CN103451785A - Drafting device in spinning frame - Google Patents
Drafting device in spinning frame Download PDFInfo
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- CN103451785A CN103451785A CN2013103816816A CN201310381681A CN103451785A CN 103451785 A CN103451785 A CN 103451785A CN 2013103816816 A CN2013103816816 A CN 2013103816816A CN 201310381681 A CN201310381681 A CN 201310381681A CN 103451785 A CN103451785 A CN 103451785A
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- Prior art keywords
- roller
- negative tube
- jaw
- gather
- mouthful
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/86—Aprons; Apron supports; Apron tensioning arrangements
- D01H5/88—Cradles; Tensors
Abstract
The invention relates to a drafting device in a spinning frame. The drafting device comprises a front roller, a front leather roller, a middle roller and a middle leather roller, wherein a front jaw is formed between the front leather roller and the front roller; a middle jaw is formed between the middle leather roller and the middle roller; a negative pressure pipe is arranged between the front roller and the middle roller; the middle part of the upper surface of the negative pressure pipe is provided with a groove; the upper surface of the negative pressure pipe is provided with front and reverse collection ports; a tensioning device is arranged below the middle roller and the negative pressure pipe; a flexible ferrule which is made of a breathable material bypasses the upper surfaces of the middle roller and the negative pressure pipe and the tensioning device and fully covers the openings of the front and rear collection ports; an upper pin is arranged above a connecting line of the front jaw and the middle jaw and positioned between the front leather roller and the middle leather roller; the lower surface of the upper pin is provided with a cambered boss; an end part, which extends downwards, of the cambered boss is butted against the flexible ferrule at the groove on the upper surface of the negative pressure pipe. The drafting device is suitable for the spinning frame and is mainly used for orderly and uniformly arranging fibers.
Description
Technical field
The invention belongs to field of textile machinery, relate to a kind of fine spining machine, relate in particular to a kind of drafting system of fine spining machine.
Background technology
In spinning process, fine spining machine through operations such as unwinding, feeding, drawing-off, twist and coilings, is made spun yarn by the rove bar.Wherein, the drafting system of fine spining machine has played vital effect to speed and the quality of spinning.
Drafting system in conventional spinning frame mainly comprises: frame, be arranged on the some roller stands on frame, roller stand arranges three row as required usually, is respectively front roller seat, middle roller seat and back roller base, and the roller stand homogeneous word in every row arranges and is uniformly distributed; Simultaneously, front roller seat, middle roller seat and the back roller base in each row roller stand is mutually corresponding and be positioned at same plane respectively; Front roller, middle roller and rear roller are separately positioned on front roller seat, middle roller seat and back roller base, and the central axis of front roller, middle roller and rear roller is parallel mutually; Be respectively arranged with front leather roller, medium rubber roller and rear roller on front roller, middle roller and rear roller, the central axis of front leather roller, medium rubber roller and rear roller is parallel to each other, and is separately positioned on reel cage, and reel cage is arranged on the frame of fine spining machine; When reel cage is upwards opened, the front leather roller, medium rubber roller and the rear roller that are arranged on reel cage break away from front roller, middle roller and rear roller respectively; After reel cage is pushed down downwards and is locked, the front leather roller, medium rubber roller and the rear roller that are arranged on reel cage are tightly pushed down with front roller, middle roller and rear roller respectively, because all there is certain elasticity on the surface of front leather roller, medium rubber roller and rear roller, therefore, when reel cage is pressed on roller by pressurization by roller, jaw before forming between front roller and front leather roller, jaw in forming between middle roller and medium rubber roller, jaw after forming between rear roller and rear roller; Generally, be provided with front roller, middle roller and the rear roller of six joints with steel tank between the two adjacent groups roller stand, six joints of answering in contrast are provided with three cover reel cages on rollers, are respectively arranged with roller after two front leather rollers, two medium rubber rollers and two on every cover reel cage; Between rear jaw and middle jaw, form the preliminary draft district of fine spining machine, and, between middle jaw and front jaw, formed the main drawing area of fine spining machine, the draw ratio of main drawing area will obviously be greater than the draw ratio in preliminary draft district.Above-mentioned fine spining machine preliminary draft district belongs to traditional back zone parallel drafting.
