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

Definitions

• the invention relates to a warp knitting machine for producing at least one tape according to the preamble of claim 1.
• the warp knitting machine is used in particular for the production of elastic bands
• Warp knitting machines of the aforementioned type are known in large numbers, for example from EP 0 158 652.
• the weft rods are reciprocally mounted in their longitudinal direction in sliding bushes in lateral rocker arms, which in turn guided in oscillatory movements back and forth against the active site are.
• the disadvantage here is that two different drive devices are required for the weft insertion and that is a drive device for the longitudinal direction of the weft rod reciprocating the weft rod and another drive for the oscillatory movement of the oscillating arms against the active site.
• the sliding guides of the firing bar are susceptible to wear in the oscillating arm, in particular under the usual dust load in such operating rooms.
• the object of the invention is to improve a warp knitting machine of the type mentioned in order to avoid the disadvantages mentioned.
• the weft rod is hingedly connected to wings on both sides, such that the weft thread guide performs a circular arc path for inserting the weft thread at the point of action, both the feeding of the weft thread guide to the point of action and the longitudinal movement of the weft thread guide along the knitting needles are solved in a single trajectory. This also requires only a single drive for the required movements, the most cost-effective, easy-to-set and easy-to-use control is.
• the articulated connection of the weft rod with the wings also disables sliding guides, so that not only reduces the wear but promoted the ease and the driving force can be reduced.
• the hinged connections are also easier to protect against a dusty atmosphere.
• an embodiment of the warp knitting machine according to claim 2 according to which the articulation point of the weft rod is adjustable on the rocker arms in the longitudinal direction.
• This allows the length of the weft insertion set.
• the weft rod is fastened at both ends to vertical limbs of angle levers, the other horizontal limbs of which are articulated to the oscillating lever.
• the firing bar along the vertical leg of the angle lever is adjustable. This makes it possible to adjust the distance of the weft rod on the one hand and thus of the weft yarn guide on the other hand with respect to the active site and thus the knitting needles.
• the rocker arms are articulated on the machine frame.
• the weft thread guide is adjustable in the longitudinal direction of the shute, so that it can be adjusted precisely to the point of action.
• the warp knitting machine can be designed to form a single band or also for the simultaneous production of two or more adjacent bands.
• the drive of the weft rods there are a variety of possibilities.
• the claim 7 describes a particularly simple embodiment for driving the shooting rod by means of a crank mechanism, the crank is connected by means of a coupling rod directly or indirectly with the shooting rod.
• Figure 1 shows the effective range of a warp knitting machine in a schematic representation at a crank angle 0 ° or 360 ° of the drive and in front view of the effective range.
• Figures 2 to 4 different phases of the weft insertion of the Kettenwirkmaschi- 15 ne of Figure 1 at the crank angles 90 °, 180 ° and 270 °.
• Such a band consists of knitted chains, the so-called fringes 4, which are connected to each other via transversely extending, integrated weft threads 6.
• the warp knitting machine knitting needles 8 which are guided in a tee 10.
• the weft guides 14 are fixed by means of clamping screws 16 along the weft rod 12 in adjustable positions.
• the weft rod 12 is pivotally connected at both ends via angle lever 18 with rocking levers 30 20.
• the rocker arms 20 are in turn each pivotally mounted via bearings 22 in a holder 24, which in turn is connected to the machine frame 26.
• the rocker arms 20 are each angled by an angle ⁇ . a vertical 28 to the site of action pivotable. Due to the pivoting movement, the weft yarn guides 14 execute a circular arcuate path 30 whose chord corresponds to the length X of the displacement path of the yarn guide 14 from one side of the belt 2 to the other side. Y is the height of the arcuate path 30 of the weft guide 14 over the site of action.
• the weft rod 12 is connected on both sides in each case via an adjusting device 32 with the leg 34 of the angle lever 18, which is aligned perpendicular to the effective range.
• the adjusting device 32 includes a longitudinal slot 36 in the leg 34, wherein a clamping screw 38 serves to fix the position.
• This adjusting device 40 By means of a further adjusting device 40, the displacement of the weft guide 14 can be adjusted.
• This adjusting device 40 includes a hinge 42 on horizontal legs 44 of the angle lever 18 which is connected to the rocker arm 20.
• the joint 42 in a longitudinal slot 46 of the rocker arm 20 is displaceable and secured by means of a clamping screw 48. This makes it possible to increase or decrease the radius of the arcuate path 30 over the point of action.
• crank mechanism 50 For driving the weft rod 12 different embodiments are conceivable.
• this is a crank mechanism 50, the crank 52 is connected via a coupling rod 54 with one of the two rocker arm 20.
• Figures 2 to 4 show different phases of insertion of the weft thread 6 along the knitting needles 8 at the crank angles 0 ° or 360 °, 90 ° 180 ° and 270 °.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Knitting Machines (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39202035

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Family Cites Families (2)

• 2008
  • 2008-09-30 WO PCT/CH2008/000405 patent/WO2009049434A1/de active Application Filing
  • 2008-09-30 CN CN2008801117104A patent/CN101827970B/zh not_active Expired - Fee Related
  • 2008-09-30 EP EP08800451A patent/EP2207923A1/de not_active Withdrawn
  • 2008-09-30 KR KR1020107007326A patent/KR101442880B1/ko not_active IP Right Cessation
• 2010
  • 2010-11-22 HK HK10110832.9A patent/HK1144312A1/xx not_active IP Right Cessation

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events