US3863432A - Apparatus for taking out cakes from centrifugal spinning units - Google Patents

Apparatus for taking out cakes from centrifugal spinning units Download PDF

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Publication number
US3863432A
US3863432A US416509A US41650973A US3863432A US 3863432 A US3863432 A US 3863432A US 416509 A US416509 A US 416509A US 41650973 A US41650973 A US 41650973A US 3863432 A US3863432 A US 3863432A
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Prior art keywords
cake
belt
gripper
pot
spinning
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Expired - Lifetime
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US416509A
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English (en)
Inventor
Akihiro Isobe
Takeshi Iwasaki
Shigeo Katsuyama
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Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
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Asahi Chemical Industry Co Ltd
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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
    • D01D7/00—Collecting the newly-spun products
    • D01D7/02—Collecting the newly-spun products in centrifugal spinning pots

Definitions

  • the unit comprises first and second belts which are horizontally separated from one another and each respectively mounted at one end on first and second powered drums. Each of the belts projects downward through separate slit guides disposed respectively below the powered drum. An operating bar is disposed below the slit guides and a resilient bag-type gripper for removing a cake from a spinning pot pivotally suspended at one end thereof. The other end of the first belt is pivotally attached at an intermediate point between the ends of the operating bar and the other end of the other belt is attached at the end of the bar remote from the gripper means.
  • the gripper is adapted to be maintained in a position of vertical alignment with the axis of the spinning pot immediately prior to beginning removal of a cake from the pot.
  • This invention relates to improvements in and relating to an apparatus for automatic removal of rayon cake from a spinning pot of a centrifugal spinning unit, preferably in a number of similar spinning units and in unison with each other.
  • this kind of cake removal machine comprises a carriage mounted movably along and outside the common machine frame of a number of, say 100, spinning units arranged into a group in a row, and said carriage is provided with an expandable and contractable elongated arm which is fitted at its free end with a cake gripper adapted for catching the cake in the pot upon extending the arm and for taking out it therefrom by contracting the extended arm for conveying the cake outside of the spinning unit.
  • this cake removal job is repeated successively one after another of the spinning units consisting of the group.
  • the centrifugal rayon spinning unit is provided with an insulating door means for the prevention of escape of developed irritative waste gases from inside of the occupying space of the spinning unit to the working environment in the factory housing several to twenty or more spinning unit groups of the above kind.
  • the above kind of carriage type cake removal machine it is a highly troublesome and time-consuming operation to open and close the insulating door for each cake removal job which is carried out generally before and after this job, respectively. Waste and unhealthy gases will escape, therefore, during the door-opening periods, into the working factory environment which is thus contaminated (gradually with increased concentration of such waste gases as the spinning process proceeds, inviting thereby a serious sanitary and safety problem.
  • the frequently repeated cake removal job represents a very low operational efficiency, as was referred to hereinbefore, by virtue of the single piece take-up for each cake removal operation.
  • the main object of the present invention is to provide a cake removal apparatus devoid of the aforementioned conventional drawbacks and preferably capable of performing an automatic cake removal simultaneously of all the cakes from the spinning pots of a large number of centrifugal spinning units at a high operational efficiency without leakage of the unhealthy irritative waste gases.
  • a first belt is rotatably mounted on and suspended adjustably from a first drum through a limited first stationary slit guide, which drum may be driven in both directions by a first device motor.
  • a second belt is rotatably mounted on and suspended adjustably from a second drum, through a limited second stationary slit guide, which drum may be driven in both directions by a second drive motor.
  • the second belt called cake drawing-out belt, is attached at its free end to an operating bar at an intermediate point between the both ends thereof, said bar having pivotably suspended at its one end an inflatable resilient bag type cake gripper, while the first belt, called drawing belt", is attached pivotably at its free end with said operating bar at the opposite end or at a close proximity thereto.
  • the cake gripper is adapted for being kept in vertical alignment with the axis of a spinning pot directly before commencement of the cake removal job.
  • At least one complete unit including belts, operating bar and gripper for each of a number of spinning units grouped in line one after another.
