KR100754539B1 - Device for the production of loop yarn and air jet texturing nozzle - Google Patents

Abstract

The present invention relates to an apparatus for producing loop yarns and to an air jet texturing housing, comprising a texturing nozzle and a nozzle core that can be driven for rotational movement relative to the air jet texturing housing. The drive mechanism consists of an electric or pneumatic nozzle core drive mechanism and is integrated as a unit in the nozzle casing.

Description

Loop yarn manufacturing equipment and air jet texturing nozzles {DEVICE FOR THE PRODUCTION OF LOOP YARN AND AIR JET TEXTURING NOZZLE}

The present invention relates to a loop yarn manufacturing apparatus having a nozzle core having an air injection nozzle and at least one air supply hole that can be driven for rotational movement with respect to the nozzle housing. .

Such loop yarns are made with air jet yarn nozzles. Reference is made to European Patent Publication No. 0 088 254. The main parts of the whole device,

A nozzle core with a yarn treatment channel,

An air jet twist housing with compressed air connection,

A guide body located at the exit of the twisted channel.

In the continuous heat treatment channel, holes located along the radial direction to feed the compressed medium are communicated. The channel has a convex arched outlet that projects outward and has a spherical or hemispherical derivative that protrudes to the outlet end and forms an annular clearance with the channel. The outer diameter of the exit opening preferably corresponds to at least four times the channel diameter and at least 0,5 times the diameter of the derivative. This achieves an optimum twisting effect that ensures high stability of twisting yarns, high mixing of individual filaments, and a uniform twisting composition.

This quality solution has been proven very well over the course of 20 years in the manufacture of particularly soft yarns. As a further alternative according to German Patent Publication No. 196 05 675, the Applicant has been able to significantly increase the feedrate of the processing yarn by the yarn processing channel. The most important improvement was to change the shape of the outlet cone of the continuous shooting channel. As the feed rate increases, the problem of contamination gradually emerges.

European Patent Publication No. 1 022 366 proposes to continue to drive the nozzle core in this state for partial suppression of contamination. The results of the actual tests show that the cleaning interval can be significantly extended.

It is known that the yarns are treated in various ways directly after spinning. For example, oily substances, antifungal agents, calcium salts, magnesium salts, and water are administered to the burst. These materials adhere to the inlet and outlet of the twisted channel, among other things, in operation. This contaminant attachment changes with increasing flow of the injection air. Accordingly, the nozzle cores must be cleaned at relatively short time intervals. The wash cycle is actually 1 day to 8 days, thus requiring a break in production. By virtue of the continuous rotational movement according to EP 1 022 366 the washing interval can in fact be extended several times. For the increasing costs of rotating nozzle cores, the cost of cleaning and production outages is expected to be recovered in a very short time. EP 1 022 366 proposes to rotate the nozzle core or the entire nozzle housing. In a nearly approximate way, one drive motor is proposed for a significant number of nozzle cores for the vast majority of parallel burst movements. This allows all nozzle cores or nozzle housings to be driven simultaneously by an overdriver to one single motor. This, on the one hand, has a great advantage. However, from the point of view of manufacturing a machine, there is a disadvantage in that the space required for it in the machine must be provided. The main disadvantage is, first of all, the almost impossible installation of additional components in the future.

Another problem is that, for example, when the nozzle housing rotates, the conventional configuration with derivatives is completely unnecessary.

According to the present invention, there are three problems. First, new housings have to be developed that allow for continuous development at least with respect to other requirements. Secondly, it is necessary to find new solutions applicable by various machine manufacturers without the aforementioned disadvantages. Third, structural new products should not adversely affect the quality of the loop yarn. The device according to the invention is characterized in that the drive device for rotational movement of the nozzle core is integrated as an assembly unit in the nozzle housing as an electrical or pneumatic drive device.

The nozzle housing according to the invention is of a two-segment type, with a pressure connection in one housing part and at least one other component in the other housing part and forming one component unit as a whole.

