DE2220977A1 - Device for handling yarn - Google Patents

Description

Dr.-ing. Dipi.-Phys. GSKAR KÖNIG patent attorney

Deutsche Bank AG Stuttgart Telephone: (0711) 628561 account number 89/00300 Telegram: Koenigpat 7000 STUTTGART-I, Klüpfelstraße 6 Postscheck St. 84919

P.O. Box 51

3OSO

Zinser textile machinery company .with "limited liability, Ebersbach

Device for handling yarn

209847/1075

The present invention relates to a device for handling yarn, which is suitable for a running Take up the thread and then pull it with high tension.

In the manufacture of synthetic filaments it is common to pass a number of filaments through a spinneret and then gather them into one or more threads. In modern systems, these steps take place continuously The process is carried out and the yarn webs can reach linear speeds of approx. 3000 - 4000 y / nin (approx. 2700 - 3750 m / min).

The filaments made by the above process occasionally break. Such thread breaks bring difficulties with itself, since the spinning process cannot be interrupted without causing a large amount of thread waste can. In order to reduce these difficulties, a transportable thread suction device has already been proposed to use which is suitable to take up the running thread and to keep it taut until it can be passed on to the rewinder. However, the known devices of this type are generally unsatisfactory as they get the high speeds that are common in modern systems for thread production, cannot achieve and also not the thread tension effect that is required of today's winding devices will. In addition, the known devices include a rather complicated pneumatic device for

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switching from vacuum to power setting and these positions cannot be set or adjusted without partial dismantling of the device will.

An object of the invention is therefore to provide an improved, transportable device for handling yarn, by means of which a running pad can be picked up and then kept under tension that meets the requirements of modern rewinding machines and also has other advantages.

The present invention also aims to provide a relatively to provide inexpensive apparatus of the above type for handling yarn which is relatively simple and easy operable control mechanism for switching from the Has vacuum for power adjustment.

Another object of this invention is to provide an apparatus of this type in which both vacuum and Power setting slightly adjusted for maximum effect can be without the device having to be partially dismantled to carry out these adjustments.

The device according to the invention is characterized by a Ventilation inlet tube with one end for air inlet and a closed inner end, an air outlet tube, which is fixedly arranged in the air inlet tube coaxial with it and has an open end that is the closed inner one The end of the air inlet tube is adjacent and receives from this air and also that detected by this device

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Filament, a nozzle tube having open ends for receiving and passing a running filament, extending through the closed inner end of the inlet tube and coaxially aligned with the outlet tube and forming an annular opening with the outlet opening and axially between first and second positions adjustable, the first of which is very close to the open end of the outlet tube, forming a relatively small annular opening for a high velocity air stream to pass through it, drawing air into and through the front end of the nozzle tube , so that the negative pressure absorption of the running thread is facilitated, and the second position is a little further from the open end of the outlet tube ^v , which produces a somewhat larger annular opening so that a stream of air flows through it at reduced speed and thus significantly less air into the Nozzle roar re is sucked in and sucked through it, whereby a high tension is exerted on it after the thread has been picked up while it passes through the outlet tube, means, preferably spring means, by means of which the nozzle roller can be transferred from the first to the second position and manually operated control means , by means of which the nozzle tube for receiving the thread is releasably held in the first position, so that after the nozzle tube is released, it is automatically transferred to the second position in order to pull the thread at high speed and tension.

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This device thus has an air inlet tube with a inner end as well as an outlet tube that extends coaxially into the inlet tube and further has a nozzle tube extending through the closed end of the inlet tube hinduroh extends and is arranged coaxially with the outlet tube. The nozzle tube is in the inner end of the Inlet tube slidably arranged for adjustment between a first or yakuum position in which it is is located in close proximity to the outlet pipes and one Second or power position, in which the distance between the outlet pipe and the nozzle pipe is slightly larger. Means are provided by which the nozzle tube moves away from the outlet tube and into its second position is brought. With a control mechanism can the nozzle can be releasably held in its first position so that after the mechanism has been triggered the The nozzle tube is automatically brought into its second position.

