JPH08104470A - Bobbin - Google Patents

Abstract

PURPOSE: To provide a bobbin for which it is not necessary to exchange the bobbin supporting member of a winding device even if the kinds of yarns are different. CONSTITUTION: A bobbin main body 2 is formed into a cylindrical shape. A spacer 5 formed into a doughnut shape is inserted into one end opening of the bobbin main body 2. A turning-up forming part 3 is formed on the other end opening 2c. The inside diameter of a perforated hole 5a of a spacer 5 and the inside diameter of the other end opening 2c formed by the turning-up forming part 3 are so constituted as to be approximately equal to the outside diameter of an inserting part 13a in an attachment 13 of a winding device 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin mounted on a winding device for winding a yarn.

[0002]

2. Description of the Related Art For example, there is a winding device incorporated in a twisting machine or the like to wind a yarn after finishing twisting. The bobbin is clamped between a pair of attachments, which are spaced apart bobbin supporting members of the winding device, and the bobbin is rotated to wind the yarn around the bobbin. . The bobbin also has a paper tube, but it is generally made of synthetic resin because of its durability for reuse. The bobbin has a cylindrical shape, and an insertion portion of an attachment having an outer diameter corresponding to the inner diameter of the bobbin is inserted into both end openings of the bobbin so as to be clamped and fixed by both attachments.

Conventionally, this bobbin has a different thickness due to the difference in the twisting method and the denier of the wound yarn (even for single yarns having different thicknesses, the finished product has the same outer diameter). Therefore, since the wall thickness is the same,
Along with that, there are multiple types of inner diameter. Therefore,
As for the attachment of the winding device, a plurality of kinds of attachments whose outer diameters correspond to the inner diameters of different bobbins are prepared, and the attachments can be appropriately replaced according to each bobbin.

[0004]

However, since a single twisting machine incorporates a large number of winding devices, it is necessary to replace a large number of attachments for each type of yarn. The replacement work was troublesome.

Further, conventionally, in order to distinguish the type of yarn wound around a bobbin, an identification tag such as a sticker indicating specifications such as a twisting method and denier is attached to a wound product. Therefore, this sticking work is troublesome, and a seal must be prepared for each type of yarn, resulting in high cost.

The present invention has been made by paying attention to the problems existing in the above-mentioned prior art, and its first object is to:
It is an object of the present invention to provide a bobbin that does not require replacement of the bobbin supporting member of the winding device even if the type of yarn is different. A second object is to provide a bobbin that achieves the first object and does not need to be attached with an identification tag for identifying the type of yarn.

[0007]

In order to achieve the first object, in the invention of claim 1, a bobbin is inserted into a bobbin supporting member provided in a winding device to wind a yarn. There is a cylindrical bobbin body having an inner diameter larger than the outer diameter of the bobbin supporting member, and the bobbin main body is provided in openings at both ends of the bobbin supporting member so that the bobbin supporting member has substantially the same outer diameter. The bobbin comprises inner diameter adjusting means for adjusting the inner diameters of the openings at both ends.

In the invention of claim 2, the inner diameter adjusting means provided in at least one of the inner diameter adjusting means provided in the openings at both ends has an outer diameter substantially the same as the inner diameter of the bobbin main body. A donut-shaped spacer having an inner diameter substantially the same as the outer diameter of the bobbin supporting member.

In order to achieve the second object, in the invention of claim 3, the bobbin is colored in a color according to its outer diameter.

[0010]

In the invention of claim 1 having the above structure, the bobbin is
The bobbin supporting member provided in the winding device is mounted via the inner diameter adjusting means, and the bobbin is rotated by the driving of the winding device, and the yarn is wound on the bobbin.

The inner diameter of the bobbin is kept constant by the inner diameter adjusting means even if the outer diameter of the bobbin varies depending on the type of the wound yarn. Therefore, it is not necessary to replace the bobbin supporting member of the winding device for each type of yarn.

According to the second aspect of the present invention, if spacers are inserted into the openings at both ends of the bobbin body as inner diameter adjusting means,
The bobbin body can be molded with a conventional bobbin molding die, and the cost can be reduced. Further, if the spacer is inserted into only one opening and the inner diameter adjusting means of the other end opening is formed integrally with, for example, the bobbin main body, it is a separate member as compared with the structure in which the spacer is inserted into the both end openings. The number of spacers is reduced, leading to a reduction in the assembly process.

According to the third aspect of the present invention, different coloring is applied according to the different outer diameters of the bobbins, that is, depending on the type of the thread to be wound. Therefore, the type of yarn can be discriminated by the color difference, and it is not necessary to attach an identification tag indicating the specifications of the yarn as in the conventional case.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. First, the winding device 11 to which the bobbin 1 of this embodiment is mounted will be described. As shown in FIG.
The winding device 11 is incorporated in a twisting machine (not shown) or the like, and winds the yarn S discharged from the machine onto the bobbin 1. Reference numeral 13 denotes a pair of attachments as bobbin supporting members for holding the bobbin 1 in the bobbin supporting portion 12 provided on the winding device 11. The attachment 13 has a cylindrical insertion portion 1
3a and a flange portion 13b which is attached to one end opening of the insertion fitting portion 13a and has a disk shape having a diameter larger than that of the insertion fitting portion 13a.

