EP1699958A1 - Dispositif sur une machine a tisser a tuyeres permettant l'insertion du fil de trame et cartouche a introduire dans le tube de melange de la tuyere de soufflage principale d'une machine a tisser a tuyeres - Google Patents

Dispositif sur une machine a tisser a tuyeres permettant l'insertion du fil de trame et cartouche a introduire dans le tube de melange de la tuyere de soufflage principale d'une machine a tisser a tuyeres

Info

Publication number
EP1699958A1
EP1699958A1 EP03750287A EP03750287A EP1699958A1 EP 1699958 A1 EP1699958 A1 EP 1699958A1 EP 03750287 A EP03750287 A EP 03750287A EP 03750287 A EP03750287 A EP 03750287A EP 1699958 A1 EP1699958 A1 EP 1699958A1
Authority
EP
European Patent Office
Prior art keywords
mixing tube
clamping
weft thread
cartridge
blowing nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03750287A
Other languages
German (de)
English (en)
Inventor
Adnan Wahhoud
Markus Gielen
Dietmar Von Zwehl
Valentin Krumm
Dieter Teufel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Publication of EP1699958A1 publication Critical patent/EP1699958A1/fr
Withdrawn legal-status Critical Current

Links

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
    • D03D47/3026—Air supply systems
    • D03D47/3053—Arrangements or lay out of air supply systems
    • 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
    • D03D47/3006—Construction of the nozzles
    • D03D47/3013—Main nozzles
    • 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
    • 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
    • D03D47/347—Yarn brakes