  • FIG. 1 is a schematic cross-section of a cake removal unit for one of a number of centrifugal spinning units, said cake removal unit being shown at its operational stage directly before performing its cake removal job from a spinning pot.
  • FIG. 2 is an enlarged perspective view of several working constituent parts of the cake removal unit according to this invention shown in FIG. 1.
  • FIG. 3 is a similar view to FIG. 1, showing two intermediate stages illustrated in full line and in chaindotted line, as appearing during the cake removal operation.
  • FIG. 4 is a similar view to FIGS. 1 and 2, showing the off-service position of the cake removal unit.
  • FIG. 5 is a timing chart showing operational sequence of several working parts employed.
  • FIG. 6 is a schematic perspective view of a control cam assembly adapted for sequence control of the drive motors and electromagnetic valves employed.
  • FIGS. 7 and 8 are enlarged detail views of two representative constituent cams selected from the cam packet shown in FIG. 6.
  • FIGS. 9 and 10 are schematic connection diagrams of two embodiments of the pneumatic piping arrangement adapted for expanding and contacting a main cake gripper and an auxiliary pot cover gripper.
  • FIG. 11 is a partially sectioned elevation of the auxiliary gripper for catching and releasing the pot cover.
  • numeral 1 represents a first or drawing belt; 2 denotes a second or cake taking-out belt; 3 an operating bar; 4 a cake gripper; 5 a spinning pot and 6 a cake table which preferably may be a conveyor belt, when necessary.
  • Second belt 2 is wound on a drum l2 and suspended vertically therefrom through a stationary slit guide 11 which is provided in proximity to an upper godet roll 71 mounted on a common machine frame 7, being only shown partially and in its schematic outline, of a number of spinning units, not shown.
  • Said slit guide 11 is arranged substantially in a vertical alignment with the pot belonging to the related one of the spinning units.
  • the lower end of the second belt 2 is pivotably connected at 31 to the operating bar 3 at an intermediate point between the both end extremities thereof, as shown more specifically in FIG. 2. From one end of the operating bar 3, the cake gripper 4 is pivotably suspended at 33.
  • An elongated cake table 6 extending perpendicularly to the drawing paper of FIG. 1 for the whole length of the common machine frame 7 is fixedly mounted on a bottom deck 72 made integral therewith.
  • first belt 1 depends through a second slit guide 121 formed at an upper and lateral deck 100 to the opposite end of the operating bar 3 and pivotably attached thereto at 32, as clearly be seen in FIGS. 1 and 2.
  • Drums l2 and 22 are rotatably mounted respectively on pedestals 12a and 22a rigidly supported on the lateral deck 100.
  • Reversible electric motors 14 and 24, only schematically shown and mounted on the same deck 100 are arranged to drive the drums l2 and 22, respectively, through respective transmission belts l3 and 23.
  • the operating bar 3 can be lowered and elevated as desired, as well as shifted laterally in the horizontal direction in FIG. 1, by the combination of forward and backward drive of the both electric motors.
  • related constituents thereof are so designed and arranged that the longitudinal axis of cake gripper 4 coincides with that of pot 5 when the former is brought into its position directly in advance of performing the cake take-out.
  • the cake gripper 4 comprises an elongated hollow resilient bag tube 43 made preferably of rubber and pneumatically expandable and contractable at the will of the operator.
  • This bag tube 43 is fitted with a metal head 41 which is pivotably attached at 33, as described hereinbefore.
  • this metal head 41 is hollow and the interior space thereof is kept in fluid communication with the interior of the bag tube 43.
  • the metal head 41 is provided rigidly with an air supply and discharge socket 42 which communicates through a flexible piping 42a and a control valve, not shown, with a pressure air supply source, preferably an air reservoir, again not shown, and open atmosphere.
  • first slit guide 11 is so selected as to retain suspension of belt 2 near the godet roll.
  • a proper weight mass 34 is attached thereto.
  • the true weight of this mass 34 is so selected that it influences in combination with the weight of slackened first belt 1 substantially counter balancing the cake gripper 4, so as to keep the bar 3 in an inclined position in space around the suspension pin 31 when the whole arrangement is kept at its position shown in FIG. 1.
  • the same effect can be realized without use of the balancing weight mass 34 by adopting a longer length of the right-hand upwardly inclined half of the bar 3.
  • the length of first belt 1 can be adjusted, so as to attain a proper dead weight of the slackened belt 1 for attaining the same counter balancing effect.
  • the slit guide 121 is positioned so that when the second belt 2 has been slackened and instead the first belt 1 is suspended in its tightened state, the cake gripper 4 inclines vertically towards the center of the cake table 6. Or in the words, second slit guide 121 vertically aligns with the center of cake table 6. This mutual relationship is shown clearly seen from FIG. 3 when the first belt 1 and cake gripper 4 are observed in their full line positioned. In this way, a gripped cake can be carried to the upper surface of the table 6 under gravity action, as will be more fully described hereinafter.
