CN1120081A

CN1120081A - Fine spinning machine without guider

Info

Publication number: CN1120081A
Application number: CN95108130.6A
Authority: CN
Inventors: H·施塔尔德; A·沃尔姆里
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 1994-06-30
Filing date: 1995-06-29
Publication date: 1996-04-10
Also published as: IT1276717B1; ITMI951270A0; BR9503009A; DE19514409B4; ITMI951270A1; JPH08100330A; DE19514409A1

Abstract

A drafting device and a device used for yarn twisting and coiling are arranged in a spinning frame. The axis line of a spindle is 3mm (A) away from a tangent (T) which is parallel to the axis line and opposite to a roller (33) of the drafting device; in this way, the distance (H) from the coiling area (B) to the clamping point (P) between the roller (33) and a pressing roller (33a) is 50mm-70mm. The fibre guide part of the drafting device and the axis line of the spindle form an angle (Beta) of 30 DEG and 50 DEG. The top of a yarn air ring is arranged on the surface of the roller (33). The structure of the invention leads to no twisting block on the yarn between the spindle and the drafting device, thus manufacturing the weak twisting yarns with low yarn breakage rate even in high-speed operation.

Description

The fine spining machine of machine without guider

The present invention relates to a kind of fine spining machine with twisting and coiler device and spindle and drafting system.

In fine spining machine with a drafting system and one twisting and coiler device, a thread-carrier is installed between drafting system and twisting and coiler device usually, thread-carrier yarn movement is concentrated on coiler device axle prolongation a bit on.This layout is for example in U.S. Patent No. 4,332, description arranged in 059.In described example, said apparatus is made up of with the coaxial mounted steel traveler of spindle a rotary spindle and one, if thread-carrier can axially moving with rings at spindle, so, spinning can realize constant substantially yarn tension, and this is because the air ring between rings and thread-carrier does not almost change.

When the productivity ratio of the fine spining machine that increases the above-mentioned type, it should be noted that especially when produce have low relatively revolution coefficient be referred to as the weak twist yarn time, if, broken yarn then usually occurs above certain spindle speed.

The objective of the invention is to design a kind of fine spining machine, it also can be soft twist yarn high running speed is provided.

The technical solution of above-mentioned purpose is: spindle is arranged on below the outlet side roller of drafting system, make spindle axis apart from the roller of spindle horizontally set on tangent line the distance that is 3mm to the maximum is arranged, wherein, tangent line is parallel with axis, like this, wrapping range on the spindle reaches a minimum range H＞50-70mm apart from a roller and an opposed bite that compresses between the roller, and do not have to settle the thread-carrier on the air ring summit of determining yarn between twisting and coiler device and drafting system, the angle between the fibre stream in spindle axis and the drafting system is between 30 °-50 °.

The present invention is based on this understanding, promptly settle the thread-carrier on the air ring summit between a definite spindle and the drafting system, turn is being applied on the yarn apart from the big distance of described thread-carrier, like this, on thread-carrier, keep described turn, so that low than on the thread segment after the thread-carrier of the twist coefficient on the thread segment between drafting system and thread-carrier.Consequently the tension force on the yarn between thread-carrier and the drafting system can be near the peak load point of yarn, and this may cause broken yarn under some unfavorable conditions.The minimizing of the distance between drafting system and the spindle is needs very, so as spindle during around the beginning of yarn process ballooning of yarn not too big, too big ballooning of yarn may produce unallowed high-tension.

Describe the present invention below with reference to the accompanying drawings in detail, wherein:

Fig. 1 represents the part detail drawing of drafting system and spindle;

Part schematic diagram on Fig. 2 representative ring spindle spinning frame longitudinal direction;

Fig. 2 a is the part detail drawing of Fig. 2;

The amended embodiment of the relative Fig. 2 of Fig. 3.

