JPS601263B2 - Reel collar detection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting that a filament has been wound up to the reel flange when the filament is automatically wound in alignment on a reel.

Conventionally, in order to automatically align and wind a filamentous body onto a reel, the filament is wound onto a reel by a traverser that traverses on a traverse axis arranged parallel to the reel axis at a pitch equal to the outer diameter of the filamentous body. Generally, a method is adopted in which the filament to be spun is wound onto a reel while being engaged and guided to the feeding position.

At this time, correct detection of the fact that the filament has been wound up to the reel collar is extremely important in giving instructions for subsequent stopping, reversing, etc. of the traverser. Conventionally, this has been detected by a non-contact detection means such as a beam switch placed near the inside of both reel flanges facing over the reel body to detect the filament that begins to bulge along the reel flanges in order to form the next layer. This was done by optically detecting the body surface. However, the above method can accurately detect the ridge of the filament when the reel itself has relatively high dimensional accuracy, such as an iron reel. Accurate detection is impossible if the dimensional accuracy is low, such as with a wooden reel. In other words, in the case of a wooden reel, there is generally a considerable eccentricity in the reel 8 (a deviation between the rotation center of the reel and the same center of the reel), so that the surface of the filament wound around the reel body and the detection means may The distance between them changes as the reel rotates, and therefore, if the amount of eccentricity of the reel 8 exceeds the bran striae, it will result in a malfunction in the detection means. For example, when the eccentricity of the reel eye is one object (normally wooden reels have eccentricity of this order) and a filament with a diameter of 5 skins or less is wound, the detection means Even if there is no bulge in the striatum near the rim, the rise in the surface of the striatum due to the rotation of the reel is detected, resulting in erroneous detection.
The present invention has been made to eliminate the above-mentioned conventional drawbacks, and it is possible to always accurately detect the bulge of the filament at the edge of the reel, regardless of the dimensional accuracy of the winding reel. To provide a method for detecting a reel collar. For this reason, the present invention detects that the filament has been wound up to the reel flange by detecting a rise along the reel flange in order to form the next layer using a detection means placed near the reel flange facing the reel body. In the method by detecting the filament, the detection range of the detection means is limited to a part of the winding angle of the filament. To explain this with reference to the drawings, in order to wind the filament 4 on the reel 2 in an aligned and close manner, the winding start end of the filament is inserted and fixed into the attachment hole 6 of one reel collar, and the reel is driven by a drive source (not shown). While rotating in the direction of the arrow shown in the figure, the traverser 8 stacks and feeds the filament bodies at a feeding position at a pitch equal to the outer diameter of the filament bodies.

As a result, the filament is wound while closely adhering to the adjacent loop, but at this time, the portion where the winding loop of the filament transitions to the next winding loop (referred to as the transition area) is the "winding part" as shown in the figure. As the rotation is gradually advanced from one reel flange to the other reel flange, the filament is gradually displaced in the circumferential direction starting from the attachment port 6.Thus, the filament forms the final loop of the first layer. After that, the second layer starts to be formed from the transition part T of the final loop.Therefore, the rise (meaning the start of descent) of the filament at the edge of the other reel is caused by the formation of the final loop of the first layer. This occurs at the transition part and is detected by the detection means 10.The winding of the filament from the second layer onwards is performed by tracing the filament around the groove between the lower layer loops. The swell of the twill body in each layer occurs at the transition part of the striatum in the lower layer.Therefore, the swell of the twill body up to the final winding layer covers the entire range of the winding angle (3600). It does not occur over a certain range of the winding angle (for example, the shaded range in the figure) including the winding transition portion of each layer. The bulge occurs only in a narrow range including the winding transition part at the edge of each reel in the first layer.Therefore, in the present invention, the bulge of the overall strip body at the edge of each reel is The detection range of the detection means 10 for detecting the winding angle is not carried out over the entire range of the winding angle as in the conventional case, but instead, the detection range of the detection means 10 is not carried out over the entire range of the winding angle as in the conventional case. limited to a certain range that includes the indicated range.

As a result, the detection means 10 detects the swelling of the striae at the edge of the reel even if the distance between the surface of the striae and the detection means 10 due to the rotation of the reel changes due to the rotation of the reel. Can be detected correctly. for example,
As shown, reel rotation center ○, reel body center 0
If there is an eccentricity e between the detecting means 10 and the surface of the filament body wound around the reel cylinder, the separation distance between the detecting means 10 and the surface of the filament body wound around the reel cylinder will vary by 2e due to one rotation of the reel, but this can be According to the invention, if the detection range of the detection means is limited to, for example, a range of about 900 degrees, the variation in the separation distance between the linear body surface and the detection means can be reduced to about the same amount as e. Therefore, in this case, if the outer diameter of the linear body is larger than Yume e, correct detection can be performed regardless of the eccentricity of the reel Tsukioka. Of course,
The above detection range does not need to detect the bulge of the filament over the entire reel; it is only necessary to detect the bulge of the winding loop closest to each reel collar, so each reel in the first layer It is also possible to limit the detection range to a narrow range including the winding transition part at the brim.In the present invention, in order to limit the detection range of the detection means 10 as described above, for example, as shown in FIG. When the filament is wound up to the vicinity of the reel collar by the traverse base 8 that engages and guides the engagement, the mitt switch 12 is installed correspondingly to the vicinity of the reel collar, and the mitt switch 12 and the traverse base 8 engage. The limit switch 14 engages with the reel hoe in response to a signal from the limit switch, and the limit switch 14 detects a point on the reel axis corresponding to the mounting port 6 of the reel collar, which corresponds to the detection point. ,
Based on the detection signal, the detection means 10 provided at the edge of each reel and the pulse transmitter 16 provided on the reel shaft are activated simultaneously, and the above detection is performed when the pulse transmitter measures a predetermined rotation angle of the reel koji. The detection operation of the means 10 may be stopped. Note that the detection means 10 is the same as the conventional detection means, and is spaced apart from the reel body by the outer diameter of the filament as the number of wound layers increases. As described above, according to the present invention, it is possible to accurately detect the bulge of the filament at the reel brim regardless of the eccentricity of the reel body when the filament is wound in an aligned manner on the reel. Even in the case of a reel with relatively low dimensional accuracy, malfunction of the detection means can be prevented, and the IJ-ru collar can be detected with high precision.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a part of the winding device for explaining the reel flange detection method according to the present invention, and FIG. 2 is a side view of FIG. 1, with some parts omitted for convenience of explanation. FIG. 2... Reel, 4... Striatum, 10... Detection means, 1
4...Limit switch, 16...Pulse transmitter,
T... Winding transition part. Hair Diagram 2

Claims (1)

[Claims] 1. In order to automatically align and wind the filamentous body on the reel, it is detected that the filamentous body has been wound up to the reel flange by means of a detection means placed near the reel flange facing the reel body. In the detection method, the detection range of the detection means is limited to at least a part of the winding angle including a winding transition part of the filament at the edge of the reel. A method for detecting a reel flange, characterized in that this prevents malfunction of the detection means due to eccentricity of the reel body.