CN104726973B - Friction spinning machine screen cloth - Google Patents
Friction spinning machine screen cloth Download PDFInfo
- Publication number
- CN104726973B CN104726973B CN201510045353.8A CN201510045353A CN104726973B CN 104726973 B CN104726973 B CN 104726973B CN 201510045353 A CN201510045353 A CN 201510045353A CN 104726973 B CN104726973 B CN 104726973B
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- Prior art keywords
- tube
- hollow circular
- screen cloth
- spinning roller
- hole
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/04—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques imparting twist by contact of fibres with a running surface
- D01H4/16—Friction spinning, i.e. the running surface being provided by a pair of closely spaced friction drums, e.g. at least one suction drum
Abstract
The present invention provides a kind of friction spinning machine screen cloth, including the spinning roller turned round in the same direction for a pair, and each spinning roller includes hollow circular-tube, and hollow circular-tube outer surface is provided with stiffening layer, the hole of tube wall of the hollow circular-tube outer surface provided with insertion stiffening layer and hollow circular-tube.Compared with the friction spinning machine screen cloth that traditional handicraft is produced, the outer surface of each spinning roller has splendid hardness in screen cloth, and the production requirement of fiber can be met well.
Description
Technical field
The present invention relates to friction spinning machine technical field, more particularly to a kind of friction spinning machine screen cloth.
Background technology
The spinning of windage spinning machine is to utilize mechanical and aerodynamic Spinning Principle, and single fiber or sliver are fed
Moving screen surface is condensed upon by the fibers adsorption of shredding afterwards, is close between rotor surface and cohesion fibre bundle thereon
Row friction twisting and resultant yarn.At present, friction spun yarn has turned into one of higher speed, spinning suiting fiber and wide Yarn spinning method.Wherein,
As the screen cloth of one of the most crucial part of windage spinning machine, under the driving of the quick renewal of spinning products, length there has also been
The development of foot.Screen cloth includes two spinning rollers, and spinning roller is a Circular Thin metalloid part, is on windage spinning machine
For the vital part of spinning, spinning roller rotating speed may be up to 2000-4500r/min due to windage spinning machine operationally,
So the dimensional accuracy and dynamic balancing to part have strict requirements；Spinning roller operationally, is spinned by rubbing,
So piece surface is wear-resisting；Simultaneously as rotating speed is very high, part material will also keep certain toughness.There is size during work
There is difficulty, the ten hundreds of apertures especially processed on spinning roller in the requirement of precision, dynamically balanced requirement, processing.Passing
In the method for system processing spinning roller surface aperture, mostly using methods such as machine drilling, punchings.But use tradition machinery to bore
The methods such as hole, punching manufacture spinning roller, the problem of having manufacturing time length and inefficiency.Meanwhile, bored using tradition machinery
The spinning roller that the methods such as hole, punching are manufactured is when producing harder material, and such as glass fibre can be due to spinning roller outer surface
Hardness is low, and then causes screen cloth service life short.
The content of the invention
The brief overview on the present invention is given below, to provide the basic reason on certain aspects of the invention
Solution.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the key of the present invention
Or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form, with
This is used as the preamble in greater detail discussed later.
It is an object of the invention to provide a kind of friction spinning machine screen cloth.
The present invention provides a kind of friction spinning machine screen cloth, including the spinning roller turned round in the same direction for a pair, each spinning roller bag
Hollow circular-tube is included, hollow circular-tube outer surface is provided with stiffening layer, and hollow circular-tube outer surface is provided with insertion stiffening layer and hollow circular-tube
Tube wall hole.
The friction spinning machine screen cloth that the present invention is provided, including the spinning roller turned round in the same direction for a pair, each spinning roller pass through
Laser boring is carried out in electroplating surface last layer stiffening layer, then in the spinning roller outer surface treated by stiffened, is ultimately formed
The hole of insertion stiffening layer and hollow circular-tube tube wall.With compared with the friction spinning machine screen cloth that traditional handicraft is made, this hair
The friction spinning machine of bright offer is had the following advantages that with screen cloth：
1st, the problem of roller surface of being spinned in conventional art preferably can not increase hardness is overcome, is solved using traditional machine
Spinning roller outer surface (working face) hardness of the methods such as tool drilling, punching manufacture is low, and not wear-resisting, the shortcomings of service life is short has
Effect ground extended service life more than 24 months from original 3-6 months, with significant effect.
