EP2837717A1 - Cleaner for fiber bundle feeder in fore-spinning frame - Google Patents
Cleaner for fiber bundle feeder in fore-spinning frame Download PDFInfo
- Publication number
- EP2837717A1 EP2837717A1 EP14179626.8A EP14179626A EP2837717A1 EP 2837717 A1 EP2837717 A1 EP 2837717A1 EP 14179626 A EP14179626 A EP 14179626A EP 2837717 A1 EP2837717 A1 EP 2837717A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubular
- clearer
- top roller
- roller
- cleaner
- 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.)
- Withdrawn
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G19/00—Combing machines
- D01G19/06—Details
- D01G19/22—Arrangements for removing, or disposing of, noil or waste
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
- D01H5/64—Rollers or aprons with cleaning surfaces
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G19/00—Combing machines
- D01G19/06—Details
- D01G19/08—Feeding apparatus
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G19/00—Combing machines
- D01G19/06—Details
- D01G19/14—Drawing-off and delivery apparatus
- D01G19/18—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G19/00—Combing machines
- D01G19/06—Details
- D01G19/28—Air draught or like pneumatic arrangements
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H11/00—Arrangements for confining or removing dust, fly or the like
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
- D01H5/64—Rollers or aprons with cleaning surfaces
- D01H5/645—Rollers or aprons with cleaning surfaces in cooperation with suction or blowing means
Definitions
- the present invention relates to a cleaner for a fiber bundle feeder in a fore-spinning frame. More particularly, the present invention relates to a cleaner for a fiber bundle feeder in a fore-spinning frame used in fore-spinning processes such as a drawing frame, a comber, a carding machine, and a lap former.
- a drafting unit In a drawing frame and a comber, a drafting unit simultaneously drafts a plurality of slivers.
- the drafted wide fiber bundles (laps) are delivered from the front rollers as fleece strips.
- the fleece strips are then bundled into a single sliver by a gatherer and retained in a can by a coiler.
- a drafting unit In a lap former, a drafting unit simultaneously drafts a plurality of slivers, and the drafted fleece strips are overlapped to form a lap.
- a carding machine forms slivers from wide fiber bundles (webs) that are drafted by a drafting unit.
- a drafting unit of a spinning machine includes drafting rollers.
- Floating fibers and foreign matter (hereinafter also referred to as lint) that are not held between the drafting rollers tend to adhere to the drafting rollers. This attracts and adheres further fibers to the drafting rollers. As a result, the weight of the drafted slivers may vary and drafting may be hindered. Thus, a cleaner is used to clean the surfaces of the drafting rollers so that floating fibers do not adhere to the drafting rollers.
- Japanese Unexamined Utility Model Publication No. 7-33981 describes an example of a cleaner for a drafting unit D of a drawing frame.
- the drafting unit D includes four pairs of draft rollers, which include four bottom rollers 61 a to 61d and four top rollers 62a to 62d.
- a turning roller 63 which serves as a top roller, is located at the downstream side of the top roller 62a, which is the most downstream one of the draft rollers.
- the turning roller 63 changes the moving direction of a sliver S from a generally horizontal direction to an obliquely downward direction.
- the cleaner of the '981 publication includes an Ermen's clearer E, which has a high cleaning capability, to clean the turning roller 63 and the top roller 62a.
- the cleaner further includes wiper bars 64. Each wiper bar 64 contacts and cleans the corresponding one of the top rollers 62b to 62d, which are located at the upstream side of the top roller 62a.
- the Ermen's clearer E includes an endless clothbelt (clearer) 71 and a comb 73.
- the clothbelt 71 intermittently rotates and removes fibers from the turning roller 63 and the top roller 62a.
- the comb 73 moves linearly in a reciprocal manner on the clothbelt 71.
- Each wiper bar 64 is supported by a holder (not shown) such that the wiper bar 64 is in contact with the corresponding one of the top rollers 62b to 62d under its own weight.
- the wiper bars 64 remove lint from the top rollers 62b to 62d.
- the fibers, which are scraped off from the clothbelt 71 by the comb 73, and the lint, which is removed from the rollers 62b to 62d by the wiper bars 64, are drawn into a suction head 75 through suction ports 75a.
- Japanese Laid-Open Patent Publication No. 2005-120561 describes a cleaner for an upper roller (top roller).
- the structure of the publication includes an air cylinder 81, which includes a piston rod (pressing rod) 81 a that presses an upper roller 82 against a lower roller 83.
- the cleaner includes a cleaning bar 84, one end of which is coupled to the piston rod 81 a.
- the piston rod 81 a includes an O ring that supports the cleaning bar 84.
- Japanese Unexamined Utility Model Publication No. 2-374 describes a rotating roller cleaner that removes adhered material, such as lint, dust, and short fibers from the surface of a rotating roller used in a spinning machine.
- the cleaner includes a clearer roller, which includes a roller body having a bristled circumferential surface, and support rods, which support opposite ends of the roller body.
- the axis of at least one of the support rods is eccentric with respect to the axis of the roller body.
- Each support rod is loosely fitted into a guide groove formed in a bracket and movable in the vertical direction in the guide groove.
- the guide groove has a width that is slightly larger than the diameter of the support rod. This limits horizontal movement of the clearer roller.
- the support rods are separated from each other by 180 degrees in the circumferential direction. This slightly varies the area of contact between the rotating roller and the clearer roller and slightly varies the speed of the clearer roller relative to the rotating roller at the area of contact. Thus, the clearer roller is rubbed against the surface of the rotating roller.
- the cleaner of the publication '981 which uses a clothbelt, efficiently cleans the turning roller and a top roller.
