Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
  • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
  • D04B27/24—Thread guide bar assemblies
  • D04B27/26—Shogging devices therefor

Definitions

• the present invention relates to a device bringing together and synchronizing different systems having for purpose the displacement and positioning of the distributing elements of drawing threads on a Textile machine.
• This device which is more particularly suited to the Raschel, chain or crochet-type looms can have other uses.
• the device traditionally used for the reproduction of designs on Raschel ultra-bar looms is that of chain links, chains which are expensive to implement, cumbersome and heavy in the case of large designs, and because of the cost of links very often impossible to store, the links to be disassembled for reuse in another drawing.
• this traditional device uses in most cases only one link per walking cycle in order to have the minimum in working this process gives the drawing threads only jetties "under” or weft without relief effect .
• the jetties "under” being the deposit of the thread in the back of the needles (side opposite to the beak) the bottom bars ensuring the binding.
• the traditional system of guide bars or throwers due to its design, achieves space in the trade proportional to the number of these bars making work difficult at some point and reducing the speed of the trade.
• the invention relates to a drawing reproduction device of the type mentioned eliminating or reducing the difficulties encountered with the traditional system. 5 Indeed punched cards will be used in place of the links, making the cost of producing a drawing lower, easy to implement in the trade, lighter training and above all a possibility of storage after work and re-use due to their low cost and size, thus allowing entire collections to be preserved.
• the drawing reproducing device has:
• a programming / selection unit made up on the one hand with perforated cards 1 joined to each other by a flexible system (lace for example) and taking their support on a perforated parallelepiped 2 which animated by a rotation movement ensures the passage from one card to the next, and a back and forth movement which ensures the plating of these cards 1 on the end of push rods 3, and on the other hand of push rods 3 taking the program of cards 1 and transmitting them to the slides 4 themselves arranged in a support 6 at regular intervals, according to their selection due to the programming of the cards 1, these slides will have a position which will put them in contact or not with the plate 5 which in its upward movement will cause the assembly 4 and 6 and the elements which follow and are attached thereto, rack 7, cable 8, thrower 9.
• the selection made up on the one hand with perforated cards 1 joined to each other by a flexible system (lace for example) and taking their support on a perforated parallelepiped 2 which animated by a rotation movement ensures the passage from one card to the next, and a
• the interval between two slides 4 on the support 6 corresponds if the amplitude-modifying lever is not used at the interval between two needles (from axis to axis of these).
• This wedge 13 will be put into work at the start of the cycle by the pusher 16, the cancellation of this work in the case of even values will be done by the action of the end of the arm 17 connected to the pusher rod 18.
• L end of the arm 17 slides in a comb guide 19.
• the push rod 18 is positioned and guided just like the push rods 3 in fixed grids 32 and 33. The recall of the rods pous ⁇ evenings at their starting point for. a new cycle is ensured by movement of the movable grid 30 which acts on the stop pins 31 of the push rods 3 and 18.
• the slides 4 are returned to the starting point of the cycle by the movement of a movable plate 34
• the return to the start of the cycle of the guide arm 6 is ensured by gravity and pressure of the movable plate 5 on the stop 35.
• the fixed stop 36 possibly adjustable ensures by its position the lowest point " of 6. 3)
• a rack 7 retained for the time necessary by a pawl 20 supports in its upper part the attachment system and position adjustment of the sliding rod 15 (locking screw 21) this rod 15 abutting on the fixed support 22 , and also the attachment and adjustment systems of the cable 8 (adjustment and locking screws 23).
• Maintaining the pawl 20 in the closed position is ensured by the pressure of the spring 24 pressing on the part 27 of the pawl 20 on the one hand and a fixed point 25 on the other hand.
• the open position of the pawl 20 is ensured by the pressure of the lever 26 on the part 27.
