation by way of an OR gate and the position controlling section in accordance with a shedding pattern designated by way of shedding instructing means and shedding pattern instructing means so that a levelling operation of the heald frame, a pick finding operation and a starting preparing operation may be performed automatically.
  • An object of the present invention is to provide a shedding control method and a shedding control apparatus, each of which can attain the improved warp handling or effectively improve the textile quality.
  • a shedding control method is a method of controlling sheddings in a weaving machine having a plurality of shedding drive motors provided independently of a weaving machine drive motor, and a plurality of heddle frames, each of the heddle frames corresponding to and driven by a single one of the shedding driving motors, in which,
  • the weave information may include shedding patterns respectively corresponding to the plurality of heddle frames.
  • the weave information may include weft densities and shedding patterns respectively corresponding to said plurality of heddle frames.
  • At least two kinds of shedding curves distinguished one from the other by the magnitude of stationary angles may be prepared for the shedding curve to be set or selected.
  • a shedding control apparatus is an apparatus for controlling sheddings in a weaving machine having a plurality of shedding drive motors provided independently of a weaving machine drive motor, and a plurality of heddle frames, each of the heddle frames corresponding to and driven by a single one of the shedding driving motors, the shedding control apparatus including:
  • the weave information may include shedding patterns respectively corresponding to the plurality of heddle frames.
  • the weave information may include weft densities and shedding patterns respectively corresponding to said plurality of heddle frames.
  • the shedding curve setting means may select or set at least two kinds of shedding curves distinguished one from the other by the magnitude of stationary angles.
  • Reference symbol Mo designates a weaving machine drive motor, which can rotate reversibly and is operatively controlled by a weaving machine control computer Co.
  • Warps T1, T2, T3 and T4 are fed out from the warp beam 12 to be passed through a back roller 13, a tension roller 14, heddle frames 151, 152, 153 and 154 and a reed 16.
  • a woven cloth W is passed through an extension bar 17, a surface roller 18, a press roller 19 and a crease removing guide member 20 to be wound onto a cloth roller 21.
  • the surface roller 18 obtains a driving force from the weaving machine drive motor Mo to receive the woven cloth W in cooperation with the press roller 19, and the cloth roller 21 is linked with the surface roller 18.
  • the tension roller 14 is attached to one end portion of a tension lever 22, so that a predetermined tension to the warp T1, T2, T3 and T4 by the action of a tensile spring 23 attached to the other end portion of the tension lever 22.
  • the tension lever 22 is rotatably supported at one end of a detection lever 24, and the other end of the detection lever 24 is connected to a tension detecting unit 25.
  • the warp tension is transmitted through the tension roller 14, the tension lever 22 and the detection lever 24 to the tension detecting unit 25, and the tension detecting unit 25 outputs, to the weaving machine control computer Co, an electric signal in accordance with the warp tension.
  • the weaving machine control computer Co controls a rotational speed of the feed motor 11 based on a comparison of a preset tension with a detected tension indicated by this input signal as well as on a warp beam diameter indicated by a detection signal received from a rotary encoder 26 for detecting a rotational angle of the weaving machine. With this rotational speed control, the warp tension during a normal operation is controlled to prevent a weaving bar from generating during weaving.
  • shedding drive motor M1, M2, M3 and M4 are disposed below the heddle frames 151, 152, 153 and 154, respectively.
  • Crank discs 29 are securely attached to the output shafts 28 of the shedding drive motors M1, M2, M3 and M4, and the crank discs 29 are connected through connecting rods 30 to lower frames of the heddle frames 151, 152, 153 and 154, respectively.
  • the crank discs 29 and the connecting rods 30 constitute crank mechanisms, by which one-directional rotation of the shedding drive motors M1, M2, M3 and M4 are converted into vertical motion of the heddle frames 151, 152, 153 and 154, respectively.
  • the shedding drive motors M1, M2, M3 and M4 follow command control given by a shedding control device Cl.
  • the shedding control device Cl controls operation of the shedding drive motors M1, M2, M3 and M4 in synchronism with insertion of weft Y. As shown in Fig. 2, the weft Y is inserted into sheddings of the warps T1, T2, T3 and T4 by a weft insertion main nozzle 31.
