CN102560705B - Lower drawing device for spunbond nonwoven fabric spinning - Google Patents
Lower drawing device for spunbond nonwoven fabric spinning Download PDFInfo
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- CN102560705B CN102560705B CN201210008966.0A CN201210008966A CN102560705B CN 102560705 B CN102560705 B CN 102560705B CN 201210008966 A CN201210008966 A CN 201210008966A CN 102560705 B CN102560705 B CN 102560705B
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- lower steel
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Abstract
The invention relates to a lower drawing device for spunbond nonwoven fabric spinning, which has simple structure, low cost, convenient mounting, uniform air flow and stability. The lower drawing device comprises upper and lower corridors having laterally symmetrical inner side wall structure. A side steel plate constituting the upper and lower corridors comprises an upper steel plate, a lower steel plate, and a rotor shaft fixed at the edge of the lower steel plate. The lower end surface of the upper steel plate is provided with an arc surface suitable for movably matching with a cylindrical surface of the rotor shaft. The bottom of the inner side surface of the upper steel plate is suitable for being tangent with the cylindrical surface of the rotor shaft. An axially distributed notch is cut on the rotor shaft. The top end of the lower steel plate is fixed in the notch. The top of the inner side surface of the lower steel plate is tangent with the cylindrical surface of the rotor shaft. The outer side surface of the rotor shaft is provided thereon with a pillow for holding the position of the rotor shaft. The outer side end of the pillow is connected with a movable supporting rod applicable for controlling horizontal displacement of the pillow. The inside end surface of the pillow is provided with a semicircular arc groove applicable for movably matching with the outside cylindrical surface of the rotor shaft.
Description
Technical field
The present invention relates to the technical field of spinning equipment, specifically a kind of lower drawing device for spunbond nonwoven fabric spinning.
Background technology
Spun-bonded non-woven fabrics spinning and drawing process comprise that raw material section melts and extrude through screw extruder, and filter filters, and measuring pump measures and be transported to spinning manifold spinning.Long filament sprays from spinnerets, and after the cooling moulding of cooling air, cooling air moves downwards, stretcher and lower stretcher in process.Due to the design of structure, make cooling air accelerate operation downwards, with long filament, its stretching is attenuated.When wind runs to the exit of lower stretcher with long filament, wind is siphoned away by the air-suction trunk under breathable lace curtaining, and long filament is layered on lace curtaining equably.
As Fig. 1, existing spinning equipment comprises: extruder 1, for the filter 2 of melt filtration impurity, measuring pump 3 for accurate measurement melt conveying, for the manifold 4 of uniform distribution melt, be located at manifold lower end spinneret component 5, be located at air cooling equipment 6, upper stretcher 7 and the lower stretcher 8. of spinneret component 5 lower ends.
Cooling air employing in air cooling equipment 6 is from both sides to blowing the mode of fiber, and the quick cooling thick-layer fiber of energy, improves fiber quality effectively.
The entrance of upper stretcher 7 is to consist of a pair of cambered surface metallic plate symmetry.Cambered surface metallic plate bottom is the symmetrical formation of a pair of rear glass plate gallery.
Wind path in described lower cold stretch device 8 comprises upper plate 41, the lower plate 42 distributing up and down; For guaranteeing from the uniformity of the fiber lapping of lower stretcher 8 bottom outputs, the a pair of upper steel plate that forms lower stretching path must be herringbone and symmetrical, the splayed that lower steel plate 42 must be symmetric, to produce the diffusion air-flow that flow velocity is larger in described lower path.Because the angle between upper plate 41 and lower plate 42 need be adjusted at any time according to production specification, therefore require upper plate 41 and lower plate 42 separate and are suitable for relatively rotating, to adjust the angle between upper plate 41 and lower plate 42.
The scheme that prior art adopts is: the mode that adopts the upper and lower steel plate 41 and 42 of connection to be up and down formed by connecting cold wind path one side steel plate.Specifically as shown in Figure 2, after bottom margin outward one angle of described upper steel plate 41 with the superimposed overlap joint in top of lower steel plate 42, there is the serious irregular situation of medial surface in the described upper and lower steel plate 41 of this formation causing and 42 connecting portion 47, distinguished and admirable turbulent flow or the eddy current of often producing through herein time, thereby affected distinguished and admirable uniformity in this cold wind path, and then the uniformity of lapping while having affected fiber from the output of bottom, cold wind path, affected the quality of nonwoven fabric finished product.
