US3460201A - Cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine - Google Patents
Cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine Download PDFInfo
- Publication number
- US3460201A US3460201A US620080A US3460201DA US3460201A US 3460201 A US3460201 A US 3460201A US 620080 A US620080 A US 620080A US 3460201D A US3460201D A US 3460201DA US 3460201 A US3460201 A US 3460201A
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- US
- United States
- Prior art keywords
- air
- chamber
- conduit
- cooling
- cabinet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
Definitions
- a conduit is mounted inside 1 the pressure chamber for feeding air into the cooling chamber, said conduit being provided with perforations in the portion of its surface which faces 'in a direction opposite the filament being spun.
- Atleast one auxiliary chamber is connected to the pressure chamber via the conduit for damping air-stream pulsation.
- the conduit is of variable cross-section and perforations in the pressure chamber diminish 'in size in a direction towards the spinning nozzle of the spinning machine.
- the portion of the conduit extending into the auxiliary chamber is of cylindrical construction and is perforated with holes of uniform size.
- This invention relates to devices for filament formation and, more particularly, to cabinets for cooling filament by an air stream in the process of the formation thereof.
- Prior art cabinets for cooling filament by an air-stream comprise a pressure chamber inside which a perforated cylindrical tube for air supply is provided, and a cooling chamber.
- the known cabinets are disadvantageous in that no provision is made therein for damping the air stream pulsation, moreover, they fail to provide a uniform air stream velocity over the entire height of the cooling chamber, which adversely affects the quality of the filament being spun, that is, it increases its irregularity with respect to count and reduces its tenacity.
- a cabinet for cooling filament by an air stream which comprises a cooling chamber and a pressure chamber connected thereto and incorporating a perforated built-in conduit, an auxiliary chamher being connected to the pressure chamber through said conduit which is of variable cross-section and is perforated in its portion accommodated inside said auxiliary chamber.
- the perforations in the conduit portion located inside the pressure chamber be of variable diameter so as to reduce in size towards the spinning nozzle of a spinning machine.
- the aforesaid auxiliary chamber is equipped with a valve to control the amount ofair fed to the cooling chamber.
- Said valve to control the air expenditure can be made in the form of an elastic spring whose lead can be smoothly varied by means of a lead screw.
- a filament cooling cabinet according to the invention is installed on a spinning machine beyond a spinning nozzle 1, and consists of chambers-2 and 3 adapted for feeding air, and a cooling chamber 4 which is separated from chamber 3 by a screen 5.
- Chambers 2 and.3 are accommodated in a common housing 6 and are separated from each other by a partition 7.
- the abovesaid chambers 2 and 3 are interconnected by means of a common conduit whose lower portion 8, which runsinto chamber 2, is made cylindrical, while its upper portion 9 is tapered and extends into chamber 3.
- Cylindrical portion 8 of said conduit is provided with holes 10'of equal diameter, spaced uniformly over the Whole surface thereof.
- Tapered portion 9 of the conduit is provided with holes 11 disposed only on the portion of the surface which faces the side opposite screens 5. Holes 11 vary in diameter and decrease in size in a direction from bottom to top over the entire height of the tapered portion 9 of the conduit to ensure a uniform air stream velocity through the entire height of cooling chamber 4.
- the lower portion of chamber 2 is connected to a device 12 for regulating the rate of air feed to cooling chamber 4.
- Device 12 is constructed as a lead screw 13 on which is threaded a nut 14 coupled to an elastic spring 16 through a lever 15. Air is fed to chambers 2 and 3 from a common air main (not shown in the drawing), via a connection 17. The direction of air stream in the cabinet is indicated by arrow A.
- the cabinet of the present invention functions as follows: Air from the main, having passed through connection 17 and between the coils of spring 16, is fed into chamber 2. While passing between the coils of spring 16, partial damping of the air stream pulsation takes place.
- the air stream runs via holes 10 into cylindrical portion 8 of the conduit, owing to which an additional damping of the air stream pulsation occurs. Thereupon, the partially dampened air stream is fed into tapered portion 9 of the conduit.
- the air stream Upon escaping through holes 11, the air stream is reflected from the inner surface of housing 6 and passes through screens 5 into cooling chamber 4 where filament 18 is cooled. It is inside chamber 3 that the air pulsation is completely dampened and, owing to the appropriate arrangement of holes 11 and the variable cross-section of the conduit, a uniform exhaust velocity of the air streams is attained over the entire height of cooling chamber 4.