Drafting system in this fine spining machine is when work, the rove yarn is introduced into the preliminary draft district of fine spining machine, jaw after by feed mechanism, the rove yarn being fed, the rove yarn is gripped by rear roller and rear roller, along with the rotation of rear roller drive after roller rotate together, the rove yarn is fed to middle jaw again and is gripped by middle roller and medium rubber roller, because the rotating speed of middle roller is larger than the rotating speed of rear roller, like this, the rove yarn just can be realized preliminary draft and untwisting between rear jaw and middle jaw; Subsequently, by the rove yarn of preliminary draft, sent through middle roller and medium rubber roller again, just enter the main drawing area of fine spining machine.The speed ratio drafted due to yarn in the main drawing area of fine spining machine is very large, it is the rotating speed that the rotating speed of front roller obviously is greater than middle roller, if the rove yarn can not get effective control at main drawing area, may have a strong impact on the dry uniformity of bar, cause the generation of spun yarn thickness joint and increasing of broken end.For this reason, existing fine spining machine main drawing area adopts the double belt drafting form mostly, one downside pin is set between middle roller and front roller, the below of middle roller and downside pin arranges a tension bracket, and lower apron is walked around middle roller and downside pin, then by tensioner by lower apron tensioning, corresponding with the lower apron on downside pin, pin on one is set in the side of the forward roller of medium rubber roller, in the outside of upper pin and medium rubber roller, is wound with a upper leather ring, the working face of upper leather ring and lower apron fits tightly, in drafting process, middle roller rotates and drives lower apron rotation, lower apron drives upper leather ring again and rotates together with medium rubber roller, the rotation of pursuing middle roller and medium rubber roller when the rove yarn enters between lower apron and upper leather ring, the rove yarn is just effectively controlled by upper leather ring and lower apron, and to the front roller direction, moved together with the upper leather ring drive by lower apron, finally, the rove yarn is exported between upper leather ring and apron, entering front jaw is gripped by front roller and front leather roller, in this dominant draft process, drafted rove yarn is due to the effective control that has obtained upper leather ring and lower apron, fiber in the rove yarn can not scatter, and the speed change point of rove yarn when drawing-off also moved forward, thereby can more effectively improve the bar evenness of spun yarn, and can control the spun yarn slubbing in relative efficiency ground, the generation of details or broken end.
But, still there are a lot of shortcomings in drafting system in existing this fine spining machine: owing to adopting above-mentioned double belt drafting form in the main drawing area of this drafting system, the rove yarn is difficult for realizing further untwisting in main drawing area, two rubber ring structures are stronger to the control of rove yarn, easily cause the fracture of the fiber in the rove yarn when drawing-off, thereby affect the intensity of spun yarn; And, being provided with double belt drafting in main drawing area due to fine spining machine controls, the rove yarn is rendered as first tight rear pine in drafting process, the inhomogeneities that easily causes fiber to move, simultaneously, in the staple fibre drafting process, because the linear velocity of upper and lower apron there are differences, the mutual accumulation that therefore also easily produces staple fibre, the fiber hook increases, thereby cause thick, the thin knot of spun yarn to increase, reduce bar evenness; In addition, because the rove yarn easily broadens under the compression of upper and lower apron, easily cause front twisting three angular breadth large, cause the filoplume of yarn to increase, affect the spun yarn quality.
Summary of the invention
First technical problem to be solved by this invention is: provide a kind of mode combined by negative-pressure adsorption and elastic held to control effectively to the rove yarn in main drawing area, thereby make the fiber in the rove yarn can be by drafted equably in drafting process, and can reduce the generation of fibrous fracture, fiber hook, significantly improve the drafting system in the fine spining machine of Yarn evenness.