- a complicated structure is needed to scrape off fibers from the clothbelt.
- the wiper bar that removes lint from a top roller is in contact with the top roller under its own weight.
- the removed lint accumulates between the top roller and the wiper bar. This results in the need for periodic cleaning.
- the air cylinder allows the cleaning bar to move into and out of contact with the upper roller.
- the removed lint does not accumulate between the cleaning bar and the upper roller.
- a structure is needed to move the cleaning bar into and out of contact with the upper roller in a suitable manner. This enlarges the cleaner.
- the clearer roller includes a bristled portion.
- a clearer roller including a bristled portion is used to clean a top roller that moves laps and webs, fibers may become entangled in the bristled portion. Such fibers may be difficult to remove.
- one aspect of the present invention is a cleaner for a fiber bundle feeder in a fore-spinning frame.
- the fiber bundle feeder nips and discharges a strip of fiber bundle with a top roller and a bottom roller.
- the cleaner includes a support member located above the top roller and a tubular clearer having an inner diameter that is greater than an outer diameter of the support member.
- the tubular clearer is rotatable around the support member by the top roller such that the tubular clearer is located at a position where the tubular clearer is in contact with the top roller and a position where the tubular clearer is separated from the top roller.
- the tubular clearer is configured to block a fiber.
- a suction unit is configured to draw in the fiber that has been blocked by the tubular clearer.
- the comber is a fore-spinning frame used in a fore-spinning process.
- a drafting unit 10 drafts a plurality of slivers S supplied from a plurality of combing heads of a comber (not shown).
- the drafting unit 10 forms fleeces F, which are strips of fiber bundles, from the slivers S and discharges the fleeces F.
- the drafting unit 10 includes a front bottom roller 11, a middle bottom roller 12, and a rear bottom roller 13, which are supported by a roller stand (not shown).
- a front top roller 14, a middle top roller 15, and a rear top roller 16 are arranged above the front bottom roller 11, the middle bottom roller 12, and the rear bottom roller 13, respectively.
- a turning top roller 17 is arranged in front of the upper portion of the front bottom roller 11.
- the turning top roller 17 downwardly directs the fleece F delivered from the front bottom roller 11 and the front top roller 14.
- the drafting unit 10 has a 4-over-3 construction and functions as a fiber bundle feeder in a fore-spinning frame that nips and discharges strips of fiber bundles using top and bottom rollers.
- a gatherer 18 is arranged in front of the lower portion of the front bottom roller 11.
- a coiler trumpet 20 of a coiler is arranged below the gatherer 18, and two coiler calender rollers 21 are arranged below the coiler trumpet 20.
- the sliver S is downwardly moved from the gatherer 18 and recompressed by the coiler calender rollers 21.
- the recompressed sliver S is retained in a can using a tube wheel (not shown).
- a drafting unit cleaner 30 is arranged above the drafting unit 10 to clean the top rollers 14 to 17.
- the drafting unit cleaner 30 includes support members 31, tubular clearers 32, and a suction unit 33.
- Each support member 31 is arranged above the corresponding one of the top rollers 14 to 17.
- the inner diameter of the tubular clearers 32 is greater than the outer diameter of the support members 31.
- Each tubular clearer 32 intermittently contacts the corresponding one of top rollers 14 to 17 while rotating around the corresponding support member 31.
- the tubular clearer 32 also block fibers.
- the suction unit 33 draws in the fibers that have been blocked by the tubular clearer 32.
- each support member 31 includes a cylindrical bar body 31 a and projections 31b extending from opposite ends of the bar body 31 a.
- Each projection 31b has the shape of a quadrangular prism.
- Each support member 31 is parallel to the corresponding one of the top rollers 14 to 17.
- the projections 31b are fixed to frames 34 ( Fig. 2 ) so that the corresponding support member 31 is not rotatable.
- Each tubular clearer 32 is made of rubber and has an inner diameter that is greater than the outer diameter of the bar body 31 a.
- the tubular clearer 32 is rotatable around the bar body 31 a such that the tubular clearer 32 is located at a position where the outer surface of the tubular clearer 32 is partially in contact with the outer surface of the corresponding one of the top rollers 14 to 17 and a position where the outer surface of the tubular clearer 32 is separated from the corresponding one of the top rollers 14 to 17.
- the bar body 31 a has an outer diameter of about 8 mm
- the tubular clearer 32 has an inner diameter of about 20 mm, for example.
- the suction unit 33 includes a suction head 35 located above the drafting unit 10.
- the suction head 35 includes suction ports 35a located at positions corresponding to the tubular clearers 32.
- the suction ports 35a extend along the tubular clearers 32.
- the drafting unit 10 is operated when the top rollers 14 to 17 are located at operational positions to cooperate with the bottom rollers 11 to 13 to draft the slivers S.
- the suction ports 35a of the suction head 35 face the tubular clearers 32.
- the bottom rollers 11 to 13 are driven at a draft ratio that is set in accordance with the spinning conditions.
- the slivers S which are drafted and enlarged by a predetermined rate, is delivered from the front bottom roller 11, the front top roller 14, and the turning top roller 17 as fleeces F.
- the fleeces F are bundled into a single sliver S when passing through the gatherer 18 and the coiler trumpet 20.
- the sliver S is re-compressed by the coiler calender rollers 21. Then, the sliver S is retained in a can through a tube wheel.
- the suction head 35 is arranged in the operational position as shown in Fig. 1A .
- the suction head 35 is held such that the suction ports 35a face the tubular clearers 32 and the suction effect of the suction source acts on the tubular clearers 32.
- the tubular clearers 32 rotate around the corresponding support members 31 above the top rollers 14 to 17. Further, the tubular clearers 32 intermittently contact the corresponding top rollers 14 to 17.
- tubular clearers 32 Referring to Figs. 3A and 3B , the operation of the tubular clearers 32 is now described using the tubular clearer 32 corresponding to the turning top roller 17 as an example.
- the tubular clearer 32 rotates together with the turning top roller 17 and oscillates moderately while rotating. Thus, the tubular clearer 32 repeatedly contacts the turning top roller 17 as shown in Fig. 3A and rises away from the turning top roller 17 as shown in Fig. 3B . As shown in Fig. 3A , when the tubular clearer 32 is in contact with the turning top roller 17, the tubular clearer 32 blocks the adherence of a fiber f to the turning top roller 17. The fiber f is separated from a strip of fiber bundle that is moved by the rotations of the turning top roller 17 and the bottom roller. As shown in Fig.
- the fiber f which has been blocked by the tubular clearer 32, is then drawn into the suction unit 33 when the tubular clearer 32 is separated from the turning top roller 17.
- the tubular clearer 32 blocks passage of a fiber between the tubular clearer 32 and the turning top roller 17 when the tubular clearer 32 contacts the turning top roller 17 and allows passage of the fiber between the tubular clearer 32 and the turning top roller 17 when the tubular clearer 32 is not in contact with the turning top roller 17.
- the tubular clearers 32 corresponding to the other top rollers 14 to 16 function in the same manner. Accordingly, the present embodiment effectively limits the adherence of fibers to the top rollers 14 to 17 with a simple structure.
- the tubular clearers 32 are basically maintenance-free and stabilize drafting. Further, sticky substances included in cotton, such as honeydew, does not adhere to the top rollers 14 to 17.
- the circumferential surfaces of the tubular clearers 32 may include frictional force variation structures that are arranged in random positions.
- the frictional force variation structures vary the frictional forces between the rotating tubular clearers 32 and the top rollers 14 to 17.
- the frictional force variation structures may be through holes 32a formed in the circumferential surfaces of the tubular clearers 32.
- the frictional force variation structures may be projections 32b formed on the circumferential surfaces of the tubular clearers 32.
- each tubular clearer 32 having the frictional force variation structures differs from the frictional force between the section of the tubular clearer 32 that do not includes the variation structures and the corresponding top roller.
- the tubular clearer 32 rotates irregularly. This allows fibers that have been blocked by the tubular clearers 23 in cooperation with the top rollers 14 to 17 to be easily separated from the top rollers 14 to 17.
- recesses may function as the frictional force variation structures. That is, the frictional force variation structures may be any openings formed in the tubular clearers 32.
- the material of the tubular clearer 32 is not limited to rubber.
- the tubular clearer 32 may be made of metal, paper, or plastic. If the frictional force on the surface of the tubular clearer 32 is insufficient, a surface treatment may be applied to the tubular clearer 32.
- the support member 31 is not limited to a structure in which a single bar extends through and supports the tubular clearer 32. As long as the tubular clearer 32 is rotatably supported, the support member 31 may have any structure. For example, the support member 31 may support the opposite ends of the tubular clearer 32.
- the material of the support member 31 is not limited to metal.
- the support member 31 may be made of other materials such as plastic, ceramic, or wood.
- the cross-section of the portion of the support member 31 that comes into contact with the tubular clearer 32 is not limited to circular.
- the cross-section may be polygonal.
- the drafting unit 10 does not have to include the turning top roller 17.
- the fiber bundle feeder is not limited to the one that forms a portion of a drafting device and may be any device that functions to deliver strips of fiber bundles.
- the fiber bundle feeder may include only one top roller and one bottom roller arranged on the delivery path of strips of fiber bundles.
- the suction ports 35a in the suction head 35 of the suction unit 33 may be located only at positions facing the front top roller 14 and the turning top roller 17 so that the suction effect of the suction unit 33 acts only on the areas corresponding to the front top roller 14 and the turning top roller 17. Adherence of floating fibers and fleeces tends to occur on the front top roller 14 and the turning top roller 17. Depending on the type of fiber that is drafted, drafting may be performed in a satisfactory manner without arranging a dedicated suction portion for each of the middle top roller 15 and the rear top roller 16.
- the tubular clearer 32 may be arranged only at a position facing the turning top roller 17 or only at positions facing the turning top roller 17 and the front top roller 14.
- Conventional cleaning devices such as wiper bars, may be arranged at positions corresponding to the middle top roller 15 and the rear top roller 16.
- the fore-spinning frame is not limited to a comber and may be any fore-spinning frame that includes a fiber bundle feeder, which nips and delivers strips of fiber bundles using top and bottom rollers.
- the present invention is applicable to drawing frames, lap formers, and cards, for example.
- the tubular clearer is rotatable around the support member by the top roller such that the tubular clearer is located at a position where the tubular clearer is in contact with the top roller and a position where the tubular clearer is separated from the top roller.
- the tubular clearer is configured to block a fiber.
- a suction unit is configured to draw in the fiber that has been blocked by the tubular clearer.
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
A cleaner (30) for a fiber bundle feeder (10), which nips and discharges a strip of fiber bundle with a top roller (14, 15, 16, 17) and a bottom roller (11, 12, 13), in a fore-spinning frame includes a support member (31) located above the top roller and a tubular clearer (32) having an inner diameter that is greater than an outer diameter of the support member. The tubular clearer is rotatable around the support member by the top roller such that the tubular clearer is located at a position where the tubular clearer is in contact with the top roller and a position where the tubular clearer is separated from the top roller. The tubular clearer is configured to block a fiber. A suction unit (33) is configured to draw in the fiber that has been blocked by the tubular clearer.
Description
- The present invention relates to a cleaner for a fiber bundle feeder in a fore-spinning frame. More particularly, the present invention relates to a cleaner for a fiber bundle feeder in a fore-spinning frame used in fore-spinning processes such as a drawing frame, a comber, a carding machine, and a lap former.
- In a drawing frame and a comber, a drafting unit simultaneously drafts a plurality of slivers. The drafted wide fiber bundles (laps) are delivered from the front rollers as fleece strips. The fleece strips are then bundled into a single sliver by a gatherer and retained in a can by a coiler. In a lap former, a drafting unit simultaneously drafts a plurality of slivers, and the drafted fleece strips are overlapped to form a lap. Further, a carding machine forms slivers from wide fiber bundles (webs) that are drafted by a drafting unit.
- A drafting unit of a spinning machine includes drafting rollers. Floating fibers and foreign matter (hereinafter also referred to as lint) that are not held between the drafting rollers tend to adhere to the drafting rollers. This attracts and adheres further fibers to the drafting rollers. As a result, the weight of the drafted slivers may vary and drafting may be hindered. Thus, a cleaner is used to clean the surfaces of the drafting rollers so that floating fibers do not adhere to the drafting rollers.
- Referring to
Fig. 5 , Japanese Unexamined Utility Model Publication No.7-33981 bottom rollers 61 a to 61d and fourtop rollers 62a to 62d. Aturning roller 63, which serves as a top roller, is located at the downstream side of thetop roller 62a, which is the most downstream one of the draft rollers. The turningroller 63 changes the moving direction of a sliver S from a generally horizontal direction to an obliquely downward direction. - In the drafting unit D, floating fibers tend to adhere to the
turning roller 63 and thetop roller 62a, which is located at the immediately upstream side of the turningroller 63. Thus, the cleaner of the '981 publication includes an Ermen's clearer E, which has a high cleaning capability, to clean the turningroller 63 and thetop roller 62a. The cleaner further includeswiper bars 64. Eachwiper bar 64 contacts and cleans the corresponding one of the top rollers 62b to 62d, which are located at the upstream side of thetop roller 62a. The Ermen's clearer E includes an endless clothbelt (clearer) 71 and acomb 73. Theclothbelt 71 intermittently rotates and removes fibers from the turningroller 63 and thetop roller 62a. Thecomb 73 moves linearly in a reciprocal manner on theclothbelt 71. Eachwiper bar 64 is supported by a holder (not shown) such that thewiper bar 64 is in contact with the corresponding one of the top rollers 62b to 62d under its own weight. Thewiper bars 64 remove lint from the top rollers 62b to 62d. The fibers, which are scraped off from theclothbelt 71 by thecomb 73, and the lint, which is removed from the rollers 62b to 62d by thewiper bars 64, are drawn into asuction head 75 throughsuction ports 75a. - Referring to
Fig. 6 , Japanese Laid-Open Patent Publication No.2005-120561 air cylinder 81, which includes a piston rod (pressing rod) 81 a that presses anupper roller 82 against alower roller 83. The cleaner includes acleaning bar 84, one end of which is coupled to thepiston rod 81 a. Thepiston rod 81 a includes an O ring that supports thecleaning bar 84. - Further, Japanese Unexamined Utility Model Publication No.
2-374 - The cleaner of the publication '981, which uses a clothbelt, efficiently cleans the turning roller and a top roller. However, a complicated structure is needed to scrape off fibers from the clothbelt. In addition, the wiper bar that removes lint from a top roller is in contact with the top roller under its own weight. Thus, the removed lint accumulates between the top roller and the wiper bar. This results in the need for periodic cleaning.
- In the cleaner of the '561 publication, the air cylinder allows the cleaning bar to move into and out of contact with the upper roller. Thus, unlike the wiper bar that is in contact with the top roller under its own weight, in the cleaner of the '561 publication, the removed lint does not accumulate between the cleaning bar and the upper roller. However, a structure is needed to move the cleaning bar into and out of contact with the upper roller in a suitable manner. This enlarges the cleaner.
- In the rotating roller cleaner of the '374 publication, the clearer roller includes a bristled portion. When such a clearer roller including a bristled portion is used to clean a top roller that moves laps and webs, fibers may become entangled in the bristled portion. Such fibers may be difficult to remove.
- It is an object of the present invention to provide a cleaner for a fiber bundle feeder in a fore-spinning frame that effectively limits adherence of fibers to a top roller with a simple structure.
- To achieve the above object, one aspect of the present invention is a cleaner for a fiber bundle feeder in a fore-spinning frame. The fiber bundle feeder nips and discharges a strip of fiber bundle with a top roller and a bottom roller. The cleaner includes a support member located above the top roller and a tubular clearer having an inner diameter that is greater than an outer diameter of the support member. The tubular clearer is rotatable around the support member by the top roller such that the tubular clearer is located at a position where the tubular clearer is in contact with the top roller and a position where the tubular clearer is separated from the top roller. The tubular clearer is configured to block a fiber.
- A suction unit is configured to draw in the fiber that has been blocked by the tubular clearer.
- Other aspects and advantages of the present invention will become apparent from the following description, taken in conjunction with the accompanying drawings, illustrating by way of example the principles of the invention.
- The invention, together with objects and advantages thereof, may best be understood by reference to the following description of the presently preferred embodiments together with the accompanying drawings in which:
-
Fig. 1A is a schematic partial cutaway view of a drafting unit of one embodiment; -
Fig. 1B is a partially enlarged view ofFig. 1A ; -
Fig. 2 is a partial cutaway plan view showing a turning top roller and a tubular clearer; -
Fig. 3A is a schematic view showing the operation of the tubular clearer; -
Fig. 3B is a schematic view showing the operation of the tubular clearer; -
Fig. 4A is a schematic perspective view showing a tubular clearer in another embodiment; -
Fig. 4B is a schematic perspective view showing a tubular clearer in a further embodiment; -
Fig. 5 is a side view showing background art; and -
Fig. 6 is a partially cross-sectional view showing other background art. - Referring to
Figs. 1A to 3 , a drafting unit of one embodiment used in a comber will now be described. The comber is a fore-spinning frame used in a fore-spinning process. - Referring to
Fig. 1A , a draftingunit 10 drafts a plurality of slivers S supplied from a plurality of combing heads of a comber (not shown). The draftingunit 10 forms fleeces F, which are strips of fiber bundles, from the slivers S and discharges the fleeces F. The draftingunit 10 includes a front bottom roller 11, amiddle bottom roller 12, and arear bottom roller 13, which are supported by a roller stand (not shown). A front top roller 14, a middletop roller 15, and a reartop roller 16 are arranged above the front bottom roller 11, themiddle bottom roller 12, and therear bottom roller 13, respectively. A turningtop roller 17 is arranged in front of the upper portion of the front bottom roller 11. The turningtop roller 17 downwardly directs the fleece F delivered from the front bottom roller 11 and the front top roller 14. The draftingunit 10 has a 4-over-3 construction and functions as a fiber bundle feeder in a fore-spinning frame that nips and discharges strips of fiber bundles using top and bottom rollers. - A
gatherer 18 is arranged in front of the lower portion of the front bottom roller 11. Acoiler trumpet 20 of a coiler is arranged below thegatherer 18, and twocoiler calender rollers 21 are arranged below thecoiler trumpet 20. The sliver S is downwardly moved from thegatherer 18 and recompressed by thecoiler calender rollers 21. The recompressed sliver S is retained in a can using a tube wheel (not shown). - A drafting unit cleaner 30 is arranged above the drafting
unit 10 to clean the top rollers 14 to 17. - As shown in
Fig. 1A , the drafting unit cleaner 30 includessupport members 31,tubular clearers 32, and asuction unit 33. Eachsupport member 31 is arranged above the corresponding one of the top rollers 14 to 17. The inner diameter of thetubular clearers 32 is greater than the outer diameter of thesupport members 31. Each tubular clearer 32 intermittently contacts the corresponding one of top rollers 14 to 17 while rotating around the correspondingsupport member 31. The tubular clearer 32 also block fibers. Thesuction unit 33 draws in the fibers that have been blocked by thetubular clearer 32. - As shown in
Figs. 1A, 1B and 2 , eachsupport member 31 includes a cylindrical bar body 31 a andprojections 31b extending from opposite ends of the bar body 31 a. Eachprojection 31b has the shape of a quadrangular prism. Eachsupport member 31 is parallel to the corresponding one of the top rollers 14 to 17. Theprojections 31b are fixed to frames 34 (Fig. 2 ) so that thecorresponding support member 31 is not rotatable. - Each tubular clearer 32 is made of rubber and has an inner diameter that is greater than the outer diameter of the bar body 31 a. The tubular clearer 32 is rotatable around the bar body 31 a such that the tubular clearer 32 is located at a position where the outer surface of the tubular clearer 32 is partially in contact with the outer surface of the corresponding one of the top rollers 14 to 17 and a position where the outer surface of the tubular clearer 32 is separated from the corresponding one of the top rollers 14 to 17. The bar body 31 a has an outer diameter of about 8 mm, and the tubular clearer 32 has an inner diameter of about 20 mm, for example.
- The
suction unit 33 includes asuction head 35 located above the draftingunit 10. Thesuction head 35 includessuction ports 35a located at positions corresponding to thetubular clearers 32. Thesuction ports 35a extend along thetubular clearers 32. - The operation of the drafting unit cleaner 30 will now be described.
- As shown in
Fig. 1A , the draftingunit 10 is operated when the top rollers 14 to 17 are located at operational positions to cooperate with the bottom rollers 11 to 13 to draft the slivers S. Under this situation, thesuction ports 35a of thesuction head 35 face thetubular clearers 32. The bottom rollers 11 to 13 are driven at a draft ratio that is set in accordance with the spinning conditions. The slivers S, which are drafted and enlarged by a predetermined rate, is delivered from the front bottom roller 11, the front top roller 14, and the turningtop roller 17 as fleeces F. The fleeces F are bundled into a single sliver S when passing through thegatherer 18 and thecoiler trumpet 20. The sliver S is re-compressed by thecoiler calender rollers 21. Then, the sliver S is retained in a can through a tube wheel. - During operation of the drafting
unit 10, thesuction head 35 is arranged in the operational position as shown inFig. 1A . Thesuction head 35 is held such that thesuction ports 35a face thetubular clearers 32 and the suction effect of the suction source acts on thetubular clearers 32. - When the top rollers 14 to 17 rotate, the
tubular clearers 32 rotate around the correspondingsupport members 31 above the top rollers 14 to 17. Further, thetubular clearers 32 intermittently contact the corresponding top rollers 14 to 17. - Referring to
Figs. 3A and 3B , the operation of thetubular clearers 32 is now described using the tubular clearer 32 corresponding to the turningtop roller 17 as an example. - The tubular clearer 32 rotates together with the turning
top roller 17 and oscillates moderately while rotating. Thus, the tubular clearer 32 repeatedly contacts the turningtop roller 17 as shown inFig. 3A and rises away from the turningtop roller 17 as shown inFig. 3B . As shown inFig. 3A , when the tubular clearer 32 is in contact with the turningtop roller 17, the tubular clearer 32 blocks the adherence of a fiber f to the turningtop roller 17. The fiber f is separated from a strip of fiber bundle that is moved by the rotations of the turningtop roller 17 and the bottom roller. As shown inFig. 3B , the fiber f, which has been blocked by thetubular clearer 32, is then drawn into thesuction unit 33 when the tubular clearer 32 is separated from the turningtop roller 17. In other words, the tubular clearer 32 blocks passage of a fiber between thetubular clearer 32 and the turningtop roller 17 when the tubular clearer 32 contacts the turningtop roller 17 and allows passage of the fiber between thetubular clearer 32 and the turningtop roller 17 when the tubular clearer 32 is not in contact with the turningtop roller 17. Thetubular clearers 32 corresponding to the other top rollers 14 to 16 function in the same manner. Accordingly, the present embodiment effectively limits the adherence of fibers to the top rollers 14 to 17 with a simple structure. Thus, fibers do not adhere to the top rollers 14 to 17 over a long period, and fibers do not collect on thetubular clearers 32. As a result, thetubular clearers 32 are basically maintenance-free and stabilize drafting. Further, sticky substances included in cotton, such as honeydew, does not adhere to the top rollers 14 to 17. - The advantages of the present embodiment will now be described.
- (1) The drafting unit cleaner 30 is a cleaner for a fiber bundle feeder in a fore-spinning frame that nips and feeds strips of fiber bundles using the top rollers 14 to 17 and the bottom rollers 11 to 13. The drafting unit cleaner 30 includes the
support members 31, thetubular clearers 32, and thesuction unit 33. Thesupport members 31 are located above the top rollers 14 to 17. Thetubular clearers 32 have an inner diameter that is greater than the outer diameter of thesupport members 31. Each tubular clearer 32 is rotatable around the correspondingsupport member 31 by the corresponding one of the top rollers 14 to 17 such that the tubular clearer 32 is located at a position where the tubular clearer 32 is in contact with the corresponding one of top rollers 14 to 17 and a position where the tubular clearer 32 is separated from the corresponding one of the top rollers 14 to 17. The tubular clearer 32 also block fibers. Thesuction unit 33 draws in the fibers that have been blocked by thetubular clearer 32. Thus, the present embodiment effectively limits the adherence of fibers to the top rollers 14 to 17 with a simple structure. Thus, fibers do not adhere to the top rollers 14 to 17 over a long period, and fibers do not collect on thetubular clearers 32. Further, a sticky substance included in cotton, such as honeydew, does not adhere to the top rollers 14 to 17. This allows the cleaning mechanism of the top rollers 14 to 17 to be maintenance-free. - (2) The
tubular clearers 32 are made of rubber. This allows thetubular clearers 32 to be lighter and produce an appropriate friction resistance with the top rollers 14 to 17 compared to when thetubular clearers 32 are made of metal, plastic, or paper. - (3) The
drafting unit 10, which functions as a fiber bundle feeder, includes a plurality of top rollers 14 to 17 including the turningtop roller 17. At least one of thetubular clearers 32 is arranged at a position corresponding to the turningtop roller 17. Not every fiber bundle feeder includes the turningtop roller 17, and some devices move a strip of fiber bundle generally in one direction. However, in a fiber bundle feeder including the turningtop roller 17, the turningtop roller 17 tends to attract floating fibers. The present embodiment effectively cleans the turningtop roller 17. - It should be apparent to those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention. Particularly, it should be understood that the present invention may be embodied in the following forms.
- The circumferential surfaces of the
tubular clearers 32 may include frictional force variation structures that are arranged in random positions. The frictional force variation structures vary the frictional forces between the rotatingtubular clearers 32 and the top rollers 14 to 17. For example, as shown inFig. 4A , the frictional force variation structures may be throughholes 32a formed in the circumferential surfaces of thetubular clearers 32. Further, as shown inFig. 4B , the frictional force variation structures may beprojections 32b formed on the circumferential surfaces of thetubular clearers 32. In each tubular clearer 32 having the frictional force variation structures, the frictional force between the section of the tubular clearer 32 that includes the frictional force variation structures and the corresponding one of the top rollers 14 to 17 differs from the frictional force between the section of the tubular clearer 32 that do not includes the variation structures and the corresponding top roller. Thus, the tubular clearer 32 rotates irregularly. This allows fibers that have been blocked by the tubular clearers 23 in cooperation with the top rollers 14 to 17 to be easily separated from the top rollers 14 to 17. - Instead of the through
holes 32a, recesses may function as the frictional force variation structures. That is, the frictional force variation structures may be any openings formed in thetubular clearers 32. - The material of the tubular clearer 32 is not limited to rubber. The tubular clearer 32 may be made of metal, paper, or plastic. If the frictional force on the surface of the tubular clearer 32 is insufficient, a surface treatment may be applied to the
tubular clearer 32. - The
support member 31 is not limited to a structure in which a single bar extends through and supports thetubular clearer 32. As long as the tubular clearer 32 is rotatably supported, thesupport member 31 may have any structure. For example, thesupport member 31 may support the opposite ends of thetubular clearer 32. - The material of the
support member 31 is not limited to metal. Thesupport member 31 may be made of other materials such as plastic, ceramic, or wood. - The cross-section of the portion of the
support member 31 that comes into contact with the tubular clearer 32 is not limited to circular. For example, the cross-section may be polygonal. - The drafting
unit 10 does not have to include the turningtop roller 17. - The fiber bundle feeder is not limited to the one that forms a portion of a drafting device and may be any device that functions to deliver strips of fiber bundles. For example, the fiber bundle feeder may include only one top roller and one bottom roller arranged on the delivery path of strips of fiber bundles.
- The
suction ports 35a in thesuction head 35 of thesuction unit 33 may be located only at positions facing the front top roller 14 and the turningtop roller 17 so that the suction effect of thesuction unit 33 acts only on the areas corresponding to the front top roller 14 and the turningtop roller 17. Adherence of floating fibers and fleeces tends to occur on the front top roller 14 and the turningtop roller 17. Depending on the type of fiber that is drafted, drafting may be performed in a satisfactory manner without arranging a dedicated suction portion for each of the middletop roller 15 and the reartop roller 16. - The tubular clearer 32 may be arranged only at a position facing the turning
top roller 17 or only at positions facing the turningtop roller 17 and the front top roller 14. Conventional cleaning devices, such as wiper bars, may be arranged at positions corresponding to the middletop roller 15 and the reartop roller 16. - The fore-spinning frame is not limited to a comber and may be any fore-spinning frame that includes a fiber bundle feeder, which nips and delivers strips of fiber bundles using top and bottom rollers. The present invention is applicable to drawing frames, lap formers, and cards, for example.
- The present examples and embodiments are to be considered as illustrative and not restrictive and the invention is not to be limited to the details given herein, but may be modified within the scope and equivalence of the appended claims.
- A cleaner for a fiber bundle feeder, which nips and discharges a strip of fiber bundle with a top roller and a bottom roller, in a fore-spinning frame includes a support member located above the top roller and a tubular clearer having an inner diameter that is greater than an outer diameter of the support member. The tubular clearer is rotatable around the support member by the top roller such that the tubular clearer is located at a position where the tubular clearer is in contact with the top roller and a position where the tubular clearer is separated from the top roller. The tubular clearer is configured to block a fiber. A suction unit is configured to draw in the fiber that has been blocked by the tubular clearer.
Claims (6)
- A cleaner (30) for a fiber bundle feeder (10) in a fore-spinning frame, wherein the fiber bundle feeder (10) nips and discharges a strip of fiber bundle with a top roller (14, 15, 16, 17) and a bottom roller (11, 12, 13),
the cleaner (30) being characterized by:a support member (31) located above the top roller (14, 15, 16, 17);a tubular clearer (32) having an inner diameter that is greater than an outer diameter of the support (31) member, wherein the tubular clearer (32) is rotatable around the support member (31) by the top roller (14, 15, 16, 17) such that the tubular clearer (32) is located at a position where the tubular clearer (32) is in contact with the top roller (14, 15, 16, 17) and a position where the tubular clearer (32) is separated from the top roller (14, 15, 16, 17), and the tubular clearer (32) is configured to block a fiber; anda suction unit (33) configured to draw in the fiber that has been blocked by the tubular clearer (32). - The cleaner (30) for a fiber bundle feeder (10) in a fore-spinning frame according to claim 1, wherein the tubular clearer (32) is made of rubber.
- The cleaner (30) for a fiber bundle feeder (10) in a fore-spinning frame according to claim 1 or 2, wherein
the top roller (14, 15, 16, 17) is one of a plurality of top rollers (14, 15, 16, 17) including a turning top roller (17), and
the tubular clearer (32) is arranged at a position corresponding to at least the turning top roller (17). - The cleaner (30) for a fiber bundle feeder (10) in a fore-spinning frame according to any one of claims 1 to 3, wherein
the tubular clearer (32) includes a circumferential surface including frictional force variation structures (32a, 32b) that are located in random positions, and
the frictional force variation structures (32a, 32b) are configured to vary frictional force between the tubular clearer (32) and the top roller (14, 15, 16, 17) during the rotation of the tubular clearer (32). - The cleaner (30) for a fiber bundle feeder (10) in a fore-spinning frame according to claim 4, wherein the frictional force variation structures (32a, 32b) include openings (32a) or projections (32b).
- The cleaner (30) for a fiber bundle feeder (10) in a fore-spinning frame according to any one of claims 1 to 5, wherein the tubular clearer (32) is configured to block passage of the fiber between the tubular clearer (32) and the top roller (14, 15, 16, 17) when the tubular clearer (32) contacts the top roller (14, 15, 16, 17), and the tubular clearer (32) is configured to allow passage of the fiber between the tubular clearer (32) and the top roller (14, 15, 16, 17) when the tubular clearer (32) is not in contact with the top roller (14, 15, 16, 17).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013167703A JP2015036456A (en) | 2013-08-12 | 2013-08-12 | Cleaning device for fiber bundle delivering device of first roving frame |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2837717A1 true EP2837717A1 (en) | 2015-02-18 |
Family
ID=51260748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14179626.8A Withdrawn EP2837717A1 (en) | 2013-08-12 | 2014-08-04 | Cleaner for fiber bundle feeder in fore-spinning frame |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150040355A1 (en) |
EP (1) | EP2837717A1 (en) |
JP (1) | JP2015036456A (en) |
KR (1) | KR20150020081A (en) |
CN (1) | CN104372452A (en) |
TW (1) | TW201520389A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016194173A (en) * | 2015-04-01 | 2016-11-17 | 村田機械株式会社 | Draft device and spinning machine |
CN105155057B (en) * | 2015-10-26 | 2017-11-17 | 丛鑫浩 | A kind of Cotton Drawing Frame |
IT201800010073A1 (en) * | 2018-11-06 | 2020-05-06 | Marzoli Machines Textile Srl | SPINDLE BENCH WITH SEGMENTED IRONING CYLINDERS |
JP7180333B2 (en) * | 2018-12-04 | 2022-11-30 | 株式会社豊田自動織機 | Spinning machine fiber bundle concentrator |
CN109355739A (en) * | 2018-12-17 | 2019-02-19 | 东营市宏远纺织有限公司 | Modern comber cleans dust exhaust apparatus |
TWD204932S (en) | 2019-06-05 | 2020-06-01 | 南韓商Cj第一製糖股份有限公司 | Container for food packing |
CN110273203A (en) * | 2019-06-20 | 2019-09-24 | 桐乡市中皋纺织有限公司 | A kind of cleaning device of fly frame |
CN112410950B (en) * | 2020-12-07 | 2021-08-17 | 绍兴心和陇纺织有限公司 | Novel material fiber drawing process capable of ensuring high-quality sliver yielding |
CN114808208B (en) * | 2022-05-06 | 2023-04-11 | 巢湖市春维纺织有限公司 | Environment-friendly air flow spinning machine |
CN115418757B (en) * | 2022-08-15 | 2024-01-05 | 陆川恒和纺织科技有限责任公司 | Adjustable spinning frame |
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US2862249A (en) * | 1956-03-06 | 1958-12-02 | Whitin Machine Works | Drawing frame and clearer system therefor |
US3113351A (en) * | 1957-08-06 | 1963-12-10 | Joh Jacob Rieter & Co Ltd | Fly suction device for drafting arrangements |
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FR2032374A1 (en) * | 1969-02-24 | 1970-11-27 | Elitex Zavody Textilniho | Cleaning device for drafting rollers on - textile machines |
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JPH0733981U (en) | 1993-11-30 | 1995-06-23 | 株式会社原織機製作所 | Clearer device in spinning machine |
JP2005120561A (en) | 2003-10-10 | 2005-05-12 | Truetzschler Gmbh & Co Kg | Apparatus for sliver having at least two pair of rollers and cleaning unit for upper rollers thereof and arranged on draw frame |
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US1077528A (en) * | 1911-12-18 | 1913-11-04 | Nelson C Clouette | Clearer-roll for drawing, roving, and spinning frames. |
US1246535A (en) * | 1916-01-18 | 1917-11-13 | James Randolph Greenwood Briercliffe | Clearer for spinning-machines. |
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US2228809A (en) * | 1937-07-06 | 1941-01-14 | Solanas Ramon Balmes | Mechanism for drawing textile rovings provided with needle rollers |
FR1237175A (en) * | 1959-06-13 | 1960-07-29 | Improvements to cleaning units for machines treating fibrous products | |
US3340577A (en) * | 1964-04-20 | 1967-09-12 | Pneumafil Corp | Doctor blade clearer |
DE1926419A1 (en) * | 1969-05-23 | 1970-12-10 | Univeg Maschinen Und Appbau Gm | Cleaning device for drafting systems of spinning machines |
US3772738A (en) * | 1971-07-16 | 1973-11-20 | Deering Milliken Res Corp | Drafting system |
JPS5149390Y2 (en) * | 1972-03-03 | 1976-11-29 | ||
JPS59113361U (en) * | 1982-12-06 | 1984-07-31 | 北辰工業株式会社 | Clear roller for spinning machine |
JPH0622375U (en) * | 1992-08-18 | 1994-03-22 | 村田機械株式会社 | Draft roller cleaning device |
JP2012127007A (en) * | 2010-12-13 | 2012-07-05 | Toyota Industries Corp | Draft machine in fore spinning process |
-
2013
- 2013-08-12 JP JP2013167703A patent/JP2015036456A/en not_active Abandoned
-
2014
- 2014-08-04 TW TW103126522A patent/TW201520389A/en unknown
- 2014-08-04 EP EP14179626.8A patent/EP2837717A1/en not_active Withdrawn
- 2014-08-07 KR KR20140101913A patent/KR20150020081A/en not_active Application Discontinuation
- 2014-08-08 CN CN201410388362.2A patent/CN104372452A/en active Pending
- 2014-08-08 US US14/455,416 patent/US20150040355A1/en not_active Abandoned
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US2862249A (en) * | 1956-03-06 | 1958-12-02 | Whitin Machine Works | Drawing frame and clearer system therefor |
US3113351A (en) * | 1957-08-06 | 1963-12-10 | Joh Jacob Rieter & Co Ltd | Fly suction device for drafting arrangements |
US3196476A (en) * | 1962-11-06 | 1965-07-27 | Pneumafil Corp | Roll clearing |
FR2032374A1 (en) * | 1969-02-24 | 1970-11-27 | Elitex Zavody Textilniho | Cleaning device for drafting rollers on - textile machines |
US3733644A (en) * | 1971-07-16 | 1973-05-22 | Deering Milliken Res Corp | Scraper member for drafting system |
JPH02374U (en) | 1988-06-10 | 1990-01-05 | ||
JPH0733981U (en) | 1993-11-30 | 1995-06-23 | 株式会社原織機製作所 | Clearer device in spinning machine |
JP2005120561A (en) | 2003-10-10 | 2005-05-12 | Truetzschler Gmbh & Co Kg | Apparatus for sliver having at least two pair of rollers and cleaning unit for upper rollers thereof and arranged on draw frame |
Also Published As
Publication number | Publication date |
---|---|
KR20150020081A (en) | 2015-02-25 |
CN104372452A (en) | 2015-02-25 |
JP2015036456A (en) | 2015-02-23 |
US20150040355A1 (en) | 2015-02-12 |
TW201520389A (en) | 2015-06-01 |
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