- the quantity of air, fed into cooling chamber 4, is controlled by variation of the intercoil distance (i.e. the lead) of spring 16 by means of turning lead screw 13.
- a pressure gage is connected to chamber 2 wherein an opening 19 is made for the purpose.
- the cooling cabinet according to the invention makes it possible to obtain filaments of negligible irregularity with respect to count and of higher tenacity.
- a cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine comprising: a pressure chamber; a cooling chamber inside which filament is formed, said cooling chamber being coupled to said pressure chamber; a means for interconnecting said pressure chamber and said cooling chamber; a conduit mounted inside said pressure chamber for feeding air into said cooling chamber, said conduit being provided with perforations in the portion of its surface which faces the side opposite the filament being spun; and at least one auxiliary chamber connected to said pressure chamber via said conduit for damping air stream pulsation; said conduit being of variable cross-section and its portion, extending into said auxiliary chamber, being provided with perforations.
- a cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine comprising: a pressure chamber; a cooling chamber inside which filament is formed, said cooling chamber being coupled to said pressure chamber; a means for interconnecting said pressure chamber and said cooling chamber; a conduit mounted inside said pressure chamber for feeding air into said cooling chamber, said conduit being provided with perforations in that portion of its surface which faces the side opposite the filament being spun; at least one auxiliary chamber connected to said pressure chamber via said conduit for damping air stream pulsation; said conduit being of variable cross-section and its portion, extending into said auxiliary chamber, being provided with perforations; and means for regulating the amount of air stream fed into the cooling chamber, the latter said means being connected to said auxiliary chamber.
- a cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine comprising: a pressure chamber; a cooling chamber inside which filament is formed, said cooling chamber being coupled to said pressure chamber; a means for interconnecting said pressure chamber and said cooling chamber; a conduit mounted inside said pressure chamber for feeding air into said cooling chamber, said conduit being provided with perforations in that portion of its surface which faces the side opposite the filament being spun; the holes perforated in said portion of said conduit being made of variable diameter and reducing in size towards the spinning nozzle of the spinning machine; at least one auxiliary chamber coupled to said pressure chamber via said conduit for damping air stream pulsation; said conduit being of variable cross-section and its portion, extending into said auxiliary chamber, being provided with perforations; and means for regulating the amount of air fed into the cooling chamber, the latter said means being coupled to said auxiliary chamber.
- a cabinet as claimed in claim 3, wherein the means for regulating the amount of air fed into the cooling chamber comprises an elastic spring, the lead of said spring being smoothly variable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Description
Au 12, 1969 A, P, z rrsgv ET AL 3,460,201
CABINET FOR AIR-STREAM COOLING OF FILAMENT SPUN FROM A POLYMERIC MELT IN A SPINNING MACHINE Filed March a. 1967 United States Patent Oflice 3,460,201 Patented Aug. 12, 1 969 Claims 7 ABSTRACT on THE fm'scLosUR n A cabinet for air cooling filament spun from a polymeric melt, wherein the filament is passed through a coollng chamber which communicates with a pressure chamber via a perforate screen. A conduit is mounted inside 1 the pressure chamber for feeding air into the cooling chamber, said conduit being provided with perforations in the portion of its surface which faces 'in a direction opposite the filament being spun. Atleast one auxiliary chamber is connected to the pressure chamber via the conduit for damping air-stream pulsation. The conduit is of variable cross-section and perforations in the pressure chamber diminish 'in size in a direction towards the spinning nozzle of the spinning machine. The portion of the conduit extending into the auxiliary chamber is of cylindrical construction and is perforated with holes of uniform size.
This invention relates to devices for filament formation and, more particularly, to cabinets for cooling filament by an air stream in the process of the formation thereof.
Prior art cabinets for cooling filament by an air-stream comprise a pressure chamber inside which a perforated cylindrical tube for air supply is provided, and a cooling chamber.
The known cabinets, however, are disadvantageous in that no provision is made therein for damping the air stream pulsation, moreover, they fail to provide a uniform air stream velocity over the entire height of the cooling chamber, which adversely affects the quality of the filament being spun, that is, it increases its irregularity with respect to count and reduces its tenacity.
Attempts to eliminate these disadvantages have not heretofore been effective.
It is an object of this invention to provide for damping of the air stream pulsation.
It is another object of this invention to provide a uniform air stream velocity over the entire height of the cooling chamber.
