US3444678A - Yarn severing mechanism - Google Patents
Yarn severing mechanism Download PDFInfo
- Publication number
- US3444678A US3444678A US715749A US3444678DA US3444678A US 3444678 A US3444678 A US 3444678A US 715749 A US715749 A US 715749A US 3444678D A US3444678D A US 3444678DA US 3444678 A US3444678 A US 3444678A
- Authority
- US
- United States
- Prior art keywords
- yarn
- bobbin
- bobbins
- spindle
- spindles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
- D01H9/16—Yarn-severing arrangements, e.g. for cutting transfer tails; Separating of roving in flyer
Definitions
- a yarn severing mechanism for a doffing mechanism adapted to remove bobbins from a row of spindles carried on a spinning frame with means for guiding a length of yarn extending between a dotted bobbin and its respective spindle to a position where it is then guided into contact with a cutting element.
- the dofiing mechanism to which the present invention is applicable comprises a carriage having track guided rollers for mounting the same on machines such as spinning frames twisters, or the like which support a row of spindles that are utilized in a known manner during the processing of textile yarns.
- This carriage is adapted to be moved on such machines along a path parallel to the spindles and to raise and remove the bobbins carried thereon.
- the means utilized for dofiing full bobbins includes a drive breaking cam and in close proximity therewith a flexible inclined lifting cam member for raising the bobbins to a position where they are guided into a receptacle adapted to receive the bobbins as they are dofied.
- a filling or yarn package on a bobbin is wound to a predetermined size and as well known to those conversant in the art, the final wind of yarn is carried rapidly downwardly from the upper portion of the package forming somewhat of a helix wind about the package and as it leaves the bobbin the filling thread is wrapped about the base of the spindle where it is held in preparation for the next bobbin.
- the yarn severing mechanism according to the instant invention has corrected the undesirable condition described above by providing a positive means for parting the yarn which extends between a dotted bobbing and its respective spindle.
- the guide chute which directs the bobbins into a receptacle after they leave their respective spindle is formed in two parts with the adjacently disposed edges of each forming guide surface for directing the yarn extending from a bobbin to a lower position where it is caused to make contact with one of the track guided rollers of the carriage.
- This particular roller forms a rotatable yarn positioner the peripheral edges of which are provided with yarn receiving notches and as the carriage is advanced any yarn in these notches is carried therewith and caused to make contact with a cutting element which severs said yarn.
- FIG. 1 is a perspective view of a portion of a doffing mechanism showing the yarn severing apparatus according to the invention applied thereto;
- FIG. 2 is an end view partially in section showing a dotted bobbin with its yarn still intact and the position it is caused to assume relative to its respective spindle and the severing apparatus shown in FIG. 1;
- FIG. 3 is a view in side elevation and on a slightly enlarged scale of the yarn severing apparatus in FIG. 1 showing further detail thereof.
- the present invention is applicable to a dofling and donning machine such as that disclosed in United States Patent No. 3,077,725, and since this patent may be referred to for a more detailed description of such a machine, it is considered unnecessary at this point to insert herein the details of the general aspects of construction and operation of this unit.
- FIG. 1 a portion of a doffing and donning machine generally indicated by numeral 10.
- This machine 10 is adapted to be mounted on and moving along the rail 11 (FIG. 2) of a spinning frame by means of flanged rollers 12 and 13.
- FIG. 2 A portion of a spinning frame is shown in FIG. 2 and includes rail support brackets 14 (one only shown) to which a spindle rail 15 is suitable attached.
- the spindle rail extends for substantially the full longitudinal extent of the spinning frame and is adapted to support a row of spindles 16 thereon (one only shown in FIG. 2).
- the usual ring rail 17 is disposed above the spindle rail and carries the spinning rings 18 through which the spindles 16 are adapted to extend.
- the supporting framework of the dofiing and donning machine 10 is shown at 19 which includes an upper horizontally disposed plate 20.
- This plate 21 ⁇ is adapted to support the doffing mechanism of the machine as well as the yarn severing mechanism comprising the invention.
- the dofling mechanism includes a drive breaking cam 21 which is adapted to move beneath and to contact the butt portion of each bobbin 22 to break the hold between said bobbin and its respective spindle 16.
- a drive breaking cam 21 which is adapted to move beneath and to contact the butt portion of each bobbin 22 to break the hold between said bobbin and its respective spindle 16.
- a bobbin As a bobbin leaves its respective spindle it is directed into a guide chute generally indicated by numeral 25 which leads to a receptacle (not shown) adapted to receive the bobbins as they are doffed.
- this guide chute consists of two separate plate-like guides 26 and 27 which are fixedly attached to a common support bracket 28 of L shaped configuration.
- the lower edge of this support bracket 28 is fixed to one side of a hinge 29 (FIG. 2) with the opposite side of said hinge is assembled to plate 20 by means of screws 30 (one only shown).
- hinge 29 By means of hinge 29 the guide chute can be pivoted from its solid line operating position shown in FIG. 2 to the phantom line inactive position also shown in this figure of drawing.
- the guide chute 25 is retractable with the dofiing mechanism and provides a more compact unit, when not in use for storing and moving about from one location to another.
- sides 31 and 32 of the plate-like guides 26 and 27, respectively, are shown angularly disposed and in close proximity one with the other and form guide surfaces for the yarn Y (FIG. 2) which is not parted during dofling of a bobbin from its respective spindle.
- the yarn Y extends from the bobbin, through recess 33 and thence across the outer peripherial surface of the flanged roller 12 to the spindle 16 about which it is wrapped.
- the guide flanges or outer peripherial surfaces of the roller 12 are provided with a plurality of yarn receiving notches 34 which are equally disposed about the circumferential extent of said roller.