For addressing the above problem, the technical solution used in the present invention is: the drafting system in fine spining machine, comprise the front roller and the middle roller that are positioned at the fine spining machine main drawing area, the central axis of front roller and middle roller is parallel to each other, front leather roller is arranged on front roller, the central axis of front leather roller and front roller is parallel to each other, form a front jaw between front leather roller and front roller, medium rubber roller is arranged on middle roller, the central axis of medium rubber roller and middle roller is parallel to each other, form jaw between medium rubber roller and middle roller, be provided with the negative tube of a hollow tubular structure between described front roller and middle roller, the upper surface both sides of negative tube respectively with front jaw, middle jaw is close, negative tube inner chamber and negative pressure source are connected, near offer on the negative tube upper surface of front jaw one side with the negative tube inner chamber, communicate before gather mouth, near offer on the negative tube upper surface of middle jaw one side with the negative tube inner chamber, communicate after gather mouth, before gather mouthful and after gather the line of centres and the front roller between mouth, the axis of middle roller is mutually vertical, medium position at the negative tube upper surface, before gather mouthful and after gather between mouth and be provided with a groove, the trend of this groove and front roller, the central axis of middle roller is parallel to each other, the below of middle roller and negative tube is provided with tensioner, the flexible lasso of being made by gas permeable material is walked around middle roller, the upper surface of negative tube and tensioner, and gather mouth before on the negative tube upper surface, after the opening that gathers mouthful all cover, be provided with pin between front leather roller and medium rubber roller, the bottom of upper pin is provided with a smooth cambered surface boss, the trend of cambered surface boss and the corresponding cooperation of the groove of negative tube upper surface, and the flexible lasso of the bottom of cambered surface boss and the negative tube upper surface groove pressure that offsets.
The preliminary draft district of fine spining machine also is set in an other side of described main drawing area middle roller, and this preliminary draft district adopts traditional back zone parallel drafting, single V-arrangement back area draft, two V-arrangement back area draft or two apron back area draft.
Second technical problem to be solved by this invention is: provide the foreign material such as a kind of staple fibre that can avoid dispersing, short flannel to enter main drawing area and be bonded at rove yarn surface, and can prevent the disturbance of outer gas stream to drafted rove yarn, thereby the drafting system in the fine spining machine that minimizing spun yarn cotton knot and broken end produce.
For addressing the above problem, the technical solution used in the present invention is: the trailing flank of described upper pin cambered surface boss to the medium rubber roller direction naturally extend until negative tube after gather mouthful top, rear lateral portion at upper pin forms a rear arc bottom surface thus, progressively extends backward with respect to the upper surface of negative tube is separated in this rear arc bottom surface.
The leading flank of described upper pin cambered surface boss to the front leather roller direction naturally extend until negative tube before gather mouthful top, the front side portion at upper pin forms a front arc bottom surface thus, progressively extend forward with respect to the upper surface of negative tube is separated in this front arc bottom surface.
The 3rd technical problem to be solved by this invention is: a kind of Fiber Velocity point reach can make the drawing-off of rove yarn the time is provided, and can more effectively controls the rove yarn, further improve the drafting system in the fine spining machine of Yarn evenness.
For addressing the above problem, the technical solution used in the present invention is: after gathering the top of mouth before the front arc bottom surface of described upper pin front side portion extends to naturally, along with this lower arcuate surface continues naturally to extend forward, this front arc bottom surface is with respect to the upper surface of negative tube the state that progressively approaches, and extend between the leading edge of front jaw and negative tube always, now, form an arc plush copper at the upper pin leading section near front jaw place.
The 4th technical problem to be solved by this invention is: provide a kind of and can make front twisting triangle narrowed width, the filoplume that reduces yarn produces, and further improves the drafting system in the fine spining machine of yarn qualities.
For addressing the above problem, the technical solution used in the present invention: before described negative tube, gather mouthful and after gather mouth, they are entrance in the side near middle jaw, be outlet in the side near front jaw, before gather mouthful and after the import gathered mouthful all be greater than outlet, and after the narrowest place that gathers before being greater than mouthful, the narrowest place that gathers mouthful.
Before described, gather mouthful and after the shape gathered mouthful adopt tubaeform, equilateral triangle or isosceles trapezoid.
The invention has the beneficial effects as follows: the drafting system in above-mentioned fine spining machine, because the mode that has adopted negative-pressure adsorption and elastic held to combine in main drawing area is controlled the rove yarn, therefore, in the main drawing area of fine spining machine, can carry out further untwisting to the rove yarn, thereby reduced the filament crack conditions in drafting process, improved the intensity of spun yarn; In the drawing of fiber process, the long and short fiber in the rove yarn all can obtain effective and reasonable control, thereby can guarantee that fibre bundle obtains drawing-off equably, and the bar evenness of spun yarn obviously improves; By the forward and backward setting of gathering mouth, effectively solved the problem that the rove yarn broadens, when rove yarn the past, jaw was exported, its twist triangle zone obviously narrows down, thereby improved the cohesive force of resultant yarn, improve intensity and the surface smoothness of yarn, greatly improved the technical indicators such as the filoplume of yarn, thick knot, thin knot, cotton knot.In addition, it can avoid outside foreign material to enter in main drawing area, avoids outer gas stream to impact the rove yarn in main drawing area, reduces the cotton knot quantity of spun yarn, improves the bar evenness of spun yarn.And it can make the reach of speed change point, thereby can more effectively control the rove yarn, improves yarn qualities.
