Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04B—KNITTING
  • D04B7/00—Flat-bed knitting machines with independently-movable needles

Definitions

• the invention relates to a flat knitting machine with needle beds and at least one lock having a lock slide which is guided and held on slide rails, lifting means being provided on the lock slide which have bolts which are displaceable in their longitudinal direction and are supported on the slide rails.
• the lock carriages of flat knitting machines are guided and held on carriage rails, which are arranged parallel to the lower ends of the needle beds.
• the locks therefore move a short distance parallel to the top of the needle bed and control the needles, sinkers and other needle actuating elements for the stitch formation and patterning processes during the carriage run.
• bearing assemblies with correspondingly low-friction rollers, which roll on the sled running rail, are detachably attached to the lateral ends of the locks.
• Conventional lifting devices of this type are relatively heavy due to the mechanical operating elements. This is disadvantageous, since the locks or the lock carriage should or should be as light as possible, so that the forces occurring in high-speed flat knitting machines are kept as low as possible during the acceleration and braking of the lock carriage when reversing the carriage.
• the conventional lifting devices have the disadvantage that the mechanical elements for actuating the devices take up a relatively large amount of space on the tops of the locks, which is disadvantageous in the case of modern, complicated locks which are designed to be as small as possible in order to achieve high productivity should.
• the operating effort for conventional lifting devices is considerable since the lifting levers must be actuated and locked individually.
• the present invention is therefore based on the object of creating a flat knitting machine with a lifting device for lock slides which are light, require little space and are quick and easy to operate.
• This object is achieved in that the bolts can be actuated pneumatically.
• the lifting devices can each be permanently connected to a pressure line, in which a pressurized fluid enters a pressure cylinder of the lifting device according to the invention by means of a switchable pressure valve.
• the lifting devices are provided with detachable connections for connecting a pressure line.
• the pressure line is only connected to the lifting devices when the carriage is to be raised. The pressure line can therefore not interfere with the normal operation of the flat knitting machine.
• the lifting devices are connected to one another by pressure lines.
• the effort required for lifting can be significantly reduced by this additional inventive feature, since now only a pressure line has to be connected when the lock carriage is to be raised.
• the pressure is then distributed evenly over the interconnected pressure lines to the individual lifting devices.
• Fig. 2 is an enlarged view of the lock carriage area with the lifting device according to the invention.
• needle beds 2 and 3 are arranged, over which a lock 4, 5 moves.
• the locks are carried by lock slides 6, 7, which are rigidly and torsionally rigidly connected to one another via a slide bracket 8.
• Figure 2 shows an enlarged view of a lifting device according to the invention as shown schematically in Figure 1 in connection with the overall arrangement of a lock carriage arrangement.
• a bore 22 is provided in an upper lock plate 21, through which a bearing bush 23 for a bolt 24 extends.
• the bolt 24 is axially through the bearing bush 23 in the following descriptive manner in the direction of the slide rail 11 or 12, so that it is supported on the surface 25 of the slide rail 11 or 12.
• a piston 26 is provided which can slide in a cylinder 27 in the longitudinal axis direction.
• the cylinder 27 can be pressurized with a pressurized fluid via a connector 28.
• a pressure line (not shown) is connected to the connector 28 if it is not already permanently connected to the connector 23. Due to the pressurized fluid flowing into the cylinder 27 via the pressure line and the connector 28, the piston 26 and thus the bolt 24 are pressed onto the surface 25 of the slide rail 11 or 12, so that the lock slide rises. The lock slide can then be moved over the needle beds 4, 5, the bolt end surface 29 of the bolt 24 lying on the surface 25 of the slide running rail 11 or 12 sliding over this surface 25.
• two lifting devices of the type described are provided on each side of the lock carriage see, so that the entire lock carriage is lifted and moved by simultaneous or sequential actuation of these lifting devices. It is advantageous. it when the individual lifting devices are connected to one another by pressure lines, the pressure lines optionally being guided over the slide bracket 8 and fastened thereon. In this way, it is only necessary to connect a pressure line at a single point on the lock slide, since the lifting devices are connected to one another via the connecting pressure lines.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=6395118

Family Applications (1)

Country Status (2)

Citations (2)

Family Cites Families (1)

• 1989
  • 1989-12-08 DE DE19893940701 patent/DE3940701C1/de not_active Expired - Lifetime
• 1990
  • 1990-10-27 WO PCT/EP1990/001921 patent/WO1991009165A1/de unknown

Patent Citations (2)

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