US3681908A - Spindle brake - Google Patents

Spindle brake Download PDF

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Publication number
US3681908A
US3681908A US62082A US3681908DA US3681908A US 3681908 A US3681908 A US 3681908A US 62082 A US62082 A US 62082A US 3681908D A US3681908D A US 3681908DA US 3681908 A US3681908 A US 3681908A
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US
United States
Prior art keywords
brake
yoke
components
brake components
braking
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
Application number
US62082A
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English (en)
Inventor
Kurt Hohloch
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen 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 Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Application granted granted Critical
Publication of US3681908A publication Critical patent/US3681908A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/22—Braking arrangements
    • D01H7/2208—Braking arrangements using mechanical means
    • D01H7/2225—Braking arrangements using mechanical means the braking means surrounding nearly the whole periphery of the whorl

Definitions

  • ABSTRACT A manually operable brake assembly which straddles and, when actuated, frictionally engages a cylindrical such as a spindle, and which comprises two identical brake components provided with friction faces and a resilient yoke having the function of holding said braking components together, supplying the braking force and ensuring that the brake assembly is stably maintained in both its operative and m m w w m m m m g m. m w .I m .m .2 MX www W 1 I. 5 lhl 8 n "w m m.
  • spindles which are used in spinning or twisting machines, or similar textile machines, for the twisting and winding of elongated textile materials, particularly yarns.
  • a spindle of this type comprises a bearing sleeve which is fixedly secured to a spindle rail, and on which there is rotatably held an upper spindle part.
  • Textile machines usually have a very large number of such spindles which have to be braked individually and independently from one another, for example, in case of yarn breakage, or the like.
  • the spindle brake assembly is formed of two brake components pivotally secured to a stationary part of the spindle and movable into a braking or actuated position and into a released or withdrawn position.
  • the brake components together form an arcuate, concave work face which frictionally engages the rotary upper spindle part in the braking position.
  • the brake assembly further includes a resilient yoke which has three functions: it holds the brake components together, it supplies the braking force and it stably maintains the brake components in a withdrawn and in an actuated position.
  • FIG. 1 is a perspective fragmentary view of a spindle incorporating a first embodiment of a brake assembly according to the invention, shown in a withdrawn or released position;
  • FIG. 2 is a view similar to FIG. 1 showing the first embodiment in an actuated or braking position
  • FIG. 3 is a bottom plan view of the first embodiment in a released position
  • FIG. 4 is a bottom plan view of the first embodiment in an actuated position
  • FIG. 5 is a top plan view of a spindle incorporating a second embodiment of a brake assembly according to the invention.
  • FIG. 6 is a partially sectional side elevational view of the second embodiment shown in a braking or actuated position
  • FIG. 7 is a sectional view along lines VIIVII of FIG.
  • FIG. 8 is a partially sectional side elevational view of the second embodiment shown in a withdrawn or released position.
  • FIG. 9 is a sectional view along lines IX-IX of FIG. 8.
  • FIGS. 1 and 2 there is illustrated a spinning or twisting spindle 10 which, with the exception of the associated brake assembly later to be described, may be of any known structure. It comprises a bearing sleeve 11 and an upper spindle part 12 rotatably held on said sleeve.
  • the upper spindle part 12 includes a cylindrical whorl 13, which is in contact with a tangential drive belt, or the like, to supply, in a known manner, the necessary torque to rotate the upper spindle part.
  • a lower portion of the whorl forms a rotationally symmetrical frictional face of the upper spindle part against which the brake shoes of a brake assembly 14 may be pressed.
  • the brake assembly 14 includes two brake components 15 and 16 which together form a brake lever and which are the mirror images of each other with respect to a plane of symmetry containing the spindle axis.
  • the components 15 and 16 may be made entirely or partially of synthetic material and may be prepared, for example, by injection molding.
  • the brake components 15 and 16 include a respective brake shoe 17 and 18 and a respective extension 19 and 20. The latter are planar and constitute the operating handle of the brake assembly.
  • Each brake component 15, 16 further includes a respective arm 21 and 22 which extend approximately at right angles to the plane of extensions 19, 20. In the free end of each arm 21, 22 there are inserted inwardly extending and mutually axially aligned pivot pins 23 which nest in depressions provided in the bearing sleeve 11 for pivotally supporting the brake components 15 and 16.
  • the pivotal axis 24 of the brake assembly 14 is defined by the two pivot pins 23 and depressions in which they nest, and it extends normal to the spindle axis at a distance therefrom.
  • the brake shoes 17, 18 in the released condition of the brake and the pivotal axis 24 are disposed at opposite sides of a plane containing the spindle axis and extending parallel to the pivotal axis 24.
  • the brake components 15 and 16 are elastically pressed to one another and held together by means of a resilient yoke 26 formed of a bent wire spring. It extends in a preloaded condition from the outer side of one arm 21 and then proceeds arcuately along the underside of the extensions 19, 20 to the outer side of the arm 22.
  • a resilient yoke 26 formed of a bent wire spring. It extends in a preloaded condition from the outer side of one arm 21 and then proceeds arcuately along the underside of the extensions 19, 20 to the outer side of the arm 22.
  • the free end portions thereof nest in grooves provided in the outer face of arms 21 and 22, as best seen in FIGS. 3 and 4.
  • the free ends of the yoke 26 are bent at right angles inwardly and extend into properly aligned-bores provided in the arms 21, 22.
  • Each brake shoe l7 and 18 is provided with a respective bonded brake lining 31, 30, the concave cylindrical work face of which has a radius of curvature identical to that of the outer face of the cylindrical whorl 13. In this manner the entire inner face of the brake lining serves as the work face of the associated brake component.
  • Each individual brake lining 30, 31 extends over an angle of approximately 90.
  • the brake shoes 17, 18 straddle the whorl 13 over an angle of more than 180.
  • the two arms 21, 22 are manually separated from one another to an extent that the pivot pins 23 move out of their respective support bores.
  • the brake 14 may then be pulled off entirely.