The accompanying drawing explanation
Fig. 1 is main TV structure figure of the present invention;
Fig. 2 is the left TV structure schematic diagram of Fig. 1;
Fig. 3 is schematic diagram of the present invention;
Fig. 4 is the structural representation of negative tube in Fig. 1;
Fig. 5 is the plan structure schematic diagram of Fig. 4;
Fig. 6 is the structural representation of upper pin in Fig. 3;
Fig. 7 is the structural representation during for the situation of V-type drawing-off between rear roller and rear roller;
Fig. 8 is the structural representation while between rear roller and rear roller, being the rear portion double belt drafting;
Fig. 9 is the structural representation of seal plug;
Figure 10 is the left TV structure schematic diagram of Fig. 9;
Figure 11 is the another kind of structural representation of upper pin;
In figure: 1, front roller, 2, front leather roller, 3, middle roller, 4, medium rubber roller, 5, rear roller, 6, rear roller, 7, negative tube, 8, upper pin, 9, before gather mouth, 10, after gather mouth, 11, groove, 12, flexible lasso, 13, tensioner, 14, seal plug, 141, bayonet lock, 15, draw-in groove, 16, the cambered surface boss, 17, pressure roller, 18, the plush copper of arc, 19, front jaw, 20, middle jaw, 21, rear jaw, 22, the rear arc bottom surface, 23, the front arc bottom surface, 24, frame, 25, reel cage, 26, the front roller seat, 27, the middle roller seat, 28, back roller base, 29, downside pin, 30, tension bracket, 31, lower apron, 32, upper leather ring.
The specific embodiment
Below by specific embodiment, the drafting system in fine spining machine of the present invention is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, drafting system in fine spining machine, comprise and the frame 24 of fine spining machine be arranged on three row roller stands on frame 24, be respectively front roller seat 26, middle roller seat 27 and back roller base 28, the roller stand homogeneous word in every row arranges and is uniformly distributed; Simultaneously, front roller seat 26, middle roller seat 27 and the back roller base 28 in each row roller stand is mutually corresponding and be positioned at same plane respectively; Be respectively arranged with front roller 1, middle roller 3 and rear roller 5 on front roller seat 26, middle roller seat 27 and back roller base 28, and the central axis of front roller 1, middle roller 3 and rear roller 5 is parallel mutually; Be respectively arranged with front leather roller 2, medium rubber roller 4 and rear roller 6 on front roller 1, middle roller 3 and rear roller 5, the central axis of front leather roller 2, medium rubber roller 4 and rear roller 6 is parallel to each other, and be separately positioned on reel cage 25, reel cage 25 is arranged on the frame 24 of fine spining machine, when reel cage 25 is upwards opened, the front leather roller 2, medium rubber roller 4 and the rear roller 6 that are arranged on reel cage 25 break away from front roller 1, middle roller 3 and rear roller 5 respectively; After reel cage 25 is pushed down downwards and is locked, the front leather roller 2, medium rubber roller 4 and the rear roller 6 that are arranged on reel cage 25 are tightly pushed down with front roller 1, middle roller 3 and rear roller 5 respectively, because all there is certain elasticity on the surface of front leather roller 2, medium rubber roller 4 and rear roller 6, therefore, form between front leather roller 2 and front roller 1 between front jaw 19, medium rubber roller 4 and a middle roller 3 and form between middle jaw 20, rear roller 6 and a rear roller 5 jaw 21 after one of formation.Wherein between front jaw 19 and middle jaw 20, form the main drawing area of fine spining machine, form the preliminary draft district of fine spining machine between middle jaw 20 and rear jaw 21.As shown in Figure 2 and Figure 3, in the present embodiment, what the preliminary draft district adopted is traditional back zone parallel drafting, its rear roller 5 is approximate in same vertical plane with the central axis of rear roller 6, form the rear jaw 21 of a level, rear jaw 21 and front jaw 19, middle jaw 20 are substantially in same plane.
