CA1069483A - Strand cutting device for continuous glass fiber winding apparatus - Google Patents
Strand cutting device for continuous glass fiber winding apparatusInfo
- Publication number
- CA1069483A CA1069483A CA286,786A CA286786A CA1069483A CA 1069483 A CA1069483 A CA 1069483A CA 286786 A CA286786 A CA 286786A CA 1069483 A CA1069483 A CA 1069483A
- Authority
- CA
- Canada
- Prior art keywords
- strand
- spool
- winding
- turntable
- spools
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/70—Other constructional features of yarn-winding machines
- B65H54/71—Arrangements for severing filamentary materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
- B65H67/04—Arrangements for removing completed take-up packages and or replacing by cores, formers, or empty receptacles at winding or depositing stations; Transferring material between adjacent full and empty take-up elements
- B65H67/044—Continuous winding apparatus for winding on two or more winding heads in succession
- B65H67/048—Continuous winding apparatus for winding on two or more winding heads in succession having winding heads arranged on rotary capstan head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
- B65H2701/312—Fibreglass strands
- B65H2701/3122—Fibreglass strands extruded from spinnerets
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Replacement Of Web Rolls (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Winding Filamentary Materials (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A water jet from a nozzle is laterally directed against a glass fiber strand bridge formed between a loaded spool and an empty spool as a turntable rotatably mounting the two spools is indexed 180° to reverse the positions of the spools between standby and winding stations. The jet is synchronized with the turntable rotation, and cleanly severs the strand so that winding may continue on the empty spool while the loaded spool is removed and replaced with a new empty spool.
A water jet from a nozzle is laterally directed against a glass fiber strand bridge formed between a loaded spool and an empty spool as a turntable rotatably mounting the two spools is indexed 180° to reverse the positions of the spools between standby and winding stations. The jet is synchronized with the turntable rotation, and cleanly severs the strand so that winding may continue on the empty spool while the loaded spool is removed and replaced with a new empty spool.
Description
B.~CKGROUND OF THE INVE;NTION
This invention relates to a strand cutting device for a con~inuous glass ~iber winding apparatus wherein a fully wound spool is rotationally indexed to a s-tandby position and simultaneously replaced by an empty spool, and in which the glass ~iber strand bridging the loaded and empty spools is cleanly severed ~o enable the removal of the loaded spool and its replacement by a new empty spool.
In a conventional continuous strand winding apparatus, a loaded or fully wound spool iS moved from the winding position to a standby position and replaced by an empty spool, and the strand length that is thus formea b~tween the end sections of the spools mus-t the.refore be cut so that the winding operation may continue on the new or empty spool. In the prior art such strand cutting has been implemented by applying tension to the bridging strand, as by changing the relative rotational speeds of the two spools using a brake on the empty spool, or by applying a cutting edge to the strand. Both methods require an .
intricate and costly turntable mechanism, however, and are further disadvantageous in that they cause the severed ends of the str~nd to b~come markedly fluffed and split.
SUMMARY OF THE INVENTION
According to this invention it is unnecessary to establish a rotational speed difference between the loaded and empty spools, and~no strand cutting edge is necessary. More speclfically, the g}ass fiber strand is severed by merely applying a water jet to tha length of the strand bridging the two spools, which produces a sharp cut-off and avoids any lateral - :
~ fluffing or end splitting perpendicular to the s~rand direction.
The overall construction of the cutting device is ~hus relatively simple, and does not in any way interfere with the structure or functioning of the turntable or its indexing mechanism.
. :
- ..
~L~6~33 BRIEF DESCR:~PTIO~ OF THE DR~WING
.
In the drawing:
Fig. 1 shows a plan view of a glass fiber strand cutting and winding apparatus according to this invention, and Fig. 2 shows a perspective view of the apparatus of Fig. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMEN~
Referring to the accompanying drawing, the outer end surface 2 of a turntable 1 is divided into two symmetrical areas or work stations by a separator 3, although three or more such areas could also be provided. Winding spools 4, 5 of the cage bar type are removably mounted on the turntable at each of the respective work areas. The turntable 1 is intermittently rotated 180 by a driven shaft 6 such that when one of the spool mounts is at a strand winding position the outer SpOGl mount is at a standby position. Thus, when a spool becomes full~ wound at the winding position it is rotated or advanced to the standby posit~on and simultaneously replaced by an empty spool at the winding position. The spools ~ and 5 are each rotated in a clockwise winding direction by respective drive devices 7 and 8.