  • the shedding control device Cl includes a shedding curve memory circuit 33 that stores therein six shedding curves E1, E2, E3, E4, E5 and E6 shown in Figs. 3a to 3f, a control circuit 34 that selects a shedding curve from the shedding curve memory circuit 33 and outputs a control command, and a drive circuit 35 that controls the shedding drive motors M1, M2, M3 and M4 based on the control command received from the control circuit 34.
  • the drive circuit 35 feed-back controls the shedding drive motors M1, M2, M3 and M4 based on rotational angle information obtained from rotary encoders 32 built into the shedding drive motors M1, M2, M3 and M4.
  • an axis ⁇ of abscissas represents a weaving machine rotational angle
  • an axis H of ordinates represents a height of the heddle frame.
  • the H1 represents the uppermost position
  • the H2 represents the lowermost position.
  • Each of the shedding curves E1, E2, E3, E4, E5 and E6 represents a part of shedding curves indicative of motion of the heddle frame 151, 152, 153 and 154, i.e. only for a time period where it is moved from one of the uppermost position and the lowermost position to the other.
  • the control circuit 34 is electrically connected to a weave information memory device 27.
  • the weave information memory device 27 stores weave information therein.
  • the weave information stored in the weave information memory device 27 includes shedding patterns of the respective heddle frames 151, 152, 153 and 154.
  • Fig. 4a represents a shedding pattern 1/1 of the heddle frame 151
  • Fig. 4b represents a shedding pattern 1/1 of the heddle frame 152
  • Fig. 4c represents a shedding pattern 2/2 of the heddle frame 153
  • Fig. 4d represents a shedding pattern 6/1 of the heddle frame 154
  • Fig. 4e is a sectional view of a cloth, showing an interweaving state of the warp T1 and the wefts Y corresponding to the shedding pattern 1/1 shown in Fig. 4a, and Fig.
  • FIG. 4f is a sectional view of a cloth, showing an interweaving state of the warp T2 and the wefts Y corresponding to the shedding pattern 1/1 shown in Fig. 4b.
  • Fig. 4g is a sectional view of a cloth, showing an interweaving state of the warp T3 and the wefts Y corresponding to the shedding pattern 2/2 shown in Fig. 4c
  • Fig. 4h is a sectional view of a cloth, showing an interweaving state of the warp T4 and the wefts Y corresponding to the shedding pattern 6/1 shown in Fig. 4d.
  • the weaving machine rotational angle detecting rotary encoder 26 is electrically connected to the control circuit 34.
  • the control circuit 34 retrieves the shedding pattern information for each of the heddle frames 151, 152, 153 and 154 from the weave information memory device 27 for every single rotation of the weaving machine on the basis of weaving machine rotational angle information obtained from the rotary encoder 26. Concurrently, the control circuit 34 retrieves the transitional pattern for each of the heddle frames 151, 152, 153 and 154 in the next one rotation of the weaving machine.
  • the control circuit 34 selects either one of the shedding curves E1 and E4. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 151 is the transitional pattern from the uppermost position to the lowermost position, the control circuit 34 selects the shedding curve E1 from the shedding curve memory circuit 33. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 151 is the transitional pattern from the lowermost position to the uppermost position, the control circuit 34 selects the shedding curve E4 from the shedding curve memory circuit 33.
  • the control circuit 34 selects either one of the shedding curves E1 and E4. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 152 is the transitional pattern from the uppermost position to the lowermost position, the control circuit 34 selects the shedding curve E1 from the shedding curve memory circuit 33. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 152 is the transitional pattern from the lowermost position to the uppermost position, the control circuit 34 selects the shedding curve E4 from the shedding curve memory circuit 33.
  • the control circuit 34 selects either one of the shedding curves E2 and E5. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 153 is the transitional pattern from the uppermost position to the lowermost position, the control circuit 34 selects the shedding curve E2 from the shedding curve memory circuit 33. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 153 is the transitional pattern from the lowermost position to the uppermost position, the control circuit 34 selects the shedding curve E5 from the shedding curve memory circuit 33.
  • the control circuit 34 selects either one of the shedding curves E3 and E6. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 154 is the transitional pattern from the uppermost position to the lowermost position, the control circuit 34 selects the shedding curve E3 from the shedding curve memory circuit 33. In the case where the next transitional pattern retrieved by the control circuit 34 from the weave information memory device 27 for the heddle frame 154 is the transitional pattern from the lowermost position to the uppermost position, the control circuit 34 selects the shedding curve E6 from the shedding curve memory circuit 33.
