US2611548A - Yarn traverse for yarn winding machines - Google Patents

Description

3 Sheets-Sheet 1 IN V EN TOR. Edwazd dfiezfzer E. J. HEIZER YARN TRAVERSE FOR YARN WINDING MACHINES Sept. 23, 1952 Filed July 9', 1949 Sept. 23, 1952 E. J. HEIZER YARN TRAVERSE FOR YARN WINDING MACHINES 3 Sheets-Sheet 2 Filed July 9, 1949 INVENTOR. Edward JA e-A'Zer W w ATTORNEY Sept. 23, 1952 E. J. HEIZER YARN TRAVERSE FOR YARN WINDING MACHINES Filed July 9, 1949 5 Sheets-Sheet 5 INVENTOR- Edward 'Jfiez'zer BY ATTORNEY Patented Sept. 23, 1952 YARN TRAVERSE FOR YARN WINDING MACHINES Edward J. Heizer, Mountain Lakes, N. .L, assignor to Specialties Development Corporation, Belleville, N. J., a corporation of New Jersey Application July 9, 1949, Serial No.103,934

15 Claims. 1

The present invention relates to winding machines and the like and, more particularly, to an improved yarn traverse for such machines.

The primary object of the present inventionis to provide a machine for winding yarn in an extraordinarily rapid manner to produce packages, bobbins, cones or quills of excellent quality.

Another object is to provide such a machine wherein the traverse is adapted to be operated at extremely high speeds.

Another object is to provide such a machine which is relatively quiet in operation and free from undue vibrations.

Another object is to provide such a machine which is simple and economical in construction, and which can withstand prolonged operation with a minimum amount of supervision, maintenance and repair.

Another object is to provide such a machine wherein the yarn traverse rapidly reverses the yarn.

Another object is to provide a yarn traverse with close control of the yarn which eliminates or greatly minimizes the formation of .stitches at the ends of a package or the like.

Another object is to provide a yarn traverse which facilitates guiding the yarn thereto. 7

Another object is to provide a yarn traverse wherein reciprocating parts are eliminated.

Another object is to provide a yarn traverse wherein the traverse members are extremely light in weight and are balanced dynamically to facilitate vibrationless high speed rotation.

A further object is to provide a machine of the foregoing character which is adapted to wind a large variety of yarns at speeds varying over a wide range, the speed selected being that most advantageous and economical for a given type of yarn.

Other and further objects of the invention will be obvious upon an understanding of the illustrative embodiment about to be described, or will be indicated in the appended claims, and various advantages not referred to herein will occur to one skilled in the art upon employment of the invention in practice.

In accordance with the invention, the foregoing objects may be accomplished by providing an improved yarn traverse which generally comprises a pair of members having surfaces constructed and arranged to provide an endless slit in which the yarn is passed back and forth, and drive means for rotating these members including shafts and gears operated by a common drive shaft.

More specifically, the traverse members are generally conical and are mounted at an angle with respect to each other. These members have cam surfaces which are in the form of a coneshaped double spiral to provide'in effecta conical heart cam, and are so formed to facilitate guiding the yarn therebetween and to eifect. rapid reversal of the travel of the yarn.

An embodiment of the invention has been chosen for purposes of illustration and description, and is shown in the accompanying drawings, forming a part of the specification, whereini Figure 1 is a side view, partly in section, of a yarn winding machine in accordance with the invention.

Figure 2 isa top view of the yarn traverse of the winding machine.

Figure 3 is a schematic view, illustrating the path of the yarn from a source to a package being wound.

Figure 4 is an exploded perspective view of the traverse elements in accordance with the invention, the elements being shown in substantially the same position asin Figures 1 and 2.,

Figure 5 is a top'view of the traverse elements illustrating the relation of the yarn thereto as it is being moved towards one end of the package.

Figure 6 is a topview of the traverse elements illustrating the relation of the yarn thereto just as it has reached the endof the package.

