Abstract
The invention relates to a yarn treatment device for intermingling multifilament yarns by means of a pulsating air stream that is generated by a rotating cup ring having openings, characterized in that the drive motor and the support of the cup ring are located in the interior of the housing with the air supply channels thereof, and to a yarn treatment device for intermingling multifilament yarns by means of a pulsating air stream that is generated by a rotating cup ring having openings, characterized in that one or more nozzle inserts, through which the pulsating blown air flows, per thread run are arranged on the housing cup
Claims
1. A yarn treatment device for intermingling multifilament yarns by means of a pulsating air stream generated by an orifice ring (2) rotating or rotatable by means of a drive motor, having one or more openings (22) for blow air, characterized in that the drive motor is located in the interior of a base housing (1).
2. The yarn treatment device according to claim 1, wherein the base housing (1) comprises air inlet channels or air supply channels (11).
3. The yarn treatment device according to claim 1, wherein the orifice ring (2) has a bearing (5) which is disposed in the interior of the base housing (1).
4. The yarn treatment device according to claim 1, wherein, for rotation about the base housing (1), the orifice ring (2) is disposed having an inner sealing gap (15) relative to the base housing (1).
5. The yarn treatment device according to claim 1, wherein a drive of the orifice ring (2) is an electric drive with an electric motor in which a rotor (6) of the electric motor is fastened on a shaft (4) on which the orifice ring (2) is seated, and a stator (7) of the electric motor is seated in the base housing (1).
6. The yarn treatment device according to claim 1, wherein one or more recesses (10) are located in the base housing (1) in the area of the electric motor, which recesses are configured for cooling the electric motor by means of circulating intermingling air.
7. The yarn treatment device according to claim 1, wherein additional air outlet holes or chambers (12) are disposed in the base housing (1) in such a manner that radial forces of the compressed air acting on the bearing (5) are completely or partially eliminated.
8. The yarn treatment device according to claim 7, wherein one or more air outlet chambers (12) are disposed mirrored about an axis, each on one side of the axis.
9. The yarn treatment device according to claim 1, wherein the rotor cup or orifice ring (2) is enclosed by a housing cup (3) having openings for the exit of the pulsating blow air.
10. The yarn treatment device according to claim 9, wherein the housing cup (3) is disposed around the orifice ring (2) with an outer sealing gap (16) to the rotor cup or orifice ring (2) which is configured so that the orifice ring (2) can be freely rotated and only minimal quantities of compressed air can escape through the outer sealing gap (16).
11. The yarn treatment device for intermingling multifilament yarns by means of a pulsating air stream generated by an orifice ring (2) rotating or rotatable by means of a drive motor having one or more openings (22) for blow air, wherein said orifice ring (2) is enclosed by a housing cup (3), characterized in that openings (25) for the exit of the pulsating air stream or the blow air or one or more nozzle inserts (26) per thread run, through which the pulsating air stream or the blow air flows, are disposed on the housing cup (3).
12. The yarn treatment device according to claim 11, wherein two nozzle inserts (26) are disposed in a tandem arrangement for intermingling one thread (21) each.
13. The yarn treatment device according to claim 12, wherein spacing of blow holes (B1, B2) of the nozzle inserts (26) is between 30 mm and 70 mm.
14. A method for yarn treatment by intermingling multifilament yarns by means of a pulsating air stream, which exits from one respective blow hole (B1, B2) of multiple nozzle inserts (26) and applies an intermingling pulse to an as yet non-intermingled thread (21), wherein the thread (21) forms an intermingling knot (29), characterized in that multiple nozzle inserts (26) are used in a tandem arrangement and an intermingling or blow air pulse is alternately applied to the thread (21) in a pulsating manner from the blow hole (B1, B2) of one of the nozzle inserts (26), respectively.
15. A method for yarn treatment by intermingling multifilament yarns by means of a pulsating air stream, which exits from one respective blow hole (B1, B2) of multiple nozzle inserts (26) and applies an intermingling pulse to an as yet non-intermingled thread (21), wherein the thread (21) forms an intermingling knot (29), characterized in that multiple nozzle inserts (26) are used in a tandem arrangement and intermingling or blow air pulses are simultaneously applied to the thread (21) in a pulsating manner from the blow holes (B1, B2) of the nozzle inserts (26).