Be provided with the negative tube 7 of a hollow tubular structure between front roller 1 and middle roller 3, as Fig. 4, shown in Fig. 5, the two ends of described negative tube 7 are provided with seal plug 14, realize the sealing at negative tube 7 two ends, as Fig. 9, shown in Figure 10, the outer end of seal plug 14 is provided with bayonet lock 141, be provided with draw-in groove 15 on middle roller seat 27, the bayonet lock 141 of seal plug 14 is fastened in draw-in groove 15, and the inside of negative tube 7 is connected with outside negative pressure source (not shown), the upper surface both sides of negative tube 7 respectively with front jaw 19, middle jaw 20 is close, near offer on negative tube 7 upper surfaces of front jaw 19 1 sides with negative tube 7 inner chambers, communicate before gather mouthfuls 9, near offer on negative tube 7 upper surfaces of middle jaw 20 1 sides with negative tube 7 inner chambers, communicate after gather mouthfuls 10, before gather mouthfuls 9 with after gather the line of centres and the front roller 1 between mouth 10, the axis of middle roller 3 is mutually vertical, medium position at negative tube 7 upper surfaces, before gather mouthfuls 9 with after gather between mouth 10 and be provided with a groove 11, the trend of this groove 11 and front roller 1, the central axis of middle roller 3 is parallel to each other, the shape of groove 11 can be for varied, what in the present embodiment, adopt is U-shaped groove 11, the groove 11 of other shapes, as triangle, trapezoidal, polygon, the shapes such as semicircle, all belong to protection category of the present invention.
Before described negative tube 7, gather mouthfuls 9 and after gather mouthfuls 10, they are entrance in the side near middle jaw 20, be outlet in the side near front jaw 19, the preferred version of the present embodiment is: front gather mouthfuls 9 and after gather mouthfuls 10 import and all be greater than outlet, and after gather before mouthfuls 10 the narrowest place is greater than the narrowest place that gathers mouthfuls 9.
Before described, gather mouthfuls 9 and after gather the preferably shapes such as tubaeform, equilateral triangle, isosceles trapezoid of mouthfuls 10 shape; can be also the various shapes such as strip shape, square, circular, semicircle, circular arc, ellipse; do not do concrete restriction in the present invention, all belong to protection category of the present invention.
The flexible lasso 12 of being made by gas permeable material is walked around upper surface and the tensioner 13 of middle roller 3, negative tube 7, and by gathering mouthfuls 9 before on negative tube 7 upper surfaces, after gather mouthfuls 10 opening and all cover, flexible lasso 12 is a kind of good permeability but the intransitable porous fabric circle of fiber, flexible lasso 12 can be made by conductive material, as semi-conducting material, conductive plastics, conductive rubber etc., preferably adopt antistatic material to make.
Be provided with on one and sell 8 between front leather roller 2 and medium rubber roller 4, upper pin 8 is arranged on reel cage 25, as shown in Figure 6, the middle part of upper pin 8 lower surfaces is provided with a smooth cambered surface boss 16, the trend of cambered surface boss 16 is consistent with the groove 11 of negative tube 7 upper surfaces, and the bottom of cambered surface boss 16 compresses mutually with the flexible lasso 12 at negative tube 7 upper surface groove 11 places.
As preferred version, the trailing flank of the cambered surface boss 16 of described upper pin 8 also can to medium rubber roller 4 directions naturally extend to negative tube 7 after gather mouthfuls 10 top, rear lateral portion at upper pin 8 forms a rear arc bottom surface 22 thus, progressively extends backward with respect to the upper surface of negative tube 7 is separated in this rear arc bottom surface 22.
As preferred version, the leading flank of the cambered surface boss 16 of described upper pin 8 also can to front leather roller 2 directions naturally extend to negative tube 7 before gather mouthfuls 9 top, front side portion upper Xiao 8 forms a front arc bottom surface 23 thus, progressively extend forward with respect to the upper surface of negative tube 7 is separated in this front arc bottom surface 23, now the structure of upper pin 8 as shown in figure 11.In the present embodiment, as embodiment preferably, front arc bottom surface 23 and rear arc bottom surface 22 staple fibre to avoid dispersing is set on upper Xiao 8, the foreign material such as short flannel enter main drawing area and are bonded at rove yarn surface, and can prevent the disturbance of outer gas stream to drafted rove yarn, thereby reduce spun yarn cotton knot and broken end generation, improve the bar evenness of fiber, a setting can be selected in this front arc bottom surface 23 and rear arc bottom surface 22 also can combine setting, as on upper Xiao 8, front arc bottom surface 23 is not set or/and rear arc bottom surface 22, or the change in shape of front arc bottom surface 23 and rear arc bottom surface 22 also belongs to protection category of the present invention.