Referen~e numeral 9 designates a strand traversing or level wind device, and reference numeral 10 designates a strand guide device that operates to guide the incoming strand 12 onto an end section 13 of the spool 5 when the latter becomes fully wound. At approximately the same time the turntable drive is actuated to rotate the loaded spool 5 to the standby position and simultaneously deliver an awaiting empty -~ .
spool 4 to the winding position. Such turntable rotation or lndexing automatically introduces the strand 12 to the end ' ' section 11 of the new spool 4, whereat i-t forms ~ bridging strand length 16 spanning the gap be-~ween -the ends of the spools 4,5.
The end sections 11, 13 comprise reduced diameter portions of the spools.
As in the conventional device, the en~ surface of the separator 3 is recessed -from the end surfaces 14 and 15 of the spools 4 and 5, respectively, so that the strand 12 can be bxidged in a straight line between the end sections 11, 13 as the turntable 1 is being rotated. A~ter the s-trand briage 16 is severed the loaded spool 5 at the standby position is removed and replaced by an empty or new spool. The cut ends of the strands adhere to their respective spools owing to both the laminar circular air flow established around the peripheral surfaces of the rapidly turning spools and sticklness caused by the lubrican-ts and coating agents applied to the glass fibers during their draw forming.
According to this invention the strand bridge is cut-off during the continuous winding operation by a water jet 18 from a nozzle 17 di~posed perpendicular to the direction ~ ;
, of the strand bridge, whereby the water jet impinges on the strand bridge at a right angle.
The nozzle 17 is fixedly secured to the frame of the apparatus by a supply pipe 19 connected to a pressurized water source (not shown). The water supply is actuated by a control device (not shown) in synchronization with the intermittent rotation and stop of the turntable, such that immediately after the turntable is at rest, as shown in Fig. 2, the water jet is initiated.
Reference numeral 20 designates an apertured pipe for jetting cleaning water onto the concave sidewalls 21 or 22 . : :
~6~4~3 1 o~ the sep~rator 3. Lubricants, surface coating agents, etc. applied to ~he glass fiber strand during its draw forming operation are liable to adhere to the sidewaIls of the separator during winding, and frequent cleaning is thus required It is preferable to avoid wet~ing the strand being wound during the cleaning operation, whereby the pipe 20 is mounted parallel to the separator 3 at the standby position so that the water jets 23 only strike the sidewall 21 thereat.
The mechanism whereby the strand 16 is cleanly severed by the water jet 18 in a perpendicular sectional plane is not fully understood, although it is believed probable that the cutting action derives from the low shear force resistance property of glass fibers.
The cutting of the strand is independent of -the tension applied to the strand bridge 16, and is eff~cted as long as the strand bridge is laid in a straLght line between the two spools. Thus, the cutting action takes place even though the two spools are rotated at equal speeds. This avoids a drawback of the prior art tension severing method, whereby .
the èmpty spool must be braked and thereafter brought up to full ~; winding speed again, which disrupts the smooth continuity of th~e winding operation.
Various experiments were conducted winding glass fiber strands having weights of 80, 160 and 320 gms./km.
under the oonditions aet forth below.
~ First, the inside~ dlameter of the nozzle 17 was set at 8 mm, the distance between the end of the nozzle and the ~strand bridge 16 was~370 mm, and the water jet was allowed to strike the strand bridge~under a pressure of 1.5 - 2.0 kg/cm2 3~ All o the different size strands were sharply sevéred in 3-5 ~ .
~ ~ - 4 -: ' --seconds by the water jet, and therea~ter continued to be woundon the empty spools.
When the inside diameter of the nozzle was reduced to 3 mm the strands could not be cut because of an insufficient quantity of water. When the nozzle diameter was increased to 5 mm cutting could be achieved, but it was necessary to precisely contro] the airection of the water ~et such that it was accurately centered on the strand bridge 16.
In contrast, when the nozzle diameter was increased 1~ to more than 10 mm the ~uantity of water was too great, as a result of which ~he severed strand was caused to swing and it was impossible to wind it on the empty spool.