  • the control circuit 34 outputs control command to the drive circuit 35 so as to form the shedding curves selected from the shedding curve memory circuit 33.
  • the drive circuit 35 operates the drive motors M1, M2, M3 and M4 so that the heddle frames 151, 152, 153 and 154 respectively provide the shedding curves thus selected correspondingly.
  • each heddle frame 151, 152 is disposed within a range of a predetermined ratio ⁇ K ( ⁇ is, for instance, 3%) relative to the vertical stroke K of each heddle frame 151, 152 from the uppermost position, as shown in Figs. 3a and 3d.
  • This definition reflects stationary status of each heddle frames 151, 152, 153 and 154 at the uppermost and lowermost positions during weaving.
  • the disposition period ⁇ 1, ⁇ 2, ⁇ 3 are referred to as stationary angles at the uppermost position side
  • the disposition period ⁇ 1, ⁇ 2, ⁇ 3 are referred to as stationary angles at the lowermost position side.
  • formulae ⁇ 1 ⁇ ⁇ 2 ⁇ a3 « ⁇ 1 and ⁇ 1 ⁇ ⁇ 2 ⁇ ⁇ 3 stand in magnitude relationship.
  • a reference shedding curve memory circuit 36 of a shedding control device C2 stores therein the reference shedding curve E1 shown in Fig. 3a and the reference shedding curve E4 shown in Fig. 3b.
  • the control circuit 37 of the shedding control device C2 retrieves, for each of the heddle frames 151 to 158, the shedding pattern information included in the weave information stored in the weave information memory device 27 for every single rotation of the weaving machine on the basis of weaving machine rotational angle information obtained from the rotary encoder 26.
  • the control circuit 37 creates shedding curves from the reference shedding curves E4 and E1 on the basis of the shedding pattern information thus retrieved from the weave information memory device 27, and assigns thus created shedding curves respectively to the heddle frames 151 to 158.
  • the creation of the shedding curves are carried out such that the disposition periods ⁇ 11, ⁇ 12, ⁇ 11 and ⁇ 12 of the reference shedding curves E4 and E1 are changed.
  • Fig. 8 shows shedding patterns for the heddle frames 151 to 158.
  • the shedding patterns are repeated at sixteen rotation of the weaving machine as a unit cycle.
  • the 1/1 pattern corresponds to the shedding patterns shown in Figs. 4a and 4b
  • the 2/2 pattern corresponds to the shedding pattern shown in Fig. 4c.
  • the 6/1 pattern corresponds to the shedding pattern shown in Fig. 4d
  • the 1/6 pattern corresponds to a shedding pattern obtained by reversing the shedding pattern shown in Fig. 4d upside down.
  • each of the heddle frames 151 and 152 makes the motion of the 2/2 pattern for eight times worth of the weft insertion, the motion of the 1/1 pattern for four times worth of the weft insertion, and then the motion of the 2/2 pattern for four times worth of the weft insertion.
  • Each of the heddle frames 153 and 154 makes the motion of the 6/1 pattern for four times worth of the weft insertion, the motion of the 1/6 pattern for four times worth of the weft insertion, the motion of the 1/1 pattern for four times worth of the weft insertion, and then the motion of the 2/2 pattern for four times worth of the weft insertion.
  • Each of the heddle frames 155 and 156 makes the motion of the 1/6 pattern for four times worth of the weft insertion, the motion of the 6/1 pattern for four times worth of the weft insertion, the motion of the 1/1 pattern for four times worth of the weft insertion, and then the motion of the 2/2 pattern for four times worth of the weft insertion. All the motions made by the heddle frames 157, 158 are of the 1/1 pattern.
  • the control circuit 37 carries out such a setting that the reference shedding curves E4 and E1 are used as they are.
  • the control circuit 37 modifies the disposition periods ⁇ 11 and ⁇ 11 of the reference shedding curve E4 to be, for instance, ⁇ 21 and ⁇ 21 shown in Fig. 3e, as well as the disposition periods ⁇ 12 and ⁇ 12 of the reference shedding curve E1 to be, for instance, ⁇ 22 and ⁇ 22 shown in Fig. 3b, to thereby create and set the shedding curves E5 and E2 for use.