How to provide a kind of distinguished and admirable even, stable, lower stretching device simple in structure and with low cost, is the technical problem that this area will solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of even and stable lower drawing device for spunbond nonwoven fabric spinning simple in structure, with low cost, easy for installation, distinguished and admirable.
In order to solve the problems of the technologies described above, the invention provides a kind of lower drawing device for spunbond nonwoven fabric spinning, comprising: the symmetrical upper and lower path of inner sidewall structure; A side steel plate that forms upper and lower path comprises: upper and lower steel plate and the rotating shaft of being fixed on this lower steel plate limit portion; The lower surface of upper steel plate is provided with the movable arc surface coordinating in the face of cylinder being suitable for described rotating shaft, and the medial surface bottom of this upper steel plate is suitable for the face of cylinder of described rotating shaft tangent; In described rotating shaft, cut the breach of an axial distribution, the top of described lower steel plate is fixed in this breach, and the medial surface top of this lower steel plate and the cylinder of described rotating shaft tangent; The lateral surface of described rotating shaft is provided with for keeping the tray of this rotating shaft position, and the outboard end of this tray is connected with the movable support rod that is suitable for controlling this tray left and right horizontal displacement; The inner side end of this tray is provided with the movable semicircular arc groove coordinating in the face of cylinder, outside being suitable for described rotating shaft.
Bottom outside face and the described tray of described upper steel plate are fixedly linked by contiguous block, the portion of holding that adds forming with the semicircular arc groove of the arc-shaped slot by described upper steel plate bottom and tray clamps described rotating shaft, realized the connection of upper and lower steel plate, be beneficial to described lower steel plate simultaneously and rotate in adding the portion of holding described, with conveniently adjusting angle.
The middle part of described lower steel plate and the lateral surface of bottom are provided with for adjusting the angle of inclination of described a pair of lower steel plate and the screw mandrel position-limit mechanism of symmetry, so that described a pair of lower steel plate is pressed desired spacing, angle of inclination is symmetrical.
Described movable support rod is a screw mandrel, and this screw mandrel is controlled its displacement by a screw mandrel controlling organization, to control the spacing of the junction of a pair of described upper and lower steel plate that forms both sides, described upper and lower path.
During concrete enforcement, the front and back end that forms the both sides steel plate in described upper and lower path is respectively provided with installing plate, and this left and right sides to installing plate is provided with a plurality of crin bars, and the end of each crin bar is provided with the handwheel that is arranged in described installing plate outside; Described screw mandrel position-limit mechanism and screw mandrel controlling organization coordinate with a thick screw rod transmission respectively.
The assembly method of above-mentioned lower drawing device for spunbond nonwoven fabric spinning, comprises the steps:
A, a pair of symmetrical upper steel plate is set between the installing plate of pair of parallel setting;
B, the top of lower steel plate is fixed in the breach of the axial distribution in rotating shaft, and make the medial surface top of this lower steel plate and the cylinder of described rotating shaft tangent;
C, by a pair of described rotating shaft be located at described upper steel plate lower surface be suitable for the movable arc surface coordinating in the face of cylinder of this rotating shaft, the bottom outside face of upper steel plate is fixedly connected with by contiguous block with described tray;
D, adopt on a pair of lateral surface that is provided with the countershaft described in being suitable for being located at respectively with the tray of the movable semicircular arc groove coordinating in the face of cylinder, outside of described rotating shaft at inner side end, to keep the position of this countershaft, adopt the movable support rod that is articulated with each tray outboard end to control this tray left and right horizontal displacement, to control this to the spacing on lower steel plate top and symmetry simultaneously;
E, by being located at screw mandrel position-limit mechanism on the middle part of described lower steel plate and the lateral surface of bottom, adjust described a pair of lower steel plate middle part and the angle of inclination of bottom and the integral smoothness of symmetry and described lower steel plate.
