JPS606058Y2 - bobbin - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a bobbin for winding fiber yarn to form a package, which is then subjected to dyeing, heat treatment, etc.

A known cylindrical wire bobbin has an intermediate portion held by an annular body with a constant diameter, and as the number of wires increases in the circumferential direction, the contact friction between the wire and the annular body increases, making it difficult to expand or contract the length of the bobbin. In order to stabilize the shape, the wires are made thicker, the number of wires is increased, and the accuracy is increased, making it impossible to expand or contract.

The present invention cross-connects the bent portions of a plurality of cylindrical or truncated conical elastic bodies formed by bending a wire in a zigzag shape in the axial direction, maintains both ends at a constant diameter, and makes the connected portion contractible. It is held by an annular body to strengthen the shape of the intermediate part, and when the elastic body moves, the contact friction between the wire and the annular body is reduced, making it possible to easily change the length in the axial direction of the bobbin. .

In addition, for the truncated conical type, when the lower bobbin is moved toward the small diameter part of the package and the package is mounted on the spindle, the bobbin end without thread is inserted into the upper bobbin, and the upper end surface of the package is attached to the upper package. Since it makes contact with the bottom surface of the base, a spacer is not required and unnecessary work is omitted.

Furthermore, even if a spacer is used, it is only necessary to separate the packages, so a thin plate can be used and the number of packages mounted per spindle can be increased.

The drawings will be explained.

1 and 1' show an elastic body formed into a cylindrical shape by bending an elastic wire 2 in a zigzag shape in the axial direction, and 3 is the bent portion thereof.

The bent portions 1 and 1' are cross-connected, and the bent portions 3 at both ends are held by constant diameter rings 4.

The end of the central elastic body 1 is held by a C-shaped or discontinuous elastic ring 5 with a contractible diameter to reduce the contact resistance between the wire and the ring 5 in the axial direction during movement of 1 and 1'.

When the cylindrical shape is further strengthened, two rings 5 are used to hold the central ends of the elastic bodies 1, 1'.

Figure 2 is a perspective view of the cylindrical body constituting the bobbin in Figure 1;
3 is a connecting wire that holds the ring 4 and the bent part 3, and FIG. 3 shows the bobbin shown in FIG. 1 formed into a truncated cone shape (cone shape). It is an elastic body formed into a shape.

Unlike Fig. 1, Fig. 4 shows an elastic body 1 with bent parts facing each other.
1 and 1' are connected such that the bent part of ' is above the elastic ring 5 and below the bent part of the elastic body 1.

Regarding the operation, the bobbin shown in FIG. 1 is mounted on a holder and wound to form a package.

The holder is removed, the bobbins are axially contracted, and the bobbins are inserted into a spindle and stacked, followed by dyeing or heat treatment.

The cone on the small diameter side of the cone-shaped bobbin shown in FIG. 3 is held at the bottom by a contractible ring 5, so that it easily moves to the large diameter side.

The cone on the large diameter side is also open at its upper end, so the contact area between the thread and the wire is small, and the contact resistance of the wire ring 5 is also reduced, so it moves to the small diameter side and reduces the bobbin length.

The difference in bobbin diameter between the bottom ring 4 and the bottom end of the remainder is approximately 2
(when the inclination angle is 3 degrees 30' and the traverse length is 15 degrees),
The thread body for dyeing and heat treatment has a small density, and the contact area between the wire and the thread in the present invention is small, so the ring 4 at the bottom moves due to the deformation of the remaining part.

Thus, a cone bobbin similar to a cylindrical one can be collapsed to stack cone packages on the spindle.

When moving only the large diameter cone, insert the end of the small diameter cone into the bobbin stacked on top.

As described above, the present invention strengthens the cylindrical and conical shape by holding the bent part of the cross connection part with the contractible elastic ring 5, so even if the number of wires is increased or the wire diameter is increased, the cylindrical shape It is easy to move the body and the frustocone body, and it is possible to improve the precision of the cylinder body or the frustocone bobbin.

Furthermore, even if there are three or more connected cylindrical bodies, the contact resistance between the wire and the ring 5 is small, so the bobbin can be easily expanded and contracted.

[Brief explanation of the drawing]

FIG. 1 is a front view of the bobbin of the present invention, FIG. 2 is a perspective view of the cylindrical body constituting FIG. 1, and FIG. 3 is a front view of another embodiment.
FIG. 4 shows another method of connecting the bends.

Claims (1)

[Scope of utility model registration request] An elastic wire is bent in the axial direction in a zigzag pattern to form a cylindrical or truncated conical shape.The bent parts of a plurality of elastic bodies are connected to each other, and the bent parts at both ends are held by an annular body, and the middle part is a contractible annular body. A bobbin held by an elastic body.