Classifications

• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
  • D03D47/34—Handling the weft between bulk storage and weft-inserting means
  • D03D47/36—Measuring and cutting the weft
  • D03D47/361—Drum-type weft feeding devices
  • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H51/00—Forwarding filamentary material
  • B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
  • B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
• • D—TEXTILES; PAPER
  • D03—WEAVING
  • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
  • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
  • D03D47/34—Handling the weft between bulk storage and weft-inserting means
  • D03D47/36—Measuring and cutting the weft
  • D03D47/361—Drum-type weft feeding devices
  • D03D47/362—Drum-type weft feeding devices with yarn retaining devices, e.g. stopping pins
  • D03D47/363—Construction or control of the yarn retaining devices

Definitions

• the invention relates to a yarn feeding device according to the preamble part of claim 1.
• the outer diameter of the storage body of a yarn feeding device for a jet weaving machine has to be varied when the pick length is set.
• the stopping device casing contains the stopping device needed for measuring the pick length for each pick.
• the distance between the stopping device casing and the storage body is a vital criterion for the proper function of the yarn feeding device and has to be readjusted whenever the outer diameter of the storage body has been varied. For that reason the stopping device casing is adjustably mounted to the housing of the yarn feeding device.
• Electronic components in the stopping device casing and in the interior of the housing of the yarn feeding device are interconnected by cabling extending through co-actingly aligned openings in the stopping device casing and the mounting region of the housing and through the joint region between the stopping device casing and the mounting region.
• the joint region is prone to the intrusion of contamination and liquids.
• the yam processed by the yarn feeding device is treated with a liquid which tends to intrude into the interior of the stopping device casing and the interior of the housing.
• such yarn feeding devices are used on water jet weaving machines where the operating water tends to seep into all areas of the yarn feeding device. The intrusion of contamination, liquids and particularly water may result in failure of electronic components.
• the sealing assembly provided between the stopping device casing and the mounting region of the housing reliably hinders contamination, treatment liquids and water from intruding through the joint region into the interior of the stopping device casing and/or the interior of the housing.
• the sealing assembly allows the necessary adjusting movements for the stopping device casing and establishes a reliable sealing effect whenever the stopping device casing C is again fixed to the mounting region. While the stopping device casing is moved during adjustment procedures, the sealing assembly functions as a sliding sealing even then preventing the intrusion of contamination, treatment liquids and water.
• the sealing assembly comprises a sealing frame at least partially made from resilient sealing material like rubber or elastomer.
• the sealing frame has the passage for the cabling and can be moved during adjustments relative to the stopping device casing and/or the mounting region such that the adjustment operation is not hindered.
• the sealing frame provides the function of a sliding sealing during the adjustment procedures and establishes a very reliable sealing effect whenever the stopping device casing is again fixedly mounted to the mounting region.
• the stopping device casing is fixed by means of fastening elements which engage into anchors movably provided in the mounting region.
• fastening elements and the anchors expediently are totally separated from the interior of the housing by material of the mounting region.
• the mounting region expediently is provided at a housing flange of the yarn feeding device.
• a carrier plate On the front side of the housing flange a carrier plate is mounted in a fixed position.
• the mounting plate has an opening aligned with the opening of the mounting region.
• the joint region between the carrier plate and the mounting region is sealed.
• the counter sealing surface of the mounting region is provided on the carrier plate.
• the anchors for the fastening elements are contained in the carrier plate and are arranged such that they can be displaced in the adjustment direction of the stopping device casing while the position of the stopping device casing is adjusted.