Technique scheme of the present invention has the following advantages compared to existing technology: under (1) spinning of the present invention in stretching device, the clamping part that the arc-shaped slot of upper steel plate bottom and the semicircular arc groove of tray form is suitable for clamping described rotating shaft, realized the connection of upper and lower steel plate, be beneficial to described lower steel plate rotates around described rotating shaft simultaneously, to facilitate, adjust both sides to plate slot distances and symmetry, and the angle of inclination of one-sided upper and lower plate.In addition, because the medial surface bottom of upper steel plate is tangent with the face of cylinder of rotating shaft, the medial surface top of lower steel plate and the cylinder of rotating shaft are tangent, make the medial surface of connecting portion of upper and lower steel plate more continuous, there is not rough situation, distinguished and admirable more steady through herein time, avoided the generation of turbulent flow or eddy current.(2) assembly method of stretching device under spinning of the present invention, step is simple, and debugging is convenient and man-hours requirement is less.
The specific embodiment
Embodiment 1
See Fig. 3-4, the lower drawing device for spunbond nonwoven fabric spinning of the present embodiment comprises: the symmetrical upper and lower path of inner sidewall structure; A side corrosion resistant plate that forms upper and lower path comprises: upper and lower steel plate 41,42 and be fixedly welded on the rotating shaft 43 of lower steel plate 42 limit portions.
The lower surface of upper steel plate 41 is provided with the movable arc surface coordinating in the face of cylinder being suitable for described rotating shaft 43, and the medial surface bottom of this upper steel plate 41 is suitable for the face of cylinder of described rotating shaft 43 tangent.
Described rotating shaft 43 is provided with the breach of an axial distribution, and the top of described lower steel plate 42 is weldingly fixed in this breach, and the medial surface top of this lower steel plate 42 and the cylinder of described rotating shaft 43 tangent; The lateral surface of described rotating shaft 43 is provided with for keeping the tray 44 of these rotating shaft 43 positions, and the outboard end of this tray 44 is connected with the movable support rod 45 that is suitable for controlling these tray 44 left and right horizontal displacements; The inner side end of this tray 44 is provided with the movable semicircular arc groove coordinating in the face of cylinder, outside being suitable for described rotating shaft 43.
Bottom outside face and the described tray 44 of described upper steel plate 41 are fixedly linked by contiguous block 46, the portion of holding that adds forming with the semicircular arc groove of the arc-shaped slot by described upper steel plate 41 bottoms and tray 44 clamps described rotating shaft 43, realized the connection of upper and lower steel plate, be beneficial to described lower steel plate 42 simultaneously and rotate in adding the portion of holding described, with conveniently adjusting angle.
The middle part of described lower steel plate 42 and the lateral surface of bottom are provided with for adjusting the angle of described a pair of lower steel plate 42 and the screw mandrel position-limit mechanism 11 of symmetry, to adjust a pair of described upper and lower steel plate 41 of formation both sides, described upper and lower path and 42 the formed slit in junction, reach required spacing, and meet the angle of inclination of upper and lower plate 41 and 42 and symmetrical requirement.
Described movable support rod 45 is a screw mandrel, and this screw mandrel is controlled its displacement by a screw mandrel controlling organization, to control the spacing of the junction of a pair of described upper and lower steel plate 41,42 that forms both sides, described upper and lower path.
The front and back end that forms the both sides steel plate in described upper and lower path is respectively provided with installing plate 10, and this left and right sides to installing plate 10 is provided with a plurality of crin bars, and the end of each crin bar is provided with the handwheel 9 that is arranged in described installing plate 10 outsides; Described screw mandrel position-limit mechanism 11 and screw mandrel controlling organization coordinate with a thick screw rod transmission respectively, to adjust the slit width of the left and right sides, path working face, the angle of inclination of one-sided upper and lower plate, and the symmetry of both sides working face.
Embodiment 2
Under spinning in above-described embodiment 1, the assembly method of stretching device, comprises the steps:
A, a pair of symmetrical upper steel plate 41 is set between the installing plate 10 of pair of parallel setting;
B, the top of lower steel plate 42 is weldingly fixed in the breach of the axial distribution in rotating shaft 43, and make the medial surface top of this lower steel plate 42 and the cylinder of described rotating shaft 43 tangent;
C, by a pair of described rotating shaft 43 be located at described upper steel plate 41 lower surfaces be suitable for the movable arc surface coordinating in the face of cylinder of this rotating shaft 43, the bottom outside face of upper steel plate 41 is fixedly connected with by contiguous block 46 with described tray 44;
D, adopt on a pair of lateral surface that is provided with the countershaft 43 described in being suitable for being located at respectively with the tray 44 of the movable semicircular arc groove coordinating in the face of cylinder, outside of described rotating shaft 43 at inner side end, to keep the position of this countershaft 43, adopt the movable support rod 45 that is connected in each tray 44 outboard ends to control these tray 44 left and right horizontal displacements, to control this spacing and symmetry to lower steel plate 42 tops simultaneously;
E, by being located at screw mandrel position-limit mechanism on the middle part of described lower steel plate 42 and the lateral surface of bottom 11, adjust described a pair of lower steel plate 42 middle parts and the angle of bottom and the integral smoothnesses of symmetry and described lower steel plate 42.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation.Here exhaustive without also giving all embodiments.And these belong to apparent variation that spirit of the present invention extended out or change still among protection scope of the present invention.