The two attachments 13 have their bobbin supporting portions 12 so that their insertion portions 13a face each other.
It is rotatably attached to. Reference numeral 14 is a lever, and by operating this lever, the interval between the attachments 13 is widened or narrowed. 15 is bobbin 1
2 shows a positively rotatable drive roller that is brought into contact with the outer peripheral surface of the.

Next, the bobbin 1 will be described. As shown in FIGS. 1 and 2, the bobbin main body 2 is integrally molded of synthetic resin and has a cylindrical shape. On the surface of the bobbin main body 2, as shown in the enlarged view in the circle of FIG. 1, the grooves 2a are formed at minute intervals so as to extend along the circumferential direction.
Are formed. By forming the groove 2a, the thread S wound around the surface of the bobbin main body 2 is locked in the longitudinal direction of the bobbin 1.

In the bobbin main body 2 of this embodiment, one end opening 2b (left side in FIG. 2) has the attachment 13
The inner diameter is larger than the outer diameter of the insertion portion 13a. Further, the other end opening 2c has a shape in which an edge portion is folded back inward, and the folded back portion forms a folding back forming portion 3 as an inner diameter adjusting means. By forming the folded-back forming portion 3, the inner diameter of the other end opening 2c of the bobbin main body 2 is substantially the same as the outer diameter of the insertion portion 13a of the attachment 13. Further, when the bobbin main body 1 is molded, by mixing a colorant into the resin material, the bobbin main body 1 is colored C according to its outer diameter.

The spacer 5 which forms an inner diameter adjusting means together with the folded-back forming portion 3 has a donut shape, and its outer diameter is the same as the inner diameter of the one end opening 2b of the bobbin body 1. Further, the inner diameter of the through hole 5a formed in the central portion is substantially the same as the outer diameter of the insertion portion 13a. The spacer 5 is inserted into the one end opening 2b side of the bobbin main body 2 to form the bobbin 1 of this embodiment. A step portion 2d is formed on the inner peripheral surface of the bobbin main body 2 on the side of the one end opening 2b, and the diameter of the same end opening 2a side is slightly larger than the depth. The step portion 2d locks one outer peripheral edge of the spacer 5 to prevent the spacer 5 from entering the inner side of the bobbin main body 2.

Next, a procedure for mounting the bobbin 1 on the winding device 11 will be described. As shown in FIG. 3, by operating the lever 14 of the winding device 11, the interval between the attachments 13 is expanded and the bobbin 1 can be mounted. In this state, open the both ends of the bobbin 1 (the through holes 5a and 2c of the spacer 5) into the insertion portion 13 of the attachment 13.
It is arranged so as to correspond to a. Then, the reverse operation of the lever 14 narrows the interval between the attachments 13 and the insertion portions 13 a are inserted into the openings at both ends of the bobbin 1.
Further, both end surfaces of the bobbin 1 are sandwiched and fixed by the flange portion 13b, and the bobbin 1 is held and fixed by the bobbin supporting portion 12 of the winding device 11 (shown by a chain double-dashed line in FIG. 3).

By the positive rotation of the drive roller 15, the bobbin 1 whose peripheral surface is in contact with the peripheral surface of the drive roller 15 is driven to rotate, and the yarn S discharged from the twisting machine is bobbin 1.
Is wound around the outer peripheral surface of. At this time, the guide member 16 of the winding device 11 is positively reciprocated in the longitudinal direction of the drive roller 15, and the yarn S guided by the guide member 16 is
The bobbin 1 is wound obliquely with respect to the circumferential direction.

As the yarn S is wound around the bobbin 1, the outer diameter of the bobbin 1 gradually increases. The bobbin supporting portion 12 is supported so as to be movable upward from the drive roller 15 as the outer diameter of the bobbin 1 increases. Due to its own weight, the bobbin supporting portion 12 constantly presses the peripheral surface of the bobbin 1 against the peripheral surface of the driving roller 15 against the upward movement of the bobbin supporting portion 12 due to the increase in the outer diameter of the bobbin 1. It is like this.

Conventionally, as the bobbin for winding the yarn S having the same specifications as the yarn S, one having the same outer diameter as the bobbin 1 of this embodiment is generally used. However, since the inner diameter thereof is larger than the inner diameter of the bobbin 1 of this embodiment (about the inner diameter of the one end opening 2b of the bobbin main body 2), the attachment 1 is required to mount the bobbin on the bobbin supporting portion 12.
3 must be exchanged. That is, the attachment 13 is for holding a bobbin that winds a yarn having specifications different from those of the yarn S in general.