The inventor has recognized that it is very disadvantageous to provide enhanced functionality with additional structural devices in industrial textile technology applications. However, the air-jet twisted housing as a metal body to date can make disassembly difficult later. The new solution emerges as two solutions. The air jet twist housing consists of a structural unit with all essential integral functions. At the same time, the basic structure of the two-part type frees the dismantling which was impossible until now. The new nozzle housing, together with the integration of the drive unit, constitutes a development stage in the sense of the present invention. The invention below provides a wide variety of advantageous and advantageous forms.

The electric drive device preferably consists of an electric motor, in particular a DC motor, which is flanged to the housing, in which the electric motor is in particular equipped with a planetary reducer and a worm motor. This makes it possible to reduce the optimum speed to a nozzle core drive in the nozzle housing by means of a relatively high speed rotation without the use of a gear reducer, for example as in EP-A-022 366.

According to another particularly preferred form, an electrical connection is provided in the nozzle housing which is liberated by galvanic plating for control of a low voltage electric motor. The housing is also arranged with insertable compressed air connections. At the same time the contact plug connections are arranged along the parallel axis such that they are connectable or detachable by plug movement of the electrical and compressed air connections.

 Nowadays, the company is successfully seeing this invention because the Loop's manufacturing equipment can be plugged in or unplugged like an electric shaver to ensure full functionality. This is furthermore redundant in the case of new devices, since the compressed air connections are plugged together like electrical connections and are ready for operation within seconds without fear of malfunction.

According to one further aspect, the swivel arm with the forward and backward movable derivative is fixed to the housing such that the derivative stops in the operating position with respect to the nozzle core rotating relatively. According to this, the new solution has two advantages. On the other hand, the nozzle core is in contact with the nozzle housing to facilitate the sealing of compressed air of, for example, 6 to 14 bar by driving the nozzle core. On the other hand, the nozzle housing and the stationary derivative increase the cleaning effect through the twisted yarn. Forcing is fed through a narrow gap so that the highly complex conical outlet area of the twisting channel is cleaned better by, for example, continuous rotational movement of the nozzle core at 5 rpm.

Various tests have shown that the best results are obtained in a relatively narrow range of rotation of the nozzle core as the nozzle core continues to rotate. 2-10 rpm is especially preferable, and 4-6 rpm is especially preferable. By adjusting the derivative, the exit clearance between the nozzle outlet and the derivative can be optimized for cleaning problems as well as for the actual twisting process.

According to another aspect, in the case where there are a plurality of nozzle cores in a parallel operation manner, the driving of each driving device of the nozzle cores is characterized by being controlled by a bus line from one central control unit.

According to another solution, the drive device is characterized in that it comprises a ratchet drive which is driven by coils or by compressed air and which is integrated with the air blasting yarn housing. As a two-division of the air-jet twisted housing, the nozzle core is arranged with the overdriver, in particular a guide body, in one housing part and another housing part. Both housing portions form one unit. This makes it possible to simultaneously connect and release the compressed air joint like the electric plug connection.

According to another very preferred embodiment, the nozzle core is driven by an overdriver sleeve fixedly disposed in the nozzle housing, wherein the nozzle core is easily assembled and disassembled from the overdriver sleeve, which is particularly preferred. The nozzle core has air supply holes arranged on at least one, in particular three, circumference and the overdriver sleeve has air holes evenly distributed over a plurality of circumferences. Practical test results in industrial applications indicate that compressed air must be entirely addressed by the rotating nozzle core. Air flow should not be interrupted periodically because the pulses on it are detrimental to the quality of loop formation. With the proposed filter type air supply this problem can be solved surprisingly well. The air holes of the overdriver are arranged in at least two biased rows, in which compressed air is supplyable from the compressed air joint via the annular space of the nozzle housing. The nozzle core is preferably formed in a two-part type and has an inner nozzle element and an inner ceramic element that are easily assembled and disassembled into the overdriver sleeve as a unit.

Hereinafter, the present invention will be described in detail with reference to a series of embodiments.

1A-1C are various perspective views of a novel air jet burst nozzle appearance without a nozzle core drive.

1D is a schematic diagram of the adjustment of an enlarged derivative.

2A to 2C are two-part detail views of the air jet yarn housing.

Figure 3 shows a first shape of a nozzle core drive in the form of a ratchet driver.