At the stated water pressure, the best results were thus obtained with an inside nozzle diameter on the order of 8 mm.
When the distance between the end of the nozzle and the strand bridge was reduced to 250 mm the water jet pressure was too high, whereby the severed strand was caused to swing and it could not be wound on the empty spool. On the --other hand, when the distance was set at 450 mm the water jet pressure was too low to achieve efficient strand cutting. Thus, with the given waker pre~sure and nozzle diameter parameters, . .
the most suitable distance between the end of ~he nozzle and the strand bridge was found to be 3 0 0 - 4 0 0 mm.
..
3~ ~ -. .
: : . .
' .
This invention relates to a strand cutting device for a con~inuous glass ~iber winding apparatus wherein a fully wound spool is rotationally indexed to a s-tandby position and simultaneously replaced by an empty spool, and in which the glass ~iber strand bridging the loaded and empty spools is cleanly severed ~o enable the removal of the loaded spool and its replacement by a new empty spool.
In a conventional continuous strand winding apparatus, a loaded or fully wound spool iS moved from the winding position to a standby position and replaced by an empty spool, and the strand length that is thus formea b~tween the end sections of the spools mus-t the.refore be cut so that the winding operation may continue on the new or empty spool. In the prior art such strand cutting has been implemented by applying tension to the bridging strand, as by changing the relative rotational speeds of the two spools using a brake on the empty spool, or by applying a cutting edge to the strand. Both methods require an .
intricate and costly turntable mechanism, however, and are further disadvantageous in that they cause the severed ends of the str~nd to b~come markedly fluffed and split.
SUMMARY OF THE INVENTION
According to this invention it is unnecessary to establish a rotational speed difference between the loaded and empty spools, and~no strand cutting edge is necessary. More speclfically, the g}ass fiber strand is severed by merely applying a water jet to tha length of the strand bridging the two spools, which produces a sharp cut-off and avoids any lateral - :
~ fluffing or end splitting perpendicular to the s~rand direction.
The overall construction of the cutting device is ~hus relatively simple, and does not in any way interfere with the structure or functioning of the turntable or its indexing mechanism.
. :
- ..
~L~6~33 BRIEF DESCR:~PTIO~ OF THE DR~WING
.
In the drawing:
Fig. 1 shows a plan view of a glass fiber strand cutting and winding apparatus according to this invention, and Fig. 2 shows a perspective view of the apparatus of Fig. 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMEN~
Referring to the accompanying drawing, the outer end surface 2 of a turntable 1 is divided into two symmetrical areas or work stations by a separator 3, although three or more such areas could also be provided. Winding spools 4, 5 of the cage bar type are removably mounted on the turntable at each of the respective work areas. The turntable 1 is intermittently rotated 180 by a driven shaft 6 such that when one of the spool mounts is at a strand winding position the outer SpOGl mount is at a standby position. Thus, when a spool becomes full~ wound at the winding position it is rotated or advanced to the standby posit~on and simultaneously replaced by an empty spool at the winding position. The spools ~ and 5 are each rotated in a clockwise winding direction by respective drive devices 7 and 8.
Referen~e numeral 9 designates a strand traversing or level wind device, and reference numeral 10 designates a strand guide device that operates to guide the incoming strand 12 onto an end section 13 of the spool 5 when the latter becomes fully wound. At approximately the same time the turntable drive is actuated to rotate the loaded spool 5 to the standby position and simultaneously deliver an awaiting empty -~ .
spool 4 to the winding position. Such turntable rotation or lndexing automatically introduces the strand 12 to the end ' ' section 11 of the new spool 4, whereat i-t forms ~ bridging strand length 16 spanning the gap be-~ween -the ends of the spools 4,5.
The end sections 11, 13 comprise reduced diameter portions of the spools.
As in the conventional device, the en~ surface of the separator 3 is recessed -from the end surfaces 14 and 15 of the spools 4 and 5, respectively, so that the strand 12 can be bxidged in a straight line between the end sections 11, 13 as the turntable 1 is being rotated. A~ter the s-trand briage 16 is severed the loaded spool 5 at the standby position is removed and replaced by an empty or new spool. The cut ends of the strands adhere to their respective spools owing to both the laminar circular air flow established around the peripheral surfaces of the rapidly turning spools and sticklness caused by the lubrican-ts and coating agents applied to the glass fibers during their draw forming.