  • FIG. 4 shows the position of the apparatus at the starting time point of the spinning operation.
  • the pot 5 is emptied and a cake 8 taken out by means of the foregoing cake removal operation stage and deposited on the cake table 6.
  • the gripper 4 is positioned in close proximity to and directly below the second slit guide 21 by winding up the first belt 1 properly by driving the related motor 24 in one direction, while the second belt 2 is kept in its properly slackened state by driving the related motor 14 in one direction. This is applied to all the spinning units and their respective cake removal apparatuses, not shown. Operating bar 3 is kept at its suspended vertical position.
  • a timer or its equivalent means operates to instruct the initiation of the simultaneous cake removal operation.
  • the related motor 24 is caused to rotate in the opposite direction, so as to lower the first belt 1 from its position shown in FIG. 4, while the other motor 14 is caused to rotate gradually in the opposite direction relative to the first motor 24, so as to take up the slack of a second belt 2, so as to avoid any contact of the bar 3 with part of machine frame.
  • the main parts 1, 2, 3 and 4 of the apparatus are brought from the position shown in FIG. 4 to that illustrated in FIG. 1 upon newly lowering second belt 2 by driving its drive motor 14 properly.
  • the second belt 2 is further flowered, while the first belt 1 is kept at its slightly slackened state, by driving the both motors 14 and 24 properly, until the cake gripper 4 with bag tube 43 contracted will have been introduced into the central empty core of the cake 8 in pot 5.
  • a further timer or its equivalent means operates, so as to actuate a related control valve, not shown, for introducing air pressure into the bag tube through a flexible piping provided therefor.
  • This piping although not shown, can be arranged along the first or second belt, as desired.
  • a third timer or its equivalent means operates to drive the motor 14, so as to take up gradually the second belt 2.
  • a fourth timer or its equivalent means When the cake 8 is disengaged from the pot 5, a fourth timer or its equivalent means operates and the first belt 1 is taken up at a slightly higher speed than the second belt, thereby initiating and continuing a lateral shift of the operating bar 3 in the right-hand direction in FIG. 1.
  • the bar 3 is brought gradually from its inclined position into its upright one.
  • the vertically and commonly suspended bar-andgripper combination 3-4 carrying the cake will be brought into vertical registration with the center of cake table and at a small distance therefrom.
  • the first belt is lowered while the second belt is kept in its slackened position, until the cake 8 is mounted on cake table 6.
  • both belts l and 2 are kept in their respective tightened position, a fluctuation in their suspended position of the whole mass of constituent members 3, 4 and 8 can be effectively prevented. Therefore, there is no delay for termination of pendulum movement of the suspended mass thereby improving the working efficiency.
  • a fifth timer or the like means operates for actuation of the air supply control valve which may preferably be a three way valve, so as to discharge the inflating air from bag tube 43 for disengagement from the cake.
  • the air supply control valve which may preferably be a three way valve, so as to discharge the inflating air from bag tube 43 for disengagement from the cake.
  • the belts l and 2 and operating bar 3 and cake gripper 4 are arranged equally in the similar way to each of the whole contained spinning units or pots 5, in series one after another and in line, as was hinted hereinbefore.
  • two elongated common drums may be used, so as to deliver and take up all the first belts and the second belts from and on the respective drums.
  • all the operating bars for spinning units can perform simultaneously the necessary up-and-down and lateral movements for performing the cake removal job for all the spinning units thereby avoiding conventionally employed successive cake take-ups means.
  • On-off and forward and reverse control of the drive motors l4 and 24 and the running period and running speed thereof and on-off operation of the control valves for supply and discharge of pressure air to and from the bag tubes 43 of all the cake grippers 4 can be performed from a centralized control panel, not shown.
  • Each of the first and second belts l and 2 can be made from a slightly rigid synthetic resin or synthetic rubber.
  • the width of each of these flat belts may preferably be at least 30 mm.
  • two elongated parallel bars 15 and 15' may be arranged at a small mutual distance and so as to extend for the whole longitudinal length of the machine frame.
  • These slit forming bars l5; 15 are fixedly attached to the machine frame 7 by means of pairs of attaching pieces which are preferably so arranged that each of the pairs defines both side extremities of the belt guide slit, as schematically shown in FIG. 2, although the attaching means have been omitted from the drawing for simplicity.
  • FIGS. 1, 3 and 4 an embodiment is shown in each of FIGS. 1, 3 and 4 in the form ofa cake table which can be, however, replaced by a conveyor belt, although not shown, which extends a small distance from inside to outside of the machine frame 7 for conveying the taken-out cakes to a reservoir.