• the sealing frame may be provided in a fixed position at one counter sealing surface. During adjustment of the stopping device casing a relative sliding motion only will take place between the other counter sealing surface and the sealing surface of the sealing frame.
• the sealing frame is equipped at at least one side with a protruding grommet surrounding the passage of the sealing frame.
• the grommet engages into the opening of the mounting region and/or of the stopping device casing, preferably with a circumferential clearance.
• a guiding groove extending in the adjustment direction and, additionally, an engagement projection mechanically engaging into the guiding groove.
• the guiding groove can be provided either at the side of the counter sealing surface of the mounting region, or beside the counter sealing surface of the carrier plate or even in the counter sealing surface of the stopping device casing, respectively.
• the engaging element then is provided at the other component situated adjacent to the component containing the guiding groove.
• the carrier plate is secured by fastening screws in a fixed position at the mounting region.
• the arrangement allows to reliably seal the contact region between the carrier plate and the mounting region. Guiding slots are formed in the carrier plate.
• the anchors for the fastening elements are provided in the guiding slots such that they can move with the stopping device casing during adjustment operations.
• the anchors which expediently are threaded sleeves, are held in the guiding slots such that they cannot be rotated and also cannot be pulled out.
• the passage of the sealing frame may be smaller than the openings in the mounting region and the stopping device casing, respectively.
• the yarn feeding device having the above-mentioned sealing assembly between the stopping device casing and the mounting region is particularly useful for applications on water jet weaving machines where large amounts of water tend to seep into the joint region.
• the yarn feeding device may contain further interior components or electric parts or connections which need to be protected against the water. For that reasons also other endangered components of the yarn feeding device ought to be protected as well by liquid-tight sealing assemblies.
• Fig. 1 a part of a sectional view of a yarn feeding device
• Fig. 2 a perspective view of details of a special sealing assembly provided at a group of components
• Fig. 3 a perspective view of a stopping device casing as removed from the yarn feeding device and prior to the assembly at the group of components shown in Fig. 2.
• a yarn feeding device F is a so-called measuring feeding device intended for use at jet weaving machines like air jet weaving machines or water jet weaving machines.
• the yarn feeding device has a housing H supporting a stationary storage body B (shown in Fig. 2).
• a winding element W (Fig. 2) is driven for rotation relative to the stationary storage body B in order to form adjacent or separated windings of a not shown yarn on the storage body B.
• the outer diameter of the storage body B is variable.
• a stopping device casing C is mounted to the housing H. The radial distance between the storage body B and the lower side of the stopping device casing C is of vital importance for the proper function of the yarn feeding device F.
• the radial position of the stopping device casing C has to be changed accordingly in the direction of the double arrow A in Fig. 1 in order to adjust an optimum distance between the stopping device casing C and the storage body B.
• the stopping device casing C has a main casing part 1 and a cover lid 2 and contains not shown electronics and magnetic components.
• the casing main part 1 is provided with a plane counter sealing surface 3 which surrounds an opening 4 leading into the interior of the stopping device casing C.
• the housing H of the yarn feeding device F has a front side mounting flange 5 defining a mounting region M.
• the interior 8 of the housing H is closed by a cover lid 6 and contains electronic components like a circuit board 7 and the like.
• Another counter sealing surface 9 is formed on the housing flange 5 and surrounds an opening 10 leading into the interior 8.
• a carrier plate P is mounted with a counter sealing surface 11 in a fixed position to the mounting flange 5.
• the carrier plate P has an opening 13 aligned with the opening 10.
• a further plane counter sealing surface 12 is provided which completely surrounds the opening 13.
• a sealing assembly S is situated between the counter sealing surface 3 of the main casing part 1 and the counter sealing surface 12 of the carrier plate P.
• the sealing assembly S consists of a sealing frame 14, e.g. at least partially made from a sealing material like rubber or elastomer or even from a rigid plastic material.
• the sealing frame 14 has a passage 17 aligned with the openings 13, 10 and 4.