Description
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0028] FIG. 1 shows a cross section through a device with a stationary blow hole
[0029] FIG. 2 shows a cross section through the longitudinal axes of the yarn channels of a device with a stationary blow hole
[0030] FIG. 3 shows excerpt E of FIG. 2
[0031] FIG. 4 shows a top view of a cross section through FIG. 2
[0032] FIG. 5 shows a cross section through a device with a rotating blow hole
[0033] FIG. 6 shows a cross section through the longitudinal axes of the yarn channel of a device with a rotating blow hole
[0034] FIG. 7 shows excerpt F from FIG. 6
[0035] FIG. 8 shows a bottom view of a cross section through FIG. 6
[0036] FIG. 9a shows a yarn with intermingling knots
[0037] FIG. 9b shows a yarn with intermingling knots
[0038] FIG. 10a shows a yarn with intermingling knots
[0039] FIG. 10b shows a yarn with intermingling knots
[0040] FIG. 11 shows a multi-thread intermingling block
DETAILED DESCRIPTION OF THE INVENTION
LIST OF REFERENCE NUMERALS
[0041] 1. Housing
[0042] 2. Rotor cup
[0043] 3. Pot-type case
[0044] 4. Shaft
[0045] 5. Bearing
[0046] 6. Motor rotor
[0047] 7. Motor stator
[0048] 8. Motor line
[0049] 9. Opening for blow air supply
[0050] 10. Annular recess for air cooling
[0051] 11. Air supply channel
[0052] 12. Air outlet chamber
[0053] 13. Thread guide
[0054] 14. Rotor blow hole
[0055] 15. Sealing gap between rotor and housing
[0056] 16. Sealing gap between rotor and rotor cup
[0057] 17. Yarn channel
[0058] 18. Yarn channel insert
[0059] 19. Housing slot
[0060] 20. Opening and closing device
[0061] 21. Thread
[0062] 22. Rotor opening
[0063] 23. Baffle plate
[0064] 24. Yarn channel
[0065] 25. Housing passage
[0066] 26. Nozzle insert
[0067] 27. Thread guide sheet
[0068] 28. Threading slot
[0069] 29. Intermingling knot
[0070] 30. Open spot
[0071] 31. Thread guide pin
[0072] B1 Blow hole 1
[0073] B2 Blow hole 2
[0074] OL Slot length
[0075] BA Hole spacing
[0076] KA Knot spacing
EXAMPLES
[0077] FIG. 1 describes a 3-thread intermingling device having stationary blow holes in a tandem arrangement, shown in cross section. An opening 9 for the blow air supply is located in the housing 1. The blow air flows through an annular recess 10 through the air supply channel 11 into the air outlet chambers 12 and is present at a specific air pressure. The air outlet chambers 12 are opened or closed by the rotating rotor 2 based on position. The blow hole B1 is located on the opposite side of the air outlet chambers 12. When the rotor opening 22 is above the air outlet chamber, compressed air flows through the rotor opening 22 into the blow hole B1 of the nozzle insert. The rotor cup 2 is seated on a shaft 4 and driven by an integrated electric motor. This motor consists of a stator 7, which is mounted into the housing 1, and a rotor 6, which is firmly seated on the shaft 4. The shaft 4 is mounted in a bearing package 5 at its inner diameter. The outer diameter of the bearing 5 is seated in the housing 1. Power is supplied by a cable 8, which is conducted to the outside. The sometimes considerable axial forces which are present due to the air pressure inside the system are almost eliminated by the closed status of the system, since pressure is applied evenly to opposing surfaces.
[0078] FIG. 2 shows the tandem arrangement in a cross section through the axis of the yarn channels 24 of the nozzle inserts. The rotor cup 2 can be seen as a ring in cross section with its openings 22. The air supply channels 11 and air outlet chambers 12 are visible in the housing 1. Two chambers 12 are disposed opposite the blow holes B1 and B2, two chambers 12 are in a mirrored position on the bottom side of the housing 1. These make it possible to almost eliminate the forces which act radially due to the air pressure onto the rotor cup 2 at the air outlet chambers 12. The view represented shows the device with a pneumatic cylinder 20, which opens the baffle plates 23 terminating the yarn channels 24 and the thread guide sheets 27 with the thread guides (not shown) for thread placing and closes them again for intermingling.
[0079] FIG. 3 shows an excerpt of the nozzle body arrangement in a cross section through the longitudinal axis of the yarn channel 24. In the position of the rotor cup 2 shown, compressed air is applied to the blow hole B1. The compressed air flows from the air outlet chamber 12 through the rotor opening 22 into the blow hole B1 and generates an air pressure pulse acting on the yarn 21, which runs through the yarn channel 24. In the subsequent nozzle insert 26 with the blow hole B2, the air supply is closed by the rotor cup 2. It will be opened when the rotor opening 25 is located above the blow hole B2 after turning the rotor cup and the present compressed air also generates a compressed air pulse acting on the yarn 21. At the same moment, the blow hole B1 is closed. The spacing BA of the blow holes is preferably dimensioned such that the yarn length between the two blow holes corresponds to a factor 1.5 of the distance selected between two intermingling knots. It is preferably between 30 and 70 mm. The spacing of the rotor openings is selected such that compressed air is preferably applied to only one of the blow holes. To enable the rotor cup to rotate freely without making contact with the material of the housing 1 or the housing cup 3, the respective diameters are configured to create a gap 15 and 16 between the stationary parts and the rotating cup. The gap, however, is minimized to ensure that as little compressed air as possible can flow into the blow holes when the blow channel is closed by the rotor wall.