• the open position of the pawl releases the rack 7 and allows it to return if necessary downwards (return ensured by gravity and traction of the spring 10).
• a throwing system "on” which composed of a lever 28 acting on the slide 4 placed in the appropriate position and selected for this purpose, will ensure the displacement of the assembly 6-7-8-9-15 and the deposit of the wire 29 in the beak of the needle 12.
• the control of the lever 28 will be programmed over two loom cycles, which for the example will give the first cycle a displacement of the drawing thread 29 in the left-right direction and in order to achieve the reverse in the second cycle the lever 28 will act previously to this displacement by pressure on the corresponding slide 4 and the right-left displacement of the wire 29 will be caused by the release of the pressure of the lever 28 .
• the assembly presented so far constitutes the means of controlling the movements of a thrower 9 or of a group of throwers working identically (being fixed on the same cable 8) but the device
• wire depositing elements or throwers 9 move by sliding on suitable guide supports 38 crossing the loom in the width direction of the fabric and just above the needles 12. These throwers can have the most diverse shapes
• the throwers 9 will be made integral with the cable, 8 which ensures their displacement, by a cable clamp type system 39.
• a guide support 38 can receive over the width of the loom a large number of throwers 9
• FIG. 2 represents the Programming / Selection assembly and the recall systems.
• FIG. 3 shows a perforated card 1.
• FIG. 4 represents the perforated parallelepiped 2 on which the cards 1 take place.
• FIG. 5 represents in section the system for recalling the push rods 3 and 18.
• Figure 6 gives an example of selection of pier "under" 5 and 28 being in Top dead center.
• Figure 7 gives an example of pier selection "on” according to the pier selection "under” 5 15 and 28 being in Top dead center.
• FIG. 8 represents the rack and pinion assembly 7 and transmission device.
• Figure 9 shows in section the odd value system in work. 20 .
• Figure 10 shows in section the odd value system outside work.
• FIG. 11 represents in top view the bottom of the guide 6 in which the rod 15 slides and on which the odd-thickness shim 13 is articulated.
• FIG. 12 represents in top view
• Figures 13-14-15-16 show the odd thickness shim 13 in order from above, front, rear and this side.
• Figure 17 is the front view of the drawing wire distribution system.
• FIG. 18 is the representation in side view of this system (fig. 17).
• 35 Figure 19 is a perspective of this system (fig.17) with the cable clamp device 39.
• FIG. 20 is the side view of a disposi ⁇ tion of throwers 9 on their guide supports 38 relative to the needles 12.
• FIG. 21 shows a front view of an arrangement of throwers 9 on a guide support 38 coupled to their respective cables 8 and which can all work differently from one another, except for example 9a and 9d which will be fixed on the same cable 8a, the drawing referring to the distance from this interval.
• FIG. 22 to 31 schematize the walking cycle which breaks down as follows:
• the maximum displacement value of the drawing threads 29 that the cards 1 can have executed will be defined as necessary, on a purely exemplary basis, a maximum displacement value of 30 units (30 needle intervals) will be taken in the jetty "under ", plus a unit due to the odd system and plus a unit of. jetty "on” rising.
• FIG. 32 represents a part of the card 1 fully perforated with, for the example, the indication of the displacement values corresponding to each perforation (vertical numbering on the right of the figure), the presence of a hole of value 0 allowing when 'it is blocked the displacement of its slide 4 to effect the jetty "on” rising with the position 2 in jetty “under” and also a perforation 00 allowing a jetty "on” rising from the position 0 of jetty “under” . Note that for the maximum value defined for example 30 + 1 + 1, only 18 perforations are necessary.
• FIG. 33 represents for the example this same part of the card (fig. 32) if it is used in a drawing at position 4 (4th cycle) and for the throwers or groups number 1 and 2 according to the scale of the scale (fig. .34) itself established from the graph or mapping (fig.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=9395323

Family Applications (1)

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Family Cites Families (5)

• 1990
  • 1990-03-27 FR FR9004145A patent/FR2660330B1/fr not_active Expired - Fee Related
• 1991
  • 1991-03-27 WO PCT/EP1991/000593 patent/WO1991014815A1/fr not_active Ceased
  • 1991-03-27 EP EP19910906927 patent/EP0477318A1/de not_active Withdrawn

Non-Patent Citations (1)

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