Accompanying drawing explanation
For content of the present invention is more likely to be clearly understood, below the specific embodiment by reference to the accompanying drawings of basis, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of stretching device under spinning of the prior art;
Fig. 2 is the structural representation of the local A in Fig. 1;
Fig. 3 is the contour structures schematic diagram of lower drawing device for spunbond nonwoven fabric spinning of the present invention;
Fig. 4 is the structural representation of the local B in Fig. 3.
Claims (2)
1. a lower drawing device for spunbond nonwoven fabric spinning, comprises the symmetrical upper and lower path of inner sidewall structure; It is characterized in that: a side steel plate that forms upper and lower path comprises: upper and lower steel plate (41,42) and be located at the rotating shaft (43) between this upper and lower steel plate (41,42);
The lower surface of upper steel plate (41) is provided with the movable arc surface coordinating in the face of cylinder being suitable for described rotating shaft (43), and the medial surface bottom of this upper steel plate (41) is suitable for the face of cylinder of described rotating shaft (43) tangent;
Described rotating shaft (43) is provided with the breach of an axial distribution, and the top of described lower steel plate (42) is fixed in this breach, and the cylinder of the medial surface top of this lower steel plate (42) and described rotating shaft (43) is tangent;
The lateral surface of described rotating shaft (43) is provided with for keeping the tray (44) of this rotating shaft (43) position, and the outboard end of this tray (44) is connected with the movable support rod (45) that is suitable for controlling this tray (44) left and right horizontal displacement;
The inner side end of this tray (44) is provided with the movable semicircular arc groove coordinating in the face of cylinder, outside being suitable for described rotating shaft (43);
The middle part of described lower steel plate (42) and the lateral surface of bottom are provided with for adjusting the angle of inclination of described lower steel plate (42) and the screw mandrel position-limit mechanism (11) of symmetry;
The front and back end that forms the both sides steel plate in described upper and lower path is respectively provided with installing plate (10), and this left and right sides to installing plate (10) is provided with a plurality of crin bars, and the end of each crin bar is provided with the handwheel (9) that is arranged in described installing plate (10) outside; Described screw mandrel position-limit mechanism (11) and screw mandrel controlling organization coordinate with a thick screw rod transmission respectively.
2. an assembly method for lower drawing device for spunbond nonwoven fabric spinning, is characterized in that comprising the steps:
Between A, the installing plate (10) that arranges in pair of parallel, a pair of symmetrical upper steel plate (41) is set;
B, the top of lower steel plate (42) is fixed in the breach of the axial distribution in rotating shaft (43), and make the medial surface top of this lower steel plate (42) and the cylinder of described rotating shaft (43) tangent;
C, by a pair of described rotating shaft (43) be located at described upper steel plate (41) lower surface be suitable for the movable arc surface coordinating in the face of cylinder of this rotating shaft (43), the bottom outside face of upper steel plate (41) is fixedly connected with by contiguous block (46) with tray (44);
D, adopt on a pair of lateral surface that is provided with the countershaft (43) described in being suitable for being located at respectively with the tray (44) of the movable semicircular arc groove coordinating in the face of cylinder, outside of described rotating shaft (43) at inner side end, to keep the position of this countershaft (43), adopt the movable support rod (45) that is connected in each tray (44) outboard end to control this tray (44) left and right horizontal displacement, to control this spacing and symmetry to lower steel plate (42) top simultaneously;
