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
  • D04B15/38—Devices for supplying, feeding, or guiding threads to needles
  • D04B15/54—Thread guides
  • D04B15/56—Thread guides for flat-bed knitting machines

Definitions

• the invention relates to a flat knitting machine having at least one yarn guide which is movable along a yarn guide rail and has a yarn feed part which can be adjusted in the vertical direction.
• WO 2006/056843 also a yarn guide is shown with a vertically adjustable yarn feeding, in which the vertical movement of the yarn feeding is achieved by cams.
• the cams are located in a control plate which is movable parallel to the yarn guide rail.
• the yarn guide and the control plate are each moved by separate drive units. Due to a short-term difference in speed between the control plate and the thread guide, the thread feed part slides by means of a bolt along the cam and we thereby raised or lowered.
• JP 2001-64854 a separately driven special yarn guide is described, which also has a height-adjustable yarn feeding.
• the yarn guide is moved over a toothed belt, which is driven by a yarn guide drive motor.
• the height adjustment of the Fadenzu Swissteils is effected by controls that are driven by a second toothed belt. As long as both belts have the same speed, there is no change in the height position of the Fadenzu Swissteils. By a short-term difference in speed of the two toothed belts, however, a height adjustment of the Fadenzu Switzerlandteils is effected.
• highly dynamic electric motors and accurate synchronization of the two motors are required, whereby this proposed solution is also costly.
• the present invention has for its object to provide a flat knitting machine with thread guides, the yarn feeding parts are height adjustable in a simple and cost-effective manner.
• the object is achieved with a flat knitting machine having at least one yarn guide which is movable along a yarn guide rail and which has a yarn feed part that can be adjusted in the vertical direction, which is characterized in that a control member rotatably driven about an axis extending parallel to the yarn guide rail is provided in that the thread feed part of the thread guide can be acted on at each position of the thread guide on the thread guide rail and is adjustable in its vertical position.
• control for height adjustment of the yarn feed part only has to be moved when a
• the thread guides do not have to have a separate drive. Rather, they can also be moved by means of drivers through the 25 slides of the flat knitting machine. Furthermore, the solution according to the invention of adjusting the height of the yarn feeding parts of the thread guide can also be used in machines with very long needle beds and thus very long travel paths of the thread guides. It is advantageous if the control extends parallel to the yarn guide rail over the entire range of motion of the yarn guide. In this way, it is ensured with the least possible effort that the position of the yarn feeding part of the yarn guide can be adjusted to 5 any arbitrary position of the yarn guide in his space of movement.
• the yarn feed part can be acted upon by the control either directly or indirectly via one or more intermediate members.
• the more complex solution with pontics may be preferable to i5 especially if this allows a more favorable power transmission from the control element to the thread supply part.
• the control can be mounted on the thread guide rail.
• the storage can be done not only at the ends of the control, but also at intermediate points, so that a precise height adjustment of Fadenzutechnischteils is ensured even in machines with a large needle space. It can not be wrong
• the control element is substantially wave-shaped or tubular and has on its surface one or more longitudinally extending projections or depressions, with which the thread supply part or at least one cooperating with this intermediate member can be brought.
• the design of the control element as a drivable shaft or tube gives it a high rigidity and also allows easy pivoting and storage of the control.
• the control element can only have a longitudinal projection whose free longitudinal edge has a substantially circular cross-section and can be brought into positive engagement with a recess in the yarn feed part or in an intermediate member connected to the yarn feed part.
