CN101501260A

CN101501260A - Yarn delivery device having a removable yarn delivery drum

Info

Publication number: CN101501260A
Application number: CNA200680055509XA
Authority: CN
Inventors: R·考夫曼; M·米克斯纳; M·赫曼
Original assignee: Memminger IRO GmbH
Current assignee: Memminger IRO GmbH
Priority date: 2006-08-02
Filing date: 2006-08-02
Publication date: 2009-08-05
Anticipated expiration: 2026-08-02
Also published as: TWI348507B; WO2008014805A1; CN101501260B; EP2047018B1; EP2047018A1; TW200809027A

Abstract

A yarn delivery device according to the invention has a rotatably mounted shaft with a yarn delivery wheel which is mounted removably. A fastening element in the form of a nut or a screw, which are provided in each case with a handle, serves to fasten the yarn delivery wheel. As a result, the yarn delivery wheel can be exchanged by hand without the aid of a tool. As an alternative or in addition, the attachment of a tool is advantageously possible. A bearing face, which points in the axial direction, of an abutment preferably serves to adjust the yarn delivery wheel in a wobble-free manner. The radial orientation, the axial orientation and the wobble-free axial orientation are brought about by different functional faces, namely the flat face (30) and the cylindrical outer circumferential face of the shaft (7).

Description

The Yarn feeder that has removable yarn feeding roller

The present invention relates to a kind of Yarn feeder, particularly a kind of active yarn-feed wheel.

Yarn feeder is the known in principle equipment that is used for textile machine, for example circular knitting machine in large quantities.They are used for carrying in check yarn to each knitting position.For example EP 033 482A1 discloses a kind of Yarn feeder that has support for this reason, and this support is set for and is fixed on the textile machine.Support has the jaw (Maul) that has trip bolt accordingly for this reason.Having in the support upper support can be along the axle of vertical direction rotation.This axle has a plurality of belt pulleys, and axle is driven by these belt pulleys.

Lower end at axle is supported with thread wheel, and this thread wheel is held at least once by yarn, carries described yarn thus when thread wheel rotates.

Thread wheel by packing ring and nut be fixed on the axle the lower end, described nut is screwed onto on the threaded end (Gewindestummel) that is arranged on the axle.Replacing for thread wheel is stipulated.

By US-PS 4 092 006 known a kind of storage yarn yarn feeders that have storage yarn cylinder, this storage yarn cylinder remains on the axle that rotatably supports.In order to connect, axle is provided with screwed hole, immerses oneself in machine screw to be screwed in this screwed hole.The described machine screw of immersing oneself in keeps the wheel hub of thread wheel by packing ring, and makes this wheel hub axially press against on the bearing block that is arranged on the axle.

According to a kind of alternative embodiment, axle has the threaded end of the end that axially protrudes in lower end side in the position of screwed hole, and the machine screw that storage yarn cylinder is kept is positioned on this threaded end.Replacing for storage yarn cylinder is stipulated.

Based on this, the objective of the invention is, a kind of Yarn feeder is proposed, it can adopt simple mode to adapt to different yarn qualities.

Described purpose is achieved by the Yarn feeder according to claim 1.

Yarn feeder of the present invention has thread wheel, and this thread wheel is connected with the axle that rotatably supports by remaining the fixture of manual control.This fixture that remains manual control is and the internal thread of axle or the screw or the nut of external screw thread engagement.It is provided with handle, and this handle is designed to realize the manipulation of tool free, and promptly tool free ground is with hold-down screw or nut screwing clamping or pull down.No matter the power transmission shaft of thread wheel still is not always the case to anticlockwise to right rotation.

According to preferred embodiment a kind of, fixture is used to make thread wheel and axle frictional fit ground lotus root to join.Preferably not carrying out form fit between axle and thread wheel connects.This is convenient to thread wheel is assembled on the axle, because needn't regulate special position of rotation, so that axle and thread wheel interconnect.If but want so, the form fit that also can add connects, even thoroughly do not tighten the antitorque lotus root connection that also can realize between axle and the thread wheel so that guarantee hold-down screw or nut.

The handle that is arranged on hold-down screw or the nut for example can be the plastic components that sprays.Preferred this plastic components is flat relatively structure, thereby it does not protrude in or only protrude in slightly the lower limb of thread wheel.Whereby and by avoiding the face radially on handle, can avoid when thread wheel rotates, producing undesirable air flow, this air flow also can cause flocking to be deposited on the handle.

Preferably except handle, fixture also is provided with the online structure of the lotus root that is used for fastening means.The online structure of this lotus root for example can be hole, screw wrench groove or the screw wrench cross bath etc. that have the hexagonal cross section.This instrument pilot hole can perhaps also can be tightened at hold-down screw or nut as the installation auxiliary body in the industrial production in batches, thereby uses can't manually pull down the time.