Definitions

  • the invention relates to a device on a jet loom, in particular air jet loom with multicolored weft insertion, for inserting the weft into the shed, according to the preambles of claims 1 and 5.
  • the invention also relates to a cartridge as a replaceable component for insertion into the mixing tube of the main blowing nozzle of a jet loom ,
  • Devices on jet looms according to the preambles of claims 1 and 5 are known for example from WO 02/095106 A1.
  • a group of main blowing nozzles is provided, each of which is followed by a mixing tube leading to the shed.
  • An auxiliary blowing nozzle is connected upstream of each main blowing nozzle, the weft thread being introduced into the shed in succession through the auxiliary blowing nozzle, the main blowing nozzle and its mixing tube under the influence of the blowing air.
  • the known device for each main blowing nozzle comprises a clamping device actuated by a pressure medium. They are operated by a special control device.
  • auxiliary blower nozzle By connecting an auxiliary blower nozzle, the compressed air required to insert the weft thread is fed to the weft thread at two points at a mutual distance from one another in the insertion direction.
  • more than one auxiliary blower can also be connected upstream.
  • the weft thread is inserted under the influence of the blowing air.
  • the inserted weft thread is in the shed, ie between the warp threads of the resulting fabric, and is separated from the remaining weft thread that is still in the insertion device by a cutting device.
  • the end of the weft thread located in the insertion device must now be held until the next shot.
  • the clamping device consists of mechanical clamping members in the form of pistons or pressure rams, which are moved pneumatically according to a control system.
  • the pistons or plungers clamp the weft thread against the inner wall of a thread guide channel.
  • the weft thread is thus moved laterally from its central position to the wall of the thread guide channel by a relatively solid component which is moved transversely to the entry direction.
  • the weft thread is subjected to mechanical stress and, on the other hand, its position deteriorates the next time the weft is inserted.
  • the weft should be fed from the mixing tube to the shed in the ideal central position.
  • the clamping device is arranged at the entrance of the main blowing nozzle. The end area of the weft thread provided for the next weft insertion is thus not only moved out of its central position, but is also unguided over a greater length, so that a precise starting position for the next weft is no longer provided.
  • a mechanical clamping device with a drive is also provided, which is described in detail in this case.
  • a spiral spring is arranged, the inner end of which is rotated by an axis which runs parallel to the axis of the mixing tube. The spiral is thus braced across the weft in one plane.
  • Her free end resiliently presses the weft against the fixed support mentioned; the pressing movement takes place transversely to the direction of insertion of the weft thread.
  • the axis that rotates the spiral is driven by two rotary levers via a shaft that is firmly connected to the machine frame.
  • the known clamping device according to EP 0 022 226 B1 has various weak points. If the resilient end of the spiral presses the weft thread against the fixed support with only slight pressure, the weft thread is spared. However, there is a risk that the resilient end of the spiral will be carried laterally and bent over time. With a more stable design of the resilient end or a solid guidance of the entire spiral, on the other hand, there is a fear that the weft thread will be damaged during clamping. In addition, a central guidance of the weft thread in the longitudinal axis of the mixing tube is not guaranteed in this embodiment either. Either the weft thread has to be in constant contact with the support so that it is constantly exposed to sliding and abrasion stress.
  • the invention is therefore based on the object of improving the devices of the type mentioned with the aim that the weft thread is held and guided centrally with as little or no holding air behind the injector of the main blowing nozzle, with a space-saving and vibration-free as possible Construction with a compact multiple arrangement of blow nozzles and mixing tubes is possible and the clamping device works reliably and without wear over longer operating times.
  • a first solution to this problem according to the invention is to provide in a device according to the preamble of claim 1 and according to the characterizing part of this claim that the clamping device is formed by a flexibly designed portion of the mixing tube of the main blowing nozzle which is directly exposed to the pressure medium and is controllable in this way, that the partial area is either compressed by the pressure medium in accordance with its pressurization and thereby clamps the weft thread directly touching it or assumes its release position which forms a free passage cross section.
  • a flexible portion of the mixing tube is thus provided which is directly exposed to the pressure medium.
  • a pressure medium primarily compressed air
  • there is a largely uniform, concentric deformation of this section which thus forms a centrally symmetrical constriction and rests with it directly on the weft thread and finally clamps it.
  • the all-round covering with the flexible material of the mixing tube section means a soft and gentle action on the weft. The feared consequence of modifying, primarily untwisting, does not appear.
  • the device according to the invention works solely by means of the pressure medium and without rigid or fixed mechanical components. As a result, the vibrations of a mechanical drive that interfere with a precise weaving process are largely eliminated.