  • a small opening must also be provided in the end wall, not shown, of the machine frame for carrying them from inside of the frame.
  • the opening area provided for this purpose may be very small in comparison with the total sum of the opening areas of the protecting and insulating doors as at 9, thus essentially no harmful effect results.
  • both drive motors l4 and 24 are energized to rotate for 8.5 10 seconds and 28 seconds, respectively, so as to lower the front belt 1 and to take up the slack of rear belt 2.
  • the gripper 4 is at first brought to a slightly higher level than and into vertical registration with the axis of the pot 5.
  • rear belt 2 is also lowered by energization of its drive motor 14 for 4 5.5 seconds for lowering the thus centered gripper into the idle core of cake 8.
  • drive motor 14 is energized for about 6 seconds, so as to elevate rear belt 2 a little while.
  • drive motor 24 is energized for about 4 seconds for taking up its slack.
  • drive motor 24 is again energized for about 5 seconds to tighten the front belt.
  • second drive motor 24 is energized for about 5 seconds, so as to elevate the front belt 1. Slightly before termination of this operation, drive motor 14 is energized for about 6 seconds,
  • the third step for elevation and lateral return shift of the cake gripper is initiated.
  • drive motor 24 is energized for about 5 seconds so as to elevate the gripper 4, correspondingly.
  • drive motor 14 is energized for about 6 seconds for return shifting of the cake gripper correctly upon the pot 5.
  • drive motors 24 and 14 are energized for 14 and 8 seconds upon different idle periods as shown, so as to lower the gripper carrying the pot cover to bring the latter in position relative to the pot proper.
  • electromagnetic valve not shown, is denergized for driving pneumatically the piston at 39 in the auxiliary air cylinder unit 40 to travel rightwards in FIG. 1 thereby an auxiliary gripper being released for bringing the pot cover freely placed on the pot.
  • the fourth step for elevating and lateral shift and re-elevating the gripper is initiated and the both drive motors are energized as shown in the lowermost part of FIG. 7.
  • the gripper is brought to its off-service position shown in FIG. 4.
  • an endless belt can be employed. Furthermore, this belt means can be arranged as a whole into an up-anddown mode, so as to bring it to its elevated off-service position which is described at 6' in FIG. 1.
  • a control cam packet shown in FIG. 6 can be used.
  • numeral 17 represents only schematically a cam motor having an elongated motor shaft 17a acting as a cam shaft as shown. This motor, when energized, performs a revolution per about 2 minutes.
  • the shaft 17a carries rigidly several control cams 18-21, 122.
  • First and second earns 18 and 19 control the sequence of rise and down movements of the first front belt 1, respectively.
  • third and fourth cams 20 and 21 control the sequence of rise and down movements of the second or rear belt 2.
  • cam 18 is provided with four radial projections 18a 18a for interruption of light passage to photo-cell 18e.
  • an electromagnetic switch is shown, is made on so as to connect l 2 phases of a three phase A.C. current source to the first belt drive motor 24 so as to drive the latter in its forward rotational direction for elevating the first or front belt 1.
  • the motor 24 is kept stationary.
  • the said projections 18a 18d correspond 4, 5, 5- and 28 seconds down-going stages of this belt.
  • cam 19 controls the downward movements of first or front belt 1, and is formed with three radial projections 19a 190 corresponding to three downward stages extending for 28-, 3- and l 1 secondlowering periods shown in the sequence chart of FIG. 5, respectively.
  • a photo-electric cell 19d is also provided for the same purpose as before, for cooperation with these projections 19a 190 for energization of the second belt drive motor 14.
  • cams 20 and 21 are arranged in the similar way with the foregoing cams l8 and 19, for control of the up-going and down-going motions of the second or rear belt 2 by properly driving the related drive motor 14 in accordance with the sequence chart shown in FIG. 5, although the respective cam configurations have been omitted from the drawing only for simplicity.
  • These cams 20 and 21 cooperate with respective photoelectric cells 20a and 21a, respectively, in the same manner as before.
  • the final cam 122 is a stopping cam for stopping the rotation of the cam motor 17 upon the completion of one cycle of the cake removal operation for the prevention of undesired repetition for an empty cake removal operation.
  • This signal can be utilized for simultaneous energization of an electromagnetic switch, not shown, for allowing the regular spinning operation of all the spinning units S1 S by starting respective pot motors representatively shown at 5a.
  • the stop cam 122 is formed with a single radial projection 122a which is adapted for cooperation with an attributed photo-electric cell 122b.
  • the above cam packet with cam motor 17 is mounted on for control panel 23 on which a control electric circuit, not shown, is provided for being controlled by the said several cams 18 21, 122.
  • FIG. 2 For the inflation and contraction of the bag tube 43, FIG. 2, a pneumatic piping system is provided as shown in FIG. 9, starting from an air reservoir 123, only schematically shown by a rectangular block.
