CN1295124C

CN1295124C - Thread supplying device

Info

Publication number: CN1295124C
Application number: CNB018182178A
Authority: CN
Inventors: 库尔特·阿尔内·贡纳尔·雅各布松
Original assignee: Iropa AG
Current assignee: Iropa AG
Priority date: 2000-10-31
Filing date: 2001-10-30
Publication date: 2007-01-17
Anticipated expiration: 2021-10-30
Also published as: WO2002036475A1; KR20030059219A; EP1330408B1; DE50109713D1; KR100526396B1; AU2002215984A1; DE10054103A1; CN1471490A; EP1330408A1

Abstract

The invention relates to a thread supplying device (F) comprising a housing (H); a storage body (D) which is rotationally positioned on a winding shaft (S); permanent magnets (P1, P2) which are oriented towards each other, are associated with the housing and the storage body, and are used to support the storage body (D) in a stationary manner; and an extension arm which is fixed to the housing. A ring support for a ring-shaped thread tensioner is arranged on said extension arm. Said ring support can be displaced from an operational position into a threading position. The permanent magnets (P2) associated with the housing (H) are integrated into the ring support (R) of the thread tensioner (B), the permanent magnets associated with the storage body (D) are placed in the region of the front end thereof, the opposing permanent magnets (P1, P2) are magnetically separated in the threading position of the ring support (R) and the storage body is released for free rotational movement.

Description

Yarn feeder

The present invention relates to a kind of yarn feeder that is applicable to knitting machine.

Has a housing by EP 0 370 066 disclosed a kind of yarn feeders, be provided with the storage member that can on spool, freely rotate thereon, and fixing to prevent corotation by permanent magnet in the housing and the permanent magnet that in storage member, is arranged in a straight line in the fixing mode of magnetic.Permanent magnet plays the magnetic effect by the gap between housing and storage member, and a winding unit rotates with spool in this gap.An annular weft threads drg cooperates with accumulator drum in the mode that touches contact.The extension arm pivot shaft of housing to extraction hole and nozzle structure.The weft threads drg is installed on the ring support, can axially adjust by the pneumatic thread system a new yarn is upwards entered the extraction hole from winding unit.In order to hold permanent magnet, storage member needs a specific shape, needs complicated structure dimension in housing.In the position of entrying, greatly limited the path that arrives storage member.

WO 92/195245 discloses a kind of yarn feeder, is arranged on the housing, has to drive the storage member that is used to rotate, and is combined with a brush drg at the leading portion of described storage member.Housing top installed an extension arm, is provided with a circular cone ducted body by an arm on this extension arm.In described arm, be provided with a pivot shaft joint and a coupler, between operating position and deviation post, to move conical ducted body.At operating position, cone is oriented to accumulator drum coaxial, has peripheral clearance and be pulled above the front end of storage member.At deviation post, the circular cone ducted body axially leaves the arrival storage member with moving of rotation from storage member by one.In order to rotate circular cone ducted body and storage member simultaneously, the circular cone ducted body is fixed in the swinging mounting of arm.In addition, be provided with magnetic interlock permanent magnet in the outside of bullet and the inboard of storage member, permanent magnet is dilatory along the tapered hollow body owing to the rotation of storage member.

On market, the model of the yarn feeder that is used for knitting machine of the Memminger-Iro GmbH of Germany SFE (shown in Fig. 4 of EP 0 658 507 A) by name, the storage member that it comprises the design of representative type and has the pivotable drive of electro-optical yarn scanner unit, described scanner unit are distributed to the storage member in the extension arm on being fixed to housing.The SFE yarn feeder is a kind of compact form, and the support of storage member combines with the CD-ROM drive motor part in housing.Described structural principle is only partly realized by the storage member that rotates.Although the performance of SFE yarn feeder is good, but when yarn speed or yarn speed change the very high structural principle that makes brake component with the storage member that drives rotationally and rotation because different former thereby be restricted, such as because too high yarn tension, operational issue appears in modern knitting machine in fact sometimes.In this structural principle, low and stable yarn tension for example is preferred under high yarn speed.But this needs basic change.