  • the device according to the invention can be implemented in a very compact design, it can be arranged according to an advantageous development without further ado in the region of the outlet end of the mixing tube located on the main blowing nozzle.
  • the clamping device is a central lock in the form of a pneumatic or hydraulic muscle.
  • a well-known link is therefore used that is safe and tried and tested in its function.
  • a hydraulic muscle creates ideal conditions for keeping the weft evenly and gently.
  • the pneumatic or hydraulic muscle is expediently arranged between a first and a second mixing tube section and connects the two mixing tube sections in a sealing manner, the pressure medium acting on the muscle in a chamber surrounding it.
  • the clamping device thus becomes a simple component that fits into the contour of the mixing tube and can be easily adapted to existing constructions. In this embodiment, it is also easily possible to replace the component if necessary.
  • a pneumatic muscle with compressed air as the medium can be used, an integration into the compressed air system for the blowing nozzles being advantageous for the control.
  • this type of actuation can be used very well for a varied mode of operation, in which holding air is briefly used in the transition to the next weft insertion after being clamped by means of the pneumatic muscle, in order to introduce the weft thread into the shed from an ideal central position as smoothly as possible , Further details on this are described in detail in the PCT patent application of the applicant, which claims the priority of DE patent applications 10243404.2, 10244694.6 and 10256830.8, from the same filing date.
  • a second inventive solution to the stated object is to provide in a device according to the preamble of claim 5- and according to the characterizing part of this claim that the clamping device is arranged in the mixing tube of the main blowing nozzle or directly at the outlet opening of the mixing tube and has two resiliently designed Has lamella-like clamping parts, the free ends of which run in the direction of entry of the weft thread and, depending on their actuation, are either placed against the weft thread in a clamping manner or are ineffective at a distance from one another.
  • Mechanical clamping parts are used in this second solution according to the invention. However, these consist of the free ends of light, lamellar clamping parts, the free ends also running in the direction of insertion of the weft thread.
  • the control and actuation of the lamellar clamping parts is possible in many ways. Piezoelectric means or the electromagnetic action on at least one of the lamella-like clamping parts are well suited. Numerous possible variations on this are in the, the priority of DE patent applications 102 43404.2; ; -10244694.6, 102 56 830.8, 102 56 876.6 and 10256 829.4 claiming, PCT patent employment report of the applicant from the same filing date dealt with in detail.
  • the lamellar clamping parts are enclosed by a pneumatic or hydraulic muscle and are arranged together with this in a mixing tube section, in such an arrangement that, depending on the pressurization of the pneumatic or hydraulic muscle, the latter either does Overcomes the spring restoring force of the lamellar parts and presses their free ends with clamping force against the weft thread or allows the clamping effect to be released under the effect of the spring restoring force.
  • a further advantageous embodiment of the second device according to the invention is that the pneumatic or hydraulic muscle and the lamellar clamping parts are combined to form an exchangeable component in the form of a cartridge which can be inserted into the mixing tube section.
  • the invention also comprises, according to claim 12, a cartridge as an exchangeable structural unit for insertion into the mixing tube of the main blowing nozzle of a jet loom, in particular an air jet loom, the cartridge being designed as a clamping device for clamping a weft thread.
  • Figure 1 illustrates the principle of a first device according to the invention with a clamping device integrated in the mixing tube of the main blowing nozzle.
  • FIG. 2 shows details of the clamping device according to the first solution according to the invention, the clamping device being shown in its release position.
  • Figure 3 is a representation corresponding to Figure 2, but the weft thread is clamped.
  • FIG. 4 explains details of the control on a clamping device according to the first solution according to the invention, the clamped state being shown.
  • FIG. 5 is a representation corresponding to FIG. 4, the clamping device being released.
  • FIG. 6 shows the principle of a device according to the second solution according to the invention when the clamping device is in the clamped position.
  • FIG. 7 is the illustration belonging to FIG. 6 with the clamping device released.
  • FIG. 8a shows the constructively detailed embodiment of the second solution according to the invention in the area of the clamping device.
  • Figure 8b shows the section along the line B-B in Figure 8a.
  • FIG. 9 is a perspective illustration of the cartridge belonging to the device according to FIGS. 8a and 8b and forming an independent structural unit.
  • FIG. 10 contains an example of how several of the devices according to the invention can be combined to form a compact built-in module.
  • a main blowing nozzle 1 and an auxiliary blowing nozzle 3 are provided upstream of this in the weft insertion direction 5.
  • the main blowing nozzle 1 has a compressed air connection 1a and a mixing tube 2.
  • the partially sectioned illustration of the main blowing nozzle 1 shows that it works according to the principle of the injector or a jet pump.