2nd, production efficiency is high.Drilled with tradition machinery, the method machining small such as punching, generally requiring 70 hours to complete
The making processing of one spinning roller, manufacture processing efficiency is low, and the spinning roller working method provided using the present invention only needs to 18
Individual hour, drastically increase production efficiency.
3rd, the precision in hole is much larger than traditional spinning roller on the spinning roller in friction spinning machine screen cloth, drastically increases
The quality of spinning.
Brief description of the drawings
Below with reference to the accompanying drawings illustrate embodiments of the invention, can be more readily understood that the present invention more than and its
Its objects, features and advantages.Part in accompanying drawing is intended merely to show the principle of the present invention.In the accompanying drawings, identical or similar
Technical characteristic or part will be represented using same or similar reference.
Fig. 1 is spinning roller profile provided in an embodiment of the present invention.
Description of reference numerals：
1-flange mounting surface, 2-hole
Embodiment
Illustrate embodiments of the invention with reference to the accompanying drawings.Retouched in a kind of accompanying drawing or embodiment of the present invention
The element and feature that the element and feature stated can be shown in one or more other accompanying drawings or embodiment are combined.Should
Work as attention, for purposes of clarity, eliminated in accompanying drawing and explanation known to unrelated to the invention, those of ordinary skill in the art
Part and processing expression and description.
As shown in figure 1, the friction spinning machine screen cloth that the present invention is provided, including the spinning roller turned round in the same direction for a pair, each
Spinning roller includes hollow circular-tube, and hollow circular-tube outer surface is provided with stiffening layer, hollow circular-tube outer surface provided with insertion stiffening layer and
The hole 2 of the tube wall of hollow circular-tube.
Because friction spinning machine needs are used for producing glass fibre, glass fibre is harder, easily abrasion, so needing to increase
Plus in friction spinning machine screen cloth each spinning roller case hardness, come ensure spinning quality.In the present embodiment, spinning roller
Outer surface on electroplate last layer stiffening layer, can be used to realize the increase of the hardness of spinning roller outer surface；By stiffened processing
Spinning roller outer surface carry out laser boring, form the hole 2 of the tube wall of insertion stiffening layer and hollow circular-tube one by one on surface, just
In the flowing of spinning roller air when in use, and then realize fibers adsorption on the surface of spinning roller.The spinning provided in the present embodiment
Yarn roller is made by electroplating the technique such as stiffening layer and laser boring, hardness is significantly increased on its outer surface, simultaneously
Because laser boring is instantaneous high-temperature, the material impact of punching can be fallen, the cooling of moment is carried out afterwards, equivalent to quenching,
Further increase the hardness of product；Due to using laser boring, therefore the precision in hole 2 is significantly increased.
Preferably, stiffening layer is hard chromium layers, and the thickness of hard chromium layers is 0.04-0.05mm.
In the present embodiment, the stiffening layer formed in spinning roller outer surface is preferably hard chromium layers.Because hard chrome has matter pole
Firmly, corrosion-resistant the advantages of, the requirement of spinning roller case hardness can be met, while electroplate hard chrome technology has in the prior art
Higher development level, it is easy to operate.Further, the thickness for hard chrome being formed on the surface of hollow circular-tube is preferably 0.04-
0.05mm, if it can effectively ensure that the good dynamic balance performance plating of hollow circular-tube is thick below or above above range, then or
Person's circumferential thickness is uneven, then the dynamic balancing of part can be had undesirable effect, the serious spinning roller report for causing to ultimately form
It is useless.
Preferably, a diameter of 0.85-0.95mm in hole 2.
