CN1191399C

CN1191399C - Feed carrier for flat-bed machine

Info

Publication number: CN1191399C
Application number: CNB011173424A
Authority: CN
Inventors: F·施米德
Original assignee: H Stoll GmbH and Co KG
Current assignee: H Stoll GmbH and Co KG
Priority date: 2000-04-04
Filing date: 2001-04-04
Publication date: 2005-03-02
Anticipated expiration: 2021-04-04
Also published as: EP1143056B1; DE10016760A1; CN1316560A; ES2217048T3; JP3455910B2; JP2001355159A; EP1143056A2; EP1143056A3; DE50101949D1

Abstract

A yarn guide (11) for a flatbed knitter, has a yarn guide arm (31). The yarn (10) passes around a deflection roller (41) from a horizontal path at right angles to the center axis (71) of the guide arm into an angled downward path, to the guide eyelet (51) at the end of the guide arm (31).

Description

The thread-carrier that is used for straight-bar machines

Technical field

The present invention relates to a kind of thread-carrier that is used for straight-bar machines, it has a guide arm and a yarn rotaring forward roller that is used for yarn.

Background technology

So far, be used for the thread-carrier of straight-bar machines by a thread-carrier balladeur train formation in the motion of knitting needle spacing upper horizontal.On this thread-carrier balladeur train, be furnished with a guide arm that stretches out downwards to knitting needle supply hosiery yarns.At this, this guide arm end thereon has one first ring and then has one second ring in its bottom.In last ring, the hosiery yarns of being supplied with by yarn bobbin turns over about 90 ° and enters into the upright position along the guide arm from horizontal level.This yarn continues to turn to the transport direction that enters into yarn from vertical direction on the ring on guide arm top, this direction is determined with respect to the relative position of knitting needle by guide arm top.Yarn twice in two rings of guide arm turns to and makes hosiery yarns owing to the friction that produces in ring has had higher yarn tension.The characteristic of hosiery yarns is especially depended in the increase of this tension force, and just its elasticity, its thickness and surface property thereof also depend on the contact length of yarn on ring, therefore is to be difficult to control.Particularly under the elastomeric yarn situation, the increase of the yarn tension that two steering ring circles by the guide arm form may cause some problems in knitting process.

Summary of the invention

Task of the present invention is to provide a kind of thread-carrier, and the increase of yarn tension is wherein compared obviously with traditional thread-carrier and reduced.

Said task is to utilize a kind of thread-carrier that is used for straight-bar machines to finish, this thread-carrier has a guide arm and a yarn rotaring forward roller that is used for yarn, this yarn rotaring forward roller flows to a yarn guiding ring that is arranged on the guide arm top with hosiery yarns, said rotaring forward roller couples together by the drive unit of a mechanical device and this thread-carrier, therefore, when the direction of motion of this thread-carrier was reverse, said rotaring forward roller was automatically with respect to the central shaft of this thread-carrier bias level distance A forward.

With respect to traditional thread-carrier, this rotaring forward roller that also is used for hosiery yarns by one replaced on the guide arm on ring, this rotaring forward roller increases the tension force of hosiery yarns hardly, because friction in fact occurs between yarn and deflector roll.

By of the side direction biasing of yarn rotaring forward roller, can also reduce the friction of hosiery yarns on the yarn guiding ring of guide arm top layout with respect to the thread-carrier central shaft.This rotaring forward roller preferably can so be guided yarn into be positioned at guide arm top yarn guiding ring in addition, forms a straight angle between yarn line segment of guiding yarn guiding ring into and the yarn line segment that leaves yarn guiding ring to cause.This once makes hosiery yarns almost turn to traditional thread-carrier of 90 ° to compare with those, has reduced the contact length of hosiery yarns on yarn guiding ring.

Preferably can to the yarn rotaring forward roller with respect to the vertical center axis of thread-carrier horizontal range regulate to adjust best angle.In addition,, advantageously said rotaring forward roller can be arranged in the place ahead of the thread-carrier direction of motion, be positioned at before the central shaft of thread-carrier in order to realize best yarn tension.

Can couple together by the drive unit of a mechanical device, can automatically regulate the optimum position of rotaring forward roller like this according to the position of thread-carrier with said rotaring forward roller and thread-carrier.In addition, said rotaring forward roller also will not have friction as far as possible.To this advantageously, said rotaring forward roller is installed with very little rolling friction and made with a kind of light material.Because irrelevant with the coiling length of hosiery yarns, so rotaring forward roller does not almost increase the tension force of hosiery yarns.

Description of drawings

To be described in detail a preferred embodiment of the present invention by accompanying drawing below.

Wherein:

Fig. 1 is the schematic diagram of the thread-carrier of prior art;

Fig. 2 is the schematic diagram of thread-carrier of the present invention on the direction of motion left;

Fig. 3 is the schematic diagram of thread-carrier of the present invention on the direction of motion to the right.

