EP0144678A1 - Procédé et dispositif pour diviser le harnais d'un métier Jacquard - Google Patents

Procédé et dispositif pour diviser le harnais d'un métier Jacquard Download PDF

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Publication number
EP0144678A1
EP0144678A1 EP84112815A EP84112815A EP0144678A1 EP 0144678 A1 EP0144678 A1 EP 0144678A1 EP 84112815 A EP84112815 A EP 84112815A EP 84112815 A EP84112815 A EP 84112815A EP 0144678 A1 EP0144678 A1 EP 0144678A1
Authority
EP
European Patent Office
Prior art keywords
harness
rows
boards
board
holes
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Withdrawn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
EP84112815A
Other languages
German (de)
English (en)
Inventor
Werner Busch
Hans Brocks
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.)
VERSEIDAG-KRAWATTENSTOFFE GmbH
Original Assignee
VERSEIDAG-KRAWATTENSTOFFE GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VERSEIDAG-KRAWATTENSTOFFE GmbH filed Critical VERSEIDAG-KRAWATTENSTOFFE GmbH
Publication of EP0144678A1 publication Critical patent/EP0144678A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • D03C3/40—Constructions of lifting-cords

Definitions

  • the invention relates to a method for rumbling the harness of a jacquard weaving machine, in which part of the boards connected to the harness are shut down or put back into operation, and an apparatus for carrying out the method.
  • the disused or inactive harness cords hinder the weaving process, because they are caught by the active harness cords due to the density of the harness and thus lead to tangles, weaving errors and premature wear.
  • the invention has for its object to provide a method of the type specified so that a ver Changed chain setting can be made quickly, easily and thus inexpensively without the weaving process being impeded.
  • the armor is divided into groups that correspond to the rows of boards, and at least one of the rows of boards is shut down or put back into operation.
  • the division of the harness and board arrangement according to a figure of eight or a sequence of six ensures optimal working on the weaving machine, since this division is widely used in jacquard technology.
  • the harness cords are designed differently according to the division into rows.
  • Fig. 1 with P1 to P 16 rows of boards are indicated.
  • the boards of a row work together with a knife M 1 ... M 16 , the knives being arranged in a knife box in a known manner.
  • jacquard needles are indicated, which interact in a manner known per se with a jacquard card running over a prism (not shown), the perforation of which specifies the pattern to be woven.
  • the spring-loaded jacquard needles 20 are adjusted in the horizontal direction in accordance with the perforation of the jacquard card, individual plates being pivoted out of the stroke range of the knives M 1 ... M 16 in accordance with the specified pattern.
  • the knives are raised and lowered in accordance with the machine cycle, the blanks specified by the pattern to be woven being carried along by the knives, while the other blanks, which have been pivoted out of the stroke range of the knives by the jacquard needles 20, remain stationary in the vertical direction.
  • the boards P 1 to P 16 are arranged above a board base 21 which is provided with corresponding bores.
  • the individual boards are connected with harness cords 22 which extend downward from the board bottom 21 to a choir board 23 in which bores 24 are formed in accordance with the number of harness cords.
  • the harness cords 22 running through the choir board 23 are provided with eyelets (strands) 25 for receiving the warp threads (not shown) of the fabric to be woven. So that the harness cords 22 are kept taut and, when the knives are descending, are moved down together with the sinkers, rubber springs or jacquard weights, not shown, are attached to the lower end of the harness cords. This structure is known per se in a jacquard weaving machine.
  • the invention assumes a maximum number of sinkers that are used for Reducing the warp thread density in jumps.
  • the warp thread density is correspondingly reduced by the reduced number of sinkers in operation, but the pattern repeat width is not changed by the design and arrangement of the sinkers that are taken out of operation.
  • a jacquard machine with 1344 sinkers is provided. Of these, 1280 boards for weaving are covered with harness cords. There are 16 rows of boards, as shown in Fig. 1, each row of boards having 80 boards.
  • the rumor order is interpreted in such a way that it occurs in an eight or sixth rhythm. As a figure of eight or sixteenth order often recurs in jacquard technology, this makes it optimal work guaranteed wisely.
  • Fig. 2 shows a schematic representation of the rumor order. If all 16 rows of sinkers with 80 sinkers are in operation, the total number of sinkers (machine repeat) is 1280 and the warp thread density is 128 warp threads / cm. This represents the maximum warp thread density. If a fabric with a lower warp thread density is to be produced, the first two rows of sinkers are put out of operation, leaving 1120 sinkers. are available which result in a warp thread density of 112 warp threads / cm on the fabric to be produced.
  • the sinkers of the first two knives M1 and M2 are controlled by the jacquard hole card in such a way that they cannot either be grasped by the knives M1 and M2, or they are locked in the raised position. Now only the boards of knives M3 to M16 are used. If a warp thread density of 128 warp threads / cm is required again, the sinkers of the rows P 1 and P 2 can be controlled again or hooked into the knives.
  • the pattern repeat width is not reduced by the reduction in the warp thread density.
  • FIG. 2 shows the further stages of the rumor order with a reduction in the warp thread density. This leaves a sinker number of 960 and a warp thread density of 96 warp threads / cm when the sinkers of the rows P 1 to P 4 are shut down. Up to row P 12 , the warp density is reduced in increments of 16, while from row P 13 to P 16 the warp density is reduced in increments of 8 by only stopping one of the rows P 13 to P 1 6.
  • the chorus board 23 has a greater depth than usual, so that the Rows of boards P 1 to P 16 corresponding rows of holes 24 in the choir board can have a greater distance from each other. This increases the distance between the harness cords in the harness.
  • Fig. 1 shows an embodiment of the harness, in which a row of boards P 1 corresponds to two rows of holes 24 in the choir board, with every second harness cord 22 of a row of boards P 1 ... P 16 running through a hole 24 'in the choir board 23 which is offset from the two closest bores 24, as shown in FIG. 1 by means of the board row P 16 with associated bores 24, 24 'in the choreboard 23.
  • the harness cords 22 forming a total of four rows are put out of operation, which in the illustration according to FIG. 1 run through the first four holes 24 in the choir board 23 (left side).
  • Markings 26 on the choir board indicate the parting planes of the urine that result when the board rows P 1 to P 16 shown in FIG. 2 are stopped between active and inactive harness cords. For example, after stopping the rows P1 to P 15, only the row P 16 with a total number of sinkers of 80 and a warp thread density of 8 warp threads / cm would be in operation, only the harness cords 22 provided with eyelets 25 and those through the holes 24 and 24 'indicated in the choir board further harness cords assigned to the board row P 16 would be active.
  • the harness cords which become inactive due to each rumbling jump are visually identified, for example by a different coloring.
  • the harness cords 22 corresponding to the board rows p 1 and P 2 can be colored red
  • the harness cords corresponding to the next rumble jump and assigned to the board rows P 3 and P 4 can be colored blue, and so on. Due to the reduced rumble jump from the board row P 13 to eight, only the harness cords that are assigned to a board row P13 ... P16 are colored differently.
  • the larger choir width with a greater distance between the bores 24 on the choir board 23 results in a wide guidance of the harness with a correspondingly reduced friction between the harness cords.
  • the distances between the rows of harness cords, the parting plane of which is indicated at 26 in FIG. 1, are expediently made larger than the distances between the bores 24 within a row, in order to ensure minimal friction between active and inactive harness cords.
  • a wide and frictionless guidance of the urine is supported by the staggered arrangement of the bores 24 and 24 'of a series of harness cords, as shown in FIG. 1.
  • the markings 26 in FIG. 1 between the individual rumor blocks each indicate an empty row between the rumor blocks, an empty row corresponding to a missing or unoccupied row of holes.
  • a shutdown of the circuit boards is provided.
  • an open harness is used, in which the card case is arranged above the warp.
  • the card case can also be arranged above the weaver stand.
  • the depth of the choir board has been increased from 120 to 125 mm in order to loosen the urine with the aim of reducing friction by increasing the spacing between the holes in the direction of the weaving width.
  • warp threads are not drawn through or passed straight through in the harness as before, but jumping. This is illustrated by the following list: This type of passage ensures that despite the different division in jacquard machine (16) and chorus board (32) will get the desired rumor order.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
EP84112815A 1983-11-04 1984-10-24 Procédé et dispositif pour diviser le harnais d'un métier Jacquard Withdrawn EP0144678A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3339995 1983-11-04
DE19833339995 DE3339995A1 (de) 1983-11-04 1983-11-04 Verfahren und vorrichtung zum rumoren des harnisches einer jacquard-webmaschine