In the present embodiment, the diameter in hole 2 is preferably 0.85-0.95mm.Learnt through experiment, when the diameter in hole 2 is set in
When between 0.85-0.95mm, the spinning quality and operating efficiency of spinning machine reach a preferably balance.Wherein, the diameter in hole 2
The air pressure that air flow and surface when size has influence on spinning machine work on spinning roller are formed, and then have influence on the quality of spinning
With the efficiency of spinning.Further, when the diameter in hole 2 is set as 0.9mm, between the spinning quality and operating efficiency of spinning machine
Balance be optimal value.
Preferably, the outer surface of spinning roller is provided with several punching circles, and be intervally arranged hole 2, adjacent punching are enclosed in punching
Spacing is 0.4-0.5mm between circle.
In the technique for making the spinning roller that the present invention is provided, the mode of laser boring is laddering using punching circle, every
Laser boring is carried out respectively again on circle, i.e., a round 2 is laid on every circle.In the present embodiment, adjacent punching circle is given
Between spacing preferred value, spacing is equal between as adjacent punching circle, and spacing is 0.4-0.5mm, can both ensure it is final into
The spinning roller of type has preferable intensity, also better controls the density in the hole 2 of spinning roller surface, forms preferable air stream
Logical ability and surface negative pressure ability, improve follow-up spinning quality.
Preferably, spacing is 0.45mm between adjacent punching circle.
In the present embodiment, spacing is 0.45mm between further setting adjacent punching circle, as half 2, hole.Through examination
Test and learn, when spacing is 0.45mm between adjacent punching circle, the bulk strength and spinning quality of spinning roller all reach most preferably, tool
There is significant effect.
Preferably, arbitrary neighborhood hole 2 is equal with the angle that the center of circle of punching circle is formed, and angle is 1.6-1.7 degree.
In the present embodiment, equidistant hole 2, i.e. arbitrary neighborhood hole 2 and the circle of punching circle are placed with each punching circle
The angle being formed centrally is equal, further, and the angle is 1.6-1.7 degree, can so make bulk strength and the outer surface of spinning roller
Form air pressure ability and reach an optimum balance, that is, ensure that spinning roller will not cause because of the increase of the quantity of hole 2 overall strong
Degree is significantly reduced, while the air bleed capability of spinning roller surface is also assures that, so that the spinning quality of spinning roller is significantly carried
Rise.
Preferably, hollow circular-tube one end outer surface is provided with flange mounting surface 1.
In this embodiment, it is preferred that one end of hollow circular-tube is provided with into flange mounting surface 1, it is easy to carry out on hollow circular-tube
Punching, while the spinning roller for also allowing for ultimately forming is arranged on spinning machine.
Preferably, hollow circular-tube is No. 20 seamless steel pipes.
In the present embodiment, the material of hollow circular-tube is preferably No. 20 seamless steel pipes.Compared with the steel such as 35# or 45#, by
There is good intensity in No. 20 seamless steel pipes, the requirement for meeting spinning roller that can be fabulous, simultaneously because seamless steel pipe, tool
Have the advantages that material is fewer than more uniform, allowance, part good dynamic balance, the property of finished product spinning roller can be considerably improved
Can, extend the service life of spinning roller.In the art, No. 20 above-mentioned nothings can be not limited to as spinning roller raw material
Stitch steel pipe, as long as can reach No. 20 seamless steel pipe performances material can also as the raw material for preparing spinning roller, therefore also
In the protection domain of invention.
Preferably, at intervals of 0.1-0.4mm between two spinning rollers.
In the present embodiment, friction spinning machine between two spinning rollers in screen cloth with being preferably spaced 0.1-0.4mm.Two spin
Spacing between yarn roller directly influences spinning roller surface and internal negative pressure value.Learnt through inventor's test of many times, when two
When between spinning roller at intervals of 0.1-0.4mm, the negative pressure value of surface and inside can be effectively utilized, while can also meet general fibre
The size requirement of dimension weaving.
The spinning roller that the deep description present invention is provided is done with reference to the processing technology of spinning roller.
The processing method for the spinning roller that the present invention is provided, including：Stiffening layer is electroplated on the outer surface of hollow circular-tube；In electricity
Laser boring is carried out on hollow circular-tube outer surface after plating stiffening layer；The tube wall of the insertion stiffening layer of hole 2 and hollow circular-tube.