The specific embodiment

The thread-carrier 1 of the prior art of Fig. 1 has a thread-carrier balladeur train 2 and a guide arm 3 disposed thereon.At this, thread-carrier balladeur train 2 along arrow 60 to left movement.Guide arm 3 has a last ring 4 and lower toroidal ring 5 that is used for hosiery yarns 10.Hosiery yarns 10 before the ring 4, use 10 respectively at each line segment between ring 4 and 5 and between ring 5 and knitting needle 100 ', 10 " and 10 represent.Last ring 4 forms the turning point 40 of a hosiery yarns 10, and like this, hosiery yarns 10 has changeed about 90 ° from horizontal level and entered into upright position (yarn line segment 10 ").On second ring 5, hosiery yarns 10 turns over about 90 ° once more on turning point 50.100 hosiery yarns line segment 10 and horizontal angle are represented with 20 from ring 5 to knitting needle.The angle of hosiery yarns line segment 10 and vertical line is represented with 30.This shows that hosiery yarns 10 has turned over a total angle that is combined into by 20 and 30 altogether on turning point 50.

By two turning points 40 and 50 and the friction that produced between hosiery yarns 10 and ring 4 and 5 makes yarn tension obviously improve, this is disadvantageous to knitting result, particularly under the flexible situation of hosiery yarns.

In order to address this problem, an embodiment of thread-carrier 11 of the present invention has been described in Fig. 2 and 3, this embodiment has a thread-carrier balladeur train 21 and a guide arm 31 equally.Yet, a ring 51 is arranged on its top on 31 on this guide arm.Do not establish ring at upper area.For this reason, a rotaring forward roller 41 that is used for hosiery yarns 10 is set.This rotaring forward roller 41 on the direction of motion of thread-carrier 11 with respect to its central shaft 71 side direction distance A of having setovered.Hosiery yarns 10 is thus at line segment 10 " and form a straight angle between 10 ; thus at turning point 150 places of ring 51, be significantly smaller than the friction that is produced under turning point 50 situations at the yarn guiding ring 5 of the thread-carrier 1 of Fig. 1 in the friction that is produced between hosiery yarns 10 and the yarn guiding ring 51.Rotaring forward roller 41 is adjustable apart from the distance A of central shaft 71, so just can " and the angular adjustment between 10 becomes the angle an of the best with hosiery yarns line segment 10 according to the situation of employed hosiery yarns 10.In addition, rotaring forward roller 41 also very gently and with very little friction is installed on the axle 61, and like this, the yarn tension of hosiery yarns 10 has only very little increase.

Rotaring forward roller 41 preferably couples together by a drive unit at this mechanical device that is not shown specifically and thread-carrier 11, so that the position of rotaring forward roller shown in Figure 3 41 can automatically occur on the counter motion direction of thread-carrier 11.At this moment it in the place ahead of the direction of motion 70 of thread-carrier 11 with respect to its central shaft 71 distance A of having setovered." and reappeared same angle between 10 at this also at yarn line segment 10.The contact length of hosiery yarns 10 on rotaring forward roller 41 is than smaller under the deployment scenarios of Fig. 2 rotaring forward roller 41, and this does not influence yarn tension, because the coiling length of friction on rotaring forward roller 41 and hosiery yarns 10 is irrelevant.

Claims

1. thread-carrier (11) that is used for straight-bar machines, it has a guide arm (31) and has a yarn rotaring forward roller (41) that is used for yarn (10), this yarn rotaring forward roller flows to a yarn guiding ring (51) that is arranged on guide arm (31) top with hosiery yarns (10), it is characterized in that: said rotaring forward roller (41) couples together by the drive unit of a mechanical device and this thread-carrier, therefore, when the direction of motion of this thread-carrier (11) is reverse, said rotaring forward roller (41) is automatically with respect to the vertical center axis (71) of this thread-carrier bias level distance (A) forward, the yarn guiding ring (51) that said rotaring forward roller (41) is so guided yarn (10) into be positioned at guide arm (31) top, (10 ") form a straight angle with the yarn line segment (10 ) that leaves yarn guiding ring (51) to cause the yarn line segment of guiding yarn guiding ring (51) into.

2. according to the thread-carrier (11) of claim 1, it is characterized in that: said yarn rotaring forward roller (41) is adjustable with respect to the horizontal range (A) of the vertical center axis (71) of thread-carrier (11).

3. according to the thread-carrier (11) of claim 1 or 2, it is characterized in that: said rotaring forward roller (41) is installed on the axle (61) with very little rolling friction.

4. according to the thread-carrier (11) of claim 1 or 2, it is characterized in that: said rotaring forward roller (41) is made with a kind of light material.