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Some of the objects and advantages of the invention are "already others are referred to below in context with a preferred embodiment shown in the drawing !! be ispieI of an inventive device explained .

In the drawing show:

Pig. 1 is a schematic representation that

shows how with one according to the invention trained device for handling yarn removed a thread from a machine used for the production of yarn γ / ird,

Pig. 2 is a perspective view of the invention Device for handling yarn in isometric representation,

a partial longitudinal section of the front part of the device, essentially along the Line 3-3 of the Pig. 2, v; if the device is in its vacuum position,

Pig. 4 shows a representation similar to Pig. 3, however, the device in its performance position shows

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Pig. 5 shows a partial longitudinal section of the rear Rope of the device, essentially along the line 5-5 of the Pig. 2,

Pig. 6 shows a partial end section along the line 6-β from Pig. 4,

Pig. 7 shows a rope end section along the line 7-7 by Pig. 5,

Pig. 8 shows a partial longitudinal section on a reduced scale of the air outlet tube of the in FIG Pig. 3-5 device shown,

Pig. 9 shows a partial longitudinal section of a variant of FIG Air outlet tube.

In the drawings is that designed according to the invention Apparatus for handling yarn is generally designated 10. , In Pig. 1 shows how the device 10 is connected to a conventional one via an air supply hose 12 Compressed air source 14 is connected and via the suction hose 13 to the conventional waste collection device 16. The device can, as shown, for example in connection with a device for the production of synthetic threads are used that have a Has spinneret 20 as well as the stretching device 22 and the winding machine 24. Ia Palle of a pade break this can be done during the above manufacturing process

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Device 10 manually in the position shown in dashed lines to take up the running thread. After picking up the thread, it is described as follows stretched and forwarded by hand to the yarn carrier 25 on the winding machine. The thread can now with a suitable knife or the like, so that the waste yarn is fed to the collecting device 16 will. *

Reference is made to Pig. 2-8 are referred to. ¥ ie shown, the device has an air inlet tube 50 with an end entry port 32 at one end that is over a Knierohrstücl ;: at an angle of 90 ° with the Air supply hose 12 communicates. The front one or inner end of tube 30 is through an air reflector 36 completed "which has a concave, toroidal front 38 which is designed so that the Air flow, as indicated by the arrows, is effectively reversed. The reflector 36 is by means of Cuff 39 and the pin 40 fixedly attached to the tube 30 and also has a cylindrical rearward Section 41. A cylindrical inner bore 42 extends through the reflector 36 and runs coaxial with the tube 30 and the cylindrical part

An air outlet pipe 46 is means in the coaxial direction a front bearing piece 48 and an end sleeve

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50 fixedly mounted in the inlet tube 30. The bearing piece 43 has annular channels on its circumference for the passage of air, as best shown in FIG. 6 can be seen and will be described in more detail later. The "outlet tube 46 has a front open end 52 that is located next to the closed inner end of the inlet tube 30, and its mouth edge is a curved one Has edge surface 54; see Pig. 3 and 4.

A nozzle tube 60 is slidably disposed in bore 42 of air reflector 36 and extends therethrough the inner end of the inlet tube and runs coasrially with the outlet tube 46. The inner or rearward end of the tube 60 has a frustoconical section 62 which extends partially into the open end 52 of the outlet tube 46 extends and here together with the arched Surface 54 forms an annular opening. Like in Pig. 4, the cone! Communicates with a frustum Section 62 with the bore of the tube 60 so that a relatively sharp, annular inner end is given is. The tube 60 also has an annular groove 64 for mounting a sealing ring 65, with an intermediate piece 66 External thread and a front portion 68, in which Suction mouth a ring 70 made of ceramic or another material with low friction is used.

A cylindrical housing 72 is carried by the nozzle tube 60, as best shown in FIG. 3 and 4

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you can see. It is substantially tubular in shape and has an internally threaded portion 74 that extends into the thread. 66 engages the tube 60 and also has a cylindrical sleeve area 75 which is free of play the cylindrical area 41 of the air reflector 36 records. In the wall of the sleeve 75 there is a slot 76 for receiving a radial pin 78, which is screwed into the air reflector 36 and fixed to it. With this arrangement that Housing 72 and thus the tube 60 along the cylindrical Area 41 of the air reflector 36 are displaced within the determined by the slot 76 Limits. The housing 72 can also be adjusted axially relative to the tube 60 completely independently Relative rotation of these two parts. To avoid unwanted rotation, there is one on the threaded portion 60 3? E constant !! nut 80 attached.

The housing 72 further includes one in diameter enlarged cylindrical end portion 81 forming a first radial shoulder 82 for those described below Purposes. The end piece 81 is * with provided with an external thread onto which a threaded ring 84 is screwed. It also has a number of lateral channels or ITuten 86, m the locking screw 88 of the ring 84 can engage · It is thus evident that the ring 84 is laterally along the length of the end piece 81 can be adjusted by loosening the adjusting screw 88 and inserting the ring into the

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desired direction is rotated. Ha ch establishing the right one Position the ring 84 is rotated until the adjusting screw 88 is over the closest channel reaches, then the adjusting screw 88 is screwed into the channel 86 and thus the corresponding position of this two parts held. An end face of the ring 84 further defines a second radial shoulder 90 for the purposes mentioned below. On the cylindrical part 41 of the air reflector 36 there is also a helical wire spring 91 arranged, which rests against the rear end of the housing 72 and this forward or after left pushes like this from the pig. 3 and 4 can be seen.

The device 10 also includes manually operable control means, with the aid of which the nozzle tube 60 is held unlockably in its first or vacuum position, such as in Pig. 3, so that after unlocking the nozzle tube by the compressive force of the spring 91 automatically is brought into their second or power position (Fig. 4). In particular, the control means iron the first Shoulder 82 on housing 72, the second shoulder 90 created by the locking ring 34 and the rotatable pawl 94, which is hinged to the head end of the inlet tube 30. As described in more detail below, the pawl 94 a front, downward arm 95 which optionally extends over the first shoulder 82 around the nozzle tube in its first position or grasping over the second shoulder 90 to keep the nozzle tube in its second Position to hold on.

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As can be seen from the above description and drawings, the first shoulder 82 is located radially below

, .. _, lind is offset axially to it., .... , _. the second shoulder 90 /. In addition, the pawl 94 can be pivoted about a transverse pin 96 so that the arm 95 can be moved in the vertical direction, that is, between a lower position, where it engages over the first shoulder 82 (see FIG. 3) and an upper position Position where it engages over the second shoulder 90 (Fig. 4). A coil spring 97 is carried on the inlet tube 30 and is arranged to urge the pawl 94 down to its lower position. In order to pivot the pawl 94 upward, there are manually operated cables (cable pull) by means of which the pawl can be pivoted upward against the spring force of the spring 97. This cable pulley includes a cable 98 extending axially within the tubular housing 100 along a substantial portion of the inlet tube 30, the cable 98 being operatively connected by a slide 102 and the actuator 104. A slot 105 in the rear end of the housing 100 is used for the sliding receipt of the actuator. As will be apparent, the operator can grasp and manipulate the actuator 104 with his finger and pull it rearwardly along the slot 105 into the guide housing 100, thus lifting the latch arm. This thus detaches itself from the first shoulder 82 and the housing 72 moves forward until the arm 95 rests against the second shoulder 90.

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j? y. 8 shows an overall longitudinal section of the outlet tube 46. In particular, the tube 46 has an outer reinforcement tube 110, for example made of metallic material, such as seamless alurainium tubing. The tube 46 also has an inner tube 112, which has a slightly conical inner bore 113, the diameter of which is at angle A. increases in the direction away from open end 52. The angle A is preferably sufficiently small to be about the entire length of the tube has a high air velocity to be able to maintain and will expediently generally be between about 1 ° and 2 °. The angle of the conical Bore 113 thus has twice the value of angle A, i.e. approximately between 2 ° and 4 °. The inside consist of a suitable plastic.

approximately between 2 ° and 4 °. The inner socket can e.g.

Pig. 9 shows an outlet tube 46 'which is an alternative to tube 46. The tube '46' has a similar tubular sleeve 110 ', but the inner plastic tube 112' has an internal bore 113 'with a number of gradations of different diameters. With this construction, there are zones with air turbulence at every diameter graduation, which help prevent the thread from dragging along the wall of the bore and which also help to keep a multifilament bundle of thread in the open state so that the air acts against the thread surface and can generate a higher thread tension. The Gesaratöffnung3winkel along the B _o in the guide tube 46 · generally has the same value as the lie in the tube 46 and may be generally about 2-4 °.

209847/1075

As described above, the device 10 requested a first position or setting (see FIG. 3) in which the annular Opening between the nozzle tube 60 and the outlet tube 46 is relatively small, thereby creating a flow of air at high speed so that air enters the front Aspirated end of the nozzle tube 60 and through the nozzle tube is sucked through, whereby the pick-up of a running thread is facilitated. At the second position (Pig. 4) the ring-shaped opening is somewhat larger, whereby, the speed of the airways flowing through them is reduced so that little or at least significantly less Air is sucked through the nozzle tube 60 so that a strong pull can be exerted on the thread afterwards this has been recorded.

According to the present invention, both positions can be accurate and easily "trimmed" or adjusted for maximum effectiveness. During this setting process, the device 10 first connected to the air supply (air compressor) 14, the s.B. can generate a pressure of approximately 100 psi (about 7 bar). The housing 72 of the nozzle tube 60 is manually pushed into the device until the pawl arm 95 falls over the first shoulder 82 (FIG. 3). The locking nut SO is released so that the nozzle tube 60 can rotate freely in the housing 72. Using a negative pressure aerator mounted on the eye 70 of the nozzle tube For example, the position of the nozzle tube relative to the outlet tube 46 is adjusted while the tube 60 is inserted into the housing

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is screwed further in or out of the housing until a maximum value of the negative pressure of, for example, about 23 ^{liters of} mercury (533 mm Bg) is reached. The lock nut 80 is then tightened against the housing 72 so that this setting is maintained. The trigger 104 is then actuated and the pawl 94 released so that the shoulder 90 of the ring 84 comes to rest against the arm 95 (FIG. 4). Then the set screw 88 is loosened so that the ring 84 can be rotated and the pressure gauge is reattached to the eye 70. The ring 84 is then rotated until a which had been found for low pressure rise for example, "to a negative pressure of about 8 ¹ 'of mercury (203 mm Bg) or optionally also an excess pressure is reached. The ring 84 is rotated until the adjusting screw 88 is located over the closest channel 86, then it is fastened again so that it remains in this position. The device is now ready for optimal operation.

Preferred exemplary embodiments are shown in the drawings and the description. Although special names are used, these are only applied for the purpose of description and are not in any way limiting Character.

The device explained above can be briefly described as follows. It can be operated manually and is suitable to initially take up a running yarn and this at high speed and high tension. The device has a nozzle

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tube, the front end of which has an opening into which the yarn can be sucked. The device also has an output tube that is leoaxial to the rear end of the Diisenröhre is arranged so that an annular opening is formed between them. An air supply3 device feeds compressed air into this opening to create suction air in the nozzle tube. There are funds available with the help of which the distance between the nozzle tube. and the output tube can be changed manually, a first position for suction and a second position for tensioning the yarn is.

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Claims (10)

3030 - t6 "Claims Device for handling yarn and for use in the Production or further processing of threads that can initially take up a running thread and then this pulls at high speed under high tension, characterized by an air inlet tube (30) having one end for air entry and a closed one inner end, an air outlet tube (46; 46 ·) s which are fixed is arranged in the air inlet tube coaxially to it and has an open end that corresponds to the closed inner The end of the air inlet tube is adjacent and receives from this air and also that detected by this device Thread, a nozzle tube (60) with open ends for receiving and for allowing a running thread to pass through the closed inner end of the inlet tube extends and is coaxially aligned with the outlet tube and, together with the outlet tube, an annular one Forms opening and is axially adjustable between a first and second position, the first of which o is very close to the open end of the outlet tube, forming a relatively small annular opening so that a stream of air flows through them at high speed, causing air to enter the front end of the nozzle tube is sucked in and sucked through it so that the vacuum intake of the running thread is relieved, and the second 209847/1075 3030 - Ή? - Position slightly-wide is from the open end of the Auslassrühre to which zeitigt a somewhat larger annular opening so that ^ei ^ air flow at a reduced speed to pass therethrough and drawn thus substantially v / ess air into the nozzle tube and is drawn through it, whereby, after When the thread is picked up, a high degree of tension is exerted on it while it passes through the outlet tube, means, preferably spring means (91), by means of which the nozzle tube can be transferred from the first to the second position and manually operated control means by means of which the nozzle tube can be picked up of the thread is releasably held in the first position, so that after the nozzle tube is released, it is automatically transferred to the second position in order to pull the thread at high speed and tension. 2. Apparatus according to claim 1, characterized in that the The nozzle tube is slidably arranged and the means for this is an outer housing carried by the nozzle tube (60) (72) have that the control means have a first shoulder (32) arranged on the outer housing and a width Shoulder (90), which is also located on the outer housing and at an axial distance from the first shoulder is provided, as well as a pivotable pawl (94) which is arranged on the inlet tube (30) and is suitable for this is to either reach over the first shoulder and hold the nozzle tube in the first position, or over the to grab a second shoulder to hold the nozzle tube in the second position. 209 8 47/107 - 18 - 3080 3. Apparatus according to claim 1 or 2, characterized in that the spring means have a helical spring (91), between the outer housing (72) and the closed inner end (36) of the inlet tube (30) is attached and pretensioned. 4. Apparatus according to claim 2 or 3, characterized in that that there are means for the selective and independent adjustment of the axial position of the first shoulder and second shoulder relative to the nozzle tube (60) so that the first and second positions are independent can be adjusted from each other to the size of the annular opening that they are in the both positions of the nozzle tube has f ^ adjust. 5. Apparatus according to claim 4, characterized in that the second shoulder (90) is provided on a ring which is arranged on the outer housing (72), the means for optional and independent Adjusting the shoulders a threaded connection between the outer housing and the nozzle tube and have a threaded connection between the ring and the outer housing. 6. Apparatus according to claim 5, characterized in that the second shoulder is radially above the first shoulder is provided, wherein the pawl (94) can be pivoted in the vertical direction, between a lower position in which it engages the first shoulder; an upper position in which it engages the second shoulder. 209847/1075 ^{= 19} ' 3030 - t9 7. Apparatus according to claim 6, characterized in that the control means comprises a spring (97) which is so arranged is that it presses the pawl (94) into its lower position, as well as a manually operated cable pull (98, 104), by means of which the pawl can be pivoted into its upper position against the force of the spring (97). G, device according to one of the preceding claims, characterized characterized in that the outlet tube (46) has a slightly conical inner bore, the diameter of which in direction away from the open end in a Y / angle increases by about 2 ° - 4 °, so that a high air speed given is. 9. Device according to one of claims 1-7 »characterized in that that the outlet tube (46 ') has an inner bore, the sections with different diameters has, so that a sone with air turbulence is created by each diameter gradation. 10. Device according to one of the preceding claims, characterized in that the air outlet tube adjacent End (62) of the nozzle tube (60) is frustoconical and at least partially in the open end of the air outlet tube (46) protrudes to form the annular opening. 2098A7 / 1075