CS221260B2 - Facility for introducing at least one yearn in the injection nozzle of pneumatic shaping device - Google Patents

Abstract

A yarn is fed into the feed duct of a pneumatic texturing device by threading the yarn across the entry of the feed duct transversely to the axis of the feed duct. The yarn is cut with a cutter downstream of the entry and operation of the cutter in synchronized with the prodn. of a pressure fluid jet from a nozzle. The fluid jet forms a loop of yarn which moves into the entry from which it passes into the feed duct. Threading can be automatically effected at high speeds, e.g. with the yarn moving across the entry at speeds greater than 2000 metres/min.

Description

(54) A device for introducing at least one yarn into an injection nozzle of a pneumatic forming apparatus

The invention relates to a device for introducing at least 'once ^at the injection of' ^{t y} LINES pneumatic molding device of the yarn.

SUMMARY OF THE INVENTION The object of the present invention is to provide a device for automatically introducing yarn into a pneumatic forming apparatus without generating a considerable amount of waste.

The ^hive OHA is felled vynátezu řdšena tm that the device is formed by a system adjustably mounted before forming apparatus (B) and comprising a fluid device (2) for supplying pressurized fluid and an injection head (3) that is placed before the input ^M of the aperture (4) ^P ro introduction pnze into the pneumatic forming device (B) between the injection head (3) and the inlet opening (4) is arranged a guide device (11) yarns, and "ga ^p RNM opening ⁽⁴ L relative to the sense of movement of yarn is positioned cutting device (5) and pnze ^y nc ^h ronizačm ^{when the} machine (7) with the function ^y nchromzaci tetodnov ^ o ^{ú í} machine (2L injection head (3) and it plteiOzávacl · means (5) yarns.

Come VYN system guides the ^cut-MU e be used for binding nze ^{p * id} on September jinýc ^h ^ ^DRIVING neumadck than ^{P or} not ^P Pneumatic forming Ustrojte

CQ

The invention relates to a device for introducing at least once ^at the ^d of ^t vstnkovárn feature ^to y ^p neumatic ^Ké it tvarovamho pnze this device.

It is known that in operation, the shape of the yarn forming apparatuses involves delicate operations, one of which is to ensure that the yarn is introduced into the apparatus used when the machine is started. Typically used materials, which consists of drawing-in needles of metal wire which is fed the output end of the device, inserted through with the device and the yarn is connected to the feed ^to Oncle Aside ^from it ^ these pomíiclíy are outdated, cause usually, particularly when the shaping is carried out smoothly with the production of yarn and high velocity that appreciable quantities materiáto the ROM, ^{e p} a n ^{e dp aD;} moreover, above a certain speed of the order of 200 m / min, it is impossible to guide in the guide needle.

Instruments are known for the automatic ZAVA ERN ^d p from ^{d of manufacture} of us ^and by ^¹H vac ^at the machine. According to U.S. Pat. No. 3,564,968, the yarn advancing along a predetermined path, not automatically close the ^Adi to toarovactoo fotroj ^ but into the nozzle for sucking the waste placed in the vicinity of the yarn. Apply a moving injection device which operates mechanically and pneumatic ^alkyl and ^p is centrifuged nřazeno ^h ovations ^also iistrojí him. Wtéikovací furnished optionally ^e ^ m ^ ecto shifted first m-ECHANICAL yarn ^y in the direction of the suction nozzle so as to form the loop and then, after a yarn cut, the yarn is fed into the suction nozzle pressure tekuttnou ^{characterized} st ^s forged injector.

Avşa ^to Zn ^and yet free ^of the ^R m ^s s ed ^for the automatic introduction of the yarn into the pneumatic molding device.