[0080] FIG. 4 shows a top view of a cross section through the intermingling device when opened for thread placing. 3 thread runs 21 and the open yarn channels 24 as well as the blow holes B1 and B2 are visible.
[0081] FIG. 5 describes a 3-thread intermingling device having a rotating blow hole, shown in cross section. The internal structure is similar to that of FIG. 1. An opening 9 for the blow air supply is located in the housing 1. The blow air flows through an annular recess 10 through the air supply channels 11 into the air outlet chambers 12 and is present at a specific air pressure. The air outlet chambers 12 are opened or closed by the rotating rotor 2 based on position. Unlike FIG. 1, the blow hole 14 is located in the rotor. When the rotor blow hole is above the air outlet chamber 12 on the side of the yarn channel 17, compressed air flows through the rotor blow hole 14 into the yarn channel 17. The yarn channel insert 18 is opened for placing the thread and closed for intermingling by means of the pneumatic cylinder 20. An open variant (not shown) in which the thread is threaded through a slot is also conceivable here.
[0082] The air outlet chambers are arranged at a 180 offset in this case as well and reduce the considerable radial forces which act on the bearing. The sometimes considerable axial forces which are present due to the air pressure inside the system are almost eliminated by the closed status of the system as described in FIG. 1, since pressure is applied evenly to opposing surfaces.
[0083] FIG. 6 shows the device with a rotating blow hole in a cross section through the longitudinal axis of the yarn channel insert 18. The compressed air passes through the air supply channel 11 into the air outlet chamber. When the rotor hole 14 is above the air outlet chamber 12 and the housing slot 19, compressed air can pass through the rotor hole 14.
[0084] FIG. 7 shows an enlarged portion of FIG. 6. The rotor hole 14 is in the area of the air outlet chamber 12, and the blow air flows into the yarn channel 17 in the area of the opening slot OL. The yarn 21 which passes through the yarn channel 17 receives a compressed air pulse through the rotor hole 14 when it enters the opening slot, until the rotor hole 14 dips into the housing 1 again. The length of the opening slot OL preferably corresponds to the desired spacing of the intermingling knots, e.g. 33 mm of slot opening length for desired 30 knots/m. The speed of the rotor cup 2 at the outer diameter preferably matches the yarn speed through the device. The thread 21 runs across thread guide pins 31, which prevent it from coming into direct contact with the rotor cup 2 or the housing 1.
[0085] FIG. 8 shows a cross section through the device which is opened for thread placing. Visible are the three opening slots 19 and the rotor holes 14, which are disposed at a radial offset from each other. The offset arrangement helps distribute pulse forces which act on the rotor cup 2 and the bearing 5.
[0086] FIG. 9a shows a schematic view of the operation of a tandem arrangement. The as yet non-intermingled thread 21 receives an intermingling pulse from the blow hole B1, and an intermingling knot 29 forms upstream and downstream of the blow hole B 1. At the same time, the blow hole B2 is closed. There is an open spot 30 between the two knots 29.
[0087] In FIG. 9b, the blow hole B1 is now closed and the blow hole B2 is open. The spacing of the blow holes BA is dimensioned such that the intermingling pulse of the blow hole B2 preferably creates the open spot 30 between two intermingling knots 29 and thus once again generates the knots 29. Ideally, the blow hole spacing is 1.5 times the knot spacing and should be in the range from 1.2 to 1.8 times the knot spacing.
[0088] FIG. 10a shows an arrangement in which the intermingling pulse is given at the same time from the blow holes B1 and B2. The pulse from blow hole B2 is directed into the open spot.
[0089] FIG. 10b shows the arrangement when the air is supplied at the same time. The spacing of the blow holes BA preferably is 2 times the knot spacing and should be in the range from 1.7 to 2.3.
[0090] FIG. 11 shows a multi-thread intermingling block. The nozzle inserts 26 have a threading slot 28 for placing the thread in the yarn channel 24. The intermingling air flows from the air supply channel 11 into the air outlet chamber 12, then through the rotor opening 22 and the blow hole 25 into the yarn channel. This arrangement can also be implemented using two or more nozzle inserts connected in series. Furthermore, a similar variant (not shown) with an open threading slot can be implemented in a single nozzle.
[0091] The variant with open nozzle inserts for threading without extra mechanisms is particularly used in spinning processes in which the machine operators are not used to opening and closing mechanisms.
