JPH0667459U - Winder - Google Patents

Abstract

(57) [Summary] [Construction] The present invention relates to a winder having means for moving the end face drop prevention member E upward as the winding diameter of the package P increases. [Effect] Regardless of the winding diameter of the package, it is possible to prevent the cut yarn from jumping out beyond the end face drop prevention member and winding the cut end around the machine base of the winder or the bobbin supporting shaft. Therefore, it is possible to reduce the occurrence of defective packages.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a winder for traversing a yarn wound around a spun yarn or the like and rewinding it into an appropriate package such as a cone or a chase.

[0002]

[Prior art]

 Conventionally, it is known that the end face drop prevention member is attached to the machine base of the winder so that it is located near the lower end of the traverse device.

[0003]

[Problems to be solved by the device]

 When the traversed yarn is cut during winding, the cut yarn jumps out beyond the traverse width, and the cut end is wound around the machine base of the winder or the bobbin support shaft, causing a defective package. Was there. In order to prevent such cut yarns from jumping out beyond the traverse width, conventionally, an end face drop prevention member is attached to the winder base so that it is located near the lower end of the traverse device. I'm wearing it.

However, as the winding diameter of the package increases, the distance from the end face drop prevention member attached to the machine base of the winder to the contact point between the yarn into which the yarn is wound and the package increases. When the winding diameter of the package becomes large, for example, if the yarn is cut near the contact point between the yarn and the package, etc., the yarn still protrudes past the end face drop prevention member and the cut end Will wind around the machine base of the winder or the bobbin support shaft.

An object of the present invention is to solve the problems of the conventional winder as described above, and to provide a winder capable of reliably preventing the end face drop of the yarn.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a winder with means for moving the end face drop prevention member upward as the winding diameter of the package increases.

Before describing the embodiments of the present invention, first, as a traversing device, a cone-shaped package (hereinafter, simply referred to as “cone”) is contacted to rotate and drive the cone and the surface thereof. A conventional rotary traverse winder that uses a cylindrical drum that traverses a yarn by an engraved groove and a rotary traverse winder that has a movable guide member to which an end face drop prevention member according to an embodiment of the present invention is attached will be described. To do.

FIGS. 4 and 5, which are schematic side views of the essential parts of a conventional rotary traverse winder, and FIGS. 5 and 5 showing the positional relationship between a cylindrical drum having a traverse groove on the surface in the X direction and a cone. The problem of the conventional rotary traverse winder will be described with reference to FIG.

In FIG. 4, D is a cylindrical drum (hereinafter, simply referred to as “grooved drum”) that comes into contact with the cone P to rotate and drive the cone P, and traverses the yarn with grooves cut on the surface. ). The cone P is supported by a well-known cradle arm A, and the cradle arm A is shown by a chain line from the position supporting the small diameter cone P in the winding start state shown by the solid line around the point Ca. It is configured to rotate in a clockwise direction with an increase in winding diameter in a direction in which the large-diameter cone P being supported is supported. At the winding start position shown by the solid line, the cone P is arranged so as to be located on a substantially vertical line connecting the center point Cp of the cone P and the center point Cd of the grooved drum D, and the yarn Y The center point Cp of the cone P is configured to rotate clockwise around the rotation center point Ca of the cradle arm A as it is wound.

In the winding start state, the yarn Y, after engaging with the grooved drum D at the point a, comes into contact with the bottom D ′ of the groove, comes out of the grooved drum D at the point b, and is wound around the cone P. Taken away. Therefore, the yarn Y is engaged with the grooved drum D by the angle α in the winding start state. On the other hand, when the diameter of the cone P increases as the winding progresses, after engaging with the grooved drum D at the point a, the bottom D'of the groove is contacted and the groove D from the grooved drum D 1 at the point c. It comes out and is wound up on the cone P. Therefore, when the yarn Y is wound and the diameter of the cone P is increased, the yarn Y is engaged with the grooved drum D by the angle γ, and the yarn Y is wound and the cone P is wound. As the diameter increases, the angle at which the yarn Y engages with the grooved drum D increases.

Further, along the line connecting the center points Cd and Cp of the grooved drum D and the cone P, respectively, the positional relationship between the grooved drum D and the cone P viewed from the arrow X on the grooved drum D side is shown. 5, when the yarn Y is wound on the cone P, the contact point c on the line connecting the center points Cd and Cp of the grooved drum D and the cone P, respectively. ′ Substantially coincides with the large diameter portion Pd of the cone P and the nose portion end portion Dn of the grooved drum D.