Summary of the invention that allows ZAV ^and the DEM least one yarn in tires ^and t ^Ick ého taarovactoo furnished with ^{p a n} lies in the fact ^that it is constituted by nav ^ADE c ^s assembly adjustably mounted before forming apparatus and comprising a fluid supply device pressurized fluid and the injection head, ^kt ERA umfcténa ^BC ed vstoprnm hole ^P ro introducing the yarn into a pneumatic molding device, wherein the injection head and the inlet opening is arranged a guide device of the yarn, and inlet relative to the sense of motion of the yarn is disposed cutting yarn device and means for synchronizing · synchronizam functions ^to te utinov it ^é ^ organ injection head and device přeřezávacího yarn.

^p o ^d le The advantage ^{Copper h} o provedern zahzeto the invention comprises an inlet opening of the forming tube a funnel shaped aperture in · after ^d about ^{BE pl} oc ^hé taubk ^ it ^Iz instant width ^to and in ^ETSI than ^P r ^of measures ^{eg IKE} nothing; the upper profile and the lower profile of the inlet of this slot are curved and the radius of curvature of the upper profile is greater than the radius of curvature of the lower profile.

In another embodiment, the yarn cutting device is provided with a movable cutting blade connected to the movable core ele ^{к tromagnetu, PRICE} EMZ ^p oh ^y BHV ^E-core. and thus the ^Hyb Sporadic ^{P of} cutter EN ^{s p} e ^l uteženy rovnohěžně rotíčepeM and with ^p mod ^{p and} gently ^s denial of the blade is provided by a leaf spring disposed in the path of the cutting blade.

"Fluid device" is mnn j and ^k y ^k olive means ^to esters ^at the ^Adi _působern ^to pressurized fluid. 'Telkutrne' ^means ptyn liquid, etc .; preferably water is used.

The fluid acts on the yarn so as to form a mixture of ^ ^ which vhátí ^d of hole phvo tvarovamho ^{d p of} the grate of ^copper; button ^for the IP ^and it has ^to Utin ^to the AC flak r ^s c ^{t hl} axis of said fluid is greater than the speed of the yarn.

As přeřezávacího device employing an apparatus comprising the knife and the counter blade, which umtetény 'in ^the plane of ^l m ^s or substantially perpendicular to the yarn path, with one of these. ^Article enes is ^fixed, while the other is connected to '_ s poliylbHvým eletoromagnetu core and drawn into the rest position · · spring. Devices of this type are described, for example, in Swiss Pat. No. 490,942 and in French Pat. . Pat. No. 1 474 625. Preferably used zařízern prárázávajto ^ ffi ^ ^h em and obsahujto ^of the cutter blade disposed in a plane perpendicular or substantially perpendicular to the advancing direction of the yarn and connected to the movable core · an electromagnet having a long stroke. and is associated with a screwdriver váteovou ^b verifies the return spring but ^ ^ wherein the blade is positioned against the fixed for ^Tic Epeli ^which Proc ^h-i of the ^yarn, and the pH ^of ezacím storyline provides a spring support on the blade · protičepeli.

Navedern ^CMD from the ^already e m ^p rov ^and D ^ETB ud at rest or with a high speed wherein the yarn beyond the inlet of the forming zařízern olbvyHe NAS ^and VA Nejaa ^to YM known means.

The invention will be explained. of embodiments in conjunction with the drawings wherein · FIG. 1 is a system for guiding a yarn into 'Nava ^{DE-C s p} olo ^{hy p} efore téarovam zanzen ^ FIGS. 2 to 4 different periods on yarn which has been cut into the forming device, FIG. 5 · electrical diagram of control sending jets of fluid to the yarn and control přeřezávacího tetrop hzem ^Y nchromzmu técteo operations, FIG. 6 cutting device, FIG. 7 in a view from below the assembly formed by the blade and .řezací protičepelí and Fig. 8 the cutting blade in side view.

FIG. 1 shows a guidance system and a yarn drawing-in position in front of the shaping device B. The shaping unit B is molded with ^{the type} ctovárám ^ where u ^ITO sucked into the nozzle which is closed vtékna ^Adi. and tubes to hang ^Ade heated rn ^{t h} e ny ^к with ^{those as} described in French naphklad 'Pat. No. 2,052,161 and in British Pat. Nos. 1,289,491 and 2,110,561. Booting ^the nze may be a ^{P th P} o.ji hze of umného no ^b of synthetic material.