  • This piping system comprises a pipe 25a, a junction 26, a pipe 27, a three ports type electro-magnetic valve unit MV1 which is also only schematically shown.
  • This valve unit MV1 has an inlet port 28, an outlet port 29 from which a further piping system having numerous branch pipes 32a, 32b, 32c extends, and a discharge port 30. These branch pipes extend to the bag tubes of all the spinning units S1 S100, although not specifically shown.
  • pipe 25b extends to inlet port 42 of a four port electro-magnetic valve MV2 which has in-and-outlet ports 143 and 44 and a discharge port 45.
  • a further piping system 132 extends which comprises a large number of flexible branch pipes for operating the double-acting type auxiliary piston-cylinder units as at 40, of all the spinning units S1 and S100.
  • the spinning pot is fitted with a detachable cover.
  • the cake gripper is fitted with an expandable jaw elements 133 and 134 which are pivotably mounted on the cake gripper at 133a and 134a, respectively as shown schematically in FIG. 11, although in the foregoing drawings, they have been ommitted for simplicity.
  • These jaws are linked through connecting links 135 and 136 with an operating bar 37 rigidly connected with piston rod 38 of a double-acting pneumatic piston slidably mounted in the auxiliary cylinder 40.
  • these jaws are shown in their expanded position for gripping the pot cover shown at 141.
  • This pot cover 141 is of the known centrifugally expandable type having an expandable spring crip 141a. When the pot cover is placed on the pot when the latter is stationary, or the during removing and transporting period, shown in FIG. 11, the spring crip 141a is in its contracted position by its own inwardly directing resilient force.
  • the spring crip 141a When, however, the pot cover is placed on top of the pot and the latter is brought into running at a high speed, say, 7,000 r.p.m., the spring crip 141a will centrifugally expand and is brought into engagement with a circular groove formed on the upper part of the inside wall of the pot for establishing a positive and reliable connection between the cover and the pot proper for avoiding occasional and dangerous disengagement of the former from the latter in the course of the operational running of the pot.
  • the auxiliary pneumatic cylinder 40 is also shown in FIGS. 9 and 10.
  • the auxiliary cylinder 40 is of the double-acting type, and when its piston 39 is lowered in FIG. 11, the jaws 133 and 134 are caused to contract for disengagement thereof from the pot cover.
  • piping 25b as an extension of that denoted 25a from the junction 26 leads to inlet port 142 of the electromagnetic valve MV2 having further, two in-andoutlet ports 143 and 144 and a discharge port 145 for operational control of the double-acting type auxiliary cylinder 40 as was referred to hereinbefore.
  • auxiliary electromagnetic valve MV2 is energized, thereby pressurized air is delivered from first outlet port 143 thereof for bringing the piston 39 at its upper position shown in FIG. 11, thereby cripping jaws 133 and 134 are expanded for gripping the pot cover, as was referred to hereinbefore in connection with FIG. 11.
  • the exhaust air from the cylinder 40 is discharged through discharge port 145 to the atmosphere.
  • valve MV2 When the valve MV2 is de-energized, pressure air is delivered through second outlet port 144 to the opposite side of piston 39, thereby the latter being caused to lower for contracting the expanded jaws 133; 134 so as to release the pot cover 141 therefrom. In this case, the exhaust air is discharged from the cylinder 40 through discharge port 145, as before.
  • FIG. 10 a slight modification from the arrangement shown in FIG. 9 is illustrated. In this case, the
  • main magnetic valve MVl has been replaced by a four port one MVI, having inlet 28, outlets 29' and 29 and discharge port 30 for operating an expandable and contractable jaw or pad type gripper which is not shown in the drawings on account of easy occurence to any person skilled in the art from consideration of the foregoing description of FIGS. 9 and 11.
  • This operation is naturally carried out simultaneously in all of the spinning units 51 5100. This fact applies naturally to the case of FIG. 9.
  • a cake removal unit in a centrifugal spinning set comprising in combination:
  • first and second belts horizontally separated from one another and each respectively mounted at one end on first and second powered drum means; each of said first and second belts projecting downward through separate slit guides each disposed respectively below said first and second powered drum means;
  • said operating bar having the other end of said first belt pivotally attached at an intermediate point between its ends and having the other end of said second belt attached at the end thereof remote from said gripper means;
  • said gripper means being further adapted to be maintained in a position of vertical alignment with the axis of said spinning pot immediately prior to beginning removal of a cake from said pot.
  • the cake removal unit of claim 1 which further includes means for receiving the cake removed by the gripper means from said spinning pot.
  • the cake removal unit of claim 1 which further includes automatic separating control means for operating said unit operatively attached thereto.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Centrifugal Separators (AREA)
US416509A 1972-11-18 1973-11-16 Apparatus for taking out cakes from centrifugal spinning units Expired - Lifetime US3863432A (en)

