Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
  • D04B15/88—Take-up or draw-off devices for knitting products
  • D04B15/90—Take-up or draw-off devices for knitting products for flat-bed knitting machines

Definitions

• the invention relates to a spreader for a knitting machine with movable knock-off boards, which has a rigid holding section for holding the spreader on the knitting machine and an elongated, vertically arranged guide section for removing the knitted goods.
• Such a spreader device for a knitting machine with movable knock-off boards is shown, for example, in the machine instructions CMS 400 selectanit knitting machine systems from H. Stoll GmbH & Co., Reutlingen, from 1988 on drawing sheets 203 205 to 203 207.
• a plug-in spreader of this type held from below, with two strip plates and one longitudinal slot in each case in the working area of the movable knock-off boards, is used for hanging up to the edge, for a predominantly single-surface knitted fabric and for processing synthetic yarns.
• the knitting machine is equipped with a spreader on the left and a spreader on the right side of the needle bed.
• Each spreader is assigned a counterholder as a guide on the lower part of the vertical guide section.
• the counterholder is provided with a guide channel and with guide elements which, arranged at a certain distance, leave a gap between three staggered guide rollers.
• the guide section held in the counterholder allows the knitted edge to pass through, but prevents the guide section of the spreader from evading laterally.
• the spreader device and counter-holder must be adjusted at the same time.
• the main purpose of using a spreader device is to prevent the vertical edges of the knitted fabric from bulging towards the interior of the knitting machine due to the pulling force of the knitted fabric being pulled off.
• the spreaders ensure that the respective edge of the knitted fabric is vertically straight towards ten runs.
• a main disadvantage of the known spreader devices is that the puncture of the last active tapping plate on the edge of the spreader must be positioned extremely precisely, since otherwise the corresponding, movable tapping plate does not have the vertical slot provided in the guide section for the engagement of the plate hits, but strikes against the guide section and is damaged or destroyed.
• the smallest possible spacing of the tee boards is limited by the width of the webs delimiting the slot in the spreader. In the case of finer knitted fabrics, such a spreader can no longer be used, which in turn leads to the above-mentioned bulging of the knitted edges inwards.
• spreader devices are also known. Such a spreader device is shown, for example, in the machine manual ANVH-B from H. Stoll GmbH & Co., Reutlingen, from 1969 in drawings No. 72 602/603 and 55 857/858.
• This known spreader essentially consists of a rigid support section arranged at the top and a vertical guide section in the form of a spring steel wire.
• the object of the present invention is to present a spreader for a modern knitting machine with movable knock-off boards, in which damage to the knock-off boards can be ruled out if the puncture of the board in the spreader is inexactly positioned, and in which the smallest possible distance between the tee boards is not limited by the geometric structure of the spreader.
• this object is achieved in that between the rigid mounting section and the elongated, vertically arranged guide section, an elastic section is provided in the working area of the movable knock-off boards, which in the horizontal direction, in particular since, when subjected to pressure by a knock-over board ⁇ Lich can deviate to the printing direction.
• the elastic section is formed by a bundle of fibers with high tensile strength, which are firmly anchored on the one hand on the holder section and on the other hand on the guide section.
• the tensile strength of the fiber bundle should be at least so great that masses between 10 and 60 kg can be carried.
• the moveable Tee-off boards can then simply push adjacent fibers to the left and right to the side when working in the work area and clear a path between the fibers without fear of damage to the tee-off boards.
• the fibers can also form a unit in the rotated version and be pushed as a whole to the left or right.
• the fibers are preferably synthetic fibers, since their elasticity and tensile strength can be significantly greater than that of natural fibers.
• Synthetic fibers can consist, for example, of polyamide, such as nylon, or of aramide, such as kevlar. Also preferred is an embodiment in which the mounting section and / or the guide section is made of plastic, which melts under high heat. As a result, in a further development of this embodiment, the plastic fibers can be welded to the mounting section and / or the guide section.
• the fibers can be firmly clamped in the holding section and / or in the guide section.
• the simple interchangeability of the elastic section is particularly advantageous.
• the fibers are fixed to the holding section and / or to the guide section. glued.
• the guide section is cylindrical with a ratio of height to diameter greater than 100, preferably greater than 200.
• Such an elongated, wire-shaped mounting section is known per se, for example, from the second, cooler document mentioned above by the Stoll company. It has the great advantage that the removal of the knitted goods works perfectly and there is no jamming in the transport or in the guide, as is often the case, for example, with the spreader according to the prior art cited at the beginning can be.
• the guide section consists of metal, preferably hardened stainless steel. This ensures the durability of the guide section while at the same time ensuring optimal functionality.
• An embodiment of the spreader according to the invention is also preferred, in which a vertical longitudinal slot is provided in the elastic section in the working area of the movable tee-off boards, into which a tee-off board can engage.
• the vertical longitudinal slot per se is already known from the prior art cited at the beginning. It allows the tapping plate to engage in the spreader.
• the elastic section as a whole has to be diverted when a striking plate strikes the spreader in the working area. This is particularly beneficial in a finer division of the knitting machine, in which case the knock-over boards are arranged with a smaller mutual distance.
• FIG. 1 a is a schematic front view of an embodiment of the spreader according to the invention with fiber bundles in the elastic section;
• FIG. 1b shows a longitudinal section through the spreader according to FIG.