Preferred scheme, as shown in Figure 6, after gathering the top of mouth 9 before the front arc bottom surface of described upper pin 8 front side portions extends to naturally, along with continuing naturally to extend forward in this front arc bottom surface 23, this front arc bottom surface 23 is with respect to the upper surface of negative tube 7 state that progressively approaches, and extend between the leading edge of front jaw 19 and negative tube 7, now, at upper pin 8 leading sections near front jaw 19 places, form an arc plush copper 18. alwaysThis arc plush copper 18 contacts with the rove yarn, forms speed change point and can make the speed change point of main drawing area move forward, thereby can more effectively control the rove yarn, improves yarn qualities.
Rear roller in described preliminary draft district and the structure between rear roller can also adopt: the multiple drawing-off modes such as single V-arrangement back area draft, two V-arrangement back area draft or two apron back area drafts; these drawing-off modes are existing drawing-off mode; main drawing area described in the present invention can carry out combination collocation with above-mentioned any preliminary draft district, all belongs to protection category of the present invention.Wherein:
Two V-arrangement back area drafts as shown in Figure 7, its rear roller 5 arranges in vertical direction at an angle with the central axis of rear roller 6, and a pressure roller 17 is set in the preliminary draft district, make yarn through after V-shaped trend during jaw 21, in V-shaped trend once more when the pressure roller 17, form double V-shaped back area draft, thereby make the drawing-off effect better.The pressure roller 17 that single V-arrangement back area draft only need be removed in Fig. 7 gets final product, and does not repeat them here.
Two apron back area drafts as shown in Figure 8, one downside pin 29 is set between middle roller 3 and rear roller 5, middle roller 3 arranges a tension bracket 30 with the below of downside pin 29, lower apron 31 is walked around rear roller 5 and downside pin 29, then by tension bracket 30 tensionings, corresponding, arrange on one and sell 8 between medium rubber roller 4 and rear roller 6, upper pin 8 and rear roller 6 outsides again around on a upper leather ring 32, strengthen the control to yarn by upper and lower apron, thereby realize the effective control to yarn.
During this drafting system work, drafted rove yarn from jaw 21, enter middle jaw 20 behind the preliminary draft district, and drive and move forward by the flexible lasso 12 on middle roller 3 and negative tube 7, the rove yarn gathers mouth 10 o'clock after arriving, due to after gather the negative pressure effect at mouthful 10 places, can collect for the first time the fiber in the rove yarn, the width that makes the rove yarn after gather mouthful 10 places and narrow, drive rove yarn by flexible lasso 12 continues to move ahead, because of the rove yarn on flexible lasso 12 surfaces, the fiber speed of service in the rove yarn that the part head has been gripped by front jaw 19 is greater than the fiber speed of service do not gripped by front jaw 19 on flexible lasso 12 certainly, when in the rove yarn, this part fiber of being controlled by front jaw 19 travels forward fast, the speed of service faster before fiber pars fibrosa that the speed of service is slower hook stretching, and the slower fiber of the speed of service by the speed of service faster after pars fibrosa hook stretching.
The bottom that enters the cambered surface boss 16 of upper pin 8 along with the rove yarn compresses place mutually with the flexible lasso 12 at negative tube 7 upper surface groove 11 places, mode by elastic held is controlled rationally and effectively to the rove yarn, because the cambered surface boss 16 of upper pin 8 is relatively smooth, the additional friction force less that the rove yarn is subject to, in the situation that the drawing-off linear velocity of front jaw 19 is larger, fiber in the rove yarn can obtain drawing-off uniformly and effectively, thereby improved the bar evenness of spun yarn, and can prevent the generation of thick knot, details.