Publications (1)

Publication Number Publication Date
EP0144678A1 true EP0144678A1 (fr) 1985-06-19

Family

ID=6213515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84112815A Withdrawn EP0144678A1 (fr) 1983-11-04 1984-10-24 Procédé et dispositif pour diviser le harnais d'un métier Jacquard

Country Status (2)

Country Link
EP (1) EP0144678A1 (fr)
DE (1) DE3339995A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731447A1 (de) * 1997-07-22 1999-01-28 Textilma Ag Webharnisch und Jaquardwebmaschine mit Webharnisch

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR994962A (fr) * 1949-06-29 1951-11-26 Corps de façonné universel permettant le tissage d'étoffes de densités de chaîne et de largeur variables avec réappareillage immédiat
FR2314279A1 (fr) * 1975-06-12 1977-01-07 Staeubli Ag Harnais jacquard pour metier a tisser

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR994962A (fr) * 1949-06-29 1951-11-26 Corps de façonné universel permettant le tissage d'étoffes de densités de chaîne et de largeur variables avec réappareillage immédiat
FR2314279A1 (fr) * 1975-06-12 1977-01-07 Staeubli Ag Harnais jacquard pour metier a tisser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731447A1 (de) * 1997-07-22 1999-01-28 Textilma Ag Webharnisch und Jaquardwebmaschine mit Webharnisch

Also Published As

Publication number Publication date
DE3339995A1 (de) 1985-05-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18D Application deemed to be withdrawn

Effective date: 19860220

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Inventor name: BROCKS, HANS

Inventor name: BUSCH, WERNER