When thread wheel is manually screwed on and is backed out, even still need consider seldom to have the experience operation also can realize the revolution of thread wheel.It is important in this that requirement.Because of not turning round the yarn feeding amount fluctuation that causes, thread wheel do not allow.

A kind of favourable embodiment of the present invention has solved this problem, and its mode is thread wheel radially to be adjusted and axially adjusted by different function element.Preferably in being used to hold on the hole of axle and being provided with the edge or the collar (Bund) of thread wheel, this edge or collar plane earth abut on the axle, and are used herein to thread wheel is carried out correct radial directed.There is certain clearance at this, and also allows.This gap can realize easily thread wheel being plugged or being left behind.On the contrary, interruptedly or continuously (

) ring surface of structure is used to overcome various swings and impacts.Thread wheel axially abuts on this ring surface.Hold-down screw or nut make thread wheel press against on this ring surface.Eliminate thus because of location tolerance and setup error and positional fault that the manufacturing tolerance of the collar in the hole of thread wheel is caused.Although even this has guaranteed that thread wheel is through after repeatedly changing and have certain production tolerance also not have swingingly to turn round.Thread wheel can be the bent plate parts.

Preferred fixture is a hold-down screw.This hold-down screw is preferably consistent with the hold-down screw that is fixed on thread wheel on the textile machine to be utilized again.End face at hold-down screw preferably is provided with the ring-type blade.Can use hand-power that thread wheel is fixed on the textile machine securely and enduringly on the hold-down screw thus.The ring-type blade can realize penetrating the enamelled coating that is positioned on the machinery ring, is created in electrically contacting between support and the machinery ring thus.The ring-type blade also makes hold-down screw to the center, and wherein the ring-type blade is worked into the degree of depth in the machinery ring less than the possible tip that substitutes.

Other details of favourable embodiment of the present invention is the theme of dependent claims, accompanying drawing or specification.Embodiments of the invention have been shown in the accompanying drawing.Shown in the figure:

Fig. 1 is the side view of the schematic simplification of Yarn feeder of the present invention;

Fig. 2 is the partial perspective view of observing according to the bottom side from thread wheel of the Yarn feeder of Fig. 1;

Fig. 3 is the vertical cutaway view according to the shaft-hub bindiny mechanism of the thread wheel of Fig. 1 and 2;

Fig. 4 is the vertical view according to the fixture of Fig. 3; With

Fig. 5 is a kind of vertical cutaway view of embodiment of modification of the shaft-hub bindiny mechanism of thread wheel.

Fig. 1 illustrates Yarn feeder 1, and this Yarn feeder is used for to the textile machine feeding yarns.If this textile machine for example is a circular knitting machine, it is provided with retainer, so-called machinery ring (Maschinenring) 2 so, and a plurality of this Yarn feeders 1 are positioned on this machinery ring, and yarn are provided to knitting position (Strickstelle) respectively.Described to be provided at this be positive, promptly do not slide basically.That is to say, carry the amount of thread of regulation for each knitting position.

Yarn feeder 1 has support 3 for this reason, and this support is connected with machinery ring 2 by suitable fixture 4.Fixture 4 for example is made of the recessed of hold-down screw 5 that be equipped with of the jaw shape in the support 3.For the ease of handling, this fixture is provided with handle 6.This handle for example can be made of the plastic components that sprays (anspritzen).

Yarn feeder 1 has the axle 7 that rotatably is supported on the support 3, and at least one belt pulley 8 is being supported in this upper end above support 3, and this belt pulley is used for driving shaft 7 rotatably.Alternatively can be provided with a plurality of this belt pulleys 8, these belt pulleys can be respectively and different belt engages.

Below support 3, axle 7 is connected with the thread wheel 9 that is used for delivered yarn 10.Described yarn passes a plurality of

guide eyes

11,12,13 and Yarn Brake 14, and this Yarn Brake is that benchmark is arranged on before the thread wheel 9 with the moving direction of yarn 10, and for example by constituting by the mutually attached ring of magnetic force.

Thread wheel 9 is bent plate parts or deep-draw parts preferably.As shown in Figure 2, it has the end wall (Stirnwand) 15 of bottom, and edge 16 protrudes in this end wall downwards." downwards " means the direction that its free end extends that exceeds of axle 7 at this.But also can use be designed to the bar cage (

) thread wheel.This thread wheel can be rigid structure.Alternatively, this thread wheel can be provided with movable yarn feed mechanism, as its record to some extent in DE 31 05 990 A1.So this thread wheel is made of two shank nails drums that insert mutually, the rotation of these two shank nails drums tilts the minority several years mutually.A shank nails drum is fixed on the axle, and another shank nails drum is supported on the support 3 by the ball bearing that tilts.Relative motion by between the shank nails drum of two rotations synchronously causes the feeding of the yarn package that holds shank nails drum.