  • the compressed air blown in from the side induces a concentric air flow in the inlet nozzle, which flows around the weft thread 9 and takes it along.
  • the construction of the auxiliary blowing nozzle 3 with the compressed air connection 3a and the mixing tube 4 can be identical to the main blowing nozzle 1.
  • the mixing tube 4 of the auxiliary blowing nozzle 3 ends at a distance in front of the inlet opening of the main blowing nozzle 1.
  • the main blow nozzle 1 and the auxiliary blow nozzle 2 can each individually or together firmly on the Machine frame or be arranged movably with the sley.
  • the arrangement of at least the main blowing nozzle 1 on the movable sley is preferred so that the main blowing nozzle 1 and the associated mixing tube 2 are arranged as close as possible to the shed.
  • FIG. 1 further shows that the mixing tube 2 of the main blowing nozzle 1 is divided into a first mixing tube section 2a and a second mixing tube section 2b.
  • a cutting device 18 is shown schematically at the exit of the weft thread 9 from the second mixing tube section 2b. The cutting device 18 is located between the second mixing tube section 2b and the reed 20.
  • the weft 9 is inserted into a shed, not shown.
  • the shed is formed by a large number of warp threads 10.
  • a pressure sensor 7 is connected to the clamping device 6 and is connected to a control device 13 via a signal line 11. About further signal lines 14 are through the
  • Control device 13 controls valves 8, which in turn are connected to a compressed air source 19 and enable a corresponding air supply via a compressed air line 15 to the clamping device 6 or via a further compressed air line 17 to the compressed air connection 1 a of the main blowing nozzle 1.
  • the signal lines 14 and 11 show the time dependency between the closing and opening of the clamping device 6 and the triggering of a pressure pulse for the
  • the clamping device 6 is released, compressed air is supplied from the compressed air source 19 via the valve 8 shown in FIG. 1 on the left and the compressed air line 17 to the two blowing nozzles 1, 3, the weft thread 9 is carried along by the flowing compressed air, the weft thread 9 concentrically through the Auxiliary blowing nozzle 3, the mixing tube 4, the main blowing nozzle 1 and the mixing tube 2 and the released clamping device 6 are conveyed through and finally entered in the shed.
  • the clamping device 6 is actuated and the weft thread is held clamped in it, so that the inserted end of the weft thread can be separated by means of the cutting device 18.
  • the weft thread is now held in the device until a new entry is made and the clamping device 6 has to be released again.
  • FIG. 2 shows an enlarged sectional view of the clamping device 6 according to FIG. 1 in the released state.
  • the released state is to be understood as the state in which the clamping device 6 does not clamp the weft thread 9, ie the weft thread 9 either for Releases entry or during the entry. However, if the weft thread should not yet be inserted due to the pattern, no holding air is blown in, but the weft thread is clamped according to the invention (see FIG. 3).
  • the weft thread 9 extends through the first mixing tube section 2a, through the clamping device 6 and through the second mixing tube section 2b along the central longitudinal axis of the mixing tube 2.
  • the clamping device 6 connects, so to speak, an airtight mixing tube divided into two by the mixing tube sections 2a and 2b.
  • the clamping device is designed in such a way that in the area of the clamping, the wall of the mixing tube 2 is designed as a flexible piece of hose so that the wall when acted upon by a pressure medium, represented by the arrow in the direction of the inlet into the clamping device 6, is compressed with the pressure P or returns to its original position when the pressure is released.
  • the pressure P m prevails inside the mixing tube.
  • the flexible wall of the clamping device is designed as a pneumatic or hydraulic muscle 16.
  • This pneumatic or hydraulic muscle 16 is surrounded by a chamber 12 which is formed by the housing of the clamping device 6.
  • the pressure medium with the pressure P is introduced into the clamping device 6 into the chamber 6 via the compressed air line 15.
  • P> P m the pressure medium deforms the flexible wall of the pneumatic or hydraulic muscle in the direction of the central longitudinal axis of the mixing tube, as a result of which the weft thread 9 is clamped.
  • the pressure sensor 7 is connected to the chamber 12 and is connected to the control device 13 via the signal line 11.
  • the controlled supply of the pressure medium from the pressure source 19 takes place or the supply of pressure medium is interrupted in order to determine the respective state of the clamping device 6, i.e. Clamping the weft 9 or releasing it, depending on the time of triggering a pressure pulse from the injector 1 of the main nozzle 1, 2 to insert the weft 9 into the shed.
  • the compressed air supply to the injector 1 takes place via the compressed air line 17.
  • Fig. 3 shows the state of the clamping device 6, in which the pressure P of the pressure medium in the chamber 12 is greater than the internal pressure P m in the mixing tube, so that the flexible wall of the pneumatic or hydraulic muscle 16 in the direction of the central longitudinal axis of the mixing tube 2 is deformed to such an extent that the weft thread 9 is securely clamped centrally; its thread tension in the region of the first mixing tube section 2a is therefore maintained in the desired manner. Only the section of the weft thread 9 located in the second mixing tube section 2b then bears against the inner wall of the second mixing tube section 2b without tension when that in the shed thread end is separated by means of the cutting device 18, not shown in Figure 3.