By the way, as described above, when the yarn Y is wound around the cone P, the contact point c ′ on the line connecting the center points Cd and Cp of the grooved drum D and the cone P is almost At a point c ′ that coincides with the large diameter portion Pd of P and the end portion Dn of the nose portion of the grooved drum D, the yarn Y is disengaged from the end portion Dn of the nose portion of the grooved drum D and folded back to be wound on the cone P. If so, the problem such as the twisting or the defective shape of the cone P as described below does not occur, but in general, as shown in FIGS. 4 and 6, the nose end Dn of the grooved drum D is generally prevented. At the time when the transition from the contact point c'on the line connecting the center points Cd and Cp of the grooved drum D and the cone P to the point c, the yarn Y is disengaged from the nose end Dn of the grooved drum D. Sometimes.

As shown in FIG. 6, the nose end Dn of the grooved drum D is moved from the contact point c ′ on the line connecting the center points Cd and Cp of the grooved drum D and the cone P, respectively. Since the transition point c is located off the large-diameter portion Pd of the cone P to the end Pt side of the cone P, the yarn Y jumps out from the end surface Pf of the cone P, causing a so-called twill deviation. Become. Further, the point c where the yarn Y deviates from the end Dn of the nose portion of the grooved drum D is larger than that of the cone P with respect to the contact point c ″ between the yarn Y and the cone P where the yarn Y is wound around the cone P. Since the yarn Y is located on the side of the end Pt of the cone P from the diameter Pd, the yarn Y is pulled in the direction of the end Pt of the cone P, and thus the edge Pe of the cone P has a sharp shape. Therefore, the cone P loses its shape or the yarn Y is not released properly, which causes a problem.

Next, a rotary traverse winder having a movable guide member to which the end face drop prevention member of the embodiment of the present invention, which can solve the above-mentioned problems, will be described.

In FIG. 1, g is a guide member arranged in parallel along the axis of the grooved drum D, and the guide member g is a link rotatable about the center point Cd of the grooved drum D. It is attached to the tip of r1. Further, one end of the link r2 is pivotally attached at approximately the middle of the link r1, and the other end of the link r2 is pivotally attached to the tip of a link r3 which rotates about the rotation center point Ca of the cradle arm A. Has been done. The link r3 that rotates around the rotation center point Ca of the cradle arm A is linked to the cradle arm A that rotates clockwise as the winding diameter of the cone P increases, and the winding diameter of the cone P also increases. Is configured to rotate clockwise in accordance with an increase in

Next, the operation of the guide member g will be described. At the beginning of winding the cone P, the guide member g is located near the lower end of the grooved drum D as shown by the solid line in FIG. The link r 1 also rotates clockwise in conjunction with the cradle arm A that rotates clockwise as the winding diameter increases, so that the guide member g is also indicated by the dotted line via the links r2 and r3. It will rotate upward as shown. Since the yarn Y also moves upward as shown by the dotted line when the guide member g is rotated upward, the position at which the yarn Y engages the grooved drum D is point a'above point a. Therefore, the engagement range between the yarn Y and the grooved drum D is reduced as compared with the conventional one. As described above, in the present invention, the engagement angle γ between the yarn Y and the grooved drum D when the winding diameter is increased is such that the yarn Y and the grooved drum D at the beginning of winding the yarn Y are different from each other. The winding angle of the winder is kept constant at a constant engagement angle α.

Further, since the guide member g is rotated clockwise in accordance with the increase in the winding diameter to move the yarn Y upward along the grooved drum D, the winding diameter is increased. The engagement range between the yarn Y and the grooved drum D in the case of being twisted is reduced as compared with the conventional one, and the angle formed by the yarn Y and the perpendicular line orthogonal to the axis of the grooved drum D is made smaller than the conventional one. Since the yarn Y is larger than that of the grooved drum D, the yarn Y easily comes off the groove of the grooved drum D, and the point c in FIGS. 4 and 6 is on the line connecting the center points Cd and Cp of the grooved drum D and the cone P, respectively. It will move in the direction of the point c '. Therefore, as described above, the contact point between the grooved drum D and the cone P on the line connecting the center points Cd and Cp of the grooved drum D and the cone P, the large diameter portion Pd of the cone P and the grooved drum, respectively. At a point c ′ where the end Dn of the nose part of D 1 coincides, the yarn Y is separated from the end Dn of the nose part of the grooved drum D, folded back, and wound up on the cone P. As the method approaches, it is possible to solve the problems of the conventional winder, such as the twisting or the cone P having a sharp edge Pe.

In the above description, the links r1 to r3 are rotated in conjunction with the cradle arm A to move the guide member g. The turning can be detected by a sensor and the guide member g can be driven by an appropriate independent drive source such as a motor.