Above edge 16, be provided with the yarn supply section 17 of moulding suitably, be provided with the tapered feeding district 18 that attenuates above it.Thread wheel 9 alternatively can be a bar cage etc.

For example the fixture 18 of form for the screw 20 that is provided with handle 19 is used for thread wheel 9 is fixed on axle 7, and this screw is as seen from Figure 3.In the present embodiment, screw 20 is screwed in the screwed hole of offering coaxially in axle 7 21.Screw 20 is provided with corresponding external screw thread 23, and this external screw thread and internal thread 22 are adaptive.Internal thread 22 preferred end face rollbacks, thereby 22 several commentaries on classics of engagement of external screw thread 23 and internal thread (for example being less than 10 changes, and preferably being less than 5 changes) with respect to axle 7.Can dismantle and fixing thread wheel with a few handle thus.So can easily make short relatively internal thread 22 in addition.

The head 24 of screw 20 is sealed by plastic body 25, and this plastic body has formed handle 19.As shown in Figure 4, the vertical view of handle for example is square, wherein

forms handle calixconcavity

26,27 on its edge.These handle calixconcavities are flat, thereby all are not parallel to the radially face of R that is at arbitrary place.In addition as shown in Figure 2, handle 19 is preferably flat, thereby it does not protrude in lower limb 16.But it also can protrude in edge 16 downwards as shown in Figure 1 slightly.

Head 24 also is provided with pilot hole 28, so that instrument, for example inner hexagon spanner (Innensechskant) are assembled on the screw 20 antitorquely.In the opposite end, on the end face of the screwed bar of screw 20, be configured with ring-type blade 28, described blade is concentric with vertical jackshaft of screw 20.

Excircle, the particularly lower end area of axle 7 are cylindrical structural.Be provided with sleeve 29 in addition on axle 7, this sleeve is formed for the bearing block (Widerlager) of the end wall 15 of thread wheel 9.Sleeve 29 axially immovably is connected with axle 7.The end face of this sleeve has the plane 30 of flat annular, and this plane is used for thread wheel 9 is not had swingingly directed.Sleeve 29 is defined as annular space 31 with the outer surface of axle 7 in addition, and this space is used to hold the pipe flange (Rohrflansch) 32 of constructing of thread wheel 9 on end wall 19.Pipe flange is defined as and is roughly columnar hole, and the axial length in this hole is greater than the thickness of the end wall 15 that is made of sheet material.Along radially, pipe flange 32 has at a distance of the little gap of axle 7, and this gap is in 1 percent or 1/10th millimeters the scope.

Between screw 20 and end wall 15, be provided with packing ring 33.End wall clamps between packing ring 33 and plane 30.

At work, the cog belt that is not shown specifically makes belt pulley 8 rotation, and makes thread wheel 10 to the right or to anticlockwise with this belt pulley.The yarn that holds thread wheel 9 is fed to knitting machine or OTHER TEXTILE MACHINERY thus.Handle 19 is hidden by edge 16 in this major part.Handle only produces little air movement, so be not as the ventilator blade.Therefore reduced the deposition flocking.

If change or the cleaning thread wheel, then it can be pulled down from axle 7.Under the auxiliary situation of no instrument fixture 18 is pulled down, its mode is belt pulley 8 or thread wheel 18 to be held, and changed hands handle 19 with the another hand-screw for this reason.If screw is back-outed from screwed hole 21, then can change thread wheel, and screw 20 is tightened once more.At this moment, the pipe flange 32 of another thread wheel is inserted into again in the space 31 of annular, and screw 20 is tightened.This screw presses against wall 15 on the plane 30 by packing ring 33, simultaneously thread wheel 9 is not had swingingly directed.

Screw 20 is replacedly consistent with hold-down screw 5.This is significant for the operator, even he does not understand Yarn feeder, but does not promptly understand the parts that fixture 18 is manual teardown.Two hold-

down screws

5,20 can mutual alternative.At this, the blade that loses function has obtained its function.If screw 20 is used as hold-down screw 5, then in view of the effect of blade 28, this screw is fixed on Yarn feeder 1 on the machinery ring 2 stably in a long term.Between machinery ring 2 and support 3, produce in addition and be electrically connected.According to a kind of favourable embodiment, the length of screw 20 and the size of screw thread are following at least determines that promptly screw 20 can be used as hold-down screw 5.

Fig. 5 shows a kind of embodiment of modification.For this embodiment, corresponding to the part not explanation in addition below of aforementioned figures mark and explanation.

Axle 7 is provided with projection 34, and this projection has external screw thread 35.In the position of head 24 nut 36 is housed, this nut is sealed by plastic body 25.Embodiment is described as described above, in plastic body 25 and fixture, the connection that promptly produces material fit between the nut 36 here.Here saved the feasible situation of assembly tool.