It is still another object of this invention to improve the quality of the filament being spun.
In the accomplishment of these and other objects of the invention, there is provided a cabinet for cooling filament by an air stream, which comprises a cooling chamber and a pressure chamber connected thereto and incorporating a perforated built-in conduit, an auxiliary chamher being connected to the pressure chamber through said conduit which is of variable cross-section and is perforated in its portion accommodated inside said auxiliary chamber.
It is expedient that the perforations in the conduit portion located inside the pressure chamber be of variable diameter so as to reduce in size towards the spinning nozzle of a spinning machine.
The aforesaid auxiliary chamber is equipped with a valve to control the amount ofair fed to the cooling chamber.
Said valve to control the air expenditure can be made in the form of an elastic spring whose lead can be smoothly varied by means of a lead screw.
For a complete understanding of the invention, a specific embodiment thereof will be described hereinbelow with reference to the appended drawing wherein a longitudinal sectional view of the cabinet according to the invention is shown. r
A filament cooling cabinet according to the invention is installed on a spinning machine beyond a spinning nozzle 1, and consists of chambers-2 and 3 adapted for feeding air, and a cooling chamber 4 which is separated from chamber 3 by a screen 5.
Cylindrical portion 8 of said conduit is provided with holes 10'of equal diameter, spaced uniformly over the Whole surface thereof.
Tapered portion 9 of the conduit is provided with holes 11 disposed only on the portion of the surface which faces the side opposite screens 5. Holes 11 vary in diameter and decrease in size in a direction from bottom to top over the entire height of the tapered portion 9 of the conduit to ensure a uniform air stream velocity through the entire height of cooling chamber 4.
The lower portion of chamber 2 is connected to a device 12 for regulating the rate of air feed to cooling chamber 4. Device 12 is constructed as a lead screw 13 on which is threaded a nut 14 coupled to an elastic spring 16 through a lever 15. Air is fed to chambers 2 and 3 from a common air main (not shown in the drawing), via a connection 17. The direction of air stream in the cabinet is indicated by arrow A.
The cabinet of the present invention functions as follows: Air from the main, having passed through connection 17 and between the coils of spring 16, is fed into chamber 2. While passing between the coils of spring 16, partial damping of the air stream pulsation takes place.
From chamber 2 the air stream runs via holes 10 into cylindrical portion 8 of the conduit, owing to which an additional damping of the air stream pulsation occurs. Thereupon, the partially dampened air stream is fed into tapered portion 9 of the conduit.
Upon escaping through holes 11, the air stream is reflected from the inner surface of housing 6 and passes through screens 5 into cooling chamber 4 where filament 18 is cooled. It is inside chamber 3 that the air pulsation is completely dampened and, owing to the appropriate arrangement of holes 11 and the variable cross-section of the conduit, a uniform exhaust velocity of the air streams is attained over the entire height of cooling chamber 4.
The quantity of air, fed into cooling chamber 4, is controlled by variation of the intercoil distance (i.e. the lead) of spring 16 by means of turning lead screw 13.
To control air expenditure, a pressure gage is connected to chamber 2 wherein an opening 19 is made for the purpose.
Thus, the cooling cabinet according to the invention makes it possible to obtain filaments of negligible irregularity with respect to count and of higher tenacity.
What we claim is:
1. A cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine, comprising: a pressure chamber; a cooling chamber inside which filament is formed, said cooling chamber being coupled to said pressure chamber; a means for interconnecting said pressure chamber and said cooling chamber; a conduit mounted inside said pressure chamber for feeding air into said cooling chamber, said conduit being provided with perforations in the portion of its surface which faces the side opposite the filament being spun; and at least one auxiliary chamber connected to said pressure chamber via said conduit for damping air stream pulsation; said conduit being of variable cross-section and its portion, extending into said auxiliary chamber, being provided with perforations.
2. A cabinet as claimed in claim 1, wherein the holes perforated in that portion of the conduit which is accommodated inside the pressure chamber are of variable diameter and diminish in size towards the spinning nozzle of the spinning machine.
3. A cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine, comprising: a pressure chamber; a cooling chamber inside which filament is formed, said cooling chamber being coupled to said pressure chamber; a means for interconnecting said pressure chamber and said cooling chamber; a conduit mounted inside said pressure chamber for feeding air into said cooling chamber, said conduit being provided with perforations in that portion of its surface which faces the side opposite the filament being spun; at least one auxiliary chamber connected to said pressure chamber via said conduit for damping air stream pulsation; said conduit being of variable cross-section and its portion, extending into said auxiliary chamber, being provided with perforations; and means for regulating the amount of air stream fed into the cooling chamber, the latter said means being connected to said auxiliary chamber.