  • the control circuit 37 modifies the disposition periods ⁇ 11 and ⁇ 11 of the reference shedding curve E4 to be, for instance, ⁇ 31 and ⁇ 31 shown in Fig. 3f, as well as the disposition periods ⁇ 12 and ⁇ 12 of the reference shedding curve E1 to be, for instance, ⁇ 32 and ⁇ 32 shown in Fig. 3c, to thereby create and set the shedding curves E6 and E3 for use.
  • the control circuit 37 modifies the disposition periods ⁇ 11 and ⁇ 11 of the reference shedding curve E4 to be, for instance, ⁇ 41 and ⁇ 41 shown in Fig.
  • the symbol ⁇ (1/1) represents the stationary angle at the uppermost position side corresponding to the 1/1 pattern
  • the symbol ⁇ (1/1) represents the stationary angle at the lowermost position side corresponding to the 1/1 pattern
  • the symbol ⁇ (2/2) represents the stationary angle at the uppermost position side corresponding to the 2/2 pattern
  • the symbol ⁇ (2/2) represents the stationary angle at the lowermost position side corresponding to the 2/2 pattern.
  • the symbol ⁇ (6/1) represents the stationary angle at the uppermost position side corresponding to the 6/1 pattern
  • the symbol ⁇ (6/1) represents the stationary angle at the lowermost position side corresponding to the 6/1 pattern.
  • the symbol ⁇ (1/6) represents the stationary angle at the uppermost position side corresponding to the 1/6 pattern
  • the symbol ⁇ (1/6) represents the stationary angle at the lowermost position side corresponding to the 1/6 pattern.
  • the control circuit 37 recognizes next transitional pattern for each of the heddle frames on the basis of the shedding pattern information retrieved from the weave information memory device 27. Assuming for convenience of explanation that the shedding patterns for the heddle frames 151 to 158 are those shown in Fig. 8, in the case where the next transitional pattern for the heddle frame 151 to which the 2/2 pattern is assigned is the transitional pattern from the uppermost position to the lowermost position, the control circuit 37 creates and uses the shedding curve E2. In the case where the next transitional pattern for the heddle frame 151 to which the 2/2 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 creates and uses the reference shedding curve E5.
  • the control circuit 37 uses the reference shedding curve E1 as it is. In the case where the next transitional pattern for the heddle frame 151 to which the 1/1 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 uses the shedding curve E4 as it is. The similar setting of the shedding curve is carried out for the heddle frame 152.
  • the control circuit 37 creates and uses the shedding curve E3. In the case where the next transitional pattern for the heddle frame 153 to which the 6/1 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 creates and uses the shedding curve E6. In the case where the next transitional pattern for the heddle frame 153 to which the 1/6 pattern is assigned is the transitional pattern from the uppermost position to the lowermost position, the control circuit 37 creates and uses the shedding curve E11.
  • the control circuit 37 creates and uses the shedding curve E12. In the case where the next transitional pattern for the heddle frame 153 to which the 1/1 pattern is assigned is the transitional pattern from the uppermost position to the lowermost position, the control circuit 37 uses the shedding curve E1 as it is. In the case where the next transitional pattern for the heddle frame 153 to which the 1/1 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 uses the shedding curve E4 as it is.
  • the control circuit 37 creates and uses the shedding curve E2. In the case where the next transitional pattern for the heddle frame 153 to which the 2/2 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 creates and uses the shedding curve E5. The similar setting of the shedding curve is carried out for the heddle frame 154.
  • the control circuit 37 creates and uses the shedding curve E11. In the case where the next transitional pattern for the heddle frame 155 to which the 1/6 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 creates and uses the shedding curve E12. In the case where the next transitional pattern for the heddle frame 155 to which the 6/1 pattern is assigned is the transitional pattern from the uppermost position to the lowermost position, the control circuit 37 creates and uses the shedding curve E3.
  • the control circuit 37 creates and uses the shedding curve E6. In the case where the next transitional pattern for the heddle frame 155 to which the 1/1 pattern is assigned is the transitional pattern from the uppermost position to the lowermost position, the control circuit 37 uses the reference shedding curve E1 as it is. In the case where the next transitional pattern for the heddle frame 155 to which the 1/1 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 uses the reference shedding curve E4 as it is.