The objective of the invention is to illustrate a kind of yarn feeder, specifically, relate to the knitting machine that is used to have high yarn speed, it is characterized in that having a kind of compact structure, be easy to carry out the silk of wearing of new yarn, and can handle with high yarn speed on no any fault ground.The part of this purpose comprises design yarn feeder of the present invention, so that it is suitable for the design of the SFE yarn feeder of the known a large amount of members of use substantially, described member is compared constant substantially with the SFE yarn feeder, to be applicable to following application, for example owing to the consumption and/or the responsive yarn qualities of high yarn speed, acute variation, the storage member of Qu Donging no longer is up-to-date rotationally.

Above-mentioned purpose realizes that by following technical characterictic promptly a kind of yarn feeder F is applicable to knitting machine, comprises a housing H, and wherein storage member D is rotatably positioned on the spool S of the pivotable drive of a winding unit W; Distribute to housing and storage member and mutual orientation respectively, while magnetically cooperates and supports the permanent magnet P1 that storage member prevents its relative housing corotation with spool securely, P2, with be fixed to housing and be provided with the extension arm 2 of at least one the ring support R that has endless yarn drg B thereon, described endless yarn drg B with the concentric operating position of storage member and the front end mutual action of storage member, press on Yarn Brake, to produce with respect to the contact of storage member, described ring support R is at operating position and go into operation and be conditioned between the position, separated by the front end of storage member at the described position Yarn Brake B that goes into operation, it is characterized in that, the permanent magnet P2 that distributes to housing H is integrated among the ring support R that has Yarn Brake B, for supporting storage member D, support ring support R by spool S with respect to the extension arm on the rotation direction of housing H 2, by described permanent magnet P2 to prevent corotation with spool S, the permanent magnet P1 that distributes to storage member D is positioned over its front end region, the position that goes into operation at ring support R, the permanent magnet P1 that distributes to storage member D is separated by magnetic with the permanent magnet P2 that distributes to ring support R, carry out free rotational motion to discharge storage member around storage member axle X, described ring support R in the trunnion bearing 3 of housing H extension arm 2 along moving between operating position and the curve mobile alignment that goes into operation between the position, described trunnion bearing 3 is located at an end of extension arm 2, it comprises the pivot perpendicular to storage member D axis X, retainer detent 6,7 are configured to limit operating position, ring support R passes through between permanent magnet P1 at operating position, magnetic force between the P2 is supported on the retainer detent 6,7.

Yarn feeder is a kind of compact design, because in the pivot bearing zone of housing inner reel, does not have required being used to keep storage member preventing the structure dimension with the spool corotation, but the main structure space that utilizes the front end at storage member under arbitrary speed, can get.Ring support is used for the support yarns drg, as storage member, described Yarn Brake is supported in a fixed manner basically, therefore can handle very high yarn speed, in addition, ring support can be used for holding permanent magnet, and this permanent magnet cooperates with the permanent magnet of the front end area that is arranged at the storage member that can use under any speed, and can fix this storage member.With respect to housing or be fixed to extension arm on the housing, the mobility of ring support helps allowing the exchange of the weft threads drg at operating position place for example and/or provides uncrossed path (threading position) to pass a new yarn to storage member.The fixedly storage member that has fixing weft threads drg, particularly wieldy straw ring (straw ring) is allowed to handle at an easy rate twining responsive thread material up to the high yarn speed of about 1200m/min and/or the consumption of acute variation.

Based on structural principle of the present invention, utilize a plurality of assemblies of SFE yarn feeder, the yarn feeder that can provide a kind of outer appearnce to be similar to the SFE yarn feeder, it has and the essentially identical compact yardstick of SFE yarn feeder, because need a large amount of changes in the front end area of storage member.The compactedness of yarn feeder is particularly advantageous, because usually in knitting machine, these a large amount of yarn feeders are adjacent one another are to be arranged in the compact area, can prevent by the facilitating penetration of property in the threading position of ring support by wearing loss of time that a new yarn causes.

Suitably, ring support is fixed on the extension arm of the trunnion bearing of housing or housing, makes it to move forward and backward along arc mobile alignment.This allows comfortable one-handed performance.But, can leave out ring support and lateral rotation in an identical manner here, or axially be pulled away from.