Spindle 22 shown in Figure 1 has an axis 21 and a plug-in mounting bobbin 24 thereon.Yarn 6 promptly forms reel for yarn around 7 around to spindle 22 on the bobbin 24, yarn extends along wrapping range B.For winding spindle 22, installed have ring rail 28, the device 20 of rings 281 and steel traveler 283.Spindle 22 and install 20 and be arranged to make wrapping range B one distance H=50-70mm to be arranged for the roller 33 of drafting system 30 outlet sides and the so-called bite P between the corresponding roller 33a.Drafting system 30 also comprises other roller, has only represented roller 32 and the roller 32a relative with it among the figure.Described roller 32a surrounds with apron 31 and is used to guide rove 5.Make apron near roller 33 as far as possible by thread-guide element 35.At the input side of roller 33 or roller 33a, a condensers 36 can be installed, it is infundibulate, is used to gather fibre stream, and the axis 21 of spindle 22 can have a ultimate range A=3mm apart from the tangent line T parallel with axis of roller 33.Be clear that by Fig. 1 the axis 21 of the axis of roller 33 and spindle 22 is orthogonal relative to one another.Yarn 6 around axis 21 rotations forms a so-called ballooning of yarn between roller 33 and steel traveler 283, the summit of air ring is on tangent line T, if ring rail 28 has bigger distance apart from roller 33, for the diameter that limits air ring can be provided with air ring stop collar 29.

When with a common thread-carrier such as a kind of when being referred to as pigtail shape thread-carrier and carrying out traditional spinning, for example using, the cotton thread of combing is 20 spies (tex), its spinning drops to the twist coefficient of α=100 only, and adopting a kind of structure of the present invention, the minimum twist system α of acquisition is between 80 and 90.Therefore, the yarn with low twist can spin with higher spindle speed.Then advise before the roller 33 of Fig. 1, settling a condensers 36 for the spinning of staple fibre, can make the yarn that is spun into have higher-strength and higher uniformity thus.

Fig. 2 has represented the critical piece of the fine spining machine among Fig. 1, and this figure observes from the longitudinal direction of fine spining machine.Fine spining machine 1 is supporting the creel 4 that the yarn feeding part is housed by the frame on the leg 12 10.In this example, the rove 5 that is wound on the roving bobbin 3 is stretched by drafting system 30.The top of drafting system 30 includes so-called charger 34, has top roller 32a according to this device of Fig. 1, and 33a, these rollers are pressed to the

bottom roller

32,33 below them.In the drafting system scope, rove 5 preferably has an angle beta=30 with respect to vertical line ... 50 ° and be directed, its vertical line means the axis 21 of spindle 22.Below drafting system 30, for each spinning unit is provided with an air intake duct 62, this air intake duct 62 is incorporated into a passage 64.The device 20 that is used to twist and reels comprises that (according to Fig. 2,3) has the ring rail 28 of supporting member 28a, and the spindle 22 that has bobbin 24, and wherein, spindle is installed on the step rail 23.This step rail is fixed on the support 25 on the frame 10 swingably.According to Fig. 2, realize oscillating motions by the mobile device 27 that a cylinder that has a piston rod is formed, wherein an end of mobile device is connected on the frame 10, and the other end is hinged on the step rail 23.Be to drive spindle 22, a common spindle-driving 26 of being made up of belt pulley 261, belt 262 and regulating wheel 263 can be set.Belt 262 is round the lower end near the spindle 22 of step rail 23 tops.Regulating wheel 263 is by a spring and by pre-tensioning and keep tension on belt.When making step rail 23 swings by mobile device 27, regulating wheel 263 compensates moving of belts 262.Consider the bobbin 23 that will unload winding from spindle 22, step rail 23 can be swung, this is because otherwise the distance of 30 of the top edge of bobbin 24 and drafting systems is understood too little.After step rail 23 swings, spindle 22 overlaps with axis 21a, and doff device 50 can work.This doff device consists essentially of some arms that can swing 56, and these arms are installed along frame, and the holder 54 of bobbin 24 is installed in the end of arm.By swinging lifting device and teeters around bearing 52, the bobbin 24 of winding can be to dropping on the transport 40.This transport comprises a guide rail 42 that has some peg seats 44, and these peg seats are moved by a transport 46 on fine spining machine 1 longitudinal direction.By transport 40, some empty tubes 24 are brought to below the spindle 22, and the bobbin of winding is removed.Because ring rail 28 moves along ingot axis 21, so a guide member or guide rod 232 need be installed on the supporting member 231, this supporting member is connected with step rail 23.Can on same guide rod 232, move an air ring limit collar 29 equally by supporting member 29a.Upper extent coiling yarn 6 at the wrapping range B of bobbin 24 is very favorable like this.Supporting member 28a and supporting member 29a constitute by this way, if spinning occurs in the upper extent of wrapping range B, supporting member 29a is raised by supporting member 28a.In winding process, the drive unit 233 that has draw-gear 234 promotes ring rail 28 by intermittence stepping motion method follow procedure.In order to keep the constant-tension of yarn, especially the constant-tension of wrapping range B upper extent yarn advises improving spindle speed, and this is that this is applicable to the situation of spindle stably because ballooning of yarn becomes more and more littler at this spinning process in the stage.