When the rove yarn continues to move ahead before arriving while gathering mouthfuls 9, due to the negative pressure effect of front gathering mouthful 9 places, can collect for the second time the fiber in the rove yarn, the width of rove yarn is further narrowed down, the fiber interphase interaction in this drafting process with after to gather mouthful 10 places identical.And, at the drive rove yarn of flexible lasso 12 and front jaw 19, continue to move ahead, before the rove yarn arrives during jaw 19, can make the width of the yarn twist triangle zone after drawing-off narrow, greatly reduced the generation of fuzzy yarn, thick knot, thin knot, cotton knot.In addition, when the rove yarn after front gathering mouthfuls 9, setting due to the arc plush copper 18 of upper pin 8, rove yarn after drawing-off produces and contacts with the arc plush copper of upper pin 8 18, can make the speed change point reach of yarn, thereby can obtain to the fiber in main drawing area more effective control, further improve yarn qualities.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. the drafting system in fine spining machine, comprise the front roller and the middle roller that are positioned at the fine spining machine main drawing area, the central axis of front roller and middle roller is parallel to each other, front leather roller is arranged on front roller, the central axis of front leather roller and front roller is parallel to each other, and forms a front jaw between front leather roller and front roller, and medium rubber roller is arranged on middle roller, the central axis of medium rubber roller and middle roller is parallel to each other, and forms jaw between medium rubber roller and middle roller.It is characterized in that: the negative tube that is provided with a hollow tubular structure between described front roller and middle roller, the upper surface both sides of negative tube respectively with front jaw, middle jaw is close, negative tube inner chamber and negative pressure source are connected, near offer on the negative tube upper surface of front jaw one side with the negative tube inner chamber, communicate before gather mouth, near offer on the negative tube upper surface of middle jaw one side with the negative tube inner chamber, communicate after gather mouth, before gather mouthful and after gather the line of centres and the front roller between mouth, the axis of middle roller is mutually vertical, medium position at the negative tube upper surface, before gather mouthful and after gather between mouth and be provided with a groove, the trend of this groove and front roller, the central axis of middle roller is parallel to each other, the below of middle roller and negative tube is provided with tensioner, the flexible lasso of being made by gas permeable material is walked around middle roller, the upper surface of negative tube and tensioner, and gather mouth before on the negative tube upper surface, after the opening that gathers mouthful all cover, be provided with pin between front leather roller and medium rubber roller, the bottom of upper pin is provided with a smooth cambered surface boss, the trend of cambered surface boss and the corresponding cooperation of the groove of negative tube upper surface, and the flexible lasso of the bottom of cambered surface boss and the negative tube upper surface groove pressure that offsets.
2. the drafting system of a kind of fine spining machine according to claim 1, it is characterized in that: the trailing flank of described upper pin cambered surface boss to the medium rubber roller direction naturally extend until negative tube after gather mouthful top, rear lateral portion at upper pin forms a rear arc bottom surface thus, progressively extends backward with respect to the upper surface of negative tube is separated in this rear arc bottom surface.
3. the drafting system of a kind of fine spining machine according to claim 1 and 2, it is characterized in that: the leading flank of described upper pin cambered surface boss to the front leather roller direction naturally extend until negative tube before gather mouthful top, front side portion at upper pin forms a front arc bottom surface thus, progressively extends forward with respect to the upper surface of negative tube is separated in this front arc bottom surface.
4. the drafting system of a kind of fine spining machine according to claim 3, it is characterized in that: after gathering the top of mouth before the front arc bottom surface of described upper pin front side portion extends to naturally, along with continuing naturally to extend forward in this front arc bottom surface, this front arc bottom surface is with respect to the upper surface of negative tube the state that progressively approaches, and extend between the leading edge of front jaw and negative tube always, now, form an arc plush copper at the upper pin leading section near front jaw place.
5. the drafting system in a kind of fine spining machine according to claim 1 and 2, it is characterized in that: the preliminary draft district of fine spining machine also is set in an other side of described main drawing area middle roller, and this preliminary draft district adopts traditional back zone parallel drafting, single V-arrangement back area draft, two V-arrangement back area draft or two apron back area draft.
6. the drafting system of a kind of fine spining machine according to claim 1 and 2, it is characterized in that: before described negative tube, gather mouthful and after gather mouth, they are entrance in the side near middle jaw, be outlet in the side near front jaw, before gather mouthful and after the import gathered mouthful all be greater than outlet, and after the narrowest place that gathers before being greater than mouthful, the narrowest place that gathers mouthful.