Utilization is at the trunnion bearing of the free end of the extension arm of stationary housing and the preferred even tangent axle of axle perpendicular positioning of utilization and storage member, and utilize the brake component that attracts each other and position that in the operating position of ring support, uses permanent magnet, can realize the stable of ring support and the support of saving the space.

Suitably, ring support is provided with a fixing arm of extracting the hole out thereon, and it is simultaneously as a handling device regulating ring support.

Open and as for example allowing for example quick exchange of straw ring of weft threads drg with its annex that is in the loose weft threads drg that contacts, if necessary, the weft threads drg can be in the situation lower-pilot without any other anchor fitting to storage member.

In order in a very limited construction space, to guarantee the multifunctionality of ring support; ring support should be designed to the truncated cone ring; permanent magnet is with merry-go-round arrangement in its small-diameter end portions, and the free leading section that comprises the storage member of other permanent magnet should have the design of truncated cone.It is enough wide that gap between the permanent magnet of interlock be can be, so that yarn passes through without restriction, and still storage member produced the high confining force that rotates.

Particularly, for the sensor that on the circumference zones of different of storage member, moves, can pre-determine the turned position of storage member by place permanent magnet-can find the sensing device of best operating condition in described position.

The internal diameter of the small-diameter end portions of ring support should be littler than the external diameter of accumulator drum.

At the front end of the storage member that is designed to bar retainer (rod cage), the insert of a jar shape is advantageously fixed, and contains permanent magnet.The insert utilization is at the clearance envelope that can get under arbitrary speed on the front end of storage member.In addition, insert is favourable for making and assembling, and it has outwards covered the pivot bearing of storage member, is formed with the truncated cone head of the storage member that is beneficial to yarn control.In addition, insert has prevented to hinder the excessive velveteen deposition of yarn operation in described zone.

Here, the circular cone drift angle between 60 ° and 75 ° is favourable.

For comfortable and wear a new yarn, the spool that is provided with winding unit thereon should be formed for the manual joint conductive channel of wearing an air-flow of wearing the silk pin of silk or being used for Pneumatic stringing with saving time.Therefore when ring support moves to threading position, from new yarn can be by hand easily by weft brake with arrive the place of extracting the hole out, new yarn moves up by spool and winding unit fast and enters the surf zone of storage member.

The state of wearing silk to storage member lip-deep in advance is by in the yarn conductive channel of the roller tube end of entrance side or wear an air blast nozzle and can especially easily reach, and described air blast nozzle is incorporated into conductive channel, and forms part and wear the required air nozzle of silk.New yarn needs for example only to be brought into the zone of wearing an air blast nozzle after operation, and is blowed automatically by conductive channel and upwards arrive storage member, and it wears silk in the extraction hole by hand control and by the Yarn Brake that exposes there.

In the mode of embodiment the present invention is described with reference to accompanying drawing, wherein:

Fig. 1 is at the axial direction part of operating position according to yarn feeder of the present invention.

Among Fig. 1, yarn feeder F is specially adapted to knitting machine, comprises a housing H who is fixed to the chuck (not shown) on the knitting machine by clamp holder 1.Housing H has an X, and basic and this X of transversely arranged extension arm that is fixed to housing 2 extends abreast.Be provided with the electric drive motor M of spool S in housing H, its axle overlaps with axle X, and is supported rotationally in the bearing 22 of housing H.Bearing 22 partially overlaps in the direction of axle X at least with motor M.On spool S, winding unit W is in the mode of lateral inclination, and for example the form with winder extends out, and installs in a fixed manner.The storage member D that has hub and pivot bearing 15, for example with the form of bar retainer, supported in mode free to rotate in the end of spool S, described spool S stretches out above winding unit W.In storage member D, advancement component 13 supports by pivot bearing 12, described bearing 12 tilts to make that relative to spool X because the rotating of spool S, bearing 12 carries out a kind of tumbling motion, thereby outwards clamps and the coiling yarn coil is pushed into forward the free front end of storage member D between the bar 14 of storage member D.Yarn feeder F is mainly used in the position shown in Fig. 1, promptly in the position of a vertical stand-up.