According to this invention the strand bridge is cut-off during the continuous winding operation by a water jet 18 from a nozzle 17 di~posed perpendicular to the direction ~ ;
, of the strand bridge, whereby the water jet impinges on the strand bridge at a right angle.
The nozzle 17 is fixedly secured to the frame of the apparatus by a supply pipe 19 connected to a pressurized water source (not shown). The water supply is actuated by a control device (not shown) in synchronization with the intermittent rotation and stop of the turntable, such that immediately after the turntable is at rest, as shown in Fig. 2, the water jet is initiated.
Reference numeral 20 designates an apertured pipe for jetting cleaning water onto the concave sidewalls 21 or 22 . : :
~6~4~3 1 o~ the sep~rator 3. Lubricants, surface coating agents, etc. applied to ~he glass fiber strand during its draw forming operation are liable to adhere to the sidewaIls of the separator during winding, and frequent cleaning is thus required It is preferable to avoid wet~ing the strand being wound during the cleaning operation, whereby the pipe 20 is mounted parallel to the separator 3 at the standby position so that the water jets 23 only strike the sidewall 21 thereat.
The mechanism whereby the strand 16 is cleanly severed by the water jet 18 in a perpendicular sectional plane is not fully understood, although it is believed probable that the cutting action derives from the low shear force resistance property of glass fibers.
The cutting of the strand is independent of -the tension applied to the strand bridge 16, and is eff~cted as long as the strand bridge is laid in a straLght line between the two spools. Thus, the cutting action takes place even though the two spools are rotated at equal speeds. This avoids a drawback of the prior art tension severing method, whereby .
the èmpty spool must be braked and thereafter brought up to full ~; winding speed again, which disrupts the smooth continuity of th~e winding operation.
Various experiments were conducted winding glass fiber strands having weights of 80, 160 and 320 gms./km.
under the oonditions aet forth below.
~ First, the inside~ dlameter of the nozzle 17 was set at 8 mm, the distance between the end of the nozzle and the ~strand bridge 16 was~370 mm, and the water jet was allowed to strike the strand bridge~under a pressure of 1.5 - 2.0 kg/cm2 3~ All o the different size strands were sharply sevéred in 3-5 ~ .
~ ~ - 4 -: ' --seconds by the water jet, and therea~ter continued to be woundon the empty spools.
When the inside diameter of the nozzle was reduced to 3 mm the strands could not be cut because of an insufficient quantity of water. When the nozzle diameter was increased to 5 mm cutting could be achieved, but it was necessary to precisely contro] the airection of the water ~et such that it was accurately centered on the strand bridge 16.
In contrast, when the nozzle diameter was increased 1~ to more than 10 mm the ~uantity of water was too great, as a result of which ~he severed strand was caused to swing and it was impossible to wind it on the empty spool.
At the stated water pressure, the best results were thus obtained with an inside nozzle diameter on the order of 8 mm.
When the distance between the end of the nozzle and the strand bridge was reduced to 250 mm the water jet pressure was too high, whereby the severed strand was caused to swing and it could not be wound on the empty spool. On the --other hand, when the distance was set at 450 mm the water jet pressure was too low to achieve efficient strand cutting. Thus, with the given waker pre~sure and nozzle diameter parameters, . .
the most suitable distance between the end of ~he nozzle and the strand bridge was found to be 3 0 0 - 4 0 0 mm.
..
3~ ~ -. .
: : . .
' .
Claims
1. In a continuous glass fiber strand winding apparatus including a turntable, a pair of rotatably driven spools mounted on the turntable at winding and standby positions, means for continuously supplying a glass fiber strand to the spool at the winding position for winding thereon, and means for rotating the turntable when the spool at the winding position becomes fully loaded to thereby index the loaded spool to the standby position and an empty spool to the winding position, and simultaneously form a bridge strand between the loaded and empty spools, means for severing the bridge strand while in a wet state to enable continued winding on the empty spool, characterised by:
a) a nozzle having an inside diameter of 5mm to 10mm disposed at a distance of 300 to 400mm from the bridge strand and oriented such that a water jet supplied therefrom laterally strikes the bridge strand in a substantially perpendicular direction, and b) means for supplying pressurized water at a pressure of from 1.5 to 2.0 kg/cm2 to the nozzle to sever the bridge strand.