Figure '7 is a top view ofthe traverse elements illustrating the relation of the yarn thereto after it has reached the end of the package and is being moved in a reverse direction.

Figure 8 is a schematic view illustrating the manner in which the yarn'is laid on the package in utilizing the apparatus of the present invention.

Referring .to the drawings, and more particularly to Figures 1 and 2 thereof, there is shown, by way of example, a yarn winding machine of the type for producing yarn packages or'the like. The machine generallycomprises a base iii, an upright bracket I l on the base, a spindle l2 supported by the bracket for Winding. a yarn package M which may be tubular as shown or, conical if desired, and a traverse head or mechanism IE on the base positioned beneath thespindle. The spindle and traverse mechanism are operated by a source ofpower adapted to be applied to a pulley IE which is operatively connected to the spindle and traverse mechanism by suitable gears and/or pulleys and belts or the like (not shown) to effect rotation of the spindle and movement of the traverse mechanism to wind and traverse the yarn, respectively. Since such drive connecting means are well known and do not constitute a part of the present invention, illustration or detailed description thereof is believed to be unnecessary.

The traverse mechanism generally comprises a substantially hollow Y-shaped housing 28 having a depending leg 2| and pair of upwardly and outwardly extending arms 22 deposed at an angle of 120 to the leg and to each other, a traverse member 24 rotatably supported on each of the arms (Figures 1 to 7), a cover or casing 25 for the housing, a pressure roller 26, for contacting the package being wound, mounted on the cover (Figures 1 to 3), and means 21 for supporting the leg 21 and for raising or lowering the traverse mechanism with respect to the spindle 12 (Figure 1).

The leg 2| of the housing 20 has bearings 29 therein for rotatably supporting a shaft 38. The shaft has its lower end operatively connected for rotation to the drive pulley 16 (not shown) and has a bevel gear 31 at its upper end. Each arm 22 of the housing 28 has bearings 32 therein for rotatably supporting a stud shaft 34. Each shaft 34 has a traverse member 24 connected to the upper outer end thereof and has a bevel gear 35 adjacent its lower inner and adapted to mesh with the bevel gear 35 of the other shaft 34. One of the shafts 34 has a bevel gear 35 at its lower end adapted to mesh with the bevel gear 31 whereby the shafts 34 are in driven connection with the shaft 30 for rotation inthe same direction about axes in a common plane.

As illustrated schematically in Figure 3, the yarn Y to be wound is supplied by a source 40. is passed through guide means 41 and 42, tensioning means 44, and is engaged by the members 24 to traverse the same as about to be described in detail. In order to admit the yarn within the traverse mechanism, one side of the cover or casing 25 has a slit 45 at the middle thereof (Figure 2) through which the yarn passes. The traversed yarn leaves the casing 25 by way of a rectangular slot or opening 46 in the top thereof above which the roller 26 is positioned.

In Figure 4, a pair of traverse members 24 are shown in detail apart from the drive mechanism, but positioned substantially in the same relationship in which they are shown in Figures 1 and 2. The members 24 or cams, as they may be called, have cooperating surfaces providing an endless slit in which the yarn is passed back and forth or traversed upon rotation of the members. Since the members 24 are practically identical, a description of one of them will be suificient to understand the construction thereof.

The member 24 has a relatively thin-walled, generally conical, cup-shaped, body 49 and has a circular closed end 50 provided with a hub 51 for receiving and connecting the upper end of the shaft 34. The member 24 has a generally double spiral yarn guiding surface 52 at the free edge of the body which preferably is constructed and arranged to provide a substantially conical heartshaped cam surface. More particularly, this surface has a pointed portion 54 and has a substantially V-shaped notch 55 opposite the portion 54. The portion of the member 24 providing one side of the notch 55 is recessed progressively at the top thereof to form a lip 56 adapted to cooperate with the pointed portion 54 of the other member 24 as will be described hereinafter. The body of the member 24 has a plurality of cut out portions 4 or apertures 51 therein which reduce the mass of the member and facilitate dynamic balancing of the members 24. This may be accomplished. by counterweighted portions rotatable with the members 24. For example, as shown in Figure 1,. the gears 35 may have counterweights 38 thereon positioned diametrically opposite the pointed pertions 54 of the cam or traverse members 24 where-- by the center of mass of the members 24 and their rotating means is in effect at the axes of the shafts 34. This permits high rotation of the traverse members without vibration.

