CN103603101A - Drafting device in spinning frame - Google Patents
Drafting device in spinning frame Download PDFInfo
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- CN103603101A CN103603101A CN201310631289.2A CN201310631289A CN103603101A CN 103603101 A CN103603101 A CN 103603101A CN 201310631289 A CN201310631289 A CN 201310631289A CN 103603101 A CN103603101 A CN 103603101A
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Abstract
The invention relates to a drafting device in a spinning frame. The drafting device in the spinning frame comprises a front roller, a front leather roller, a middle roller and a middle leather roller. 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, and a negative pressure pipe is arranged between the front roller and the middle roller. A groove is formed in the middle of the upper surface of the negative pressure pipe, a front gathering opening and a rear gathering opening are formed in the upper surface of the negative pressure pipe, and a tension device is arranged below the middle roller and the negative pressure pipe. A flexible sleeve ring made of breathable materials bypasses the upper surface of the middle roller, the upper surface of the negative pressure pipe and the tension device and covers the opening parts of the front gathering opening and the rear gathering opening. An upper pin is arranged above the connecting line of the front jaw and the middle jaw and placed between the front leather roller and the middle leather roller. A cambered surface boss is arranged on the lower surface of the upper pin, the end portion, extending downwards, of the cambered surface boss abuts against the flexible sleeve ring on a groove in the upper surface of the negative pressure pipe. The drafting device in the spinning frame is suitable for the spinning frame, and mainly used for orderly and evenly arraying 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 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 in frame, roller stand arranges three row as required conventionally, is respectively front roller seat, middle roller seat and back roller base, and the roller stand in every row is all in one line and be uniformly distributed; Meanwhile, 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 in 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; On front roller, middle roller and rear roller, be respectively arranged with front leather roller, medium rubber 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 in 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 depart 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, between two adjacent groups roller stand, be provided with six joints with front roller, middle roller and the rear roller of steel tank, 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, rove yarn is introduced into the preliminary draft district of fine spining machine, jaw after rove yarn being fed by feed mechanism, rove yarn is gripped by rear roller and rear roller, along with the rotation of rear roller drive after roller rotate together, 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, rove yarn just can be realized preliminary draft and untwisting between rear jaw and middle jaw; Subsequently, by the rove yarn of preliminary draft, through middle roller and medium rubber roller, sent 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 is obviously greater than middle roller, if rove yarn can not get effective control in 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 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 to rotate, lower apron drives upper leather ring to rotate together with medium rubber roller again, when the rotation of rove yarn by middle roller and medium rubber roller enters between lower apron and upper leather ring, rove yarn is just effectively controlled by upper leather ring and lower apron, and to front roller direction, move together with being driven with upper leather ring by lower apron, finally, 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 owing to having obtained effective control of upper leather ring and lower apron, fiber in 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 spun yarn slubbing in relative efficiency ground, the generation of details or broken end.
But, still there are a lot of shortcomings in the 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, rove yarn is difficult for realizing further untwisting in main drawing area, two rubber ring structures are stronger to the control of rove yarn, when drawing-off, easily cause the fracture of the fiber in rove yarn, thereby affect the intensity of spun yarn; And, in main drawing area due to fine spining machine, being provided with double belt drafting controls, rove yarn is rendered as first tight rear pine in drafting process, the inhomogeneities that easily causes fiber to move, simultaneously, in 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, fiber hook increases, thereby cause thick, the thin knot of spun yarn to increase, reduce bar evenness; In addition, because 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 spun yarn quality.
Summary of the invention
First technical problem to be solved by this invention is: provide a kind of mode combining by negative-pressure adsorption and elastic held to control effectively to the rove yarn in main drawing area, thereby make the fiber in 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 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, between front leather roller and front roller, form a front jaw, medium rubber roller is arranged on middle roller, the central axis of medium rubber roller and middle roller is parallel to each other, between medium rubber roller and middle roller, form jaw in, between described front roller and middle roller, be provided with the negative tube of a hollow tubular structure, 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 communicate with negative tube inner chamber before gather mouth, near offer on the negative tube upper surface of middle jaw one side communicate with negative tube inner chamber 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 negative tube upper surface, before gather mouthful and after gather and between mouth, 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 negative tube upper surface, after the opening that gathers mouthful all cover, between front leather roller and medium rubber roller, be provided with pin on, the bottom of upper pin is provided with a smooth cambered surface boss, the corresponding cooperation of groove of the trend of cambered surface boss and 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 ，Gai preliminary draft district that fine spining machine is also set in the other side of described main drawing area middle roller 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 that reduces spun yarn cotton knot and break end in the fine spining machine producing.