Because the spinning machine provided with spinning roller needs to be used for producing glass fibre, glass fibre is harder, easily abrasion, institute
To need the case hardness for increasing spinning roller, but tens thousand of holes 2 of arranging are needed in spinning roller surface, and the diameter in hole 2 all exists
Grade, difficulty of processing is very big.Importantly, when increasing spinning roller case hardness, if first carried out in spinning roller surface
The processing of stiffened degree, can cause the increase of spinning roller case hardness, be easily caused and beat during using the mechanical punching in traditional handicraft, drilling
Hole fails, and damages hollow circular-tube；If first punched, chromium knurl can be produced when electroplating hard chrome, causes hollow circular-tube to scrap.In this reality
Apply in example there is provided one kind spinning roller working method, efficiently solve the long-term insurmountable problem of prior art in this area,
The hardness of spinning roller surface is added, the service life of spinning roller is significantly extended, reduces production cost.Wherein, in sky
Electroplate in stiffening layer step, the external cylindrical surface of part need only be electroplated on the outer surface of heart pipe, and spinning roller is other
Face will tightly be protected, prevent it from being coated with stiffening layer, and otherwise easily caused spinning roller is scrapped.After plating stiffening layer
Laser boring is carried out on hollow circular-tube outer surface, here the tube wall of the insertion stiffening layer of hole 2 and hollow circular-tube, air when being easy to operation
Circulation.Meanwhile, laser boring is instantaneous high-temperature, the material impact of punching can be fallen, and the cooling of moment is carried out afterwards, quite
In quenching, the hardness of product can be greatly increased, the performance of product is improved.
Preferably, electroplating time is 2-3 hours.
In the present embodiment, electroplating time is preferably between 2-3 hours, to ensure the thickness and uniformity of hard chromium.
If the thick overproof or circumferential thickness of plating is uneven, the dynamic balancing to part has undesirable effect, and then causes spinning roller to exist
Abrasion is also easy to produce during running, it is serious to cause to scrap.
Preferably, before the step of stiffening layer is electroplated on the outer surface of hollow circular-tube, in addition to hollow circular-tube is carried out
Pretreatment, be specially：
Lathe roughing will be carried out for the raw material for preparing spinning roller, complete 90-95% allowance；Car will be passed through
The rough machined raw material of bed are made annealing treatment；Raw material by annealing are subjected to lathe finishing, completed remaining
Allowance；The raw material finished by lathe are placed in dynamic balancer, dynamic balancing is corrected, are formed hollow
Pipe.
In the present embodiment, the pretreating process of hollow circular-tube is further illustrated, it includes：
Lathe roughing will be carried out for preparing the raw material of spinning roller, car falls most of blank allowance, completes 90-95%
Allowance.It will be made annealing treatment by the rough machined raw material of lathe, and be anti-because the allowance of blank is than larger
Only deformed in process, so to anneal, while may further be used to eliminate the internal stress produced by finishing.Will be by annealing
The raw material of processing carry out lathe finishing, remaining allowance are completed, to ensure element precision.Correct dynamic balancing, i.e., it is sharp
Correction dynamic balancing is realized with dynamic balancer, it is to avoid raw material cause following process good due to there is dynamically balanced problem
Finished product is changed into substandard products, causes unnecessary waste.
Preferably, laser boring is carried out on the hollow circular-tube outer surface after plating stiffening layer, is specially：Will be by plating
Hollow circular-tube after stiffening layer is placed in dynamic balancer, is corrected dynamic balancing；Flange mounting surface 1 is fixed on three axles
On the self-centering chuck for the servo-drive system that links, the other end keeps hanging；Opened according to preset program from the hanging one end of hollow circular-tube
Begin to carry out laser boring.
Further, preset program includes：
Step a：Hollow pipe is carried out a laser boring within each rest periods, is formed diameter using equivalent interruption rotation
For 0.85-0.95mm hole 2, until stopping after completing punching in one week, using the axis of spinning roller as reference, 1.6- is rotated every time
1.7 degree；
Step b：Spinning roller is rotated into 0.8-0.85 degree, traverse feed 0.45mm, repeat step a；
Step c：Repeat step b, until spinning roller completes all punching work.