Figure 4 is a process diagram of the cleaning effect by the derivative in the case of a rotating nozzle core.

Fig. 5 is a diagram showing specific shapes of the nozzle core drive device and the air jet burst nozzle.

6A and 6B are two different perspective views of FIG. 5.

7A and 7B are partial sectional views of the air jet burst nozzle.

8 is a control conceptual diagram of a plurality of air jet burst nozzles and a nozzle core drive device arranged in parallel.

Fig. 9A is a sectional view of an air jet twist nozzle.

9B is an enlarged view of the overdriver sleeve.

Fig. 9C is a IX view of Fig. 9B.

Fig. 10A is an enlarged view of the compressed air supply form by the overdriver to the air supply hole of the nozzle core.

10B is an actual view of an overdriver sleeve.

11 is a view showing another shape of the nozzle housing.

12 is a view of a two split nozzle core.

1A-1C are perspective views of the nozzle housing 1 viewed from various sides. The nozzle housing is made of die casting and has a housing top 2 and a housing bottom 3. A compressed air plug connection 4 is attached to the housing lower part 3 by a negative portion 5 and a positive portion 6. Both parts 6 are fixed to the machine by screw fastening portions 7 such that the nozzle housing 1 is attached to the machine in a fixed position by a plug connection on the air side. Both housing parts 2, 3 are fixedly connected to one component unit by screws 8. In the upper part of the housing 2 a turning arm 9 is connected by means of a fitting 10, and in the lower part there is a derivative 11 shown in the normal driving position in all of Figures 1A-1C. In Fig. 1d, the derivative 11 is enlarged and the holder head 12 is shown in cross section. The ball type derivative or repellent body 11 is guided to the holder head by the fixing pin 13 and grips the clamping head 14. The fixed head 14 is provided with a plurality of pawls 15 (detents) chamfered on the rear surface thereof, which are disposed in the recessed grooves 16 of the holder head 12. On the other side, it can be seen that the fixing head 14 is pressed and fixed to the holder head 12 or the concave groove 16 by screws not shown here. Now when the fixing screw 17 is loosened, at the same time the fixing action of the fixing pole 15 is released, and the fixing pin 13 is adjustable to reach the desired precise position along the arrow 19 and a hexagon wrench. It can be fixed by turning the fixing screw 17 using. For accurate positioning, the nozzle core 26 is removed from the nozzle housing and a distance gauge is fitted, which fits the nozzle core into place, which allows the derivative 11 to reach the distance gauge and stop in the fitting position. The screw 17 is tightened. After reassembly of the nozzle core 26 the device is ready for operation.

As shown in Fig. 4, the repellent body 11 is pushed into the outlet opening 20. Along the arrow 21 as well as forcibly turning along the arrow 21 in the fitting 10 so that the repellent body 11 does not contact the surface 22 of the nozzle core 26 in the region of the outlet opening 20. The actual movement of the turning rock 9 is made to facilitate the movement (Fig. 4).

Fig. 1A shows the nozzle housing 1 on the yarn feed side with a yarn guide 23. Figs. The inlet opening 24 of the twisting channel 25 is only partially visible. 1B and 1C show the exit side of the twisted channel. The nozzle core 26 is only partially visible and held in position by a locking bar 27.

2A to 2C show a two split nozzle housing in three side views in terms of design. These three side views further illustrate one nozzle core drive device 30 and are indicated by lines with electrical connections 31 and negatives 5 for compressed air connection.

3 shows a ratchet driver 40 of the nozzle core 26. The ratchet driver consists of a ratchet wheel 41 and a gear drive 42 therefor. The gear drive is by means of coil 43 or by compressed air. 3 shows the drive by the electric coil 43. Power supply is by means of an electrical plug 44.

FIG. 4 shows schematically the key functions of the new solution by rotating nozzle core 26 along arrow 45. A filament yarn 46 enters the inlet 47 of the yarn channel 25 and is discharged from the air jet yarn nozzle 50 as yarn yarn 46 ^* via a gap 48. The direction of continuous shooting movement is indicated by an arrow 49. Compressed air PL is supplied to the twisting channel 25 via a plurality of injection holes 51 in accordance with the spinning principle, at which point filament bonds are released to create a loop in region 53. Due to the rotational movement of the nozzle core 26, the passing position of the twisted yarn 46 ^* always changes with respect to the nozzle core 26, whereby the outlet opening is cleaned very efficiently.