Replace design and be illustrated among Fig. 3 for one of Fig. 2.The supporting member 28a of ring rail 28 and the supporting member 29a of air ring limit collar 29 are bearing on the frame 10 of fine spining machine 1 regularly.Relative motion between spindle 22 and the ring rail 28 is to realize that by a mobile device 27 among Fig. 3 this mobile device 27 has a rotating shaft 271 and a pair of worm gear as shown in the figure, and wherein worm gear is installed on the main shaft 272 of a positioned vertical.Main shaft 272 has screw thread, and the lining 273 on this main shaft makes the spindle-driving 26 vertical mobile (see figure 3)s that have spindle 22.Mobile device 27 and main shaft 272 (as shown in Figure 3) are fixedly secured on the frame 10.According to the embodiment of Fig. 3, a single motor or a tangential belt suits for spindle-driving 26 for example is equipped with.If ring rail 23 moves on drafting system 30 maximum distance position from yarning position, a common doff device 50 shown in Figure 2 then can be set, so that the bobbin 24 of winding is unloaded from spindle 22.Fine spining machine of the present invention also has less relatively ballooning of yarn and the advantage of the spinning stability preferably that produced thus except above-mentioned textile technology advantage, have the advantage of higher productivity ratio and low structure height in addition.According to the pattern of embodiment, above-mentioned advantage proof is rational for additional required lifting device 27 used surcharges.

Because near the element of step rail 23 swing of bearing 25 has influenced, as drive unit 233 or spindle-driving 26, therefore, drive unit 233 preferably is arranged on the bearing 25 as far as possible, and near belt 262.Should strive for reaching the following minimum range among Fig. 2 a: horizontal range bearing 25/ drive unit 233a≤50mm especially is 30mm vertical range bearing 25/ belt 262b≤50mm, especially is 30mm.In addition, bearing 25 should be settled by as close as possible spindle 22.

Claims

1. fine spining machine, the device (20) that it has twisting and reels, a spindle (22) and one have some rollers (32,33) drafting system (30), it is characterized in that, spindle (22) is arranged on below the outlet side roller (33) of drafting system (30), make spindle (22) axis (21) apart from the roller (33) of spindle 22 horizontally sets on tangent line (T) 3mm of being to the maximum distance is arranged, wherein, tangent line (T) is parallel with axis (21), wrapping range (B) on the spindle (22) reaches a minimum range H＞50-70mm apart from roller (33) the one opposed bites (p) that compress between the roller (32a) like this, and do not have to install the thread-carrier on the air ring summit of determining yarn (6) between device (20) and drafting system (30), the angle β between the fibre stream in axis (21) and the drafting system is between 30 °-50 °.

2. fine spining machine according to claim 1 is characterized in that, device (20) is provided with a rings (281), and this rings is provided with a steel traveler (283) on ring rail (28).

3. fine spining machine according to claim 2 is characterized in that, rings (28) is fixed, and spindle (22) can move along axis direction in winding process.

4. fine spining machine according to claim 2 is characterized in that, spindle (22) is fixed, and rings (28) can move along the direction of the axis (21) of spindle (22) in winding process.

5. fine spining machine according to claim 4 is characterized in that, spindle (22) is bearing on the step rail (23), and this step rail is bearing in the frame of fine spining machine (10) swing relatively on the bearing (25), and rings (28) also can be swung with step rail (23).

6. fine spining machine according to claim 3 is characterized in that, for step rail (23) is provided with a mobile device (27), it has one and is used for step rail (23) along the mobile guiding piece (270) of the frame (10) of fine spining machine.

7. be used to operate method according to the fine spining machine of one of claim 3 to 6, it is characterized in that, during spindle (22) coiling yarn, rings (28) is maintained fixed, and spindle (22) is moved around on axis direction, and in doff process subsequently, spindle (22) is by mobile device (27; Fig. 3) remove from drafting system (30) in the axial direction.

8. fine spining machine according to claim 5 is characterized by following size:

Horizontal range

Bearing 25/ drive unit 233

A≤50mm, especially 30mm

Vertical range

Bearing 25/ belt 262

B≤50mm, especially 30mm.