- This portion of the roller 12 defines a rotatable yarn positioner, for as the mechanism is advanced along the rail of the spinning frame the horrtes 34 carry any yarn received thereby to a position to make contact with a cutting element generally indicated by numeral 35.
- This cutting element is attached to an L shaped support bracket 36 (FIG. 2) by means of screws 37 and 38 and said bracket is assembled to plate 20 by means of screws 39 (only one shown).
- the cutting element itself comprises a pair of mating plate members 40 and 41 (FIG. 2) which are assembled together by means of a pair of screws 42 and 43 (FIGS. 1 and 3).
- One side of the upper portion of the cutting element is provided with a recess 44 (FIGS. 1 and 3) having a replaceable yarn cutting blade 45 forming the lower edge thereof.
- the cutting blade is clamped between the plate members and 41 and its proper position is maintained by causing it to seat again pin members 46.
- the upper edge of the recess 44 defines a guide finger 47 and serves to prevent the yarn advanced by the notches 34 from moving beyond the limits of the cutting blade 45.
- the recess 44 of the cutting element 35 is adapted to be positioned in close proximity with that surfaces of the roller 12 intermediate the flanged side thereof. This adjustment is accomplished by a slot 48 (FIGS. 1 and 3) provided in the support bracket 36 through which the shank portion of screws 37 and 38 are adapted to extend. By simply loosening these screws the cutting element may be moved within the limits of slot 48 and when the desired setting is found the screws are tightened.
- the dofling mechanism is moved along the rail of a spinning frame and the bobbins are cammed from their respective spindles and guided into a receptacle in a manner well known to those conversant in'the art.
- a yarn severing device for a dofling mechanism adapted to remove bobbins from a row of spindles sup ported on a spinning frame which includes a carriage with means for mounting the latter on said spinning frame to move along a path parallel to said spindles, a bobbin raising cam movable with said carriage to raise said bobbins on said spindles to a doff position, and a guide chute member for receiving the bobbins as they are removed from their respective spindles, said yarn severing device including a cutting element fixed to and movable with said carriage, guide means forming a part of said chute for positioning the yarns extending between dofled bobbins and their respective spindles, and a rotatable yarn positioner for receiving and advancing yarn extending from doifed bobbins to a position to be severed by said cutting element.
- said means for mounting said carriage on said spinning frame includes a pair of guided rollers disposed in spaced relation with the outer periphery of one defining said rotatable yarn positioner.
- the yarn severing device includes flanged sides formed in opposed relation having a plurality of aligned yarn receiving notches equally disposed about the peripherial extent thereof.
- said guide chute member comprises a pair of cooperating chute elements having ends disposed in close proximity one with the other and at an angle to the horizontal forming yarn guiding surfaces for directing of the yarn extending from a dotted bobbin to a position to be received into said notches.
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US71574968A | 1968-03-25 | 1968-03-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3444678A true US3444678A (en) | 1969-05-20 |
Family
ID=24875326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US715749A Expired - Lifetime US3444678A (en) | 1968-03-25 | 1968-03-25 | Yarn severing mechanism |
Country Status (1)
Country | Link |
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US (1) | US3444678A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3077725A (en) * | 1961-11-15 | 1963-02-19 | Willcox & Gibbs Sewing Machine | Doffing and donning machine |
US3083923A (en) * | 1960-03-08 | 1963-04-02 | Monsanto Chemicals | Transferring and cutting apparatus |
US3290872A (en) * | 1966-02-10 | 1966-12-13 | Draper Corp | Yarn severing device |
US3307340A (en) * | 1963-04-01 | 1967-03-07 | To Yo Da Automatic Loom Works | Apparatus for continuously effecting automatic bobbin exchange on spinning machine |
-
1968
- 1968-03-25 US US715749A patent/US3444678A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3083923A (en) * | 1960-03-08 | 1963-04-02 | Monsanto Chemicals | Transferring and cutting apparatus |
US3077725A (en) * | 1961-11-15 | 1963-02-19 | Willcox & Gibbs Sewing Machine | Doffing and donning machine |
US3307340A (en) * | 1963-04-01 | 1967-03-07 | To Yo Da Automatic Loom Works | Apparatus for continuously effecting automatic bobbin exchange on spinning machine |
US3290872A (en) * | 1966-02-10 | 1966-12-13 | Draper Corp | Yarn severing device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DELTA ACQUISTION CORPORATION; HORNADAY RD., GREENS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ROCKWELL INTERNATIONAL CORPORATION;REEL/FRAME:004113/0020 Effective date: 19820321 Owner name: DRAPER CORPORATION, Free format text: CHANGE OF NAME;ASSIGNOR:DELTA ACQUISITION CORPORATION,;REEL/FRAME:004097/0735 Effective date: 19820920 |
|
AS | Assignment |
Owner name: CITICORP INDUSTRIAL CREDIT INC., A CORP. OF DE Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION A CORP. OF GA F/K/A DELTA ACQUISITION CORPORATION;REEL/FRAME:004070/0533 Effective date: 19821021 |
|
AS | Assignment |
Owner name: STANCHART BUSINESS CREDIT, 200 GALLERIA PARKWAY, N Free format text: SECURITY INTEREST;ASSIGNOR:DRAPER CORPORATION;REEL/FRAME:004539/0198 Effective date: 19860328 |
|
AS | Assignment |
Owner name: DRAPER CORPORATION, GREENSBORO, NORTH CAROLINA A C Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:CITICORP INDUSTRIAL CREDIT, INC.;REEL/FRAME:004664/0583 Effective date: 19860331 |