  • the clamping device 6 with the muscle 16 is relatively close to the interface, i.e. is located at the front end of the weft thread 9 in the entry direction 5 and since holding air is largely avoided with the clamping device 6, that is to say essentially no thread modification occurs in the immediate clamping area, the quality of the fabric is therefore high and the waste is low. Only the part of the weft thread that is essentially in the first mixing tube section 2a and has an essentially constant thread tension is woven into the finished fabric later, so that otherwise varying thread tensions causing differences in quality in the fabric are avoided.
  • the gas-tight connection between the first mixing tube section 4 and the second mixing tube section 5 is achieved by an annular collar 21 in the form of a union nut in connection with an O-ring seal 22, which is screwed onto the housing of the clamping device 6 in the axial direction, so that the screwing of the ring collar 21 pressed the seal 22 and thus its sealing effect is achieved.
  • FIGS. 4 and 5 show the modified control of a device according to the invention. Those parts which remain unchanged from the previously described embodiment are identified with the same reference numerals as before.
  • a magnetic directional control valve 23 which is controlled by the control device and connects the chamber 12 of the clamping device 6 to a pressure source via pressure lines 24, 26, is used to actuate the pneumatic / hydraulic muscle.
  • the pneumatic / hydraulic muscle that is to say the flexible and highly elastic partial region of the mixing tube, is compressed symmetrically and uniformly in the direction of the longitudinal central axis of the mixing tube 2 and clamps the weft thread 9 firmly.
  • the solenoid directional control valve is reversed and thereby connects the chamber 12, the pressure line 26 and the connection instruction 27 to a vacuum source 28.
  • the acceleration of the release process means that the weft thread 9, which immediately starts to move, can no longer drag along the flexible and highly elastic wall of the muscle. Damage to the muscle is avoided even after a long period of operation.
  • FIGS. 6 and 7 schematically show the second device designed according to the invention shown.
  • the arrangement of the main blowing nozzle and the auxiliary blowing nozzle and the accommodation of the clamping device in the mixing tube of the main blowing nozzle is the same as in FIG. 1.
  • the clamping device 31 is arranged between a first mixing tube section 35 and a second mixing tube section 36. It has two lamellar clamping parts 34a, b, which are arranged diametrically opposite one another on the first mixing tube section 35 and are made of resilient material. The free ends 38a, b of the lamellar clamping parts 34a, b are aligned in the entry direction of the weft thread, in accordance with the directional arrow 37, and clamp the weft thread 32 between the mixing tube sections 35, 36 approximately in the plane of the longitudinal center axis of the mixing tube 33.
  • the clamping device 31 has a Housing 40 and thus forms a chamber 39.
  • a central lock in the form of a pneumatic or hydraulic muscle 45. It consists of a flexible and elastic material and connects the two mixing tube sections 35 and 36 to one another in a pressure-tight manner.
  • the two lamella-like clamping parts 34a, b are integrated in the pneumatic or hydraulic muscle and exert a spring restoring force on it, which holds the muscle in its initial position. This is shown in FIG. 7 and brings about the release position of the lamella-like clamping parts 34a, 24b, in which the weft thread 32 is not clamped.
  • the housing 40 of the chamber 39 also has a pressure medium connection 46 which is connected to a pressure source 48 via pressure medium lines 49, 50 and a directional valve 47.
  • a pressure medium connection 46 which is connected to a pressure source 48 via pressure medium lines 49, 50 and a directional valve 47.
  • Clamping parts 34a, b to the effect that returns the muscle 45 to its initial position shown in FIG. 7.
  • the return can be accelerated in that in the switch position B of the Directional control valve 47 is connected to a vacuum source, for example to a vacuum pump.
  • the mixing tube 33 and thus also the pneumatic or hydraulic muscle 45 can be placed under pressure from the inside at the same time.
  • the compressed air that is available anyway for the insertion of the weft thread 32 into the shed can serve this purpose.
  • FIGS. 8a, 8b and 9 show how a clamping device belonging to the invention is implemented using technical means.
  • Figure 8a shows a longitudinal section through a mixing tube with the first mixing tube section 35 and the second mixing tube section 36.
  • the chamber for the pneumatic or hydraulic muscle is formed as part of the first mixing tube section 35.
  • the second mixing tube section 36 is a tube on which a coupling sleeve 51 can be rotated and displaced.
  • the coupling sleeve 51 consists of a plastic and is provided with a threaded section on which there is an external thread (at 53).
  • the coupling sleeve 51 has a polygonal section on the outside, which serves to attach a tool when the coupling sleeve 51 is rotated.
  • Polygonal section can e.g. be formed by flats 44 on an otherwise cylindrical part, cf. Fig. 10.
  • the clamping device with the pneumatic or hydraulic muscle already described is inserted into the chamber 39.
  • the clamping device is designed here in the form of a cartridge. This cartridge consists of the cartridge cage 55, the lamellar clamping parts 34a, b and the hose 61, which serves here as a pneumatic or hydraulic muscle.