Fluid apparatus 2 for the pressurized fluid is connected with the injection head 3, which is located before the inlet opening 4 for zavííděm nze ^p to ^p neumatic ^to e of ^{the H} of the shaping device B. Between the injection head and the inlet opening 4 is arranged a guide device 11 of the yarn. Downstream of the inlet opening 4 there is a cutting device 5, a catching nozzle 6 and a synchronizing device 7 for synchronizing the operation of the fluid device 2 and the cutting device 5.

As is to be yarn 1 introduced into the forming device B placed in the yarn 1, coming from a not illustrated feeding device on the NAV ^ADE c ^s system and ^p dip in ^d ic ^¹H on device 11, such as cam rollers, prior to the injection head 3 and the inlet opening 4, whereupon the yarn is sucked one entrapment die 6. Simultaneously with the synchronizing device 7 starts the cutting device S which cuts the yarn 1, and causes the yarn deviation and the ^t 1 to zavedern vstupmbm opening ⁴ and ^p loc ^hé tube 8 that with a beam of fluid under pressure from the injection heads 3 (Fig. 2 and 3], at ^p e ^z is ^P Mn of ¹ sucks on outputs ^P in the flat tube 8 into the forming device B, the forming fluid (Fig. 4). After introduction pnze ¹ c ^s NAV ^ADE and dedicated system from the front side of the shaping unit b and the shaping ^{as DE} j protahá ^{characterized} by ^b klým způsotem.

Typically, the opening 4 consists of a shaped slot in the form of a flat tube of the funnel 8 of the opening 4 to facilitate ^created therefore ^and running direction R ^u ^ k ^ j and ^k shown in a R ^{b. 3rd} SIR vstupmho and ^the opening ⁴ is constant, and its size is preferably somewhat greater than the diameter of the yarn. As indicated in FIG. 1, the upper profile 35 and the lower profile 34 of the inlet opening 4 have a curvature, the radius of curvature of the upper profile 35 being unusually larger in order to avoid friction of the loop on the walls of the slot as much as possible. into the inlet and flat tube 8.

^p omůcka ^P ro supplying fluid ^P from the ^gamma shocks of pressure is preferably a device for 'placed under pressure, which is located outside of the entire system p ^{Acquisition of consumption} em ^f indicate below UAK the meters ^already e ^p rovád ^{ive out of five which} just jakýmkohv Zn ^and my apparatus, such as a pump or pressure accumulator. «

The injection head 3 is usually formed by a tube with a round or rectangular stump. ^{Are PU} one ^{as well as the} APRs ^p u e ^{p d} rove in any known manner, for example, fast-acting valve. The simultaneous cutting and ejection of the beam is ensured by the synchronization device 7.

Example of operation of the synchronization device 7 is shown in FIG. 5. The synchronization device 7 is powered by a source 12 of DC or rectified current voltage of 24 V and the intensity of 10 A. The synchronizing device 7 includes a bi-directional button 13 ^on tere is ^to account hdov ^s maiden ^p Ojen for ovtadata of ^b in ^d and connected to vyWjetí otoo d. Furthermore, the device 7 comprises a control circuit 14, a discharge circuit 15 and an electromagnetic relay 16, which is normally open.

^P RI ^P for ^TEM Pomor ZAT-em at Damtko 13 is achieved by disconnecting the discharge circuit 15 and · connecting the control circuit 14 which produces the connection of the electromagnetic relay 16 at time t which is a function of values of capacitance 17 and consequently at this time It energizes the electromagnetic slide 18 which controls the fluid injection and the electromagnet 19 which controls the yarn cutting device 5.

Thus, the connection time of the electromagnetic relay 16 is independent of the time for which the button 13 is actuated.

The fluid jet does not act substantially on the axis of the yarn inlet opening 4; preferably it acts in an axis parallel to the axis of the flat tube 8 and located upstream of this channel, as shown in Fig. 1; jet of fluid exits from the hole, which may be circular or rectangular cross section, preferably ^p Ravo ^diagonals e ^l n ^Cart AC ^at what ^{on the width} and ^p aprsku is preferably less than the width of the inlet opening 4 to the coherence of the beam maintained as long as possible.

Cutting the yarn 1 advances the device with čepeh and ^p roti ^p e ^p e ^lee, which are mm ^e n? ^B o ^p protruding ^to a ^l m ^{s KD} caliber ^p yarn, ^BC and ^no EMZ is ^d en of these members is fixed and the other is connected to the movable core of the electromagnet, which is pulled to the rest position by a spring. The advantage with the use of the ^d ou ^f T ^s such ije pu zařberá for him ^{from p} nze ^p roc ^{HA s} in ^{y Br} RNM in evne ^{p p} rotičepeli; during re-cutting blade moves straight ^{without some} vtoi roti ^{p p p} e ^d ržuje Eli and in abutment on this protičepel leaf spring.

The embodiment přeřezávacího device 5 is shown in a R ^{b. 6} and ^{7. The} cut-off device 5 comprises a cutting blade 21, a counter blade 22, a leaf spring 23, an electromagnet 19 whose movable core 24 is connected to the rod 25, a coupling 26 connecting the cutting blade 21 to the rod 25, a helical cylindrical spring 27 surrounding the electromagnet 19. a rubber washer 28, a retaining washer 29, and a bolt 30, a frame 31 for the electromagnet assembly and the cutting blade, a frame 32 for receiving the counter blade 22 ', and an electrical lead 33 for the electromagnet.

Giant. 7 shows a system of a cutting blade 21 and a counter blade 22 as seen from below, with the cutting blade 21 in a rearward position relative to the counter blade 22 and the yarn 1, passing through a recess 37 made in the counter blade 22.

Giant. 8 shows in side view and in section a cutting blade 21 having a recess 38 on its side facing the protičepeli 22nd, This arrangement amortized ^except stroke ^EN pellet 21 faces the gap 39 in protičepeli 22 and due to the presence of the heel 40 in order at ^p ředsuvn ^{é é} sebum ^Walking tn m ^p o u ^{r Hyb} cutter ^and blades 21 of friction occurred protičepel 22, thereby samobroušení blade 21. t ° ^m s ^p s ^{eye takes} precedence of řezatah-lation of zán221260 that it is able to cut a yarn having high speeds of magnitude r ^and 2000 and 3000 m ^/ / min or more in very short times that are shorter than a thousandth of a second.

In operation, the guidance system with the inlet 33 feeds current to the solenoid 19 for a predetermined time t, which causes displacement of the core 24 and the rod 25 which carries a spring 27 and the rubber pad 28 and cutting blade 21 under protičepel 22 causes forced ^é piisobem and ^No employment ^ eta e ^{p 21} to ^p 22 protičepele ater side, the blade due to its thread profile is pressed into the interior of the recess protičepele and simultaneously cuts. The return of the cutting blade 21 to its original position is caused by the combined effect of the spring 27 that expands and the rubber washer 28, which, like during the cutting period, acts as a damper.

The guidance system may be, but need not be,. mounted independently of the forming device B; in case it is mounted on the forming device B, the locking or rotation axis 9 and the holding device 10 can be modified.

Well, the guidance system has been correctly positioned ⁱⁿ front of the forming device, a centering member can be used. The distances between the upper roller and the yarn insertion hole as well as between the yarn insertion hole and the cutting device should be as small as possible. The yarn may be placed on the guidance assembly, whether the assembly is in the open or closed position in front of the forming device; usually the yarn position is secured by a suction nozzle.

It is clear that guidance system according vynátazu m ^b e YT ^already uses ^P ro 'ZAVA ^{d in} an ^average yarn crossing to other devices than pneumatic or nepneumatická forming device.

Several examples of embodiments of the invention will now be given:

He did

The forming device described in French Pat. No. 2,052,161 associates the guidance system of the invention in ^the ter ^{s p} nze vedern is formed ^{of the} eno ice ^to am ^i; the guiding fluid means is water maintained at a pressure of 3 MPa and acting on the yarn that protrudes from a rectangular tube opening of 0.25 mm x x 1.2 mm; the amount of water acting on the yarn is ³ cm ³ .

The forming device according to the method vynátazu CLOSE ^{Adi p} nze of titre 23ЭД ^d tex / 136 components, polyhexamethylene adipamide, and rychtastí 2 ⁴ 00 m / min up ^to 8 ^h Anat O ^{of the} circular cross section of something having a diameter of 1.8 mm, wherein the pressurizing fluid (steam) supply pressure is 1.2 MPa. · To introduce the yarn into tvarovamho ^On machines with ^{PU running} in the OF ^and VACI ^interrupting device which cuts the yarn, wherein the elapsed time between cutting the first component, e.g., fibrils, and the fibrils last 0.5 milliseconds.

Example 1 a d 2

Trip system according to the invention and the method according to the invention, the yarn titer of polyhexamethylendipamidu of 1750 dtex / 102 fibп ^{1, and also} introduces a rate of ³⁰⁰⁰ m / min to campaign for donations device as described in ^P atentmm with ^PI no. 2 ^{052 1M;} SM ^yčk and in ^y TVOne ^p o ^{Pla of manufacture} breaking ^p nze ^Pooh sobernm hornet beam which strikes the yarn under a pressure ^{of 4 MP} AAV ^y c ^HA from ^the openings OBD ^Star NAL ^to b ^s pipes ^alkyl is ^Z has the ^P Ru ^of cutting dimension ^{y 0,25} mm · xx. 1 mm; the amount of water acting on the yarn is ³ µm ³ ; direction and the ^{p yčk} Otom campaign for donations sucked into the device at the outlet 8 by steam přdáděnou under pressure of 1.2 MPa.

Claims (3)

OBJECT OF THE INVENTION Apparatus for introducing at least one yarn into an injection nozzle of a pneumatic forming apparatus, characterized in that it comprises a guidance system (A) displaceably positioned before the inlet of the forming apparatus (B) and comprising a fluid device (2) for supplying a pressurized fluid and an injection htavmi ⁽³ J ^kt ERA umístana ^BC ed ga ^p him opening (4) for introducing the yarn into the pneumatic · campaign for donations device (BJ, wherein the injection head (3) and the inlet opening (4R is arranged a guide device (11) yarns, and behind the inlet, hole (4) in the sense of the yam is positioned cutting ^{device; (5)} freckle and synchromzačm tetroj (7). synchronization function težkutinového device (2), the injection head (3) and přeřezávacího device (5) yarn. 2. Device according to claim 1, characterized in that the inlet of the holes (4) of the shaping device gels being funnel-shaped slit in poůobě p ^l oc ^{hé t} ru ^BKY (8 ^ jepž instant width is greater than the diameter .příze, wherein the upper section (35 ) and lower profile (34) of the inlet (4) ^{tet bi Teri} n ^y are out zak ^s · ^{p s} and oloměr knvosti upper profile (35) is greater than potaměr ^bush dolmho bility for ^f ile (34). ³ . ^Z and ^{R DRIVING p} ODTA ^b o ^d u 1 no ^b 2 ^{characterized} in ^brand itself by the fact that the cutting device (5) yarn is provided with a movable cutting blade (21) coupled to the movable core (24) of the electromagnet (19) wherein the movable core (24) ^and hence pOB ^y BL ^and V ^{and R} cutter ^{í No} Epeli ⁽² 1) are u ^L O ^from enyl straight ^{without some} · s proMepeh ⁽²²⁾ and the mutual ^e PO ^ jpřerá ^p e ^p ene ^{(21, 2} 2) is provided hstovou spring ^fo nou ⁽²³ b & umfet Nou caliber ^d of the cutting blade (21).