• the thread feed part or the associated intermediate member can slide during the movement of the yarn guide along this projection. If the control element is not pivoted during the sliding of the yarn feed part along the projection, then the projection provides for locking the height position of the yarn feed part. If, on the other hand, the vertical position of the yarn feed part is to be changed, then the control element can be pivoted during the movement of the yarn guide or when the yarn guide is at a standstill and the yarn feed part can thereby be raised or lowered.
• the recess in the thread feed part or in the intermediate member may preferably be formed as a substantially U-shaped groove which engages around the free longitudinal edge of the projection in a form-fitting manner.
• control element can have on its surface a toothing extending along the control element, with which toothing arranged on the thread supply part or on an intermediate element can be brought into engagement.
• toothing on the control element serves to lock the once set vertical position of the thread supply part. An adjustment of the vertical position is also possible here during the movement of the thread guide or in its breastfeeding.
• control member may have the shape of a longitudinally slotted tube and inside the tube an intermediate member rotatably and longitudinally displaceably mounted, which has a passing through the slot of the control outward protrusion or toothed portion with which the yarn feed is engaged or is engageable.
• the transmission of the rotational movement of the tubular control element via an intermediate member mounted in the control takes place. This is displaceable inside the tubular control element and along it.
• the outwardly projecting projection or toothed area can be brought into engagement with the thread supply part of the thread guide, thereby fixing or adjusting its height position.
• control can also have the form of a shaft on which a provided with a projection or a toothing intermediate member is rotatably mounted and longitudinally displaceable.
• the intermediate member can for this purpose completely or partially surround the shaft and act on the projection or the toothing on the Fadenzu Genevateil.
• Fig. Ia is a front view of a yarn guide, a yarn guide rail and a first control
• Fig. Ib is a view in the direction of arrow X on the yarn guide
• Ic is a schematic representation of the vertical displacement path of the yarn feeding part of the yarn guide of Fig. Ia;
• FIG. 2 is an enlarged sectional view through the yarn guide of FIG. 1a along the line A-A;
• Fig. 3 is a representation corresponding to FIG. 2 with a second
• FIG. 4 is a representation corresponding to FIG. 2 of a third
• Fig. 5 is a corresponding to FIG. 2 representation of a fourth
• Fig. 6 is a representation corresponding to FIG. 2 of a fifth embodiment of a control element and a
• Fig. 7 is a corresponding to Fig. 2 representation of a sixth
• Embodiment of a control element and a Fadenzu Switzerlandteils Embodiment of a control element and a Fadenzu Switzerlandteils.
• a yarn guide 1 which has a Fadenzu fertilteil 2, which is mounted in a height adjustable in a bearing piece 11 which is arranged on a yarn guide box 10.
• the yarn guide 1 is longitudinally movably mounted on the yarn guide box 10 on a yarn guide rail 100 and can be moved by a driver attached to a carriage of a flat knitting machine, not shown here, or by a separate drive in the direction of the double arrow HB.
• the yarn feeding part 2 is in the illustrated example in such a vertical position that the lower end 21 of the yarn feeding 2 is located above the needle NK and thus can not supply thread here not shown.
• a control 3 is provided, with which the upper end 22 of the yarn feed 2 is positively connected.
• the control 3 is at least as long as the movement By a device not shown here, a rotational movement can be introduced into the control 3, which causes movements of the yarn feed 2 in the directions of the double arrow VB.
• the control element 3 is formed by a shaft 31 having a longitudinal projection 32.
• the shaft 31 is pivotally mounted in a plurality of bearing blocks 4 such that a circular groove 41 of the bearing blocks 4 comprises the shaft 31 of the control element 3 at an angle of> 180 °.
• the bearing blocks 4 are connected to the thread guide rail 100.
• the free edge of the projection 32 is also formed in cross-section substantially circular, as in particular, the detailed representation in Fig. 2 shows.
• the upper end 22 of the yarn feeding member 2 has a substantially U-shaped groove 23 (FIG. 2) which includes the circular cross-sectional area of the projection 32.
• the maximum adjustment path VBS of the thread feed part 2 is shown schematically.
• the lower tip 21 of the Fadenzu slaughters 2 can assume a lowest position, which is below the needle cross and is designated UNK. In the highest position ONK of the tip 21, this lies clearly above the needle cross NK.
