US3528150A - Method for removing the residual threads from a spool - Google Patents

Method for removing the residual threads from a spool Download PDF

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Publication number
US3528150A
US3528150A US702739A US3528150DA US3528150A US 3528150 A US3528150 A US 3528150A US 702739 A US702739 A US 702739A US 3528150D A US3528150D A US 3528150DA US 3528150 A US3528150 A US 3528150A
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US
United States
Prior art keywords
discs
thread
spool
wound
residue
Prior art date
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Expired - Lifetime
Application number
US702739A
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English (en)
Inventor
Erwin Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Knotex Maschinenbau Fa GmbH
Knotex Maschinenbau Firma GmbH
Original Assignee
Knotex Maschinenbau Fa GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Knotex Maschinenbau Fa GmbH filed Critical Knotex Maschinenbau Fa GmbH
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Publication of US3528150A publication Critical patent/US3528150A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H73/00—Stripping waste material from cores or formers, e.g. to permit their re-use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a process and a device for removing the residual thread from a spool, in which the start of the thread is effected by a current of air from the suspended spool to a rotating former and is wound thereon.
  • driving rollers are provided which engage the spool at its downwardly hanging end and rotate it in the opposite direction to the direction of winding of the thread residue still present on the spool. In this way the end of the thread is loosened, with the additional aid of a suction current of air acting at right angles to the axis of the spool.
  • This loosened end of the thread then has to be brought, by an arm rotating in a plane parallel to the axis of the spool and provided with suction and blowing nozzles, to a winding drum onto which the thread is then wound.
  • a winding drum is provided on its periphery with brushes on which the start of the thread remains suspended so that the following thread residue can be wound onto the winding drum.
  • this known device is of extremely complicated construction, it also has the disadvantage that the threads wound on the winding drum have to be removed from time to time by cutting off the thread residues wound onto the winding drum. This is a laborious and time consuming operation, during which either the machine cannot be used at all or a second winding drum must be inserted into the machine.
  • a further disadvantage of the known device resides in the fact that it has a relatively low output because the successive stages of operation, in particular the engagement and drive of each individual spool, require a relatively long period of time.
  • the present invention is based on the problem of providing a process for the removal of the thread residue from a spool, which on the one hand permits rapid and satisfactory removal of the thread residue and on the other hand can be performed with simple means.
  • the invention is based on the further problem of providing a device for the performance of the process, which is characterized by a particularly simple construction, high output and good efficiency.
  • the process according to the present invention is characterized in that the start of the thread is blown into the opened gap between opposed faces of two rotating discs, the faces of the discs are then pressed against one another so that the start of the thread is firmly clamped between the two discs, thereupon the thread is wound on the periphery of the discs, and finally with the discs opened again, the wound thread residue is removed from the gap, preferably by a further current of air.
  • each thread residue is removed again immediately after being wound onto the discs, which is permitted by reason of the faces of the discs being separated from one another again after the winding of the thread residue.
  • the thread residue looses its supporting surface at the periphery of the discs and can easily be removed from the gap between the two discs.
  • each thread residue is therefore removed immediately after winding.
  • the process according to the invention permits continuous working, which is interrupted only by the removal of cleared spools and the insertion of spools to be cleared.
  • the process according to the invention also avoids the disadvantages that occur in those processes in which the threads are not wound on a former'but are merely drawn off the spool by one or two formers and are fed in free fall to a reservoir.
  • the process according to the invention also has the advantage that the unwound thread residues are wound together in relatively compact form, so that they take up little space and it is not necessary to provide pressing devices which as in known processes press the loose thread residues together.
  • the process according to the invention can be performed with particular certainty if two discs are employed which taper from the edge to the faces so that in the condition in which they are pressed together there is formed between them a substantially V-shaped peripheral groove in which the thread is wound.
  • the wound thread residue slides on the tapering surfaces of the discs and falls out, or may be blown out in the required direction by a blowing current of air.
  • a device for the performance of the process according to the invention is characterized by two coaxially rotatable discs mounted in line, the faces of which are opposed to one another and at least one of which is mounted so as to be axially movable and is capable of having its face pressed onto the face of the other disc, at least one of the discs tapering at the periphery from the edge to its face in such manner that an approximately V-shaped groove for winding the thread is formed between the discs when pressed together.
  • This device is of particularly simple construction, high reliability of operation, high output and good efficiency. Further detailed reference will be made hereto in the specific description.
  • FIG. 1 is a front view, partly in section, of a device for performing the process according to the invention
  • FIG. 2 is a plan view, partly in section
  • FIG. 3 is a section on the line IIIIII of FIG. 1.
  • reference numeral 1 indicates a holding device which consists essentialy of a beam 2 which is movable in the direction A (FIG. 3) and has substantially U-shaped holding pieces 3 secured to it.
  • Each of the holding pieces has at its lower part an edge 4 for supporting the spool head 5a of the spool 5.
  • the holding piece may be provided with permanent magnets 6 which co-operate with iron rings 7 on the spool head.
  • the holding pieces 3 are advantageously further provided with one or more downwardly inclined blowing nozzles 8 directed onto the spool 5, which are connected to a source of compressed air through the intermediary of a valve (not illustrated).
  • this withdrawing device consists of two coaxially and rotatably mounted discs 9 and 10, a plurality of which may be arranged adjacent one another in pairs as is illustrated in the drawings.
  • the discs 9 and 10 have the'n faces 9a and 10a facing one another.