  • the control circuit 37 creates and uses the shedding curve E2. In the case where the next transitional pattern for the heddle frame 155 to which the 2/2 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 creates and uses the shedding curve E5. The similar setting of the shedding curve is carried out for the heddle frame 156.
  • the control circuit 37 uses the reference shedding curve E1 as it is. In the case where the next transitional pattern for the heddle frame 157 to which the 1/1 pattern is assigned is the transitional pattern from the lowermost position to the uppermost position, the control circuit 37 uses the reference shedding curve E4 as it is. The similar setting of the shedding curve is carried out for the heddle frame 158.
  • the control circuit 37 outputs control command to the drive circuit 35 so as to form the shedding curves thus set.
  • the drive circuit 35 operates the shedding drive motor M1 to M8 so that the heddle frames 151 to 158 establish the respective shedding curves set correspondingly thereto.
  • the respective shedding patterns of a plurality of the heddle frames 151 to 158 reflect the consumption amounts of the warps corresponding to the heddle frames 151 to 158.
  • the differences among the stationary angles based on the shedding patterns for the heddle frames 151 to 158 provide the differences in rapidness of the tension increases on the warps corresponding to the heddle frames 151 to 158 during the transition from the closed position to the uppermost or lowermost position, thereby preventing the loosening of the warp less consumed. Therefore, the handling of the warps is improved, and the insertion of the wefts is stabilized.
  • the warp handling can be enhanced by setting the shedding curves respectively for the heddle frames taking into account the stationary angles correspondingly to the shedding patterns, such that the shedding curve having the large stationary angle is prepared for the warp whose consumption amount is small, whereas the shedding curve having the small stationary angle is prepared for the warp whose consumption amount is large.
  • the structures of the apparatus in the fourth embodiment are the same as those in the third embodiment, but the control circuit 37 of the shedding control apparatus C2 in the fourth embodiment differs in function from that in the third embodiment.
  • the control circuit 37 in the fourth embodiment retrieves, for each of the heddle frames 151 to 158, the shedding pattern information included in the weave information stored in the weave information memory device 27 for every single rotation of the weaving machine on the basis of weaving machine rotational angle information obtained from the rotary encoder 26, and also retrieves weft density information included in the weave information.
  • the control circuit 37 in the fourth embodiment creates shedding curves from the reference shedding curves E4 and E1 on the basis of the thus retrieved shedding pattern information and weft density information, and assigns thus created shedding curves respectively to the heddle frames 151 to 158.
  • the creation of the shedding curves are carried out such that the disposition periods all, ⁇ 12, ⁇ 11 and ⁇ 12 of the reference shedding curves E4 and E1 are changed.
  • Other functions of the control circuit 37 in the fourth embodiment are the same as those in the first embodiment. In the example shown in Fig.
  • the weft density is set to ⁇ 1 for eight times worth of the weft insertion, ⁇ 2 for four times worth of the weft insertion, and then ⁇ 3 for four times worth of the weft insertion.
  • the densities ⁇ 1, ⁇ 2 and ⁇ 3 meet, for instance, a relationship of ⁇ 3 > ⁇ 1 > ⁇ 2.
  • the symbol ⁇ (2/2, ⁇ 1) represents the stationary angle at the uppermost position side corresponding to the 2/2 pattern and the weft density ⁇ 1
  • the symbol ⁇ (2/2, ⁇ 1) represents the stationary angle at the lowermost position side corresponding to the 2/2 pattern and the weft density ⁇ 1.
  • the symbol ⁇ (6/1, ⁇ 1) represents the stationary angle at the uppermost position side corresponding to the 6/1 pattern and the weft density ⁇ 1
  • the symbol ⁇ (6/1, ⁇ 1) represents the stationary angle at the lowermost position side corresponding to the 6/1 pattern and the weft density ⁇ 1.
  • the symbol ⁇ (1/6, ⁇ 1) represents the stationary angle at the uppermost position side corresponding to the 1/6 pattern and the weft density ⁇ 1
  • the symbol ⁇ (1/6, ⁇ 1) represents the stationary angle at the lowermost position side corresponding to the 1/6 pattern and the weft density ⁇ 1.