4. A cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine, comprising: a pressure chamber; a cooling chamber inside which filament is formed, said cooling chamber being coupled to said pressure chamber; a means for interconnecting said pressure chamber and said cooling chamber; a conduit mounted inside said pressure chamber for feeding air into said cooling chamber, said conduit being provided with perforations in that portion of its surface which faces the side opposite the filament being spun; the holes perforated in said portion of said conduit being made of variable diameter and reducing in size towards the spinning nozzle of the spinning machine; at least one auxiliary chamber coupled to said pressure chamber via said conduit for damping air stream pulsation; said conduit being of variable cross-section and its portion, extending into said auxiliary chamber, being provided with perforations; and means for regulating the amount of air fed into the cooling chamber, the latter said means being coupled to said auxiliary chamber.
5. A cabinet as claimed in claim 3, wherein the means for regulating the amount of air fed into the cooling chamber comprises an elastic spring, the lead of said spring being smoothly variable.
References Cited UNITED STATES PATENTS 2,252,684 8/ 1941 Babcock. 2,947,029 8/ 1960 Balsker. 3,067,458 12/ 1962 Dauehert. 3,299,469 l/ 1967 Charlton.
WILLIAM J. STEPHENSON, Primary Examiner
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB48438/66A GB1150590A (en) | 1966-10-28 | 1966-10-28 | Apparatus for Filament Cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3460201A true US3460201A (en) | 1969-08-12 |
Family
ID=10448606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US620080A Expired - Lifetime US3460201A (en) | 1966-10-28 | 1967-03-02 | Cabinet for air-stream cooling of filament spun from a polymeric melt in a spinning machine |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3460201A (en) |
| DE (1) | DE1660684A1 (en) |
| GB (1) | GB1150590A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3679786A (en) * | 1970-05-21 | 1972-07-25 | Phillips Fibers Corp | Method and apparatus for melt spinning of synthetic filaments |
| US3834847A (en) * | 1970-01-16 | 1974-09-10 | Du Pont | Open cell foam device for gas distribution in filament quenching chimneys |
| US4712988A (en) * | 1987-02-27 | 1987-12-15 | E. I. Du Pont De Nemours And Company | Apparatus for quenching melt sprun filaments |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105274636A (en) * | 2014-07-10 | 2016-01-27 | 江苏天地化纤有限公司 | A spinning annular blast apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2252684A (en) * | 1938-08-09 | 1941-08-19 | Du Pont | Apparatus for the production of artificial structures |
| US2947029A (en) * | 1955-02-15 | 1960-08-02 | American Enka Corp | Tilting blow box |
| US3067458A (en) * | 1959-04-07 | 1962-12-11 | Du Pont | Melt spinning apparatus and process |
| US3299469A (en) * | 1964-11-18 | 1967-01-24 | Du Pont | Melt-spinning apparatus |
-
1966
- 1966-10-28 GB GB48438/66A patent/GB1150590A/en not_active Expired
-
1967
- 1967-03-02 US US620080A patent/US3460201A/en not_active Expired - Lifetime
- 1967-04-12 DE DE19671660684 patent/DE1660684A1/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2252684A (en) * | 1938-08-09 | 1941-08-19 | Du Pont | Apparatus for the production of artificial structures |
| US2947029A (en) * | 1955-02-15 | 1960-08-02 | American Enka Corp | Tilting blow box |
| US3067458A (en) * | 1959-04-07 | 1962-12-11 | Du Pont | Melt spinning apparatus and process |
| US3299469A (en) * | 1964-11-18 | 1967-01-24 | Du Pont | Melt-spinning apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3834847A (en) * | 1970-01-16 | 1974-09-10 | Du Pont | Open cell foam device for gas distribution in filament quenching chimneys |
| US3679786A (en) * | 1970-05-21 | 1972-07-25 | Phillips Fibers Corp | Method and apparatus for melt spinning of synthetic filaments |
| US4712988A (en) * | 1987-02-27 | 1987-12-15 | E. I. Du Pont De Nemours And Company | Apparatus for quenching melt sprun filaments |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1660684A1 (en) | 1971-06-09 |
| GB1150590A (en) | 1969-04-30 |
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