Figure 5 illustrates the simultaneous combination and specific texture of the resulting yarn 55 and stay yarn 56 and vertical yarn 46 ^* .

6A and 6B show a rotary nozzle core 26 type air jet twist apparatus 60 having a plug type air connection 61 and a plug type electrical connection 62. Of particular importance in the solution according to Figs. 6A and 6B and 7A and 7B is the parallel arrangement of both plug-type connections, which are indicated by parallel axes 63 and 64. The air jet twist apparatus 60 can be easily inserted into the air jet twist apparatus without the need for a special tool for production operation with a moderate force of the hand, or can be unwound perpendicular to the plane 65 for maintenance work. The nozzle core can be assembled or disassembled only by turning the fixture 27 for maintenance work or replacement work, for example.

7A and 7B schematically show a cross-sectional view of the air jet bursting apparatus 60. The small electric motor 70 is directly connected to the small planetary reducer 71 thereto, and transmits the rotational motion to the nozzle core 26 by the worm drivers 72 and 73. The nozzle core 26 partially comes off the overdriver sleeve 74 in the figure. The electrical connection is made by means of an electrical plug connection 75 which is liberated by galvanic plating, whereby it is supplied to the electric motor 70 with a required drive current, preferably at a low voltage (50 Volt or less) and a high frequency.

8 shows a schematic diagram of an overall electrical control device of a plurality of electrically driven nozzle cores. There is no limit to the number of simultaneous air-operated bursting apparatus 60, and hundreds of installations are possible. The current supply by one control device 76 is made by the bus line 77 and the branch line 78 of the individual air injection or bursting device 60.

9A-9C, there is shown a very preferred shape relating to the supply of compressed air to the nozzle core 21. As shown in FIG. Compressed air for air jet burst is supplied to the nozzle housing 1 via the space 80. There is a worm reducer 73 in the space 80. Compressed air then reaches an annular space 82 (FIG. 10A) along arrow 81, where it is moved through a plurality of air holes 85 (FIG. 9B) into a cylindrical air distribution chamber 83, It moves from the air distribution chamber 83 to the injection hole 51 along the arrow 86. As shown in FIG. The air hole 51 becomes part of the most sensitive area of the twisting channel 25 leading to the outlet opening 20 immediately for air jet twist processing. The rotational movement of the overdriver sleeve 74, together with the nozzle core 26 with a plurality of air holes 85, forms a constant, unobstructed air passage, which is not the case if there is only one air hole 85. Do not. The air holes 85 are arranged in two biased rows 88, 89 to optimize air delivery. This results in an annular uninterrupted compressed air flow. The overdriver sleeve 74 is rotatably supported in the nozzle housing and rotates with the nozzle core 26. In this way a change in the flow state occurs despite the rotational movement of the nozzle core 26 and the different instantaneous positions of the nozzle core. The nozzle core 26 can be assembled and disassembled by the operator for twisting. At the same time the nozzle core can be pulled out or reinserted from the overdriver sleeve 74. In the assembled state, the O-ring 90 is to maintain the airtight state of the air distribution chamber (83). The overdriver sleeve 74 is removable by loosening the screw. The space 80 is also kept airtight by the O-ring 91.

FIG. 10A is a partial cross-sectional perspective view, assembled in an overdriver sleeve 74 with a worm wheel 73 with a nozzle core 26 attached thereto. As already explained, the air flow is indicated by arrows 84 and 86. In the outlet opening 20, the actual twist processing is effected by forming a loop (FIG. 4). 10B shows a full-size overdriver sleeve 74 shown with a ruler. Other drawings are shown enlarged.

11 shows a very preferred shape disclosed in EP-A-1 022 366. It is proposed here that the rotation of the nozzle core changes continuously or intermittently. This substantially extends the wash interval. Fig. 11 shows, by way of example, simultaneous coupling and twisting of two yarns, ie, yarn A and yarn B, which are guided to the inlet 47 by a yarn guide 23. Figs. The nozzle core here consists of a ceramic nozzle core 92 and an outer nozzle core mantle 93, which is a rotationally supported overdriver supported by the drive housing 1 by a ball bearing 94. It is installed in the sleeve 74.