In the present embodiment, the mode of operation of laser boring is show in particular, wherein dynamic balance calibration is carried out, can be effectively
Ensure that hollow circular-tube has good dynamic balance；Laser drilling device is preferred to use three-shaft linkage servo-drive system, can be fine
Ground meets the three-dimensional motion of laser boring of the present invention；Flange mounting surface 1 is fixed on to the self-centering card of three-shaft linkage servo-drive system
On disk, the other end keeps hanging；Correction is needed before hollow circular-tube locking, it is ensured that the angle head cylindrical cylinder that part rotates a circle radially is jumped
Move within ± 0.03mm；The processing sequence in hole 2 is that since that hanging one end, one encloses the land punching, between two adjacent rings
At intervals of 0.45mm, that is, differ half of 2, hole.There is an anglec of rotation between two adjacent rings simultaneously, the angle is 0.8-
0.85 degree.In the present embodiment, 5 holes 2 in any one region in hole 2 on the hollow circular-tube surface made are in plum blossom-shaped, effectively
Ground ensures the intensity on hollow circular-tube surface.And if using passing through, beaten line upon line, to finally due to error
Accumulation, last row and the distance between the first round 2 of beginning are difficult to control to, and have influence on the dynamic balancing of part, the effect of punching
Fruit is far away from the laser boring method provided in the present embodiment.
The spinning roller surface that the present invention makes has 30672 holes 2, often encloses upper equidistantly provided with 108 holes 2.
In this area, depending on the size of the spinning roller of final molding is according to specific spinning machine, the quantity of its surface holes 2 is not also limited to
In above-mentioned 30672.
Preferably, it is additionally included in spinning roller working method on the pipe outer surface after plating stiffening layer and carries out laser boring
Correction dynamic balancing before, be specially：
Hollow circular-tube by plating is placed in dynamic balancer, dynamic balancing is corrected.
Preferably, laser working medium is YAG crystal, and optical maser wavelength is 1064nm, and laser pulse repetition frequency is 20-30Hz,
Pulse width is 0.5-1.1ms, and laser setting electric current is 150-200A.
In the present embodiment, the laser working medium of selection is YAG crystal, and optical maser wavelength is 1064nm, and laser pulse repeats frequency
Rate is 20~30Hz, and pulse width is 0.5~1.1ms, and laser setting electric current is 150~200A, and auxiliary gas is by purifying
Compressed air.Preferential above-mentioned parameter, is the key of this part laser boring technique.Learn that the parameter of laser is set through experiment
It is fixed within the above range when, can accurately, it is efficiently low complete punching work, improve the precision of spinning roller, and then improve spinning
The quality of yarn.
Preferably, optical maser wavelength is 1064nm, and laser pulse repetition frequency is 25Hz, and pulse width is 0.8ms, source, laser apparatus
Electric current is determined for 180A.
In the present embodiment, it furthermore present the setup parameter of the optimal laser of implementation result.Learnt through experiment, when sharp
Light working medium is YAG crystal, and optical maser wavelength is 1064nm, and laser pulse repetition frequency is 25Hz, and pulse width is 0.8ms, laser
When setting electric current is 180A, the precision in the hole 2 on hollow circular-tube surface reaches most preferably, drastically increases the quality of spinning.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (7)
1. a kind of friction spinning machine screen cloth, it is characterised in that including the spinning roller turned round in the same direction for a pair, each spinning roller
Including hollow circular-tube, the hollow circular-tube outer surface is provided with stiffening layer, and the hollow circular-tube outer surface, which is provided with described in insertion, to be added
The hole of the tube wall of hard formation and the hollow circular-tube, the stiffening layer is hard chromium layers, and the thickness of the hard chromium layers is 0.04-
0.05mm, the outer surface of the spinning roller is provided with several punching circles, and the hole that is intervally arranged is enclosed in the punching, adjacent to beat
Spacing is the folder that any adjacent holes are formed with the center of circle for punching circle on 0.4-0.5mm, the punching circle between the circle of hole
Angle is equal, and the angle is 1.6-1.7 degree, and 5 holes in any one region in hole on the hollow circular-tube surface are in plum blossom-shaped, described
The processing method of spinning roller includes：The stiffening layer is electroplated on the outer surface of the hollow circular-tube；Electroplating the stiffening layer
Laser boring is carried out on the hollow circular-tube outer surface afterwards；Laser working medium is YAG crystal, optical maser wavelength in laser boring
For 1064nm, laser pulse repetition frequency is 20~30Hz, and pulse width is 0.5~1.1ms, laser setting electric current is 150~
200A, auxiliary gas is the compressed air by purification.