[0019]

【Example】

 Next, an embodiment of the present invention will be described, but the present invention is not limited to this embodiment without departing from the spirit of the present invention. Based on FIG. 2 which is a schematic front view of the winding portion of the winder in which the end face drop preventing member of the yarn y is attached to the guide member g and FIG. 3 which is a perspective view of the end face drop preventing member and the like, The end face drop prevention member of the attached yarn y will be described. As described above, when the conventionally wound yarn Y is cut during winding, the cut yarn Y jumps out beyond the traverse width, and the cut end is the shaft of the grooved drum D or Or, a defective cone was generated around the bobbin supporting shaft. In order to prevent the cut yarn Y from jumping out beyond the traverse width, conventionally, the end face drop prevention member E is placed in the vicinity of the lower end portion of the grooved drum D so that the winder machine can be used. It is attached to the table.

However, as the winding diameter of the cone P increases, the yarn Y is wound from the end face fall prevention member E attached to the machine base of the winder onto the cone P, and the contact point between the yarn Y and the cone P is reached. Since the distance to c ″ becomes long, when the winding diameter of the cone P becomes large, for example, when the yarn Y is cut near the contact point c ″ between the yarn Y and the cone P, The yarn Y still protrudes beyond the end face drop prevention member E, and the cut end winds around the shaft of the grooved drum D or the bobbin supporting shaft.

Therefore, the end face drop prevention member E is attached to the above-described guide member g that rotates clockwise in conjunction with the cradle arm A that rotates as the winding diameter increases. The distance from the member E to the contact point c ″ between the yarn Y where the yarn Y is wound around the cone P and the cone P is always substantially constant.

With this configuration, even when the yarn Y is cut at the time when the winding diameter of the cone P becomes large, the yarn Y jumps out beyond the end face drop prevention member E, and the cut end is cut into the groove. It is possible to prevent winding around the shaft of the attached drum D or the bobbin supporting shaft, etc. Therefore, it is possible to reduce the occurrence of defective cones.

Although the end face drop prevention member E itself has a known structure, its structure will be described with reference to FIG. Reference numerals 1 and 1'represent a substantially triangular front plate of the end face drop prevention member E, and 2 is a back plate disposed behind the front plates 1 and 1'with a predetermined distance from the front plates 1 and 1 '. The front plate 1, 1 ′ and the back plate 2 are attached to the side plates 3, 3 ′ of the end face drop prevention member E. The opposite ends of the side plates 3 and 3'to which the front plates 1 and 1'and the back plate 2 are attached are attached to the guide member g by suitable fasteners such as screws 4 and 4 '. Is configured. The front plate 1, 1 ', the back plate 2, and the side plates 3, 3'are preferably integrally formed of synthetic resin or the like. 2 and 3, reference numeral 5 is a known yarn guide member for guiding the yarn Y.

As described above, the end face drop prevention member E is attached to the guide member g that rotates clockwise in conjunction with the cradle arm A that rotates as the winding diameter increases. Even when the yarn Y is cut when the winding diameter becomes large, the yarn Y jumps out beyond the end face drop prevention member E, and the cut end is wound around the shaft of the grooved drum D or the bobbin supporting shaft. It is possible to prevent sticking and thus reduce the occurrence of defective cones.

In the above embodiment, the end face drop prevention member E is moved upward in association with the movement of the guide member g that rotates clockwise in conjunction with the cradle arm A. Alternatively, the winding diameter of the cone P may be detected by an appropriate sensor, and an appropriate actuator may be driven by this detection signal to move the end face drop prevention member E upward.

[0026]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects.

Regardless of the size of the winding diameter of the package, it is possible to prevent the cut yarn from jumping out beyond the end face drop prevention member and the cutting end from winding around the machine base of the winder or the bobbin supporting shaft. Therefore, it is possible to reduce the occurrence of defective packages.

[Brief description of drawings]

FIG. 1 is a schematic side view of a main part of a winder having a guide member.

FIG. 2 is a schematic front view of a winding portion of a winder in which an end face drop prevention member is attached to a guide member.

FIG. 3 is a perspective view of an end face drop prevention member and the like.

FIG. 4 is a schematic side view of a main part of a conventional winder.

5 is an arrangement relationship diagram of a grooved drum and a package viewed from the X direction in FIG.

FIG. 6 is a layout diagram of the grooved drum and the package viewed from the X direction in FIG.

[Explanation of symbols]

 D ・ ・ ・ ・ Drum with groove E ・ ・ ・ ・ End face drop prevention member P ・ ・ ・ ・ ・ ・ Package g ・ ・ ・ ・ ・ ・ Guide member

Claims (1)

[Scope of utility model registration request] 1. A winder comprising means for moving an end face drop prevention member upward with an increase in a winding diameter of a package.