E, by being located at screw mandrel position-limit mechanism (11) on the middle part of described lower steel plate (42) and the lateral surface of bottom, adjust angle of inclination and the symmetry of described a pair of lower steel plate (42) middle part and bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210008966.0A CN102560705B (en) | 2012-01-13 | 2012-01-13 | Lower drawing device for spunbond nonwoven fabric spinning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210008966.0A CN102560705B (en) | 2012-01-13 | 2012-01-13 | Lower drawing device for spunbond nonwoven fabric spinning |
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| Publication Number | Publication Date |
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| CN102560705A CN102560705A (en) | 2012-07-11 |
| CN102560705B true CN102560705B (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210008966.0A Active CN102560705B (en) | 2012-01-13 | 2012-01-13 | Lower drawing device for spunbond nonwoven fabric spinning |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107190424A (en) * | 2016-03-15 | 2017-09-22 | 常州阿尔丰机械有限公司 | A kind of nonwoven production diffuser and its method of work |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0223734A2 (en) * | 1985-11-21 | 1987-05-27 | J. H. Benecke AG | Method for making a fleece of filaments, and apparatus for carrying out the method |
| CN87103155A (en) * | 1986-04-30 | 1987-11-18 | 纳幕尔杜邦公司 | Technology and device |
| DE4014989A1 (en) * | 1990-05-10 | 1991-11-14 | Reifenhaeuser Masch | Mfr. of spin-drawn synthetic fibre filament batt - has separate supplies for cooling air and for process fluid in drawing nozzle |
| US5814349A (en) * | 1996-05-21 | 1998-09-29 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for the continuous production of a spun-bond web |
| CN1286324A (en) * | 1999-08-26 | 2001-03-07 | 巴马格股份公司 | Method and apparatus for melt spinning of multifilament yarn |
| CN1441105A (en) * | 2002-02-28 | 2003-09-10 | 赖芬豪泽机械工厂股份有限公司 | Equipment for continuously producing adhesive non-woven fabric web |
| CN1867722A (en) * | 2003-10-27 | 2006-11-22 | 金伯利-克拉克环球有限公司 | Method and apparatus for the production of nonwoven web materials |
| CN101122065A (en) * | 2007-09-10 | 2008-02-13 | 豆丁乐园（南京）婴儿用品有限公司 | Full-degradation lactic acid polymer spun-bonded continuous yarn non-woven fabrics and preparation method thereof |
| CN201722451U (en) * | 2010-05-27 | 2011-01-26 | 东莞市威骏不织布有限公司 | Drawing and stretching device of non-woven molding equipment |
| CN202401172U (en) * | 2012-01-13 | 2012-08-29 | 常州惠明精密机械有限公司 | Spun-bond non-woven fabric spinning downward stretching device |
-
2012
- 2012-01-13 CN CN201210008966.0A patent/CN102560705B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0223734A2 (en) * | 1985-11-21 | 1987-05-27 | J. H. Benecke AG | Method for making a fleece of filaments, and apparatus for carrying out the method |
| CN87103155A (en) * | 1986-04-30 | 1987-11-18 | 纳幕尔杜邦公司 | Technology and device |
| DE4014989A1 (en) * | 1990-05-10 | 1991-11-14 | Reifenhaeuser Masch | Mfr. of spin-drawn synthetic fibre filament batt - has separate supplies for cooling air and for process fluid in drawing nozzle |
| US5814349A (en) * | 1996-05-21 | 1998-09-29 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for the continuous production of a spun-bond web |
| CN1286324A (en) * | 1999-08-26 | 2001-03-07 | 巴马格股份公司 | Method and apparatus for melt spinning of multifilament yarn |
| CN1441105A (en) * | 2002-02-28 | 2003-09-10 | 赖芬豪泽机械工厂股份有限公司 | Equipment for continuously producing adhesive non-woven fabric web |
| CN1867722A (en) * | 2003-10-27 | 2006-11-22 | 金伯利-克拉克环球有限公司 | Method and apparatus for the production of nonwoven web materials |
| CN101122065A (en) * | 2007-09-10 | 2008-02-13 | 豆丁乐园（南京）婴儿用品有限公司 | Full-degradation lactic acid polymer spun-bonded continuous yarn non-woven fabrics and preparation method thereof |
| CN201722451U (en) * | 2010-05-27 | 2011-01-26 | 东莞市威骏不织布有限公司 | Drawing and stretching device of non-woven molding equipment |
| CN202401172U (en) * | 2012-01-13 | 2012-08-29 | 常州惠明精密机械有限公司 | Spun-bond non-woven fabric spinning downward stretching device |
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