2. friction spinning machine screen cloth as claimed in claim 1, it is characterised in that be intervally arranged on the punching circle described
A diameter of 0.85-0.95mm in hole.
3. friction spinning machine screen cloth as claimed in claim 2, it is characterised in that be intervally arranged on the punching circle described
A diameter of 0.9mm in hole.
4. friction spinning machine screen cloth as claimed in claim 1, it is characterised in that spacing is between the adjacent punching circle
0.45mm。
5. friction spinning machine screen cloth as claimed in claim 1, it is characterised in that described hollow circular-tube one end is set on outer surface
There is flange mounting surface.
6. the friction spinning machine screen cloth as described in claim 1-5 any one, it is characterised in that the hollow circular-tube is 20
Number seamless steel pipe.
7. the friction spinning machine screen cloth as described in claim 1-5 any one, it is characterised in that described two spinning rollers it
Between at intervals of 0.1-0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045353.8A CN104726973B (en) | 2015-01-28 | 2015-01-28 | Friction spinning machine screen cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045353.8A CN104726973B (en) | 2015-01-28 | 2015-01-28 | Friction spinning machine screen cloth |
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| Publication Number | Publication Date |
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| CN104726973A CN104726973A (en) | 2015-06-24 |
| CN104726973B true CN104726973B (en) | 2017-07-25 |
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ID=53451371
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| CN201510045353.8A Active CN104726973B (en) | 2015-01-28 | 2015-01-28 | Friction spinning machine screen cloth |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108779A (en) * | 1985-12-20 | 1987-07-22 | 联合碳化公司 | A kind of for the processing tensile part laser engraving, wear-resisting, the new ceramic used of friction roller or the metal carbide surface with and the method for manufacture method and processing tensile part |
| EP0267620A1 (en) * | 1986-11-13 | 1988-05-18 | Maschinenfabrik Rieter Ag | Friction-spinning roller |
| US4769983A (en) * | 1986-08-29 | 1988-09-13 | Fritz Stahlecker | Roller for an open-end friction spinning arrangement |
| US4882015A (en) * | 1986-11-13 | 1989-11-21 | Rieter Machine Works Ltd. | Method for manufacturing a perforated body, friction spinning means using the perforated body and a friction spinning device using the friction spinning means |
| US4968525A (en) * | 1986-11-13 | 1990-11-06 | Rieter Machine Works Ltd. | Method for production of friction spinning means |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202809072U (en) * | 2012-07-27 | 2013-03-20 | 四川天亿纺织有限公司 | Drawing roller for cotton spinning |
-
2015
- 2015-01-28 CN CN201510045353.8A patent/CN104726973B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86108779A (en) * | 1985-12-20 | 1987-07-22 | 联合碳化公司 | A kind of for the processing tensile part laser engraving, wear-resisting, the new ceramic used of friction roller or the metal carbide surface with and the method for manufacture method and processing tensile part |
| US4769983A (en) * | 1986-08-29 | 1988-09-13 | Fritz Stahlecker | Roller for an open-end friction spinning arrangement |
| EP0267620A1 (en) * | 1986-11-13 | 1988-05-18 | Maschinenfabrik Rieter Ag | Friction-spinning roller |
| US4882015A (en) * | 1986-11-13 | 1989-11-21 | Rieter Machine Works Ltd. | Method for manufacturing a perforated body, friction spinning means using the perforated body and a friction spinning device using the friction spinning means |
| US4968525A (en) * | 1986-11-13 | 1990-11-06 | Rieter Machine Works Ltd. | Method for production of friction spinning means |
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