Among Fig. 1 with operating position in the coaxial ring support R of axle X in trunnion bearing 3, preferably the free end at extension arm 2 links to each other with housing H.Trunnion bearing 3 is provided with an axle at the free end of extension arm 2, this axle vertical with axle X and and storage member D be similar to tangently, and combine with ring support R with carriage 5.The retainer detent 7,6 that limits the illustrated operation position of ring support R is arranged between carriage 5 and the extension arm 2.In addition, comprise that the inclination extension arm 8 with the coaxial extraction hole 9 of axle X is fixed on the ring support R.

Ring support R comprise one step-like around annex 4, described annex 4 is opened to storage member D, as for example Yarn Brake B of annular (the straw ring that for example utilizes intrinsic gap (radical play) to insert) that can select to use, described Yarn Brake contacts in the operating position of ring support R with at the retraction edge of the free front end of storage member D or with wherein outer shroud touch.In the illustrated embodiment, Yarn Brake B is elastic and the so-called grass ring of the tooth of tilted alignment or hair.Perhaps, brush ring or sheet ring can be used as Yarn Brake B or the so-called ring-shaped brake in annex 4, this ring-shaped brake comprise a support ring supported in annex and a frusto-conical periphery continuous the annular stop band, for example so-called flexure actuator, it at the retraction edge of storage member D by axial pressure.

Because because the rotation of spool S, storage member D is stowed together by pivot bearing 15, so storage member D must be with respect to the housing H support that is fixed.As a result, ring support is designed to the chuck of several permanent magnet P2 and other permanent magnet P in addition, and permanent magnet P2 for example is embedded in the ring support R, and permanent magnet P1 and permanent magnet P2 are in line and arrange and belong to storage member D, locate at the free front end of storage member D.Described free front end is formed by an insert 17, and this insert 17 is fixed on the front end of storage member D by a bolt 18.Permanent magnet P1, P2 can be with annular spread on corresponding peripheries, and axle X tilts relatively.They apply magnetic action each other by the peripheral clearance between the front end of ring support R and storage member.With respect to the magnetic force of the permanent magnet P1 that distributes to storage member P, the magnetic force of distributing to the permanent magnet P2 generation of housing H has stoped storage member D and spool S corotation.

Ring support is essentially truncated cone, preferably has short cylindrical section 20 that wherein is provided with annex 4 and the conical section 19 that is provided with permanent magnet P2.Inside face can be smooth (the damaged effect of balloon).

In addition, extension arm 2 has the sensor 21 that detects yarn and storage member D.Signal by sensor 21 output can be used for controlling and driving motor M, so that according to separately needs, can observe a specific yarn supply on storage member D, described yarn supply changes in predetermined minimum and maximum limit.The weaving loom of yarn by consuming, for example the knitting machine or the yarn supply that also can be loom from the storage member D are outside the front end of storage member D, and by being similar in 9 extractions of the extraction hole of axle directions X, described yarn rotates around the front end of storage member D, and carry out yarn by Yarn Brake B and control, produce a specific substantially invariable yarn tension.

Trunnion bearing 3 also can be arranged between the extension arm 2 and shell holder at the place, top bigger than the zone that illustrates, and departs from so that whole extension arm 2 can rotate with ring support R.In addition, can additional design trunnion bearing 3 as pivot bearing so that ring support R is removed, if necessary, after rotating, also can remove from axle X side direction.In addition, trunnion bearing 3 can be designed to pull-type bearing, wherein ring support R only can be introduced in the threading position of a directions X.Another kind may be, the ring support that remains on the operating position by magnetic force under any speed only hangs in the extension arm 2, is connected with this hook all to be broken away from, and ring support is removed.