According to a kind of embodiment of modification, remain in the plastic body 25 to nut 36 form fit.Form fit can be subjected to the auxiliary of frictional fit, thereby plastic body 25 can break away from nut 36.So instrument can be assembled on the nut 36 in this case.Nut 36 for example can make hex nut.The intensity of the frictional fit between nut 36 and plastic body 25 preferably makes plastic body 25 can not come off from nut 36 accidentally.Frictional fit can be subjected to the auxiliary of kayser connection.

Yarn feeder of the present invention has the axle that has thread wheel that rotatably supports, and this thread wheel removably is mounted.Form is to be respectively equipped with the nut of handle or the fixture of screw is used for fixing thread wheel.Manually assisting of tool free changed thread wheel thus.Advantageously, can be alternatively or assembly tool additionally.The supporting surface along end on observation of preferred axes bearing is used for not having swingingly adjusts thread wheel.Orientation radially and the axial directed and axial orientation of not having a swing by different function faces, be that the columniform outer circumference surface of plane 30 and axle 7 is realized.

Reference numerals list

1 Yarn feeder

2 machinery rings

3 supports

4 fixtures

5 hold-down screws

6 handles

7

8 belt pulleys

9 thread wheels

10 yarns

11 guide eyes

12 guide eyes

13 guide eyes

14 Yarn Brakes

15 end walls

16 edges

17 yarn supply sections

18 fixtures

19 handles

20 screws

21 screwed holes

22 internal threads

23 screw threads

24 heads

25 plastic bodies

26 handle calixconcavities

27 handle calixconcavities

28 blades

29 sleeves

30 planes

31 spaces

32 pipes flange

33 packing rings

34 projectioies

35 external screw threads

36 nuts

Claims

1. a Yarn feeder (1) has:

Support (3), it is designed to be fixed on the textile machine;

The axle of Zhi Chenging (7) rotatably, it is arranged on the end that is threaded (22);

Be used for driving rotatably the drive unit (8) of described axle (7);

Thread wheel (9), its hole are set for the end that the centering heart is held described axle (7);

Fixture (20), it has the adaptive screw thread (23) of screw thread (22) with described axle (7), and tighten with described axle (7), wherein said fixture (20) has handle (19), and described handle (19) is designed to tool free and described fixture (20) can be tightened and pulled down.

2. Yarn feeder as claimed in claim 1 is characterized in that, described drive unit (8) is designed to make described axle (7) to turn right and turn left.

3. Yarn feeder as claimed in claim 1 is characterized in that, described drive unit (8) is connected with described axle (7) by at least one antitorquely or attachable belt pulley (8) constitutes.

4. Yarn feeder as claimed in claim 1 is characterized in that, is provided with the bearing block (29) that is used for axially supporting described thread wheel (9) on described axle (7).

5. Yarn feeder as claimed in claim 4 is characterized in that, described bearing block (29) has the supporting surface (30) towards axial annular.

6. Yarn feeder as claimed in claim 1 is characterized in that, middle, that the have described hole at least section of described thread wheel (9) is made of sheet material.

7. Yarn feeder as claimed in claim 6 is characterized in that, described hole has edge (32), and columnar passage has been determined at this edge, and the axial length of passage is greater than the thickness of sheet material, and described section is made of this sheet material.

8. as claim 4 and 7 described Yarn feeders, it is characterized in that, between described bearing block (29) and described axle (7), be provided with the annular space (31) that is used to hold described edge.

9. Yarn feeder as claimed in claim 1 is characterized in that, the cylinder shape inner wall of described edge (32) seamlessly abuts on the lateral surface of described axle (7).

10. Yarn feeder as claimed in claim 1 is characterized in that, described fixture is nut (36).

11. Yarn feeder as claimed in claim 1 is characterized in that, described fixture is screw (20).

12. Yarn feeder as claimed in claim 1 is characterized in that, described fixture has the online structure of the lotus root that is used for instrument.

13. Yarn feeder as claimed in claim 12 is characterized in that, the online structure of described lotus root is the hole that is used to hold the hexagonal of inner hexagon spanner.

14. Yarn feeder as claimed in claim 1 is characterized in that, described handle is made of the plastic components (25) that is injected on the described fixture (20).

15. Yarn feeder as claimed in claim 1 is characterized in that, described handle (19) is arranged in the space that is surrounded by the lower limb of described thread wheel (9).

16. Yarn feeder as claimed in claim 11 is characterized in that, described fixture (20) has ring-type blade (28) on its end face.

17. Yarn feeder as claimed in claim 16 is characterized in that, described fixture (20) is replacedly consistent with another fixture (5) that is used for described support (3) is fixed on the described textile machine.