  • At least one of the discs, the disc 10 in the practical example shown, is mounted so as to be movable in the axial direction and so that its face 10a can be pressed onto the face 9a of the other disc 9. More detailed reference to this movable mounting will be made below.
  • Both discs taper peripherally from the edge to the faces in such manner that, as can be seen from the drawing, an approximately V-shaped groove for winding the thread is formed between the discs when pressed together.
  • the disc tapers from the edge like the frustrum of a cone.
  • the angle or included between the generating line and the axis of the cone or disc has to be so large that, as is further explained below, with the discs opened the wound thread slips off the conical surface.
  • the disc 10 By rotating the eccentric in clockwise direction in FIG. 1 the disc 10 can be shifted towards the stationary disc 9, its face 10a being pressed resiliently against the face 9a of the other disc due to the spring 15. In order to effect uniform pressure it is advantageous for one of the discs to be capable of executing a slight tilting movement. Withdrawal of the movable disc 10 is eifected by means of a spring 23.
  • each two movable discs 10 and each two immovable discs 9 are arranged symmetrically relative to one another in a bearing member 19 and 24 respectively, as is illustrated in the drawing.
  • the eccentric 20 is formed as a double eccentric which moves the associated discs 10 away from one another simultaneously in opposite directions.
  • a common tension spring 23 returns it to its initial position again.
  • the two driven discs 9 are mounted on a common shaft 11 and also have the drive 12 in common.
  • the holding device 1 is mounted horizontally and at right angles to the axis of rotation of the discs, normal to the plane of the drawing in FIG. 1 and movable in the direction A in FIG. 3.
  • the holding device is in its withdrawal position, i.e., in the position that it assures While the thread is being drawn from the spool.
  • the holding device and the spool hanging from it remain at rest.
  • the position of the holding device, or of the holding piece 3 is advantageously selected so that when the holding device is in the withdrawal position the axis S (FIG. 3) of the spool extends approximately tangentially to the V-shapcd groove between the discs 9, 10. In this manner the thread is drawn from the spool in approximately the axial direction thereof and the thread is not caught on the lower end 5b of the spool.
  • a stripper 25 which acts on the spool head 5a and against which the spool head 5a strikes upon displacement of the holding device in the direction A so that it is shifted out of the holding piece 3.
  • a stripper 25 which acts on the spool head 5a and against which the spool head 5a strikes upon displacement of the holding device in the direction A so that it is shifted out of the holding piece 3.
  • downwardly inclined rails on which the spool head 5a can be supported and slide downwardly.
  • blowing nozzle 27 which is directed towards the gap between the discs and at right angles to the axis of rotation of the discs and which serves for the removal of the wound thread residue from the gap.
  • each of the discs in order to bring the threads correctly between the opened discs it is desirable for each of the discs to be surrounded by a guide member 28 which has guide surfaces 29 directed towards the gap.
  • a guide member 28 which has guide surfaces 29 directed towards the gap.
  • two funnel shaped guide plates 30 inclined towards one another may be provided beneath the discs, the opening 31 of the funnel being located approximately vertically beneath the axis of the discs. These guide surfaces also serve to guide the thread into the gap between the opened discs.
  • the guide member also has the function of preventing winding of the thread on the axle 14 or shaft 1.
  • the spool 5, on which a thread residue R is still located, is brought to the holding device 1 by a feeding device (not illustrated) so that its spool head 5a is supported in the holding piece 3.
  • the permanent magnets cooperating with the rings 7 of the spool ensure that the spool hangs vertically and is securely held during withdrawal of the thread.
  • the movable discs 10 are in their withdrawn starting position, in which they take the position shown in dot-dash lines in the lower central part of FIG. 1. In this way a gap Z is formed between the faces 9a and 10a of the discs.
  • the discs 9 are driven continuously.
  • the start of the thread F is thereby released from the thread residue and is moved downwardly.
  • the guide surfaces 29 of the guide member 28 ensure that the thread passes into the gap Z between the opened discs.
  • the thread or the air current moving the thread may advantageously be guided through the guide plates 30 arranged beneath the discs, so that according to the action of the blowing air current the start of the thread passes at least through the gap Z between the opened discs 'or even further downwardly through the mouth 31 of the funnel formed by the guide plates 30, as is illustrated in FIG. 3. According to how firmly the start of the thread sticks to the spool residue, threads of greater or lesser length are drawn 01f by the blowing air current.
  • an actuating rod 32 may be provided which moves the eccentric axis 34 via a lever 33.
  • the thread residue wound in the groove slides off the conical end faces of the discs 9, 10 and is blown out in the required direction by the current of blowing air. It occupies a relatively small volume since the whole of the thread residue was wound into a ring. During blowing out of the thread residue it is again important for the current of blowing air to be started prior to the opening of the discs, since otherwise it may happen that upon opening of the discs the thread is flung out in an uncontrolled direction by centrifugal force.
  • the holding device After the thread residue has been drawn from the spool the holding device is moved to the delivery station in the direction A (FIG. 3).
  • the spool head 5a strikes the strip per 25 so that it is shifted out of the holding piece 3. It falls onto one of the inclined rails 105 and slides down wardly thereon. Shortly thereafter, the holding device is moved back to its withdrawing position and a new cycle of operation can begin.
  • a plurality of pairs of discs are arranged adjacent one another to enable the thread residues to be withdrawn from a plurality of spools simulta neously.
  • the capacity of the whole device can be appreciably increased without the number of parts required, in particular for driving and controlling the discs and the blowing device, being increased. Since each of the pairs of discs are of similar construction the required number can be mounted adjacent one another from a kit of parts according to the customers requirements.
  • the nozzles 8 In order that the start of the thread may be released 5 from the spool with certainty, it is important for the nozzles 8 to be arranged directly beneath the spool head and as close thereto as possible. For this reason a construction is advantageous in which the blowing nozzles 8 are arranged at the under side of the holding piece.
  • a process of removing thread residue from a spool comprising:

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US702739A 1967-02-04 1968-02-02 Method for removing the residual threads from a spool Expired - Lifetime US3528150A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEK0061346 1967-02-04
DEK0062445 1967-06-02

Publications (1)

Publication Number Publication Date
US3528150A true US3528150A (en) 1970-09-15

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Application Number Title Priority Date Filing Date
US702739A Expired - Lifetime US3528150A (en) 1967-02-04 1968-02-02 Method for removing the residual threads from a spool

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US (1) US3528150A (no)
BE (1) BE710056A (no)
CH (1) CH470318A (no)
FR (1) FR1552601A (no)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866278A (en) * 1973-10-25 1975-02-18 Leesona Corp Method and apparatus for the concurrent stripping of bobbins
US4035882A (en) * 1976-10-18 1977-07-19 The Terrell Machine Company Loom bobbin stripper
US4765043A (en) * 1985-10-16 1988-08-23 Murao Boki Kabushiki Kaisha Apparatus for removing residual rovings on roving bobbins
US5148665A (en) * 1990-04-28 1992-09-22 Kabushiki Kaisha Murao And Company Roving bobbin carrier system
US5220714A (en) * 1991-03-22 1993-06-22 Kabushiki Kaisha Murao And Company Apparatus for removing residual roving from roving bobbin

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1190919A (en) * 1913-08-21 1916-07-11 James Smith Lanier Quill-cleaner.
US1968791A (en) * 1931-05-16 1934-07-31 Terrell Mach Co Pneumatic bobbin stripping apparatus and method
US2132344A (en) * 1936-03-16 1938-10-04 Terrell Mach Co Bobbin stripper
US2149778A (en) * 1937-11-24 1939-03-07 Terrell Mach Co Bobbin stripper
US2313785A (en) * 1938-12-28 1943-03-16 Harold R Turner Bobbin stripper
US2342909A (en) * 1942-07-17 1944-02-29 Terrell Mach Co Bobbin stripper
US2795030A (en) * 1954-12-29 1957-06-11 Stutz & Cie Device for removing the thread waste from bobbins
US2865081A (en) * 1956-11-13 1958-12-23 Moos Kaspar Apparatus for the removal of the reserve thread remainder from weft bobbins

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1190919A (en) * 1913-08-21 1916-07-11 James Smith Lanier Quill-cleaner.
US1968791A (en) * 1931-05-16 1934-07-31 Terrell Mach Co Pneumatic bobbin stripping apparatus and method
US2132344A (en) * 1936-03-16 1938-10-04 Terrell Mach Co Bobbin stripper
US2149778A (en) * 1937-11-24 1939-03-07 Terrell Mach Co Bobbin stripper
US2313785A (en) * 1938-12-28 1943-03-16 Harold R Turner Bobbin stripper
US2342909A (en) * 1942-07-17 1944-02-29 Terrell Mach Co Bobbin stripper
US2795030A (en) * 1954-12-29 1957-06-11 Stutz & Cie Device for removing the thread waste from bobbins
US2865081A (en) * 1956-11-13 1958-12-23 Moos Kaspar Apparatus for the removal of the reserve thread remainder from weft bobbins

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866278A (en) * 1973-10-25 1975-02-18 Leesona Corp Method and apparatus for the concurrent stripping of bobbins
US4035882A (en) * 1976-10-18 1977-07-19 The Terrell Machine Company Loom bobbin stripper
US4765043A (en) * 1985-10-16 1988-08-23 Murao Boki Kabushiki Kaisha Apparatus for removing residual rovings on roving bobbins
US5148665A (en) * 1990-04-28 1992-09-22 Kabushiki Kaisha Murao And Company Roving bobbin carrier system
US5220714A (en) * 1991-03-22 1993-06-22 Kabushiki Kaisha Murao And Company Apparatus for removing residual roving from roving bobbin

Also Published As

Publication number Publication date
CH470318A (de) 1969-03-31
FR1552601A (no) 1969-01-03
BE710056A (no) 1968-07-29

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