a) a nozzle having an inside diameter of 5mm to 10mm disposed at a distance of 300 to 400mm from the bridge strand and oriented such that a water jet supplied therefrom laterally strikes the bridge strand in a substantially perpendicular direction, and b) means for supplying pressurized water at a pressure of from 1.5 to 2.0 kg/cm2 to the nozzle to sever the bridge strand.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11615776A JPS5341519A (en) | 1976-09-28 | 1976-09-28 | Yarn cutting devices for continuous winding apparatu ses of glass filament yarns |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1069483A true CA1069483A (en) | 1980-01-08 |
Family
ID=14680173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA286,786A Expired CA1069483A (en) | 1976-09-28 | 1977-09-15 | Strand cutting device for continuous glass fiber winding apparatus |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5341519A (en) |
| BE (1) | BE859052A (en) |
| BR (1) | BR7706382A (en) |
| CA (1) | CA1069483A (en) |
| CH (1) | CH618663A5 (en) |
| DE (1) | DE2739460C2 (en) |
| FR (1) | FR2365512A1 (en) |
| GB (1) | GB1583097A (en) |
| IN (1) | IN148112B (en) |
| IT (1) | IT1083498B (en) |
| MX (1) | MX145342A (en) |
| NL (1) | NL7710517A (en) |
| PT (1) | PT67078B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL262823A (en) * | 1960-04-04 | |||
| DE1257374B (en) * | 1963-06-20 | 1967-12-28 | Schuller Gmbh Glaswerk | Method and device for the continuous winding of fiber ribbons from glass staple fibers |
| US3279709A (en) * | 1963-11-18 | 1966-10-18 | Gustin Bacon Mfg Co | Textile fiber winder |
| DE2225463A1 (en) * | 1972-05-25 | 1973-12-06 | Bendix Corp | Textile fluid jet cutter - nozzle geometry permitting formation of long lasting coherent cutting jet |
| US3978748A (en) * | 1974-11-25 | 1976-09-07 | Camsco, Inc. | Fluid jet cutting system |
-
1976
- 1976-09-28 JP JP11615776A patent/JPS5341519A/en active Granted
-
1977
- 1977-08-16 GB GB34358/77A patent/GB1583097A/en not_active Expired
- 1977-08-23 CH CH1030177A patent/CH618663A5/en not_active IP Right Cessation
- 1977-08-24 IN IN1325/CAL/77A patent/IN148112B/en unknown
- 1977-08-30 IT IT50817/77A patent/IT1083498B/en active
- 1977-09-01 DE DE2739460A patent/DE2739460C2/en not_active Expired
- 1977-09-15 CA CA286,786A patent/CA1069483A/en not_active Expired
- 1977-09-26 PT PT67078A patent/PT67078B/en unknown
- 1977-09-26 BE BE181199A patent/BE859052A/en not_active IP Right Cessation
- 1977-09-26 BR BR7706382A patent/BR7706382A/en unknown
- 1977-09-27 NL NL7710517A patent/NL7710517A/en not_active Application Discontinuation
- 1977-09-27 MX MX170722A patent/MX145342A/en unknown
- 1977-09-28 FR FR7729200A patent/FR2365512A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2739460C2 (en) | 1984-03-08 |
| BR7706382A (en) | 1978-05-09 |
| JPS5341248B2 (en) | 1978-11-01 |
| PT67078A (en) | 1977-10-01 |
| DE2739460A1 (en) | 1978-03-30 |
| GB1583097A (en) | 1981-01-21 |
| JPS5341519A (en) | 1978-04-15 |
| MX145342A (en) | 1982-01-27 |
| IN148112B (en) | 1980-10-25 |
| BE859052A (en) | 1978-01-16 |
| PT67078B (en) | 1979-02-22 |
| CH618663A5 (en) | 1980-08-15 |
| FR2365512A1 (en) | 1978-04-21 |
| IT1083498B (en) | 1985-05-21 |
| FR2365512B1 (en) | 1981-03-20 |
| NL7710517A (en) | 1978-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |