US3902223A - Apparatus for generating a suction air stream in a web collecting zone of a card - Google Patents
Apparatus for generating a suction air stream in a web collecting zone of a card Download PDFInfo
- Publication number
- US3902223A US3902223A US391972A US39197273A US3902223A US 3902223 A US3902223 A US 3902223A US 391972 A US391972 A US 391972A US 39197273 A US39197273 A US 39197273A US 3902223 A US3902223 A US 3902223A
- Authority
- US
- United States
- Prior art keywords
- web
- hood
- air stream
- roll arrangement
- collecting zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/76—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area
- D01G15/763—Stripping or cleaning carding surfaces; Maintaining cleanliness of carding area by suction or blowing
Definitions
- ABSTRACT [30] Foreign Application Priority Data An apparatus for generating a suction air stream in a Sept. 15, 1972 Switzerland 13524/72 Web Collecting Zone of a Card Comprising a liftable 9r detachable hood connected to a vacuum source and at 52 us. c1. 19/107 least Partially covering the Web Collecting Zone in Such 51 1m. (:1. 10016 15/76 a manner that the air Stmam at least partially passes 58 Field of Search 19/107, 109, 263 through a Web pp y a Web takeoff r9ll arrangement. Means for influencing the air stream are pro- 5 References Cited vided beneath the hood directly above the web and in FOREIGN PATENTS OR APPLICATIONS 11/1968 Germany 19/107 close vicinity to the roll arrangement.
- the present invention relates to a new and improved construction of apparatus for generating a suction air stream in a web collecting zone of a card, comprising a liftable or detachable hood connected to a vacuum source and which at least partially covers the web collecting zone in such a manner that the air stream at least partially passes through a web supplied by a web take-off roll arrangement.
- Devices of this type are used. for instance, on a card in staple fiber spinning.
- connection is arranged at the stationary cover of the web take-off device, i.e. in front of the hood and viewed in the direction of movement of the web, in such a manner that there is not required any pivotal arrangement of such connection.
- an air stream is generated which at least partially passes through the web substantially about the last roll of the web take-off roll arrangement and flows in the direction of the aspiration system connection.
- the drawback of this prior art arrangement resides in the fact that the air stream, following the shortest path or the path presenting the least resistance, mainly extends in the region of the last roll of the last take-off roll arrangement and thus extends at a relatively steep angle relative to the web, so that with an aspiration-wise optimum air stream intensity there is present a severe danger of rupture of the web if additional air impulses or surges act upon the card from the outside. Also, the mechanical deflection of the web about the last roll, e.g. caused by contaminating particles sticking to the rolls, which entrain web portions of smaller or larger size, is intensified by an air stream, which as mentioned above, extends steeply in relation to the web.
- a further drawback of such arrangement incorporating a hood resides in the fact that when the hood is opened or when the volume of air beneath the hood is increased, there is generated an additional air stream which passes through the web and which can be so intensive that if the hood is lifted too quickly the web can be ruptured.
- Another and more specific object of the present invention aims at eliminating the danger of web rupture during regular or normal operation as well as during quick opening of the hood arranged above the web, so
- Means for influencing the air stream are provided beneath the hood directly above the web and in close vicinity to the roll arrangement.
- FIG. I is a schematic cross-sectional view of the delivery end of a card equipped with a suction apparatus for generating a suction air stream at the web collecting zone of the card and designed according to the teachings of the invention;
- FIG. 2 is a fragmentary perspective view of the hood member used in the arrangement of FIG. I and depicting the air entry openings thereof closed;
- FIG. 3 is a partial cross-sectional view of an alternate embodiment of hood member, depicting its air entry closure member in its closed state;
- FIG. 4 is a view, similar to the showing of FIG. 3, but this time depicting the air entry closure member in its opened state or position;
- FIG. 5 is a fragmentary view showing a detail of the inside of the hood member.
- a web 1 is taken-off the doffer cylinder 2 by an intermediate roll 3 from which location it is further transported by a grooved roll 40, a smooth roll 4b, and a web delivery roll 5.
- the web I is finally taken-off by a pair of calender rolls 6 through the agency of a preceding web condensing trumpet 7.
- a hood or hood member 10 is pivotably arranged by means of hinges or pivots 9 on a card doffing roll cover 8.
- an air stream guide plate I l and a guide plate 12 which does not contact the web delivery roll 5.
- the guide plates 11 and 12 are connected with the hood or hood member 10 by means of the holders or supports 13, I4, and IS.
- a flange 16 de picted in dash and dot or phantom lines portrays the possibility of rigidly connecting the guide plate 12 with at least one card frame member 17, in which case the holder or support 15 can be omitted.
- a suction nozzle 18 is connected with the hood 10, this nozzle 18 serving to suck-in air from the room or area upstream of the web condensing trumpet 7.
- the vacuum desired beneath the hood member or hood I0 is generated by an aspirator or venting connection 19 which connects the room or space beneath the hood with any suitable aspirator duct which has not been particularly shown in the drawing to preserve clarity in illustration.
- Air entry openings 20 are provided at the hood 10, as best seen by referring to FIG. 2.
- a sliding baffle 21 having openings 22, the baffle 21 being arranged within and directly at the hood 10.
- the size and mutual spacing of the openings 22 of the baffle 21 coincides with the size and mutual spacing of the openings 20 at the hood 10.
- the baffle 21 is guided by guide rails 23 and 24 in such a manner that in its one'end position, as depicted in FIG. 2, this baffle seals the air entry openings 20 and in its other end position the air entry openings 20 and 22 coincide i.e. overlie one another in such a manner that air can penetrate into the inside room or space of the hood l0.
- Displacement or shifting of the baffle 21 can be carried out by means of a handle 25 connected with the baffle, this handle being slidably arranged in a slot 26 provided at the hood 10, as best seen by referring to FIG. 2.
- This handle 25 also may be conveniently employed for lifting or raising the hood 10.
- an arresting latch or lever 27 is provided on the baffle 21, the arresting latch penetrating by means of a foot or base portion 28 provided at the lever 27 beneath a pin 30 fixed at the card housing portion 29 (FIGS. 1, 2 and 5) when the baffle 21 is in its end position in which the air entry openings are sealed or blocked. In this way the hood 10 can be locked and prevented from being opened when the baffle 21 assumes such position.
- the distance A (FIG. 5) at least corresponds to the sliding distance B (FIG. 2) of the baffle and thus enables the hood 10 to be unlocked so that it can be lifted-off when the baffle 21 is in its other terminal or end position where the air entry openings 20 and 22 are superimposed.
- FIG. 3 there is depicted a variant construction of air entry opening closure or seal wherein the air entry opening 20 is closed or sealed by a cover 31 hingedly connected by a hinge means 32 with the hood 10.
- a rotatable handle or handgrip 33 is associated with the cover or flap member 31.
- the handle 33 is equipped with a cam or projection 34 for supporting the cover 3], in its open position as depicted in FIG. 4, on the hood 10.
- the hood 10 can be lifted or raised by means of a handle 35.
- the air entry openings and their sealing or closure means are not restricted to the illustrated exemplary embodiments and all constructions suitable for this purpose can be employed.
- the air stream generated by the vacuum prevailing internally of the hood 10, upon partial penetration through the web I, is deflected by the guide plate 12 away from the web delivery roll 5 into the hollow room or space located thereabove. In this way there is prevented that there will be generated an air stream C which extends at a steep angle 01 with respect to the web I and which could arch or bow the web 1 as indicated with the dash and dot or phantom lines 36 and could cause rupture of the web.
- the guide plate 12 deflects any web portions clinging to the web delivery roll 5 in such a manner that they are reincorporated into the web 1.
- the handle 25 is shifted in the direction D (FIG. 2) thru the sliding distance B, with the result that the openings 22 of the sliding baffle 21 are shifted so as to slide beneath the openings 20 of the hood l0 and, on the other hand.
- the foot or base portion 28 of the locking latch or lever 27 is moved through the distance A so that the hood 10 can be now lifted or raised-off.
- the hood cannot be raised or lifted-off during the time that the air entry openings are closed.
- An apparatus for generating a suction air stream in a web collecting zone of a card comprising means for providing a web collecting Zone including a web take-off roll arrangement for supplying a web, means for receiving and collecting the web, a liftable hood defining a room beneath said hood and cooperating with the web take-off roll arrangement, means for connecting the room beneath the liftable hood with a vacuum source, said liftable hood covering the entire web collecting zone in such a manner that the air stream substantially passes through the web supplied by the web take-off roll arrangement, and means for influencing the air stream essentially beneath the hood above the web.
- said influencing means including substantially horizontally arranged guide plate means disposed adja cent the web take-off roll arrangement and directly above the web between said web take-off roll arrangement and said means for receiving and collecting the web for preventing a substantially vertical passage of the air stream through the web in the collecting zone adjacent the roll arrangement.
- said influencing means includes at least one air entry opening in said hood.
- An apparatus for generating a suction air stream in a web coliecting zone of a card comprising means for providing a web collecting zone including a web take-off roll arrangement for supplying a web, a liftable hood enclosing a space therein and cooperating with the web take-off roll arrangement, means for connecting the space within the liftable hood with a vacuum source, said liftable hood at least partially covering the web collecting Zone in such a manner that an air stream at least partially passes through the web supplied by the web take-off roll arrangement, means for influencing the air stream beneath the hood above the web and adjacent the roll arrangement, said influencing means in cluding at least one air entry opening provided at said hood, means comprising a sliding baffle for sealing said air entry opening, said baffle being provided with means for locking the hood in position during such time as the air entry opening is sealed.
- said locking means comprises a lever mounted at the baffle, a'pin mounted in fixed position relative to the baffle, said lever having a foot which extends beneath the pin when the air entry opening is sealed in order to thus prevent lifting-off of the hood.
- An apparatus for generating a suction air stream in a web collecting zone of a card comprising means for providing a web collecting zone including a web take-off roll arrangement for supplying a Web, a liftable hood enclosing a space therein and cooperating with the web take-off roll arrangement, means for connecting the space within the liftable hood with a vacuum source, said liftable hood at least partially covering the web collecting zone in such a manner that an air stream at least partially passes through the web supplied by the web take-off roll arrangement, means for influencing the air stream beneath the hood above the web and adjacent the roll arrangement, said influencing means including at least one air entry opening provided at said hood, means comprising a sliding baffle for sealing said air entry opening, said baffle being provided with at
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Air-Flow Control Members (AREA)
- Treatment Of Fiber Materials (AREA)
- Advancing Webs (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1352472A CH558430A (de) | 1972-09-15 | 1972-09-15 | Vorrichtung zur erzeugung eines absaugluftstromes in einer vlieszusammenfasszone einer karde. |
Publications (1)
Publication Number | Publication Date |
---|---|
US3902223A true US3902223A (en) | 1975-09-02 |
Family
ID=4393166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US391972A Expired - Lifetime US3902223A (en) | 1972-09-15 | 1973-08-27 | Apparatus for generating a suction air stream in a web collecting zone of a card |
Country Status (9)
Country | Link |
---|---|
US (1) | US3902223A (de) |
JP (1) | JPS5518380Y2 (de) |
BR (1) | BR7307087D0 (de) |
CH (1) | CH558430A (de) |
DE (1) | DE2344541C3 (de) |
ES (1) | ES418783A1 (de) |
FR (1) | FR2200381B1 (de) |
GB (1) | GB1431290A (de) |
IT (1) | IT990224B (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419016A (en) * | 1992-08-04 | 1995-05-30 | Maschinenfabrik Rieter Ag | Casing of a card including suction openings |
US20140304950A1 (en) * | 2010-12-20 | 2014-10-16 | Kannan Lakshminarayan | Method and apparatus for carding of staple fibers |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT7853723V0 (it) * | 1978-09-22 | 1978-09-22 | Sant Andrea Novara Officine | Macchina pettinatrice per fibre tessili |
US4649605A (en) * | 1985-04-25 | 1987-03-17 | Eastman Kodak Company | Method for determining cohesion in staple fibers |
DE3912529A1 (de) * | 1989-04-17 | 1990-10-18 | Hergeth Hubert | Absaugraum |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE63720C (de) * | E. GRUBE in Hamburg, Albertstrafse 9 | Brodschneidemaschine | ||
GB191420065A (en) * | 1914-09-23 | 1915-09-23 | Thomas Edward Wilson | Improvements in Pneumatic Apparatus for Collecting and Removing Stripped Waste, Fibrous Dust and other Impurities from Carding Surfaces of Carding Engines. |
DE1236380B (de) * | 1964-06-01 | 1967-03-09 | Luwa Ag | Pneumatische Vorrichtung zum Entstauben von Karden |
GB1098949A (en) * | 1966-08-10 | 1968-01-10 | Luwa Ag | Improvements in or relating to suction cleaning of the licker-in and the doffer of cards |
GB1202248A (en) * | 1966-10-24 | 1970-08-12 | Sulzer Ag | Carding engine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB761472A (en) * | 1954-04-29 | 1956-11-14 | Howorth & Son Ltd D | Improvements in textile carding engines |
BE642040A (de) * | 1963-01-09 | |||
GB982809A (en) * | 1963-01-30 | 1965-02-10 | Tmm Research Ltd | Improvements in textile carding machines |
DE1510315B1 (de) * | 1964-11-10 | 1970-05-21 | Luwa Ag | Absaugeinrichtung bei schnellaufenden Karden und aehnlichen Spinnereivorbereitungsmaschinen im Bereich des Abnehmers |
-
1972
- 1972-09-15 CH CH1352472A patent/CH558430A/de not_active IP Right Cessation
-
1973
- 1973-08-10 IT IT51975/73A patent/IT990224B/it active
- 1973-08-27 US US391972A patent/US3902223A/en not_active Expired - Lifetime
- 1973-09-04 DE DE2344541A patent/DE2344541C3/de not_active Expired
- 1973-09-10 ES ES418783A patent/ES418783A1/es not_active Expired
- 1973-09-12 BR BR7087/73A patent/BR7307087D0/pt unknown
- 1973-09-13 GB GB4303673A patent/GB1431290A/en not_active Expired
- 1973-09-14 FR FR7333075A patent/FR2200381B1/fr not_active Expired
- 1973-09-14 JP JP1973107206U patent/JPS5518380Y2/ja not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE63720C (de) * | E. GRUBE in Hamburg, Albertstrafse 9 | Brodschneidemaschine | ||
GB191420065A (en) * | 1914-09-23 | 1915-09-23 | Thomas Edward Wilson | Improvements in Pneumatic Apparatus for Collecting and Removing Stripped Waste, Fibrous Dust and other Impurities from Carding Surfaces of Carding Engines. |
DE1236380B (de) * | 1964-06-01 | 1967-03-09 | Luwa Ag | Pneumatische Vorrichtung zum Entstauben von Karden |
GB1098949A (en) * | 1966-08-10 | 1968-01-10 | Luwa Ag | Improvements in or relating to suction cleaning of the licker-in and the doffer of cards |
GB1202248A (en) * | 1966-10-24 | 1970-08-12 | Sulzer Ag | Carding engine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419016A (en) * | 1992-08-04 | 1995-05-30 | Maschinenfabrik Rieter Ag | Casing of a card including suction openings |
US20140304950A1 (en) * | 2010-12-20 | 2014-10-16 | Kannan Lakshminarayan | Method and apparatus for carding of staple fibers |
Also Published As
Publication number | Publication date |
---|---|
FR2200381B1 (de) | 1978-09-08 |
FR2200381A1 (de) | 1974-04-19 |
JPS5518380Y2 (de) | 1980-04-28 |
JPS4982012U (de) | 1974-07-16 |
DE2344541C3 (de) | 1981-06-11 |
ES418783A1 (es) | 1976-06-16 |
DE2344541A1 (de) | 1974-04-04 |
CH558430A (de) | 1975-01-31 |
DE2344541B2 (de) | 1980-08-21 |
BR7307087D0 (pt) | 1974-07-25 |
GB1431290A (en) | 1976-04-07 |
IT990224B (it) | 1975-06-20 |
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