JPH0986792A - Traverse mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning machine with a traverse mechanism having a resin made cylindrical cam and a resin made slide member for mounting a traverse guide engaged with the groove of the cylindrical cam. SOLUTION: A plurality of cylindrical cams 4 are supported on a shaft 1. The cylindrical cams 4 are formed out of a resin such as polyester. On the other hand, a slide member 7 is slidably held on a guide bar 5 and a guide rail 6. Also, a holder 9 for holding a slide guide 10 and an engagement part engaged with the grooves 4a of the cylindrical cams 4 are mounted on the slide member 7. This slide member 7 is formed out of a resin containing a lubricant (e.g. molybdenum disulfide contained polyamide). Furthermore, when the cylindrical cams 4 rotate, the slide member 7 travels in an arrow A direction, guided by the guide bar 5 and the guide rail 6, and a traverse guide 10 causes yarn taken up around a package to traverse.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traverse mechanism that traverses a traverse guide with a cylindrical cam.

[0002]

2. Description of the Related Art Conventionally, in a spinning machine, a mechanism for winding a yarn on a package while traversing the yarn has a plurality of traverse guides attached to one shaft, and the shafts themselves reciprocate in a constant amplitude in the axial direction. There is something to do. As a drive mechanism for the shaft, there is a mechanism in which one end of the shaft is provided with an engaging portion that engages with the groove of the cylindrical cam, and the rotational movement of the cylindrical cam is converted into reciprocating movement of the shaft.

[0003]

However, in the traverse mechanism as described above, in order to reciprocate the long shaft itself along the axial direction, when the motion direction of the reciprocating motion is reversed, the shaft and the cylinder are reciprocated. Noise is generated at the engaging portion with the cam. In addition, when the movement direction is reversed, the shaft may bend and the yarn may come off the traverse guide. Particularly, when the spinning speed is as high as 300 mm or more, the above problems become remarkable.

[0004]

In order to solve the above problems, the invention of claim 1 provides a cylindrical cam which is rotationally driven, a traverse guide which is engaged with a groove of the cylindrical cam, and a traverse guide. A traverse mechanism that comprises a guide means for guiding the traverse guide in the axial direction of the cylindrical cam, and traverses the yarn by reciprocating the traverse guide in the axial direction of the cylindrical cam by the rotation of the cylindrical cam. It is characterized in that the cylindrical cam is made of resin. According to the invention of claim 1, since the cylindrical cam is formed of resin, it is possible to reduce the weight of the cylindrical cam.

The invention according to claim 2 is characterized in that a plurality of the cylindrical cams are attached to the same rotatable shaft. According to the invention of claim 2,
Since the shaft supporting a plurality of cylindrical cams provided in the traverse mechanism of each weight of the spinning machine can be shared, the structure of the traverse mechanism can be simplified.

According to a third aspect of the present invention, the traverse guide is attached to a slide member having an engaging portion for engaging with the groove of the cylindrical cam and a sliding contact portion for sliding contact with the guide means. The slide member is formed of a resin mixed with a lubricant. According to the invention of claim 3, the frictional resistance between the guide means and the slide member is reduced, and it is not necessary to fill the traverse mechanism with lubricating oil or grease.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a traverse mechanism of the present invention, and FIG. 2 is a front view showing an outline of an embodiment of a traverse mechanism of the present invention. The shaft 1 is supported by bearings 2 provided at predetermined intervals,
A gear mechanism G is attached to one end so as to be able to receive rotation from the motor M. The bearing 2 is a stay 3 attached to the machine base of many spinning units U of the spinning machine.
It is fixed to. And the shaft 1 between each bearing 2
A cylindrical cam 4 formed of resin (for example, polyester) is attached to the. A right spiral spiral groove 4a and a left spiral spiral groove 4a are continuously formed on the surface of the cylindrical cam 4.

The slide member 7 is formed of a resin (for example, polyamide) mixed with a lubricant (for example, molybdenum disulfide), and the formed slide member 7 is a sliding contact portion with the guide bar 5. A guide hole 7a and a guide groove 7b which is a sliding contact portion with the guide rail 6 are provided. On the other hand, the guide bar 5 and the guide rail 6 are made of metal with respect to the slide member 7 made of resin. By molding the slide member 7 with a resin mixed with a lubricant, the frictional resistance between the slide member 7 and the guide bar 5 and the frictional resistance between the slide member 7 and the guide rails 6 are It is small enough without using it.