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 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, and this rear arc bottom surface is with respect to the separated progressively extension backward of upper surface of negative tube.
The leading flank of described upper pin cambered surface boss to 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 time is provided, and can more effectively controls 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: before the front arc bottom surface of described upper pin front side portion extends to naturally, gather behind the top of mouth, 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 front jaw and the leading edge of negative tube always, now, at the upper pin leading section near front jaw place, form an arc plush copper.
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, in the side near front jaw, be outlet, before gather mouthful and after the import gathered mouthful be all 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 rove yarn, therefore, in the main drawing area of fine spining machine, can carry out further untwisting to rove yarn, thereby reduced the filament crack conditions in drafting process, improved the intensity of spun yarn; In drawing of fiber process, the long and short fiber in 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 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 rove yarn, improves yarn qualities.
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 being rear portion double belt drafting between rear roller and rear roller;
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, cambered surface boss, 17, pressure roller, 18, the plush copper of arc, 19, front jaw, 20, middle jaw, 21, rear jaw, 22, rear arc bottom surface, 23, front arc bottom surface, 24, frame, 25, reel cage, 26, front roller seat, 27, 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, comprises and the frame 24 of fine spining machine is arranged on three row roller stands in frame 24, be respectively front roller seat 26, middle roller seat 27 and back roller base 28, the roller stand in every row is all in one line and be uniformly distributed; Meanwhile, 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; In front roller seat 26, middle roller seat 27 and back roller base 28, be respectively arranged with front roller 1, middle roller 3 and rear roller 5, and the central axis of front roller 1, middle roller 3 and rear roller 5 is parallel mutually; On front roller 1, middle roller 3 and rear roller 5, be respectively arranged with front leather roller 2, medium rubber roller 4 and rear roller 6, 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 in 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 depart 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, between front leather roller 2 and front roller 1, form between front jaw 19, medium rubber roller 4 and a middle roller 3, form between middle jaw 20, rear roller 6 and a rear roller 5, form one after jaw 21.Wherein between front jaw 19 and middle jaw 20, form the main drawing area of fine spining machine, between middle jaw 20 and rear jaw 21, form the preliminary draft district of fine spining machine.As shown in Figure 2 and Figure 3, in the present embodiment, what 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.
Between front roller 1 and middle roller 3, be provided with the negative tube 7 of a hollow tubular structure, 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, on middle roller seat 27, be provided with draw-in groove 15, 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 communicate with negative tube 7 inner chambers before gather mouthfuls 9, near offer on negative tube 7 upper surfaces of middle jaw 20 1 sides communicate with negative tube 7 inner chambers 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, in the side near front jaw 19, be outlet, the preferred version of the present embodiment is: front gather mouthfuls 9 and after gather mouthfuls 10 import and be all greater than outlet, and after gather the narrowest place that gathers mouthfuls 9 before mouthfuls 10 the narrowest place is greater than.
Before described, gather mouthfuls 9 and after gather the preferably shape such as tubaeform, equilateral triangle, isosceles trapezoid of mouthfuls 10 shape; also can be the various shapes such as strip shape, square, circular, semicircle, circular arc, ellipse; in the present invention, do not do concrete restriction, 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.
Between front leather roller 2 and medium rubber roller 4, be provided with on one and sell 8, 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, and this rear arc bottom surface 22 is with respect to the separated progressively extension backward of upper surface of negative tube 7.
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, this front arc bottom surface 23 is with respect to the separated progressively extension forward of upper surface of negative tube 7, and 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 front arc bottom surface 23 not being set or/and rear arc bottom surface 22 on upper Xiao 8, 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, before extending to naturally, the front arc bottom surface of described upper pin 8 front side portions gathers behind the top of mouth 9, 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 front jaw 19 and the leading edge of 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 rove yarn, forms speed change point and can make the speed change point of main drawing area move forward, thereby can more effectively control 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; combination collocation can be carried out with above-mentioned any preliminary draft district in main drawing area described in the present invention, 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 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 drawing-off effect better.Single V-arrangement back area draft only need be removed the pressure roller 17 in Fig. 7, 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, between medium rubber roller 4 and rear roller 6, arrange on one and sell 8, upper pin 8 and rear roller 6 outsides again around on a upper leather ring 32, by upper and lower apron, strengthen the control to yarn, thereby realize the effective control to yarn.