When a pair of members 24 is arranged as illustrated and described herein (Figures 1 and 4) the top side of the body of each member is tangentially disposed to a common plane, for

example, a horizontal plane at the top side of the bodies 49, and such plane is at right angles to a vertical'plane in which the axes of the shafts 34 are disposed. In this manner, a slit is provided between the cam surfaces 52 on the free edges of the cam members 24 at the top side (adjacent the aforesaid horizontal plane), and, upon rotation of the members 24, the slit acts as the opening of a guide which moves back and forth with respect to the axis of the spindle whereby the cam surfaces providing the slit traverse the yarn as it is being wound on a package, tube, cone or bobbin.

In accomplishing the foregoing, the cam surface of each of the members 24 alternately acts as a leading and a trailing edge of the slit. That is, the cam surface of one member leads the yarn from the right to the left and the cam surface of the other member trails the yarn without contacting the same, but, upon completion of right to left movement of the yarn, the trailing edge contacts the yarn and becomes the leading edge for moving the yarn from the left to the right while the previous leading edge now becomes the trailing edge. In other words the surfaces 52 alternately shear the yarn back and forth as it is wound on the package.

The cooperation of the cam members in the aforesaid manner is illustrated in Figures 5 to 7, and, more particularly, such cooperation is illutrated before, at and after the direction of traversing movement of the yarn is reversed from left to right.

In Figure 5, the surface 52 of the cam member 24 at the right is acting as the leading edge to move the yarn from right to left, such movement almost being completed as the yarn is approaching the pointed portion 54.

In Figure 6, the yarn has reached the tip of the pointed portion 54 and right to left movement thereof has been completed. The lip 56 of the cam member 24 at the left has now moved under the tip of the portion 54 of the cam member at the right, and, as the yarn passes over the tip,

'the edge of the lip instantaneously engages the yarn to lead it from the left to the right as shown in Figure 7. The same cooperation between the lip and tip takes place at the extreme movement of the yarn to the right and Iieedn'ot be illustrated or described in view of the foregoing.

The construction and arrangement of the tip and lip as illustrated and described herein provides for the quick reversal of the direction in which the yarn is moved by the traverse mechanism. Such quick reversal is highly advantageous because the occurrences of stitches at the sides or ends of the package are eliminated. This is accomplishedbecause the yarn'direction is reversed so quickly'that it is laid while tens'ioned at the side edges of the package to grip the layer of yarn underneath (Figure 8). In this manner the yarn at the sides of the package does not slip off the layers of yarn beneath the same toform stitches.

Winders in accordance with the present invention are adapted to be operated at extraordinarily high speeds to provide yarn packages of better quality than those wound at lower speed on previous winders. For example, the spindle or its equivalent may be rotated 6,000 revolutions per minute, and the cams 24 may be geared to rotate from 1,000 to 1,500 revolutions per minute to provide a precision package having a traverse of from 2 to 3 spirals of yarn across its face.

In the following table examples are given of packages produced by a package winder in accordance with the present invention.

From the foregoing description, it will be seen that the present invention provides an improved winder which is simple and economical in construction and is highly effective inoperation. The present invention eliminates the use of reciprocating parts which are noisy and produce undesirable vibrations, and can therefore be operated at extraordinarily high yarn winding and traverse speeds. The mass of the traverse members and the moving parts associated therewith is reduced to a minimum thereby facilitating dynamic balancing thereof which in turn permits rotation of the traverse members at the high speeds indicated herein. The winder reduces yarn breakage to a minimum, and can withstand continuous usage over long periods without repairs or replacement of parts.