7. the drafting system of a kind of fine spining machine according to claim 6 is characterized in that: before described, gather mouthful and after the shape gathered mouthful adopt tubaeform, equilateral triangle or isosceles trapezoid.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103816816A CN103451785A (en) | 2013-08-28 | 2013-08-28 | Drafting device in spinning frame |
| PCT/CN2014/078028 WO2015027723A1 (en) | 2013-08-28 | 2014-05-21 | Drafting device in spinning frame |
| JP2015533447A JP5970615B2 (en) | 2013-08-28 | 2014-05-21 | Draft device in spinning machine |
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| CN2013103816816A CN103451785A (en) | 2013-08-28 | 2013-08-28 | Drafting device in spinning frame |
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| CN103451785A true CN103451785A (en) | 2013-12-18 |
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| CN2013103816816A Pending CN103451785A (en) | 2013-08-28 | 2013-08-28 | Drafting device in spinning frame |
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| JP (1) | JP5970615B2 (en) |
| CN (1) | CN103451785A (en) |
| WO (1) | WO2015027723A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103774299A (en) * | 2014-02-24 | 2014-05-07 | 邓万胜 | Drafting system of ring spinning frame |
| WO2015027723A1 (en) * | 2013-08-28 | 2015-03-05 | 张家港广众纺机科技有限公司 | Drafting device in spinning frame |
| CN107675303A (en) * | 2017-11-09 | 2018-02-09 | 张家港广众纺机科技有限公司 | The DS curve drawing systems of spinning frame |
| CN110616479A (en) * | 2018-11-07 | 2019-12-27 | 徐时平 | Fiber strand conveying mechanism of ring spinning frame |
| CN110872734A (en) * | 2019-12-03 | 2020-03-10 | 范亚琴 | Combing machine |
| CN107675303B (en) * | 2017-11-09 | 2024-04-26 | 广研科技湖北有限公司 | DS curve drafting system of spinning frame |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004532A (en) * | 2019-04-22 | 2019-07-12 | 经纬智能纺织机械有限公司 | A kind of triple channel ring throstle three-apron formula back area draft device |
| CN110541216A (en) * | 2019-09-06 | 2019-12-06 | 华孚时尚股份有限公司 | Segment color plied yarn spinning machine, segment color plied yarn, fabric and production method thereof |
| CN116163038B (en) * | 2023-03-27 | 2023-07-25 | 无锡万诺智能科技有限公司 | Aggregation spinning device and spinning method |
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| DE102004059321A1 (en) * | 2004-12-02 | 2006-06-08 | Wilhelm Stahlecker Gmbh | Drafting system for spinning machines |
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| CN103603101A (en) * | 2013-11-27 | 2014-02-26 | 张家港广众纺机科技有限公司 | Drafting device in spinning frame |
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- 2013-08-28 CN CN2013103816816A patent/CN103451785A/en active Pending
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- 2014-05-21 WO PCT/CN2014/078028 patent/WO2015027723A1/en active Application Filing
- 2014-05-21 JP JP2015533447A patent/JP5970615B2/en active Active
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| CN101403147A (en) * | 2007-11-09 | 2009-04-08 | 潘思敏 | Novel slub |
| CN201236240Y (en) * | 2008-07-25 | 2009-05-13 | 常州市同和纺织机械制造有限公司 | Energy-saving negative pressure agglomeration tube of yarn pneumatic accumulation apparatus |
| CN201309992Y (en) * | 2008-10-06 | 2009-09-16 | 程心一 | Spinning spring |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027723A1 (en) * | 2013-08-28 | 2015-03-05 | 张家港广众纺机科技有限公司 | Drafting device in spinning frame |
| CN103774299A (en) * | 2014-02-24 | 2014-05-07 | 邓万胜 | Drafting system of ring spinning frame |
| CN103774299B (en) * | 2014-02-24 | 2016-01-06 | 邓万胜 | A kind of ring throstle drafting system |
| CN107675303A (en) * | 2017-11-09 | 2018-02-09 | 张家港广众纺机科技有限公司 | The DS curve drawing systems of spinning frame |
| CN107675303B (en) * | 2017-11-09 | 2024-04-26 | 广研科技湖北有限公司 | DS curve drafting system of spinning frame |
| CN110616479A (en) * | 2018-11-07 | 2019-12-27 | 徐时平 | Fiber strand conveying mechanism of ring spinning frame |
| CN110872734A (en) * | 2019-12-03 | 2020-03-10 | 范亚琴 | Combing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015530496A (en) | 2015-10-15 |
| WO2015027723A1 (en) | 2015-03-05 |
| JP5970615B2 (en) | 2016-08-17 |
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