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
  • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
  • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
• • 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
  • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
  • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
  • D03D47/3026—Air supply systems
  • D03D47/306—Construction or details of parts, e.g. valves, ducts
• • 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
  • D03D47/28—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed
  • D03D47/30—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein the weft itself is projected into the shed by gas jet
  • D03D47/3026—Air supply systems
  • D03D47/3053—Arrangements or lay out of air supply systems

Definitions

• the invention relates to an air supply block for a weaving machine with channels arranged between the inlet and outlet and valves which can be switched and / or adjusted by means of valve drives.
• An air supply block of the type mentioned is known from WO 97/29231.
• the air supply block is arranged between a compressed air supply device and a pair of main blowing nozzles which insert a weft thread into a shed.
• the known air supply block contains an inlet connected to the compressed air supply and an outlet connected to the pair of main blowing nozzles.
• the inlet and outlet are connected to each other by means of channels in the air supply block, a switchable closing valve and an adjustable throttle valve being integrated in the air supply block. If a weaving machine is to process a larger number of different weft threads, a correspondingly large number of pairs of main blowing nozzles and also a correspondingly large number of air supply blocks are required.
• the invention has for its object to design an air supply block of the type mentioned in such a way that a relatively large number of main blowing nozzles can be supplied with compressed air, without requiring a very large installation space for the compressed air supply.
• This object is achieved in that two outputs are provided on a longitudinal side of an essentially cuboid base body, each of which is assigned its own valve.
• the invention offers the advantage that two sets of main blowing nozzles can be supplied with compressed air by means of an air supply block, so that the installation space required is relatively small.
• air supply blocks are particularly well suited for use in air jet looms in which several different weft threads are processed.
• the base body is free of inputs, outputs and valve drives on two opposite longitudinal sides. This makes it possible to mount the air supply blocks close together, so that the space requirement can be further reduced.
• the input or inputs, the channels and the outputs are arranged essentially in a common longitudinal plane of the base body. In this way, the width of the base body of the air supply block can be limited in the transverse direction, so that a relatively large number of such air supply blocks can then be accommodated in a relatively small space.
• FIG. 1 shows a plan view of a plurality of air supply blocks arranged side by side
• FIG. 4 shows a section similar to FIG. 2 through a further embodiment
• FIG. 5 shows a section similar to FIG. 2 through a further modified embodiment
• FIG. 7 shows a section similar to FIG. 2 through a further embodiment
• FIG. 8 shows a section similar to FIG. 7 of a further embodiment
• Fig. 9 shows a section of a further embodiment
• FIG. 10 shows a section similar to FIG. 2 through a further modified embodiment.
• the air supply block 1 shown in FIGS. 1 to 3 for an air jet loom has a cuboid base with a rectangular cross section, which has two compressed air inlets 2 and 3, which are located on a long side 4. Two compressed air outlets 5 and 6 are located on the opposite long side 7.
• the long side 4 is the bottom in the embodiment shown, while the long side 7 is the top of the air supply block 1.
• the air supply block 1 contains channels 8, 9 and 10, which connect the inlet 2 to the outlet 5.
• channels 11, 12 and 13 connect input 3 to output 6.
• a switchable closing valve 14 and an adjustable throttle valve 15 are arranged between the inlet 2 and the outlet 5.
• a switchable closing valve 16 and an adjustable throttle valve 17 are arranged between the inlet 3 and the outlet 6.
• the two inputs 2 and 3, the two outputs 5 and 6 and the channels 8 to 12 are essentially arranged in a longitudinal plane 24 of the feed block 1.
• This longitudinal plane 24 runs perpendicular to the longitudinal sides 4 and 7 mentioned.
• the two exits 5 and 6 are arranged at a smaller distance from one another than the two entrances 2 and 3.
• 7 in the longitudinal plane 24 In the middle 25 are the inlet 2, the outlet 5 and the channels 8, 9 and 10 mirror-symmetrical to the inlet 3, the outlet 6 and the channels 11, 11 and 13.
• the channels 8 to 13 are, for example, bores machined into the air supply block 1.
• valve drives 20 of the two switchable closing valves 14 and 16 are located on the longitudinal side 4 of the base body between the inputs 2 and 3. They are also located in the longitudinal plane 24 already mentioned and are also arranged mirror-symmetrically to the center 25.
• the switchable closing valves 14, 16 are each assigned a valve seat 26, which belongs to the channel 9 or 12.
• a valve tappet 18 is pressed against the valve seat 26 by means of a spring 19 in order to shut off the connection between an inlet 2 or 3 and an outlet 5 or 6.
• An electromagnet which is assigned to the valve tappet 18 and lifts off the valve seat 26 in order to open the valve, serves as the valve drive 20.
• the valve lifters 18 of the closing valves 14 and 16 each lie in the extension of the associated outlet 5 and 6 and run parallel to one another.
• the adjustable throttle valves 15 and 17 each have a spindle 21 which is axially adjustable by means of a linear motor 22. The end 23 of the spindle 21 protrudes into the associated channels 10 and 13.
• the compressed air flowing from the inlet 2 to the outlet 5 or from the inlet 3 to the outlet 6 becomes throttled by changing the flow cross-section of the respective channel 10 or 13, as described in WO 97/29231.
• the throttle valves 15 and 17 and in particular the spindles 21 are also in the longitudinal plane 24 already mentioned and are also arranged mirror-symmetrically to one another with respect to the center 25.
• An electrical plug connection 31 is arranged on the housing of the linear motor 22 of the throttle valve 17. Electrical lines 32, 33, 34, 35 lead from the plug connection 31 to the closing valves 14, 16 and the throttle valves 15, 17. An electrical cable (not shown) is connected to the plug connection 31 and leads to a control unit of the weaving machine.
• the use of only one plug connection 31 for both closing valves 14, 16 and both throttle valves 15, 17 is advantageous for mounting the air supply block 1 together with the associated parts on a weaving machine and for making the necessary electrical connections.
• the electrical lines 32, 33 and 34 are laid in a longitudinal groove 38 which is provided in the longitudinal side 7 forming the upper side. The lines 32 and 33 are each led through a bore 36 and 37 of the air supply block to the valve drives 20 of the switching valves 14, 16.
• a plurality of air supply blocks 1 are each fastened with screws 28 on a compressed air container 27.
• the compressed air tank 27 is provided in its center with a groove-like depression into which the valve drives 20 of the switching valves 14 and 16 protrude.
• the pressure Air tank 27 several outputs 29, 30, to which the inputs 2, 3 of an air supply block 1 connect.
• four air supply blocks 1 are mounted on the compressed air tank 27.
• the outlets 29 and 30, in the area of which no air supply block 1 is attached, are closed with plugs 43.
• Sealing means are provided for the closing valves 14, 16 and for the throttle valves 15, 17, which prevent compressed air from flowing out of the supply block 1 in this area.
• screws 66 are also provided to fasten the valve drives 20, 22 to the air supply block 1.
• the outputs 5, 6 are provided with connections 41, 42 which are only shown schematically and which are glued to the air supply block 1, for example. These connections 41, 42 are used to connect lines which lead to one or a pair of main blowing nozzles connected in series. In a modified embodiment, connections 41, 42 are provided, which are screwed into the corresponding threads of the outputs 5, 6 with threaded approaches.
• an air supply block 1 with relative Create a smaller width B in the transverse direction so that a compact arrangement of several such air supply blocks 1 is possible.
• the air supply blocks 1 with two outlets 5, 6 and associated valves are particularly suitable for use in an air jet loom.
• air jet weaving NEN it is advantageous to provide an even number of main blowing nozzles, since the same type of weft thread is supplied, for example, by two bobbins and is thus entered into a shed by two main blowing nozzles or two pairs of main blowing nozzles connected in series in accordance with the disclosure of WO 97/29231. If an odd number of outputs is nevertheless desired, it is easily possible to close one of the outputs 5 or 6 with a sealing plug.
• the control can also be designed so that the associated closing valve 14 or 16 remains permanently closed.
• the outlets 5 and 6 are arranged at a distance from one another which corresponds, for example, to the distance from the inlets to the main blowing nozzles, as is disclosed, for example, in the not previously published Belgian patent application BE 9700465 corresponding to the applicant's WO 98/54 385.
• the air supply blocks 1 are therefore particularly suitable for use with main nozzle devices, as are disclosed in the Belgian or international patent application mentioned.
• bores 44, 45 are connected to the outputs 5, 6, which in turn are connected to bores 46, 47 leading to the longitudinal side 7.
• the bores 44 and 46 are mirror-symmetrical to the bores 45 and 47 with respect to the center 25.
• the ends of the bores 44 and 45 are closed by means of sealing plugs 48, 49.
• the bores 44 to 47 are also essentially in the longitudinal plane 24 of the air supply block 1.
• the bores 46 and 47 are provided with connections 50, 51 for lines (not shown) which are glued to the air supply block 1, for example. Compressed air at relatively low pressure can be supplied via the holes 46 and 47, for example, which then flows via the holes 44 or 45 to the outlet 5 or 6.
• a pressure sensor can also be attached to the bores 46 or 47, to measure the pressure of the compressed air flowing out of the air supply block 1.
• FIG. 5 and 6 show a modified embodiment similar to FIG. 4, in which bores 52, 53 and 54 are guided to the outlet 5, the bores 52 and 53 being closed at their ends with sealing plugs 55, 56.
• the bores 52, 53, 54 lie somewhat outside the longitudinal plane 24 mentioned. However, since they have relatively small dimensions, they have little influence on the overall width B of the air supply block 1. This width is essentially determined by the valve drives and / or the seats 26 the closing valves 14, 16 determined.
• FIG. 7 shows an exemplary embodiment in which the air supply block 1 has two inputs 2 and 3 and two outputs 5 and 6, which are each connected to one another via channels 62, 63 and 64, 65. These channels are all in the same longitudinal plane 24 of the feed block 1 and are arranged mirror-symmetrically to the center 25.
• a valve stem 59 is provided in each of the channels 62, 64 for a valve spindle 61, which together with valve drives 60 designed as linear motors each form a throttle valve 57, 58.
• These throttle valves 57, 58 are, for example, of the type described in WO 96/08668.
• the air supply block 1 of FIG. 7 is mounted on a compressed air container 27 in accordance with the embodiment of FIG. 1.
• the outputs 5 and 6 are each provided with a connection 41, 42 to which lines, not shown, are connected.
• Such a line can be connected, for example, to a connection 50 or 51 of the air supply block 1 of FIG. 4 in order to pass compressed air with a low pressure, which is throttled by the throttle valve 57 or 58, through these lines and the bores 44, 46 or 45, 47 to the Outputs 5 or 6 of the air supply block 1 of Fig. 4 to conduct.
• the air supply block 1 according to FIG. 7 is mounted on the compressed air container 27, on which one or more air supply blocks according to FIG. 4 are also mounted.
• the one or more air supply blocks according to FIG. 7 are mounted on their own compressed air tank, so that the air pressures in the compressed air tanks can already be predetermined in a suitable manner.
• FIG. 9 shows an embodiment similar to FIG. 7, in which the components that correspond to FIG. 7 have been given the same reference numbers.
• the air supply block 1 has only one inlet 70 for compressed air, which is provided in the longitudinal plane 24 in the middle 25.
• An outlet 69 of a compressed air container 71 is provided in this area.
• a channel 68 branches off from the input 70 on both sides, which is connected to the output 5 via a channel 63 and to the output 6 via a channel 65.
• Valve seats 59 to which the valve spindles 61 of the linear motors 60 of the two throttle valves 57, 58 are assigned, are arranged in the channel 68.
• the air supply block 1 contains only one entrance 72 for compressed air, which lies in the longitudinal plane 24 of the air supply block 1.
• This inlet 72 is connected to an outlet 76 located in a side wall of the trough-shaped recess of the compressed air tank 72.
• the input 72 is connected to the output 5 via channels 74, 8, 9 and 10 and to the output 6 via channels 74, 8, 9, 75, 12 and 13.
• the channel 75 connects the channels 9 and 12.
• the channel 74 connects the inlet 72 to the channel 8.
• the end of the channel 74 is closed with a plug 77.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Looms (AREA)
• Multiple-Way Valves (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=3891297

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (4)

Citations (2)

Family Cites Families (11)

• 1998
  • 1998-06-10 BE BE9800447A patent/BE1012032A3/nl active
• 1999
  • 1999-05-28 EP EP99926451A patent/EP1086265B2/de not_active Expired - Lifetime
  • 1999-05-28 WO PCT/EP1999/003687 patent/WO1999064651A1/de not_active Ceased
  • 1999-05-28 JP JP2000553639A patent/JP4662627B2/ja not_active Expired - Fee Related
  • 1999-05-28 DE DE59901871T patent/DE59901871D1/de not_active Expired - Lifetime
  • 1999-05-28 CN CN99807149A patent/CN1097107C/zh not_active Expired - Lifetime
  • 1999-05-28 KR KR10-2000-7013137A patent/KR100528079B1/ko not_active Expired - Fee Related
  • 1999-05-28 US US09/701,579 patent/US6305433B1/en not_active Expired - Fee Related

Patent Citations (2)

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