While the present invention has been illustrated and described in connection with a package type winder wherein the traverse and spindle are positively driven by interconnected drive means, it will be understood that the traverse in accordance with the invention may be advantageously utilized in drum type winders wherein the cam or traverse members would serve to rotate a package in frictional contact therewith and supported on a freely rotatable spindle.

It will also be appreciated that the traverse in accordance with the present invention is adapted for use in connection with other types of winding machines, such as, for example, filling or quill winders or the like.

As various changes may be made in the form, construction and arrangement of the parts herein, without departing from the spirit and scope of the invention and without sacrificing any of its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in any limiting sense.

I claim:

1. A yarn traverse for a winding machine comprising'a support, a pair of shafts mounted on said support at an angle with respect to each other, a gear on each of said shafts in meshing relation with the other, a generally conical cupshaped member having a generally conical heartshaped yarn guiding edge surface mounted on each of saidshafts constructed and: arranged to cooperate withi'each other and provide an endless slit inwhich'yarnis adapted to be passed back and forth, a drive shaft. .on said support, and a gear on said drive shaft in meshing'relation with one of said gears on one of said pair of shafts. V

2. A yarn traverse for a winding machine comprising a support, a pair of shafts mounted on said support atan angle with respectto each other, a gear on each of said shafts in meshin relation with the other, a generally conical cupshaped member having a generally conical heartshaped yarn guiding edge surface mounted on each of said shafts constructed and'arranged to cooperate with each otherand provide an endless slit in which yarn is adapted to be passed back and forth, a drive shaft on said support, a gear on said drive shaft in meshing relation with one of said gears on one of said pair of shafts, and weight means mounted on each of said pair of shafts for dynamically balancin said cup-shaped members.

3. A yarn traverse for a winding machine comprising a pair of opposed generally conical cam members having generally complementary heartshaped cam surfaces cooperating to pass yarn back and forth, and means for mounting each of said members for rotation about an axis disposed at an angle to the axis of the other, whereby a yarn guiding opening is provided between said surfaces.

4. A yarn traverse for a winding machine comprising a pair of opposed hollow generally conical members each formed with a generally heartshaped cam surface at the free edge thereof complementary to each other and cooperating to pass yarn back and forth, said cam surfaces each having a leading edge for moving the yarn in one direction and having a trailing edge cooperating with the leading edge of the other surface to guide the yarn, and means for respectively mounting said members for rotation about axes disposed in a common plane and arranged at an angle to each other to permit the sides of said member to rotate tangentially to a common plane at right angles to the plane in which said axes are disposed, whereby a yarn guiding opening is provided between the respective leading and trailing edges of said cam surfaces for directing the yarn to points along the intersection of said planes.

5. In a yarn traverse for a winding machine, a generally conical rotatable member having a heart-shaped yarn guiding edge surface provided with a pointed portion and a substantially V- shaped notch portion opposite said pointed portion, said notch portion being formed with a lip at one side thereof extending outwardly of said yarn guiding edge surface.

6. A yarn traverse for a winding machine comprising a pair of substantially identical cam members having a heart-shaped yarn guiding surface provided with a peak and a dwell opposite each other, means for rotatably mounting said members for movement independently of each other with the surfaces thereof adjacent and facing each other to provide an endless slit therebetween moving along a line in a given plane, said members being so positioned on said means that in only a given rotative position the peak of one cam member surface faces the dwell of the other cam member surface and that in only another rotative position the peak of the other cam member surface faces the dwell of the first mentioned cam memberl surface, and means for rotating said cam members at the same speed.