• FIG. 2a shows a schematic front view of an embodiment of the spreader according to the invention with a vertical longitudinal slot in the elastic section;
• FIG. 2b shows a schematic longitudinal section through the spreader according to FIG. 2a;
• Fig. 3a shows a schematic front Alan 'maybe a
• FIG. 3b shows a schematic longitudinal section through the spreader according to FIG. 3a;
• FIG. 4 shows a schematic frontal view of a counter-holding device for the vertical guide section of the spreader according to the invention with a schematic sectional view of the needle bed of a knitting machine to clarify the installation position;
• FIG. 5a shows a schematic front view of an embodiment of the spreader according to the invention with two bands in the elastic section
• FIG. 5b shows a schematic longitudinal section through the spreader according to FIG. 5a.
• the spreader according to the invention shown in FIGS. 1a and 1b for a knitting machine with movable knock-off boards has a rigid mounting section 1 at the upper end for holding the spreader on the knitting machine.
• the holding section 1 can, for example, be suspended in the thread guide rail of the knitting machine, so that the spreader is suspended from above.
• the mounting section 1 which can be made of metal or a rigid plastic, is connected in the working area of the movable knock-off boards of the knitting machine an elastic section E.
• the elasticity of the material used for the elastic section ⁇ must be at least so great that when the elastic section ⁇ is subjected to pressure by a knock-off plate, which takes place essentially in the horizontal direction, the elastic section E can at least partially evade horizontally in the area under pressure becomes.
• the elastic section E is formed by a multiplicity of elastic fibers 2 which on the one hand at their upper end on the holding section 1 and on the other hand at their lower end on a receiving part 4 for receiving a retainer wire 6 for straight, vertical withdrawal of the edge of the knitted goods are firmly anchored.
• a vertical longitudinal slot 3 is left free in the working area of the movable tee-off boards, into which a tee-off board can engage when it moves towards the spreader from the front or from behind.
• the spreader is not positioned exactly so that the striking plate exactly meets the longitudinal slot 3, then due to the elasticity of the elastic section E, a horizontal deflection of at least a part of the elastic section against the horizontal pressure load by the striking plate is achieved, so that the Tapping board cannot be damaged when it hits the spreader.
• the horizontal deflection can in particular also take place laterally to the printing direction of the tee plate, in which the tee plate extends into the gap between see two adjacent fibers 2 placed and if necessary pushes them away on both sides.
• the fibers 2 must have a high tensile strength (10-60 kg) and can in particular be synthetic fibers.
• polyamide fibers e.g. Nylon, or aramid fibers, e.g. Kevlar.
• the fibers 2 can be welded to the mounting section 1 and / or the receiving part 4 if the mounting section 1 and / or the mounting part 4 consists of a material that melts under high heat.
• the fibers 2 can, however, also be firmly clamped in the mounting section 1 or the receiving part 4 or can be glued to the mounting section 1 or the receiving part 4. In any case, it must be ensured that the selected connection type has a sufficiently high tensile strength (10 - 60 kg).
• the receiving part 4 and the wide holding wire 6 form a guide section 5, on which the edge of the knitted fabric is guided vertically downward from the working area of the knitting needles and tapping plates.
• the guide section 5 is preferably cylindrical and has a ratio of height to diameter greater than 100, better still greater than 200.
• the guide section 5, in the exemplary embodiment of FIGS. 1a and 1b in particular the wide holding wire 6, is made of metal, preferably hardened stainless steel.
• the elastic section E does not consist of fiber bundles. dein, but in one piece from a suitable, elastic material of high tear strength, preferably plastic. Viewed from the front in the middle of the elastic section E in the working area of the movable tee-off boards, a vertical longitudinal slot 3 'is again provided, into which a tee-off board can engage. If the spreader has not been positioned precisely enough relative to the tapping plate so that the tapping plate does not exactly meet the longitudinal slot 3 ', the elastic section E, due to its elasticity, at least partially deviates horizontally in the direction of pressure of the tapping plate when it hits it. This reliably prevents damage to the knock-over board.
• a rigid support section includes l to 1, while in the lower portion of the elastic Abschnit ⁇ tes E cut an elongated, vertically disposed ceremoniessab ⁇ 5 ', which in this embodiment by a wide wire 6 'is formed, is recorded.
• Figures 3a and 3b show an embodiment of the spreader according to the invention, in which the elastic section E is formed by a unit-forming, twisted fibers 2 1 .
• FIGS. 5a and 5b An embodiment of the spreader is shown in FIGS. 5a and 5b, in which the elastic section E is formed by two approximately parallel bands 2 ′′ of elastic material, which have a vertical longitudinal slot 3 ′ 1 for engagement include a tee board.
• bands 2 ′′ for example, elastic ones can also be used Cords, especially those made from round material, are used.
• FIG. 4 shows a counter holding device 7 with guide rollers 8 which guide the wide holding wire 6 ′′ of the vertical guide section 5 ′′ in an area below the center of the guide section 5 ′′.
• the holding device 7 can be locked on a carriage 9, which in turn is rigidly connected to the needle bed 10 of the knitting machine.
• the vertical withdrawal of the knitted fabric on the guide section 5 ′′ works without jamming, since again a wide-hold wire 6 ′′ which is round in cross section is used.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Knitting Machines (AREA)
• Pretreatment Of Seeds And Plants (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=6512110

Family Applications (1)

Country Status (6)

Citations (3)

• 1994
  • 1994-03-08 DE DE4407606A patent/DE4407606C1/de not_active Expired - Fee Related
• 1995
  • 1995-02-11 EP EP95909628A patent/EP0749503B1/de not_active Expired - Lifetime
  • 1995-02-11 AU AU18047/95A patent/AU1804795A/en not_active Abandoned
  • 1995-02-11 AT AT95909628T patent/ATE160391T1/de not_active IP Right Cessation
  • 1995-02-11 WO PCT/DE1995/000176 patent/WO1995024522A1/de active IP Right Grant
  • 1995-03-07 TR TR00242/95A patent/TR28638A/xx unknown

Patent Citations (3)

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