• the yarn feeding part 2 can be moved continuously by means of the control element 3. This is achieved by a corresponding pivotal movement of the control element 3, as illustrated in particular in FIG. 2.
• the U-shaped groove 23 of the yarn feed 2 moves along the circular cross-sectional area of the projection 32 of the control 3.
• the projection 32 also serves to fix the Vertical position of the yarn feed 2 during the movement of the yarn guide 1 and at its standstill.
• FIGS. 3 to 7 further embodiments of control elements in connection with the upper end 22 of the yarn feed part 2 in a representation corresponding to FIG. 2 are shown.
• Components with the same functions as the components in Fig. 2 are provided with identical reference numerals.
• a rotational movement of the control element is translated into a translatory movement of the yarn feed part 2.
• Fig. 3 shows a control, which is designed as a control shaft 5.
• the drive device of the shaft 5 is not shown here.
• the bearing of the control shaft 5 is identical to the mounting of the shaft 31 of the control element 3 in Fig. 2.
• the control shaft 5 has a rod-shaped portion 51 which is held in a bearing block 4.
• the control shaft 5 has a toothed region 52 which extends over the entire length of the control shaft 5.
• a toothing 24 is also provided in this embodiment, which is in engagement with the teeth 52 of the control shaft 5. If the yarn guide 1 is moved along its yarn guide rail, the toothing 24 of the upper end 22 of the yarn feed part 2 also moves along the toothing 52 of the control shaft 5.
• control shaft 5 is a profiled shaft which comprises of a U-shaped holder 110 and is fixed in its height position.
• the holder 110 is attached to the bearing piece 11 of the yarn guide box 10 (FIG. 1a).
• a s lever 6 rotatably as an intermediate member and guided longitudinally displaceable.
• the lever 6 has at its free longitudinal edge on a circular cross-sectional area 61, which is surrounded by a U-shaped groove 23 of the upper end 22 of the yarn feed 2.
• the height position of the thread feed part 2 is determined by the pivot position of the control shaft 5 and thus also of the lever 6.
• the control is also an i5 profile shaft 5 as in the variant of FIG. 4 and is also stored in an identical manner as this.
• a toothed segment 7 rotatably and guided longitudinally displaceable.
• the toothed segment 7 has a toothing 71, which is in engagement with a toothing 24 at the upper end 22 of the yarn feed part 2.
• 2o takes the thread guide 1 in its movement along the yarn guide rail 100 with the toothed segment 7, which then slides along the shaft 5.
• the control element 25 has the shape of a longitudinally slotted tube.
• this intermediate members are used, which are in engagement with the upper end 22 of the yarn feed 2.
• the control element in the form of a tube 8 is rotatably mounted in one or more bearing blocks 4.
• a lever-like intermediate member 6 is arranged, which projects through the longitudinal section 81 of the tube 8 to the outside.
• An adjustment of the vertical position of the Fadenzu slaughters 2 is achieved by a rotation of the tube 8.
• a circular cross-sectional area 61 of the lever 6 is guided longitudinally movable.
• the pivotal movement of the tube 8 is transmitted to surfaces 62, 63 of the lever 6 and thereby pivoted with it.
• the free end 64 of the lever 6 also has a substantially circular cross-section and protrudes into a slot-shaped groove 25 of the upper end 22 of the Fadenzu slaughters 2.
• control is also a pivotally mounted tube 8, in which a toothed segment 7 rotatably and longitudinally displaceably guided, similar to the lever 6 in the variant of Fig. 6.
• the toothing 71 of the toothed segment 7 is
• the yarn guide 2 moves the sector gear 7 along the inner surface 62 of the tube 8, as it moves along the Thread guide rail 100 moves.

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

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

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Family Applications (1)

Country Status (4)

Cited By (4)

Families Citing this family (17)

Citations (5)

Family Cites Families (2)

• 2009
  • 2009-04-23 EP EP20090005692 patent/EP2243871B1/de active Active
• 2010
  • 2010-04-21 JP JP2012506396A patent/JP5531305B2/ja active Active
  • 2010-04-21 CN CN201080018360.4A patent/CN102439208B/zh active Active
  • 2010-04-21 WO PCT/EP2010/002450 patent/WO2010121803A1/de active Application Filing

Patent Citations (5)

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