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Application Number Priority Date Filing Date Title
JP47115845A JPS5218288B2 (ja) 1972-11-18 1972-11-18

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US3863432A true US3863432A (en) 1975-02-04

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US416509A Expired - Lifetime US3863432A (en) 1972-11-18 1973-11-16 Apparatus for taking out cakes from centrifugal spinning units

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US (1) US3863432A (ja)
JP (1) JPS5218288B2 (ja)
DD (1) DD109895A5 (ja)
GB (1) GB1397227A (ja)
IT (1) IT997601B (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527002A1 (de) * 1995-07-24 1997-01-30 Chemnitzer Spinnereimaschinen Zentrierfugenspinnmaschine
DE19548674A1 (de) * 1995-12-23 1997-06-26 Csm Gmbh Doffverfahren

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53119390A (en) * 1977-03-24 1978-10-18 Toshihiko Fujitani Printing machine for screen pattern
JPS54143304A (en) * 1978-04-27 1979-11-08 Dainippon Screen Mfg Original plate holder for plate making machine
JPS58108461U (ja) * 1982-10-28 1983-07-23 大日本スクリ−ン製造株式会社 殖版機の原版ホルダ−
SE460659B (sv) * 1987-08-27 1989-11-06 Svecia Silkscreen Maskiner Ab Anordning foer att automatiskt och i tur och ordning kunna framstaella ett antal tryckformar
WO2018061932A1 (ja) 2016-09-30 2018-04-05 株式会社アルバック 電源装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427373A (en) * 1945-03-31 1947-09-16 American Viscose Corp Artificial fiber spinning machine
US2450622A (en) * 1945-12-17 1948-10-05 Prince Smith & Stelis Ltd Centrifugal spinning, twisting, and analogous machine
US3340685A (en) * 1964-12-24 1967-09-12 Brevets Aero Mecaniques Centrifugal yarn spinning mechanism
US3434272A (en) * 1967-05-27 1969-03-25 Kuraray Co Doffing arrangement for centrifugal spinning system
US3475891A (en) * 1962-10-11 1969-11-04 Asahi Chemical Ind Method of and apparatus for doffing yarns in the centrifugal pot spinning process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427373A (en) * 1945-03-31 1947-09-16 American Viscose Corp Artificial fiber spinning machine
US2450622A (en) * 1945-12-17 1948-10-05 Prince Smith & Stelis Ltd Centrifugal spinning, twisting, and analogous machine
US3475891A (en) * 1962-10-11 1969-11-04 Asahi Chemical Ind Method of and apparatus for doffing yarns in the centrifugal pot spinning process
US3340685A (en) * 1964-12-24 1967-09-12 Brevets Aero Mecaniques Centrifugal yarn spinning mechanism
US3434272A (en) * 1967-05-27 1969-03-25 Kuraray Co Doffing arrangement for centrifugal spinning system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527002A1 (de) * 1995-07-24 1997-01-30 Chemnitzer Spinnereimaschinen Zentrierfugenspinnmaschine
DE19548674A1 (de) * 1995-12-23 1997-06-26 Csm Gmbh Doffverfahren

Also Published As

Publication number Publication date
DD109895A5 (ja) 1974-11-20
IT997601B (it) 1975-12-30
GB1397227A (en) 1975-06-11
JPS4972411A (ja) 1974-07-12
DE2357884B2 (de) 1976-05-20
DE2357884A1 (de) 1974-05-22
JPS5218288B2 (ja) 1977-05-20

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