12 is an enlarged view of a two-split nozzle core. The ceramic nozzle core is supported on the nozzle core mantle 93 by a snap fixed lock 95 and airtight by two packings 96. Since the ceramic nozzle core and the nozzle core mantle are units fixed to each other, only one large through hole 97 for each injection hole 51 is sufficient.

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Claims (20)

A nozzle core having an air jet texturing nozzle, the nozzle core being driveable for relative rotational movement relative to the nozzle housing and having at least one air supply hole, the nozzle housing having a compressed air connection for air jet texturing, In the loop yarn manufacturing apparatus, The drive device for the rotational movement of the nozzle core is composed of an electric or pneumatic nozzle core drive device, it is formed integrally as a constituent unit in the nozzle housing loop loop manufacturing apparatus. The method of claim 1, The electric drive device is a loop yarn manufacturing apparatus characterized in that it comprises an electric motor connected to the flange by the nozzle housing. The method of claim 2, The electric motor includes a planetary reducer and a worm electric motor, characterized in that the loop yarn manufacturing apparatus. The method of claim 2, The loop yarn manufacturing apparatus, characterized in that the electrical connection is liberated by galvanic plating in the nozzle housing for controlling the electric motor. The method of claim 4, wherein The nozzle housing is provided with a plug-type compressed air connection for air blowing and twisting, and contact plug connections are arranged along parallel axes such that the electrical connection as well as the compressed air connection can be connected or disconnected by the plug movement. Loop yarn manufacturing device. The method according to claim 1 or 2, And the nozzle core is driven by an overdriver sleeve fixedly installed in one nozzle housing, and the nozzle core is easily assembled and disassembled from the overdriver sleeve. The method of claim 6, The nozzle core has at least one or three air supply holes arranged along the circumference, and the overdriver sleeve has air holes arranged uniformly along the plurality of circumferential directions. The method of claim 7, wherein An air hole in the overdriver sleeve is arranged in at least two rows, and the compressed air can be supplied from the compressed air connection by the annular space of the nozzle housing. The method according to claim 1 or 2, And the nozzle core is formed in two divided forms, one of which has an inner ceramic element and the other of which has an outer nozzle body, and is easily assembled and disassembled as a unit into an overdriver sleeve. The method according to claim 1 or 2, And a stationary swivel rock having one movable adjustable derivative, wherein the derivative is stationary in the operating position and the nozzle core is rotated relative to the derivative. The method according to claim 1 or 2, Loop core manufacturing apparatus, characterized in that the nozzle core rotates at 1rpm to 60rpm. The method of claim 10, And the inductor is adjustable for adjustment of the outlet clearance between the inductor and the nozzle outlet relative to the operating position. The method of claim 1, And in the case where there are a plurality of the nozzle cores in a parallel operation manner, the driving of each drive device of the nozzle cores is performed by a bus line from one central control device. The method of claim 1, The drive device is a loop yarn production apparatus characterized in that it comprises a ratchet driver which can be driven electrically or by compressed air by a coil. The method of claim 1, The nozzle housing consists of an air jet texturing housing and is divided into two, in which one housing portion comprises a compressed air connection and the other housing portion comprises at least one further component and forms one component unit as a whole. Loop yarn production apparatus, characterized in that. The method of claim 15, Another component is a loop weaving device characterized in that the arm (arm) having a derivative. The method according to claim 15 or 16, Another component is a loop yarn manufacturing apparatus, characterized in that the nozzle core drive device. The method according to claim 15 or 16, And the other housing portion is provided with an electrical contact plug connection such that both plug connections are simultaneously connected and released. The method according to claim 1 or 2, Loop core manufacturing apparatus, characterized in that the nozzle core rotates at 2rpm to 20rpm. The method according to claim 1 or 2, Loop core manufacturing apparatus, characterized in that the nozzle core rotates at 4rpm to 6rpm.

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