During this drafting system work, drafted rove yarn is from rear jaw 21, behind preliminary draft district, enter middle jaw 20, and drive and move forward by the flexible lasso 12 on middle roller 3 and negative tube 7, 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 rove yarn, the width that makes rove yarn after gather mouthful 10 places and narrow, drive rove yarn by flexible lasso 12 continues to move ahead, because rove yarn is on flexible lasso 12 surfaces, the fiber speed of service in the rove yarn that part head has been gripped by front jaw 19 is greater than the fiber speed of service not gripped by front jaw 19 on flexible lasso 12 certainly, when in rove yarn, this part fiber of being controlled by front jaw 19 travels forward fast, the speed of service faster fiber is stretching by hook before the slower pars fibrosa of the speed of service, 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 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 rove yarn, because the cambered surface boss 16 of upper pin 8 is relatively smooth, the additional friction force that rove yarn is subject to is relatively little, in the situation that the drawing-off linear velocity of front jaw 19 is larger, fiber in 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 rove yarn continues to move ahead while gathering mouthfuls 9 before arriving, owing to front gathering the negative pressure effect at mouthful 9 places, can collect for the second time the fiber in 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, when rove yarn arrives front jaw 19, can make the width of the yarn twist triangle zone after drawing-off narrow, greatly reduced fuzzy yarn, thick knot, the carefully generation of knot, cotton knot.In addition, when rove yarn is through front gathering after mouth 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 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 communicate with negative tube inner chamber before gather mouth, near offer on the negative tube upper surface of middle jaw one side communicate with negative tube inner chamber 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 negative tube upper surface, before gather mouthful and after gather and between mouth, 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 negative tube upper surface, after the opening that gathers mouthful all cover, between front leather roller and medium rubber roller, be provided with pin on, the bottom of upper pin is provided with a smooth cambered surface boss, the corresponding cooperation of groove of the trend of cambered surface boss and 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 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, and this rear arc bottom surface is with respect to the separated progressively extension backward of upper surface of negative tube.
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 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, and this front arc bottom surface is with respect to the separated progressively extension forward of upper surface of negative tube.
4. the drafting system of a kind of fine spining machine according to claim 3, it is characterized in that: before the front arc bottom surface of described upper pin front side portion extends to naturally, gather behind the top of mouth, 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 front jaw and the leading edge of negative tube always, now, at the upper pin leading section near front jaw place, form an arc plush copper.
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 ，Gai preliminary draft district that fine spining machine is also set in the other side of described main drawing area middle roller 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, in the side near front jaw, be outlet, before gather mouthful and after the import gathered mouthful be all 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.
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| CN201310631289.2A CN103603101A (en) | 2013-11-27 | 2013-11-27 | Drafting device in spinning frame |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104195683A (en) * | 2014-08-05 | 2014-12-10 | 海宁市富利达纺织有限公司 | Negative pressure type tight siro spinning machine |
| CN104372463A (en) * | 2014-10-09 | 2015-02-25 | 张家港广众纺机科技有限公司 | Double-S-curve soft drafting device |
| 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 |
| CN113718378A (en) * | 2021-10-18 | 2021-11-30 | 徐州天虹时代纺织有限公司 | Lower round pin stick, subassembly and apron draft mechanism of induced drafting |
-
2013
- 2013-11-27 CN CN201310631289.2A patent/CN103603101A/en not_active Withdrawn
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 |
| CN104195683A (en) * | 2014-08-05 | 2014-12-10 | 海宁市富利达纺织有限公司 | Negative pressure type tight siro spinning machine |
| CN104195683B (en) * | 2014-08-05 | 2016-08-17 | 海宁市富利达纺织有限公司 | A kind of negative pressure type compact SEILE textile machine |
| CN104372463A (en) * | 2014-10-09 | 2015-02-25 | 张家港广众纺机科技有限公司 | Double-S-curve soft drafting device |
| CN104372463B (en) * | 2014-10-09 | 2017-01-11 | 张家港广众纺机科技有限公司 | Double-S-curve soft drafting device |
| CN113718378A (en) * | 2021-10-18 | 2021-11-30 | 徐州天虹时代纺织有限公司 | Lower round pin stick, subassembly and apron draft mechanism of induced drafting |
| CN113718378B (en) * | 2021-10-18 | 2024-05-14 | 徐州天虹时代纺织有限公司 | Lower pin rod, air suction assembly and apron drafting mechanism |
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Application publication date: 20140226 |