  • the symbol ⁇ (1/1, ⁇ 1) represents the stationary angle at the uppermost position side corresponding to the 1/1 pattern and the weft density ⁇ 1
  • the symbol ⁇ (1/1, ⁇ 1) represents the stationary angle at the lowermost position side corresponding to the 1/1 pattern and the weft density ⁇ 1.
  • the symbol ⁇ (1/1, ⁇ 2) represents the stationary angle at the uppermost position side corresponding to the 1/1 pattern and the weft density ⁇ 2 and the symbol ⁇ (1/1, ⁇ 2) represents the stationary angle at the lowermost position side corresponding to the 1/1 pattern and the weft density ⁇ 2.
  • the symbol ⁇ (2/2, ⁇ 3) represents the stationary angle at the uppermost position side corresponding to the 2/2 pattern and the weft density ⁇ 3, and the symbol ⁇ (2/2, ⁇ 3) represents the stationary angle at the lowermost position side corresponding to the 2/2 pattern and the weft density ⁇ 3.
  • the symbol ⁇ (1/1, ⁇ 3) represents the stationary angle at the uppermost position side corresponding to the 1/1 pattern and the weft density ⁇ 3, and the symbol ⁇ (1/1, ⁇ 3) represents the stationary angle at the lowermost position side corresponding to the 1/1 pattern and the weft density p3.
  • the warp T3 is smaller in consumption amount than each of the warps T1 and T2.
  • the difference in consumption amount between the warp T3 and each of the warps T1 and T2 becomes larger. That is, the weft density influences the consumption amount of the warp.
  • the example shown in Fig. 9 carries out such a setting that the stationary angles meet, for instance, a relationship of ⁇ (1/1, ⁇ 2) > ⁇ (1/1, ⁇ 1) > ⁇ (1/1, ⁇ 3).
  • the setting of the shedding curves respectively for the heddle frames taking into account the shedding patterns and the weft densities effectively improves the warp handling.
  • shedding curves are selected or set respectively for a plurality of heddle frames in accordance with weave information, and operation of shedding drive motors driving the heddle frames correspondingly to the respective shedding curves thus selected or set are controlled to provide the thus selected or set shedding curves. Therefore, it is possible to effectively improve the warp handling and the textile quality.

Claims (6)

  1. Verfahren zum Steuern von Fachbildungen in einer Webmaschine mit einer Vielzahl von Fachbildungs-Antriebsmotoren, die unabhängig von einem Webmaschinen-Antriebsmotor vorgesehen sind, und einer Vielzahl von Einzugsrahmen, wobei jeder der Einzugsrahmen einem einzelnen der Fachbildungs-Antriebsmotoren entspricht und durch ihn angetrieben wird,
    wobei eine Fachbildungskurve, die eine Bewegung von einem Einzugsrahmen für eine Zeitperiode anzeigt, in welcher er von einer der obersten Position und der untersten Position zur anderen bewegt wird, für jeden der Vielzahl von Einzugsrahmen unabhängig ausgewählt oder eingestellt wird, und zwar auf der Basis von Webinformation, dadurch gekennzeichnet, dass die Webinformation eine Gewebedichte enthält, und wobei die jeweiligen Fachbildungskurven für die Einzugsrahmen unter Berücksichtigung von stationären Winkeln ausgewählt oder eingestellt werden, und
    dass jeder der Fachbildungs-Antriebsmotoren antriebsmäßig gesteuert wird, um zu veranlassen, dass einer der Vielzahl von Einzugsrahmen eine Bewegung entlang der so eingestellten oder ausgewählten Fachbildungskurve durchführt.
  2. Fachbildungs-Steuerverfahren bei einer Webmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Webinformation Fachbildungsmuster enthält, die jeweils der Vielzahl von Einzugsrahmen entsprechen.
  3. Fachbildungs-Steuerverfahren bei einer Webmaschine nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass wenigstens zwei Arten von Fachbildungskurven, die durch die Größe von stationären Winkeln voneinander unterschiedlich sind, im Voraus für die Fachbildungskurve vorbereitet werden, die einzustellen oder auszuwählen ist.