7. A yarn traverse for a winding machine comprising a pair of substantially identical cam members having a heart-shaped yarn guiding surface provided with a peak and a dwell, means for rotatably mounting said members with the sur-' faces thereof adjacent and facing each other. to provide an endless slit therebetween, said members being so positioned on said means that in a given rotative position the peak of one,'cam member surface faces the dwell of the other cam member surface, and means for. rotating said cam members at the same speed, said mountin means each including ashaft, said shafts having their axes of rotationpositioned in a common plane at an angle to each .other.

8. A yarn traverse for a winding machinecomprising a pair of substantially identical cam mem. bers having a heart-shapedyarn guiding surface provided with a peak and a diametrically opposite dwell, means for rotatably mounting said members with the surfaces thereof adjacent and facing each other to provide an endlessr-slit therebetween, said members being sopositioned on said means that in a given rotative position the peak of one cam member surface faces the dwell of the other cam member surface, andmeans for rotating said cam members at the same speed, said cam members each having a lip at one side of said dwell extending outwardly of said yarn guiding surface and constructed and arranged to be-positioned in overlapping relation with the peak-of the other cam member. 7

9. A yarn traverse for a winding machine comprising a pair of substantially identical cam'members having a heart-shaped yarn guiding surface provided with apeak and a dwell, means for rotatably mounting said members with the surfaces thereof adjacent and facing each other to provide an endless slit therebe'tween, said members being so positioned on said means that-in a given rotative position the peak of one cam member surface faces the dwell of the other cam member surface, and means for rotating said cam members at the same speed, said mounting means each including a shaft, said shafts having their axes of rotation positioned in a common plane at an angle to each other, said cam members being generally conical and each having a side wall inclined at a predetermined angle with respect to the axis of rotation of its shaft, said predetermined angleand the angle at which said shaft axes are disposed being such that the sum of twice said predetermined angle and said shaft axes angle is 180.

10. A yarn traverse for a winding. machine,

comprising a pair of substantially.identicalgenerally conical cam members each having a side wall inclined at an angle of about 30 with respect to the longitudinal axis thereof, said sidewalls each being provided with a heart-shaped yarn guiding edge surface at the base thereof formed with a peak and a dwell, means for rotatably mounting said members with the surfaces-thereof adjacent and facing each other to provide an endless slit therebetween and with the axes of said members disposed at an angle of about said members being so positioned on said means that in a given rotative position the peak of one cam member surface faces the dwell of the other cam member surface, and means for rotating said cam members at the same speed.

11. A yarn traverse for a winding machine comprising a pair of adjacent cam members having complementary generall heart-shaped cam surfaces, and means for mounting each of said members for rotation about an axis disposed at an angle to the axis of the other with the axes in the same plane and for positioning said members to provide a yarn guiding opening between said surfaces whereby said members are arranged to pass the yarn back and forth along a line in the plane in which the axes are located.

12. A yarn traverse according to claim 11, wherein each of said cam member surfaces has a pointed portion and a substantially V-shaped notch portion opposite said pointed portion, and said cam members are arranged for relative rotation in such a manner that the pointed portion of one cam member cooperates with the notch portion of the other cam member.

13. A yarn traverse according to claim 12, wherein each cam member surface has a lip at one side of said notch portion adapted to underlie said pointed portion of the other cam member and to cooperate therewith to reverse the direction in which the yarn is traversed.

14. A yarn traverse according to claim 11, wherein said cam members are of generally conical cup-shape and said cam surfaces are at the free edges thereof.

15. A yarn traverse according to claim 14, wherein said cam surfaces include generally pointed portions and notch portions substantially diametrically opposite said pointed portions.

EDWARD J. HEIZER.

REFERENCES CITED The following referencesare of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,543,519 Reiners June 23, 1925 1,928,365 Anderson I Sept. 26, 1933 2,044,621 McHugh June 16, 1936 2,151,327 Moncrieif Mar. 21, 1939 2,249,147 Kuppers July 15, 1941 2,352,781 Fletcher July 4, 1944 FOREIGN PATENTS Number Country Date 472,386 Germany Feb. 27, 1929 611,253 France July 3, 1926

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