  • the cartridge cage 55 initially has a short cylindrical guide collar 56 with which it is guided on the inside in the first mixing tube section 35. Following the cylindrical guide collar 56 is a first cone 57, which then merges into an elongated cylindrical central part 58. A second cone 59 adjoins the cylindrical middle part.
  • Two longitudinal slots 60a, b are diametrically opposite one another in the cylindrical middle part 58. Aligned with these longitudinal slots, the two lamella-like clamping parts 34a, b are fastened in the remaining region of the cylindrical guide collar 56. They consist of resilient metal tongues, in any case from a wear-resistant metallic material.
  • the lamellar clamping parts 34a, b are narrower than the longitudinal slots 60a, b and can thus be pressed inward in the direction of the longitudinal central axis of the cartridge cage 55 through the longitudinal slots 60a, b. Under the influence of their spring restoring force, the lamella-like clamping parts 34a, b, however, assume a position which is straight and extends parallel to the outer circumference of the cylindrical central part 58.
  • FIG. 8b in particular shows that the hose 61 maintains a radial distance from the spring-elastic clamping parts 34a, b when the clamping device is released. This applies at least over the largest part of the width of the clamping parts.
  • the lamella-like clamping parts at most lie slightly against the hose with their longitudinal edges. Since a flat contact between the hose and the lamella-like clamping part is avoided in this way, the "lamella-like" clamping parts do not "stick" to the hose either. This avoids hysteresis, and the lamella-like Klertim parts can be controlled very precisely in time from the release position to the clamping position and vice versa.
  • the tube 61 for example a cylindrical tube piece made of silicone, is pushed onto the cartridge cage 55 via the first cone, the cylindrical middle part and the second cone. It is then at a radial distance from the lamellar clamping parts 34a, b.
  • the cartridge cage 55 is then - in FIG. 8a - pushed in the direction from right to left into the chamber 39 of the first mixing tube section 35 until the cylindrical guide collar 56 engages in an adapted cylindrical recess in the first mixing tube section 35.
  • the hose 61 covers the first cone 57 and the second cone 59 and is pressed by them against corresponding conical recesses in the first mixing tube section 35.
  • a contact pressure is applied by tightening the coupling sleeve 51, which, with the interposition of a sealing ring 54, presses the ' * cartridge cage 55 inwards.
  • the axial pressing of the cartridge cage 55 inwards into the first mixing tube section 35 brings about a compressive compression of the hose 61 in the region of the two cones 57 and 59.
  • the cartridge cage 55 is pressed against the end of the second mixing tube section 36, so that it cannot be rotated and cannot be displaced is held in the first mixing tube section 35.
  • the clamping device is now ready for use.
  • the hose 61 is compressed in the chamber 39 by supplying compressed air via one or more pressure medium connections 46. He thus lies inwards against the lamellar clamping parts 34a, b and presses their free ones Ends 8a, b inwards in the direction of the longitudinal central axis of the mixing tube sections 35, 36. A weft thread located in the mixing tube sections is thereby held in a clamped manner.
  • O-rings are designated, which allow a sealing insertion into a fastening module of the jet looms.
  • the injector of the main blowing nozzle located in front of the mixing tube is designated by 65.
  • FIGS. 8a, 8b and 9 The advantage of the construction shown in FIGS. 8a, 8b and 9 is that the cartridge consisting of the cartridge cage 55, the lamellar clamping parts 34a, b and the hose 61 can be quickly removed or replaced at any time. For this purpose, only the coupling sleeve 51 needs to be unscrewed. In the event of blockages due to dust, fluff or in the event of wear of the lamellar clamping parts, remedial action can be quickly taken.
  • FIG. 9 shows particularly well that the cartridge is a compact and relatively simple component.
  • FIG. 10 shows in a spatial representation how several units consisting of main blowing nozzle, mixing tube and clamping device can be combined in groups. According to FIG. 10, six such units are combined.
  • a built-in module 41 which comprises a base part 42 and a fastening plate 43, serves for the summary.
  • each mixing tube 33 consists of the first mixing tube section 35 and the second mixing tube section 36.
  • the clamping device in the form of the cartridge described above with two resilient clamping parts and a pneumatic or hydraulic muscle is inserted into the end region of the first mixing tube section 35.
  • the coupling sleeves 51 are provided with flats 44, which facilitate the attachment of a tool for rotating the coupling sleeves.
  • the grouping of the mixing tubes with their injectors and clamping devices leads to very compact installation modules.
  • a large number of main nozzles and mixing tubes for weaving patterns, in particular multicolor patterns, can thus be easily combined in a small space.
  • the first mixing tube sections 35 are at a greater distance from one another than the subsequent second mixing tube sections 36.
  • the mixing tubes are aligned solely by the conical arrangement of the mixing tubes 33 with respect to the main longitudinal direction 66 on the not shown weft insertion channel of the reed.
  • the fastening plate 43 also extends in this main longitudinal direction 66 or parallel to it.
  • the coupling sleeves 51 which are easily accessible despite the tight assembly, permit the cartridges to be replaced with the hose 61 and the spring-elastic clamping parts 34a, b at any time in a relatively simple manner.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)