  • This structure permits a replacement of a damaged part without the necessity of replacing the entire brake 14. Such assembly and disassembly may be performed rapidly even by unskilled labor.
  • FIGS. 5-9 there is shown a second embodiment of the invention.
  • the bearing sleeve 11" of the spindle 10 is fixedly secured to a conventional spindle rail 44.
  • the upper spindle part 12 is rotatably held on the bearing sleeve 11" and has a whorl 13' which is engaged by a driving belt (not shown) for rotating the part 12'.
  • the whorl 13 is provided with an integral lower collar 33, the outer periphery of which serves as a friction face engageable by the cylindrical brake faces 35, 36 of two diametrically opposed brake components 15', 16' for braking the rotary spindle part 12'.
  • the brake components 15', 16' are mirror images of one another with respect to a plane containing the spindle axis.
  • the brake components 15' and 16' are held together, urged to one another and maintained in a bistable position by a resilient yoke 26.
  • Each brake component 15', 16' may be a single part made of plastic material or any other material which has good braking properties and a satisfactory strength.
  • the two brake components 15 and 16 have a blocklike configuration; their braking faces 35 and 36 extend in the upper part of their inner sides. Under the brake faces 35, 36 at a distance therefrom, each brake component 15, 16 is provided with a pin 37, 38, respectively, extending inwardly and tapering towards it free end.
  • the pins 37 and 38 extend into a respective cylin-' drical support bore 39, 40, both provided in an upper collar 41 of the bearing sleeve 11".
  • the axes of the support bores 39, 40 are in alignment with one another and intersect the spindle axis at
  • the respective underside 42, 43 of the brake components 15 16' is planar and so designed that each engages the top face of the spindle rail 44 face-to-face when the brake assembly is in its withdrawn position as illustrated in FIG. 9.
  • the conically tapering pins 37, 38 permit the brake components 15, 16' to tilt inwardly from their position shown in FIG. 9 into a position shown in FIG. 7 in which the brake faces 35, 36 frictionally engage the periphery of the collar 33 to brake the upper spindle part 12.
  • the two brake components 15', 16 are held together by a resilient yoke 26' which also serves as a brake actuating lever pivotally movable by an attendant.
  • the yoke 26' has rounded free ends 46, 47 which engage with a small play into respective bores 50, 51 provided in'the brake components 15', 16'.
  • the bores 50, 51 are aligned with respect to one another in such a manner that the pivotal axis of yoke 26' extends at a distance from the spindle axis and is normal thereto. Further, the pivotal axis of yoke 26 is disposed on that side of the spindle axis which is remote from the central arc 52 of the yoke 26.
  • each brake component 15, 16' is provided with a respective flat triangular depression 53, 54, one comer of each coincides with the respective bore holes 50, 51.
  • the upper and lower edges of the triangular depressions serve as abutments for the two extreme positions of yoke 26' as shown in FIGS. 6 and 8.
  • At the upper edge of each triangular depression there is provided a groove-like notch 55, 56 into which the yoke 26' may snap when moved into its upper position (FIG. 6) in which the brake components 16' are maintained in a stable manner in their braking position (FIG. 7).
  • the respective base 59, 60 of each triangular depression 53, 54 has a convex curvature extending upwardly and outwardly.
  • each brake component 15', 16 has a pivotal axis which is substantially normal to the axis of its associated, respective bore hole in which tapered pivot pins 37, 38 nest.
  • the removal of the three-part brake assembly according to FIGS. 59 may be manually effected by spreading the yoke 26' and pulling it off the brake components 15', 16'. Thereafter, the brake components may be removed from the spindle 10.
  • the brake components 15, 16 (first embodiment) and 15', 16' (second embodiment) are so arranged that they form mirror images of one another with respect to a plane of symmetry containing the spindle axis.
  • each individual brake face passes through a plane that contains the spindle axis and is normal to the aforedefined plane of symmetry.
  • each brake work face engages the rotationally symmetrical outer face of the rotary upper spindle part along a circumferential distance which, expressed in angles, amounts preferably to approximately 50 100.
  • an extension integral with said arm portion and arranged at an angle with respect thereto, said extension having an upper face, an underside and a longitudinal edge face, said brake components being so arranged that the upper face of said extensions are coplanar and are engageable by an attendant to cause pivotal movement thereof,
  • each brake work face when said brake components are in said braking position, engages said rotationally symmoe rical surface over an angle of approximately 50 1 5.
  • said brake components are so arranged in said braking position, that each brake work face extends from both sides of a single plane containing the axis of said rotary member.
  • both brake work faces extend at one and the same side of said single plane when said brake components are in said withdrawn position.
  • each said arm includes edge portions which abut against a stationary surface when said brake components are in said withdrawn position.
  • securing means for pivotally attaching each brake component to a stationary part, said securing means including 1. two bore holes provided in said stationary part,
  • each brake component is pivotable into said braking position and into said withdrawn position about an axis normal to the axis of the associated bore hole
  • a resilient yoke straddling said brake components for securing them together and maintaining each said pivot pin in its associated bore hole, said resilient yoke urging said brake components towards one another in said braking position to furnish a braking force, opposed portions of said yoke riding on each said camming face during a pivotal motion of said yoke with respect to said brake components, the camming faces causing said yoke to spread and said brake components to pivot into said braking position when said yoke is moved into an actuated position, portions of said yoke snapping into each said notch in the actuated 1 position of said yoke to stably maintain said brak components in their braking position.
  • a brake assembly as defined in claim 1 wherein the axes of said bore holes coincide with one another and intersect the axis of said rotary member at right angles.
  • each camming face is provided with two abutment edges, one serving as a stop for said yoke in said actuated position, the other serving as a stop for said yoke in a released position in which said brake components are in their withdrawn position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Braking Arrangements (AREA)
US62082A 1970-02-06 1970-08-07 Spindle brake Expired - Lifetime US3681908A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702005463 DE2005463A1 (de) 1970-02-06 1970-02-06 Bremse einer Spinn- oder Zwirnspindel
US6208270A 1970-08-07 1970-08-07