  4. Vorrichtung zum Steuern von Fachbildungen in einer Webmaschine mit einer Vielzahl von Fachbildungs-Antriebsmotoren, die unabhängig von einem Webmaschinen-Antriebsmotor vorgesehen sind, und einer Vielzahl von Einzugsrahmen, wobei jeder der Einzugsrahmen einem jeweiligen einzelnen der Fachbildungs-Antriebsmotoren entspricht und durch diesen angetrieben wird, wobei die Fachbildungs-Steuervorrichtung folgendes aufweist:
    eine Fachbildungskurven-Einstelleinrichtung zum Speichern von Fachbildungskurven, die eine Bewegung der Einzugsrahmen anzeigt, darin und zum Auswählen oder Einstellen aus den Fachbildungskurven von einer Fachbildungskurve, die eine Bewegung von einem Einzugsrahmen für eine Zeitperiode anzeigt, bei welcher er von einer der obersten Position und der untersten Position zur anderen bewegt wird, für jeden der Vielzahl von Einzugsrahmen unabhängig auf der Basis von Webinformation, dadurch gekennzeichnet, dass die Webinformation eine Gewebedichte enthält, die dort hinein von außen eingegeben ist, und wobei die jeweiligen Fachbildungskurven für die Einzugsrahmen unter Berücksichtigung von stationären Winkeln ausgewählt oder eingestellt werden; und wobei die Fachbildungs-Steuervorrichtung weiterhin folgendes aufweist:
    eine Steuereinrichtung zum antriebsmäßigen Steuern von jedem der Fachbildungs-Antriebsmotoren, um zu veranlassen, dass ein jeweiliger der Vielzahl von Einzugsrahmen eine Bewegung entlang der durch die Fachbildungskurven-Einstelleinrichtung so eingestellten oder ausgewählten Fachbildungskurve durchführt.
  5. Fachbildungs-Steuervorrichtung.in einer Webmaschine nach Anspruch 4, dadurch gekennzeichnet, dass die Webinformation Fachbildungsmuster enthält, die jeweils der Vielzahl von Einzugsrahmen entsprechen.
  6. Fachbildungs-Steuervorrichtung in einer Webmaschine nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Fachbildungskurven-Einstelleinrichtung wenigstens zwei Arten von Fachbildungskurven auswählt, die durch die Größe von stationären Winkeln voneinander unterschiedlich sind.
EP00105970A 1999-04-15 2000-03-24 Verfahren und Vorrichtung zur Fachbildungssteuerung in einer Webmaschine Expired - Lifetime EP1065306B1 (de)

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CN101089269B (zh) * 2006-06-16 2011-06-08 施托布利法韦日公司 用于形成提花型梭口的装置、装有此装置的织机及在此织机上形成所述梭口的方法

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EP1620588B2 (de) 2003-04-17 2016-10-05 Picanol Verfahren zum betreiben einer webmaschine
JP4008384B2 (ja) * 2003-06-13 2007-11-14 津田駒工業株式会社 織機の開口制御方法及び装置
JP4721400B2 (ja) * 2004-10-25 2011-07-13 津田駒工業株式会社 織機の電動開口装置
JP2007009355A (ja) * 2005-06-29 2007-01-18 Tsudakoma Corp 織機の電動開口装置
FR2956414B1 (fr) * 2010-02-12 2012-03-16 Staubli Sa Ets Procede de commande des actionneurs electriques d'un dispositif de formation de la foule
DE102011006368B3 (de) * 2011-03-29 2012-02-16 Lindauer Dornier Gesellschaft Mit Beschränkter Haftung Verfahren und Webmaschine zur Webfachbildung
JP6269587B2 (ja) * 2015-06-15 2018-01-31 株式会社豊田自動織機 パイル織機におけるパイル経糸の開口制御方法

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JP3242123B2 (ja) * 1991-05-13 2001-12-25 津田駒工業株式会社 織機の開口制御装置
JP3375256B2 (ja) * 1995-10-18 2003-02-10 津田駒工業株式会社 開口制御方法および開口制御装置
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* Cited by examiner, † Cited by third party
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CN101089269B (zh) * 2006-06-16 2011-06-08 施托布利法韦日公司 用于形成提花型梭口的装置、装有此装置的织机及在此织机上形成所述梭口的方法

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