Abstract

Dans une machine à tisser à tuyères, une tuyère de soufflage auxiliaire (3), pourvue d'une alimentation en air comprimé (3a) et d'un tube de mélange (4), ainsi que la tuyère de soufflage principale (1), pourvue d'une alimentation en air comprimé (1a) et d'une tube de mélange (2), sont placées l'une derrière l'autre pour permettre une manipulation soigneuse du fil de trame (9). Le tube de mélange (2) est divisé en une première partie (2a) de tube de mélange et en une seconde partie (2b) de tube de mélange. Entre ces deux parties de tube de mélange se trouve un dispositif de serrage (6) destiné au fil de trame (9). Ce dispositif de serrage (6) est relié aux deux tuyères de soufflage (1, 3) et à un dispositif de commande (13) et raccordé à une source d'air comprimé (19) par l'intermédiaire d'un capteur de pression (7), de soupapes (8), de circuits d'acheminement de signaux (11, 14) et de conduites d'air comprimé (15, 17). Lors de l'insertion du fil de trame (9), ce fil traverse, dans le sens d'insertion (5), les deux tuyères de soufflage (3, 1), le tube de mélange (2), le dispositif de serrage (6) ainsi qu'un dispositif de coupe (18) et atteint la foule représentée par des fils de chaîne (10). Ce dispositif de serrage, qui peut comporter un muscle pneumatique ou hydraulique ainsi que des pièces de serrage de type lamelles, permet le traitement de fils de trame très élastiques sur des machines à tisser à jet d'air et évite toute influence négative sur la structure du fil de trame lors du serrage.
EP03750287A 2003-08-28 2003-08-28 Dispositif sur une machine a tisser a tuyeres permettant l'insertion du fil de trame et cartouche a introduire dans le tube de melange de la tuyere de soufflage principale d'une machine a tisser a tuyeres Withdrawn EP1699958A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2003/002857 WO2005026425A1 (fr) 2003-08-28 2003-08-28 Dispositif sur une machine a tisser a tuyeres permettant l'insertion du fil de trame et cartouche a introduire dans le tube de melange de la tuyere de soufflage principale d'une machine a tisser a tuyeres

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EP1699958A1 true EP1699958A1 (fr) 2006-09-13

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EP03750287A Withdrawn EP1699958A1 (fr) 2003-08-28 2003-08-28 Dispositif sur une machine a tisser a tuyeres permettant l'insertion du fil de trame et cartouche a introduire dans le tube de melange de la tuyere de soufflage principale d'une machine a tisser a tuyeres

Country Status (4)

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EP (1) EP1699958A1 (fr)
AU (1) AU2003269682A1 (fr)
DE (1) DE10394346D2 (fr)
WO (1) WO2005026425A1 (fr)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CN103757807B (zh) * 2013-12-31 2016-01-20 南通衣路服装有限公司 导纱器

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
US3831640A (en) * 1972-07-24 1974-08-27 Crompton & Knowles Corp Pneumatic loom
CH649103A5 (de) * 1981-01-13 1985-04-30 Rueti Te Strake Bv Schuetzenlose webmaschine.
DE3446567C1 (de) * 1984-12-20 1986-05-07 Lindauer Dornier Gmbh, 8990 Lindau Schussfadenbremse mit stufenweise steuerbarer Bremswirkung
DE10013625A1 (de) * 2000-03-18 2001-09-27 Dornier Gmbh Lindauer Fadenbremse, insbesondere Schussfadenbremse für Webmaschinen
BE1014191A3 (nl) * 2001-05-21 2003-06-03 Picanol Nv Draadklem voor een weefmachine en weefmachine die dergelijke draadklem bevat.

Non-Patent Citations (1)

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Title
See references of WO2005026425A1 *

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Publication number Publication date
WO2005026425A1 (fr) 2005-03-24
DE10394346D2 (de) 2006-08-31
AU2003269682A1 (en) 2005-04-06

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