For yarn being penetrated into yarn feeder F, can utilize standard silk pin T, it is pushed through the interior pipe 11 that a hollow start-up portion by spool S forms path 10 and winding unit, and yarn is passed through from tractive wherein.The yarn end is held tightly, and penetrates into extraction hole 9 by Yarn Brake B when ring support is moved into threading position.Because at the threading position of ring support R, storage member D no longer maintains static, so turned position wherein can be adjusted, for example is used to clean storage member or scanning area, and new turned position can be fixed for storage member D.Be pulled by after extracting hole 9 out at yarn, ring support R gets back to operating position once more, and it is fixed by magnetic force therein, and prevents that storage member D from locating permanent magnet P1, P2 and in the predetermined turned position one corotation once more in several possible pass through.Yarn Brake B will work to the yarn of the loose location originally on storage member D.After motor M started, new coil was wound up on the storage member D immediately, prevented the yarn resistance that Yarn Brake B keeps, and yarn feeder F will prepare to be used for standard operation once more rapidly like this.

Claims

1. a yarn feeder (F) is applicable to knitting machine, comprises a housing (H), and wherein storage member (D) is rotatably positioned on the spool (S) of the pivotable drive of a winding unit (W); Distribute to housing and storage member and mutual orientation respectively, while magnetically cooperates and supports the permanent magnet (P1 that storage member prevents its relative housing corotation with spool securely, P2), with be fixed to housing and be provided with the extension arm (2) of at least one ring support (R) that has endless yarn drg (B) thereon, described endless yarn drg (B) with the concentric operating position of storage member and the front end mutual action of storage member, press on Yarn Brake, to produce with respect to the contact of storage member, described ring support (R) is at operating position and go into operation and be conditioned between the position, separated by the front end of storage member at the described position Yarn Brake (B) that goes into operation, it is characterized in that, the permanent magnet (P2) of distributing to housing (H) is integrated in the ring support (R) that has Yarn Brake (B), for supporting storage member (D), support ring support (R) by spool (S) with respect to the extension arm on the rotation direction of housing (H) (2), by described permanent magnet (P2) with prevent with spool (S) corotation, the permanent magnet (P1) of distributing to storage member (D) is positioned over its front end region, the position that goes into operation at ring support (R), the permanent magnet (P2) of distributing to the permanent magnet (P1) of storage member (D) and distributing to ring support (R) is separated by magnetic, carry out free rotational motion to discharge storage member around storage member axle (X), described ring support (R) in the trunnion bearing (3) of housing (H) extension arm (2) along moving between operating position and the curve mobile alignment that goes into operation between the position, described trunnion bearing (3) is located at an end of extension arm (2), it comprises the pivot perpendicular to storage member (D) axis (X), retainer detent (6,7) be configured to limit operating position, ring support (R) passes through between permanent magnet (P1 at operating position, P2) magnetic force between is supported on the retainer detent (6,7).

2. according to the yarn feeder of claim 1, it is characterized in that, arm (8) with extraction hole (9) is arranged on the ring support (R), and is designed to a kind of setting device of ring support (R), is used at the operating position and the difference manual adjustment ring support (R) between the position that goes into operation.

3. according to the yarn feeder of claim 1, it is characterized in that ring support (R) has the shape of frustum of a cone ring (19,20), small-diameter end portions permanent magnet (P2) at it is placed with annular, and free leading section storage member (D), that support permanent magnet (P1) has frusto-conical.

4. according to the yarn feeder of claim 1, it is characterized in that, by permanent magnet (P1, P2), be fixed around one or several static turned positions of the storage member (D) of storage member axle (X) being positioned within ring support (R) and the storage member (D) with respect to a default angle that is installed in the sensor (21) on the housing extension arm (2).

5. according to the yarn feeder of claim 3, it is characterized in that the free front end that is designed to the storage member (D) of bar retainer forms by insert (17), the front side of described insert (17) is gone up fixing at storage member (D), and it is a jar shape.

6. according to the yarn feeder of aforesaid claim 3, it is characterized in that the circular cone drift angle of described leading section and ring support (R) is between 60 ° and 75 °.

7. according to the yarn feeder of aforesaid claim 1, it is characterized in that the continuous conductive channel (10) that designed to be used a pin (T) or wear a windstream (J) at the internal channel (11) of the hollow section of the spool (S) of entrance side and winding unit (W).

8. according to the yarn feeder of claim 7, it is characterized in that, be incorporated into the entrance side end that an air blast nozzle (N) is arranged on spool (S) of wearing of conductive channel (10).