The guide bar 5 and the guide rail 6 which are the guide means of the slide member are installed along the installation direction of the shaft 1, and the guide bar 5 is mounted on the bearing 2.
The guide rail 6 is attached to the stay 3. Further, an engaging portion 8 (see FIG. 3) that engages with the groove 4 a of the cylindrical cam 4 is attached to the slide member 7, and a traverse guide 10 is attached via a holder 9.

The contact surface 8a of the engaging portion 8 is a curved surface that can uniformly contact the bottom surface of the groove 4a. Then, the traverse guide 10 guides the yarn Y sent from the yarn supplying means (not shown). The yarn Y is wound on the package P which is rotated by the rotation of the friction roller 11. The line shaft 12 to which the friction roller 11 is attached is provided on the machine base so that its axial direction is along the axial direction of the shaft 1.

Next, the operation of the traverse mechanism of this embodiment will be described. When the motor starts rotating, the shaft 1 that receives the rotation of the motor and the cylindrical cam 4 attached to the shaft 1 also start rotating. At this time, the groove 4a (in engagement relationship with the engagement portion 8) located between the guide bar 5 and the guide rail 6 is provided on the cylindrical cam 4 in the right spiral shape and the left spiral shape as described above. Therefore, the shaft 1 moves relative to the package P in the axial direction of the shaft 1 (direction of arrow A).

On the other hand, the slide member 7 engaged with the groove 4a via the engaging portion 8 is slidably supported by the guide bar 5 and the guide rail 6. Therefore, when the groove 4a moves in the direction of the arrow A as described above, the slide member 7 moves in the direction of the arrow A via the engaging portion 8, and the traverse guide 10 integrally attached to the slide member 7 also Move in the direction of arrow A. As a result, the yarn Y is traversed by the rotation of the friction roller 11 and wound around the package P while traversing.

Further, in the traverse mechanism of this embodiment, if the stay 3 is separated from the machine base of the spinning machine and a drive mechanism for swinging the stay 3 in the direction of arrow A is provided,
It is possible to prevent the height of the ears generated at both ends of the package P.

[0014]

As described above, according to the present invention, the traverse guide engaged with the groove of the cylindrical cam supported by the rotatable shaft is slid in the axial direction of the cylindrical cam to form the yarn. In a traverse mechanism that winds around a package while traversing, a cylindrical cam is molded with resin, and a lubricant is mixed into a slide member to which the traverse guide and an engaging portion that engages with the groove of the cylindrical cam are attached. The traverse mechanism itself can be made lighter by molding the resin. As a result, the diameter of the shaft to which the cylindrical cam of the traverse mechanism is attached for each unit of the spinning machine having a large number of spinning units can be reduced, and the drive energy required to drive the traverse mechanism can be reduced. You can

Further, since it is not necessary to fill the traverse mechanism with lubricating oil or grease, the problem that the yarn wound around the package is contaminated by the lubricating oil or grease and the quality of the package is degraded can be solved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a traverse mechanism of the present invention.

FIG. 2 is a schematic view showing an embodiment of a traverse mechanism of the present invention.

FIG. 3 is a partial sectional view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 shaft 4 cylindrical cam 4a groove 5 guide bar (guide means) 6 guide rail (guide means) 7 slide member 7a guide hole (sliding contact portion) 7b guide groove (sliding contact portion) 8 engaging portion 10 traverse guide Y yarn

Claims (3)

[Claims] 1. A traverse guide, comprising: a rotationally driven cylindrical cam; a traverse guide engaged with a groove of the cylindrical cam; and guide means for guiding the traverse guide in the axial direction of the cylindrical cam. A traverse mechanism for traversing a yarn by reciprocating in the axial direction of the cylindrical cam by the rotation of the cylindrical cam, wherein the cylindrical cam is made of resin. 2. The traverse mechanism according to claim 1, wherein the plurality of cylindrical cams are mounted on the same rotatable shaft. 3. The traverse guide is attached to a slide member having an engaging portion that engages with the groove of the cylindrical cam, and a sliding contact portion that slides in contact with the guide means. The traverse mechanism according to claim 1 or 2, wherein the traverse mechanism is formed of a resin mixed with a lubricant.