Yarn winding machine and yarn winding method

Abstract

An object of the present invention is to provide a yarn winding machine and a yarn winding method which allow a saddle bag shape phenomenon to be very effectively dissolved even if a reference winding angle is reduced in response to high-order requirements such as a yearn type. A yarn winding mechanism (winder) (11) includes a roller (31) contacting with a package (18) during a package forming period (P1) for synthetic fiber yarn (Y), a traverse device (21) allowing a traverse speed to be changed and repeating temporarily increasing the traverse speed from a reference speed (V1) to a target speed (V2) and then reduce the traverse speed down to the reference speed (V1), and free length changing means (41) for allowing free length (FL) of the synthetic fiber yarn (Y) between the roller (31) and the traverse device (21) to be changed and repeating free length change so as to temporarily increase and then reduce the free length FL. A traverse speed changing period (T2) during which the traverse speed change is performed matches or overlaps a free length changing period (F2) during which the free length change is performed.

Description

technical field

[0001] The present invention relates to a yarn winding machine and a yarn winding method for winding yarn, such as synthetic fiber yarn, onto a bobbin to form a package. Background technique

[0002] For example, a yarn winder that is a yarn winder is provided with a traverse guide device including a traverse guide that reciprocates in the axial direction of the bobbin. In addition, a structure is adopted in which the bobbin is rotated while contacting the touch roller or the friction roller, and the package is wound up while cross-winding the yarn. However, since the yarn density is concentrated at the turn-back parts of the yarn at both ends of the package, there is a problem that the package ends are raised higher than the center portion (ear height), and the package becomes drum-shaped. If the raised portion occurs, there is a problem of unwinding failure when the yarn is unwound from the package in the subsequent process.

[0003] In order to eliminate...

Examples

Embodiment 1

[0036] use below Figure 1 to Figure 8 The winder 11 as the yarn winding machine according to the first embodiment of the present invention will be described. The winder 11 of the first embodiment is a device for winding a synthetic fiber yarn Y as a yarn around a bobbin 17 to form a package 18 . In addition, although a yarn winding machine for winding synthetic fiber yarns is described below, the present invention is not limited thereto, and may be a yarn winding machine for winding textile fiber yarns such as cotton yarns.

[0037] Such as figure 1 As shown, the winder 11 includes a body frame 12 on which a slide box 42 that can be raised and lowered relative to the body frame 12 and a turntable plate 14 that is rotatable relative to the body frame 12 are provided. The turntable plate 14 can rotate around the rotating shaft 15 under the drive of a rotating drive device (not shown in the figure). Two bobbin holders (bobbin holders) 16 to which bobbins 17 are attached protr...

Embodiment 2

[0063] use below Figure 9 and Figure 10 The winder 11 as the yarn winding machine according to the second embodiment of the present invention will be described. The biggest difference between the second embodiment and the first embodiment is that the knuckle suppression mechanism is provided in addition to the winder 11 of the first embodiment. Detailed description of the same parts as those in Embodiment 1 is omitted.

[0064] The knurling suppression mechanism is a well-known mechanism in the prior art, and is to eliminate the knurling of the package 18 like Figure 9 This is a mechanism for gradually changing the diagonal weave angle in the early stage P2 and the late stage P3 of the package forming period P1 as shown. The twill angle at this time is the reference twill angle A1 determined by upper factors such as the type of synthetic fiber yarn Y. Therefore, the burr suppression mechanism is a mechanism for changing the reference diagonal angle A1. In the early sta...

technical field

[0001] The present invention relates to a yarn winding machine and a yarn winding method for winding yarn, such as synthetic fiber yarn, onto a bobbin to form a package. Background technique

[0002] For example, a yarn winder that is a yarn winder is provided with a traverse guide device including a traverse guide that reciprocates in the axial direction of the bobbin. In addition, a structure is adopted in which the bobbin is rotated while contacting the touch roller or the friction roller, and the package is wound up while cross-winding the yarn. However, since the yarn density is concentrated at the turn-back parts of the yarn at both ends of the package, there is a problem that the package ends are raised higher than the center portion (ear height), and the package becomes drum-shaped. If the raised portion occurs, there is a problem of unwinding failure when the yarn is unwound from the package in the subsequent process.

[0003] In order to eliminate...

Examples

Embodiment 1

[0036] use below Figure 1 to Figure 8 The winder 11 as the yarn winding machine according to the first embodiment of the present invention will be described. The winder 11 of the first embodiment is a device for winding a synthetic fiber yarn Y as a yarn around a bobbin 17 to form a package 18 . In addition, although a yarn winding machine for winding synthetic fiber yarns is described below, the present invention is not limited thereto, and may be a yarn winding machine for winding textile fiber yarns such as cotton yarns.

[0037] Such as figure 1 As shown, the winder 11 includes a body frame 12 on which a slide box 42 that can be raised and lowered relative to the body frame 12 and a turntable plate 14 that is rotatable relative to the body frame 12 are provided. The turntable plate 14 can rotate around the rotating shaft 15 under the drive of a rotating drive device (not shown in the figure). Two bobbin holders (bobbin holders) 16 to which bobbins 17 are attached protr...

Embodiment 2

[0063] use below Figure 9 and Figure 10 The winder 11 as the yarn winding machine according to the second embodiment of the present invention will be described. The biggest difference between the second embodiment and the first embodiment is that the knuckle suppression mechanism is provided in addition to the winder 11 of the first embodiment. Detailed description of the same parts as those in Embodiment 1 is omitted.

[0064] The knurling suppression mechanism is a well-known mechanism in the prior art, and is to eliminate the knurling of the package 18 like Figure 9 This is a mechanism for gradually changing the diagonal weave angle in the early stage P2 and the late stage P3 of the package forming period P1 as shown. The twill angle at this time is the reference twill angle A1 determined by upper factors such as the type of synthetic fiber yarn Y. Therefore, the burr suppression mechanism is a mechanism for changing the reference diagonal angle A1. In the early sta...

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