However, in the present embodiment, the spacer 5 is inserted into the one end opening 2b of the bobbin main body 2, and the folded back forming portion 3 is formed in the other end opening 2c so that the attachment member 13 can be handled. It is configured. Therefore, the bobbin 1 of this embodiment can be mounted without replacing the attachment 13, and the trouble of replacing the attachment 13 one by one as in the conventional case is eliminated.

In this embodiment, the bobbin body 2
Only the other end opening 2c side is formed with a small diameter by integral molding. Ideally, the bobbin body 2 is formed with folding-back forming portions 3 on both open sides 2b and 2c so that the inner diameter adjusting means is formed integrally with the bobbin body 2. However, due to molding reasons, the other end opening 2c
It can only be formed on the side.

That is, although not shown, the bobbin main body 2 is formed by using a cylindrical female mold corresponding to its outer shape and a cylindrical male mold corresponding to its inner diameter. Therefore, after molding, the male mold must be pulled out from the molded product. Therefore, it is possible to form a mold for forming the folded-back forming portion 3 only on the tip portion of the male die (corresponding to the other end opening 2c). Therefore, in this embodiment, the other end opening side 2
The folding-back forming portion 3 is integrally formed only on c.

In this way, the other end opening 2c of the bobbin main body 2 is formed.
In addition, by integrally forming the folded-back forming portion 3 as the inner diameter adjusting means, the number of the spacers 5 as separate components can be reduced to one. Thereby, for example, the number of parts can be reduced and the assembly process can be reduced as compared with a bobbin as shown in another example (1) (two spacers) described below.

Further, the bobbin 1 of the present embodiment is colored C with a color corresponding to its outer diameter (the type of the thread S to be wound). Therefore, it is not necessary to attach an identification tag such as a sticker for discriminating the type of yarn as in the conventional case, and it is possible to save the attaching work and the sealing cost.

In addition, within the scope of the present invention,
It can be implemented in the following modes. (1) The bobbin body 2 of the above-described embodiment is omitted from the configuration of the folded-back forming portion 3 of the other end opening 2c, and the spacer 5 is provided at both end openings.
Be inserted. By doing so, the mold structure for molding the bobbin main body 2 can be simplified. Alternatively, a conventional molding die for manufacturing a bobbin can be used. (2) Apply the coloring C with paint after the bobbin main body 2 is molded. In this case, the whole may be colored, or both edges may be colored. (3) In the above embodiment, the bobbin body 2 may not be colored, and the spacer 5 may be colored differently for each type of yarn. (4) The inner diameter may be made constant by changing the wall thickness according to the different thickness (outer diameter) of the bobbin 1. In this way, the male mold for molding can be shared. (5) In the above embodiment, the other end opening 2 of the bobbin main body 2
The inner diameter adjusting means provided in c was the folded-back forming portion 3 having a shape in which the edge portion was folded back. Change this,
The vicinity of the other end opening 2c may be thickened. (6) The bobbin body 2 is made of paper. If it does in this way, it can manufacture at low cost.

The technical ideas other than the claims that can be understood from the above-described embodiments will be described. (1) The bobbin body 2 according to any one of claims 1 to 3, wherein the bobbin main body 2 is made of resin. By doing so, the durability is improved as compared with the case of using paper, and it can be reused.

[0030]

According to the inventions of claims 1 and 2 having the above-mentioned structure, even if the outer diameters of the bobbins are different, it is not necessary to replace the bobbin supporting member of the winding device, which leads to a reduction in labor.

According to the third aspect of the present invention, it is not necessary to attach an identification sticker for each type of yarn, and the attaching work and the cost of the sticker can be saved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a bobbin, in which a circle is an enlarged view of the surface.

FIG. 2 is a vertical sectional view of a bobbin.

FIG. 3 is a perspective view of the winding device.

[Explanation of symbols]

1 ... bobbin, 2 ... bobbin main body, 2b ... one end opening, 2c ...
Opening at the other end, 3 ... Fold-back forming portion as inner diameter adjusting means,
5 ... Spacer, 11 ... Winding device, 13 ... Attachment as bobbin supporting member, C ... Coloring, S ... Thread.

Claims (3)

[Claims] 1. A bobbin in which a thread is wound by being inserted into a bobbin supporting member provided in a winding device, the cylindrical bobbin main body having an inner diameter larger than an outer diameter of the bobbin supporting member, A bobbin, which is provided in both openings of the bobbin main body, and comprises inner diameter adjusting means for adjusting the inner diameters of both end openings of the bobbin main body so as to be substantially the same as the outer diameter of the bobbin supporting member. 2. The inner diameter adjusting means provided in at least one of the inner diameter adjusting means provided in the both end openings has an outer diameter substantially the same as the inner diameter of the bobbin main body, and The bobbin according to claim 1, wherein the bobbin is a donut-shaped spacer having an inner diameter substantially equal to an outer diameter. 3. The bobbin according to claim 1, wherein the bobbin is colored in a color according to its outer diameter.