Publications (1)

Publication Number Publication Date
US3681908A true US3681908A (en) 1972-08-08

Family

ID=25758612

Family Applications (1)

Application Number Title Priority Date Filing Date
US62082A Expired - Lifetime US3681908A (en) 1970-02-06 1970-08-07 Spindle brake

Country Status (5)

Country Link
US (1) US3681908A (enExample)
CH (1) CH519599A (enExample)
DE (1) DE2005463A1 (enExample)
FR (1) FR2079301B1 (enExample)
GB (1) GB1281806A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808790A (en) * 1973-07-23 1974-05-07 Saco Lowell Corp Spindle brake with articulated and detachable brake shoes
US5347802A (en) * 1989-10-19 1994-09-20 Fritz Stahlecker Spinning or twisting spindle
US5778650A (en) * 1995-12-30 1998-07-14 Palitex Project-Company Gmbh Device for stopping a spindle of a textile machine driven by a drive belt
CN114753027A (zh) * 2022-03-31 2022-07-15 江苏英迈杰机械有限公司 一种自锁式锭子刹车制动装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005002423A1 (de) * 2005-01-18 2006-07-27 Maschinenfabrik Rieter Ag Spindelbremse
DE102024113843A1 (de) * 2024-05-16 2025-11-20 Stego Holding Gmbh Bremse für rotierendes, zylindrisches Bauteil

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406512A (en) * 1966-12-27 1968-10-22 Schurr Stahlecker & Grill Spindle for spinning or twisting machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808790A (en) * 1973-07-23 1974-05-07 Saco Lowell Corp Spindle brake with articulated and detachable brake shoes
US5347802A (en) * 1989-10-19 1994-09-20 Fritz Stahlecker Spinning or twisting spindle
US5778650A (en) * 1995-12-30 1998-07-14 Palitex Project-Company Gmbh Device for stopping a spindle of a textile machine driven by a drive belt
CN114753027A (zh) * 2022-03-31 2022-07-15 江苏英迈杰机械有限公司 一种自锁式锭子刹车制动装置
CN114753027B (zh) * 2022-03-31 2023-05-23 江苏英迈杰机械有限公司 一种自锁式锭子刹车制动装置

Also Published As

Publication number Publication date
CH519599A (de) 1972-02-29
GB1281806A (en) 1972-07-19
FR2079301B1 (enExample) 1975-02-21
DE2005463A1 (de) 1971-08-26
FR2079301A1 (enExample) 1971-11-12

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