• the passage 17 is surrounded on each side of the sealing frame 14 by a protruding grommet 18.
• the grommet 19 extends with circumferential clearance into the opening 4, while the grommet 18 extends with circumferential clearance through the openings 13, 10 towards the interior 8 of the housing H.
• the passage 17, i.e. in the shown embodiment, the grommets 18, 19 is or are completely surrounded by sealing surfaces 15 and 16 provided on both sides of the sealing frame 14.
• the sealing surfaces 15 and 16 are designed such that in no position of the casing C any open gap will be formed.
• a flat cable 20 and e.g. a multi-lead cable or pneumatic tube 21 extend from the interior of the stopping device casing C through the sealing frame 14 and the grommets 18, 19, if provided, into the interior 8 of the housing H.
• the sealing frame 14 functions as a sliding sealing and is, as soon as the stopping device casing C is fixed in position in the mounting region M, held under sealing tension.
• the sealing frame 14 may be secured in place by not shown means either on the counter sealing surface 12 or on the counter sealing surface 3. Alternatively, the sealing frame 14 may be movable in relation to both counter sealing surfaces 12, 3.
• the stopping device casing C is fixed by fastening elements 25 like screws held in the main casing part 1 and anchors 24, e.g. threaded sleeves, contained in the carrier plate P. Neither the anchors 24 nor the fastening elements 25 penetrate the mounting flange 5 but are totally separated from the interior 8 by material of the mounting flange 5.
• the carrier plate P is fixed to the mounting flange 5 by fastening screws 22 which are located outside of the region of the sealing frame 14.
• Guiding slots 23 are formed in the carrier plate P and extend parallel to the adjusting direction of the stopping device casing C (double arrow A in Fig. 1).
• a guiding groove 25' is formed in the carrier plate as well.
• the guiding groove 25' co-operates with a rib or another engaging element 26 formed in the main casing part 1 (Fig. 3).
• the anchors 24, i.e. the threaded sleeves are apt to move along the guiding slots 23, but are secured against rotation and against being pulled out from the guiding slots 23.
• the threaded sleeves e.g. have diametrically opposed flat regions in their circumferences so that they are hindered from rotating in the guiding slots 23.
• the sealing frame 14 When the stopping device casing C is fixed to the mounting flange 5 by the fastening elements 25 and the anchors 24, the sealing frame 14 even may become compressed.
• the sealing frame 14 is made from a material having good sliding properties such that it is sufficient to only slightly loosen the fastening elements 25 when it is necessary to adjust the stopping device casing C. Even then the sealing frame 14 is fulfilling a sliding sealing function hindering contamination, treatment liquids or water from intruding into the interiors of the housing H and the stopping device casing C, respectively.
• the carrier plate P can be omitted.
• the anchors 24 then would be provided in the mounting flange 5 directly.
• the sealing frame would then co-operate with the counter sealing surface 9 of the mounting flange 5 directly.
• the grommets 18, 19 could be omitted, or at least one of the two grommets 18, 19.
• the sealing frame 14 could be laid into a recess of the carrier plate P or the mounting flange 5, respectively, such that relative movements only take place during adjusting operations between the sealing surface 15 and the counter sealing surface 3.
• the yarn feeding device F is used on a water jet weaving machine it is expedient not only to provide the sealing assembly S between the mounting flange 5 and the stopping device casing C, but also to provide further sealing assemblies for all electric connections and other interior components of the yarn feeding device which need to be protected against the intrusion of contamination, treatment liquids and water.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Looms (AREA)
• Knitting Machines (AREA)
• Forwarding And Storing Of Filamentary Material (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=32173646

Family Applications (1)

Country Status (5)

Families Citing this family (1)

Citations (1)

Family Cites Families (3)

• 2004
  • 2004-04-01 SE SE0400861A patent/SE0400861D0/sv unknown
• 2005
  • 2005-03-15 CN CN2005800098653A patent/CN1938465B/zh not_active Expired - Fee Related
  • 2005-03-15 WO PCT/EP2005/002758 patent/WO2005098114A1/en active Application Filing
  • 2005-03-15 EP EP05716087A patent/EP1730340A1/en not_active Withdrawn
  • 2005-03-23 TW TW94109006A patent/TWI254090B/zh not_active IP Right Cessation

Patent Citations (1)

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