JPH1111799A - Bobbin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily achieve the transport and storage at a low cost by fitting a recessed part and a projecting part to each other which are provided on joining surfaces opposite to each other of a split body to be split into a plurality of split bodies and can be inserted in each other to couple the split bodies. SOLUTION: In a bobbin, a long recessed part 3 pierced over the whole length and a long plate-like projecting part 4 are formed on joining surface 2, 2 opposite to each other of one split body 1a and the other split body 1b which are formed of synthetic resin and are semi-cylindrical in shape. The long plate-like projecting part 4 is inserted in the long recessed part 3, and slides for coupling. During the insertion, one side end face is pressed against a flat part and inserted to ensure the positioning in the longitudinal direction of the bobbin. When the recessed part 3 is simply engaged with the projecting part 4, the joining area is small, and the split bodies 1a, 1b can be separated in the width direction while a bobbin main body 1 is rotated, and the split bodies 1a, 1b with the detachment-prevention by the dove-tail fitting are also used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin for winding a plastic film, paper, cloth, a string, a thread, and the like. In addition to ease of handling during transportation and storage, transportation and storage costs are reduced,
The present invention relates to a bobbin adapted for use (reuse).

[0002]

2. Description of the Related Art Conventionally, plastic films, paper,
The bobbin that winds up wound materials such as cloth, string and thread is made of paper,
It is made of synthetic resin, light metal, wood, and the like, and is used in various ways depending on the type to be wound. Various sizes are used, from small diameter to large diameter.

For example, when a wound material wound on a small-diameter bobbin having a diameter of 25 mm or less is unwound into an empty bobbin,
Since it is relatively small, it is reused because transportation and transportation costs for reuse are low, and space is not required for storage. However, for example, when the wound material wound on a bobbin with a large diameter of 75 mm or more is unwound into an empty bobbin, the space volume increases due to the cylindrical shape of the bobbin,
Transport and transportation are very expensive and troublesome, and require a large area for storage. Therefore, they are often discarded in a single use without being reused, especially in the case of paper tubes. Although it is strongly treated as industrial waste, it is expensive and uneconomical, and has problems in protecting the natural environment.

[0004] Since the paper tube can be reused as waste paper for recycling after use, such as paperboard, etc., even though it is recyclable, water and fuel are used by the papermaking manufacturer for wastewater treatment and drying of the base paper until it becomes paper tube base paper. Due to the large amount of water used, there was a problem that water pollution and air pollution were polluted and the local environment was destroyed.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been developed to solve such a problem, and is intended to reduce the size of a large-diameter bobbin by dividing it into a plurality of bobbins. It is an object of the present invention to provide a bobbin that can be reused at a low cost.

[0006]

As a means for solving the above-mentioned problems and achieving the object, according to the present invention, a concave portion and a convex portion which can be inserted into each other are provided on a joint facing surface of a plurality of divided bodies. And a bobbin formed by fitting the concave portion and the convex portion to join the divided bodies was developed and adopted. .

Further, in the present invention, in the bobbin constructed as described above, a bobbin in which concave and convex portions are provided with retaining prevention means has been developed and adopted.

Further, in the present invention, a concave portion and a convex portion which can be inserted into each other are provided on the joint opposing surfaces of the plurality of divided bodies, and the concave and convex portions are fitted to each other to join the divided bodies. A bobbin with a sleeve inserted into its outer peripheral surface was developed and adopted.

Further, in the present invention, a concave portion and a convex portion which can be inserted into each other are provided on the joint opposing surface of the plurality of divided members, and the concave and convex portions are fitted to each other to join the divided members.
Developed a bobbin by drilling a pin hole on one side end surface and inserting a pin protruding from a bobbin holder into the pin hole,
Adopted.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the accompanying drawings. 1 is a cylindrical bobbin mainly made of paper, synthetic resin, light metal, wood, or the like. The concave portions 3 and the convex portions 4 provided over the entire length of the joint facing surfaces 2 and 2 of the semi-cylindrical divided bodies 1a and 1b are configured to be fitted.

That is, each of the divided bodies 1a formed in a semi-cylindrical shape and the joining opposing surfaces 2a, 2b of the other divided body 1b also formed in a semi-cylindrical shape extend through the entire length, respectively. A long concave portion 3 and a long plate-shaped convex portion 4 projecting over the entire length are formed, and the other long plate-shaped convex portion 4 is inserted into one long concave portion 3 and slid and fitted and joined. Things. When inserting the bobbin, one side end face is applied to a flat surface to ensure positioning in the length direction of the bobbin.

[0012] In the case of the above-described connection consisting of simply fitting the concave portion 3 and the convex portion 4, since the joining area is small and no removal is prevented, the divided body 1 is rotated during rotation of the bobbin main body 1.
a and 1b may be separated in the width direction.
In some cases, the divided bodies 1a and 1b provided with a means for preventing the dovetails from being disengaged as shown in FIGS.

That is, as shown in FIG. 4A, the front end of the convex portion 4 provided on the joint facing surface 2b of the divided body 1b is formed as a rectangular bulging convex portion 4a, and the joint opposed surface 2a of the divided body 1a is formed. The protrusion 4a is formed in a rectangular recess 3a in which the bulging protrusion 4a fits, or as shown in FIG. 4B, the tip of the protrusion 4 provided on the joint facing surface 2b of the divided body 1b is rounded. A convex part 4b having a shape is formed in a circular concave part 3b in which the convex part 4b fits on the joint facing surface 2a of the divided body 1a, or as shown in FIG. Bonding opposing surface 2 of 1b
The tip of the convex portion 4 provided in b is a triangular bulging convex portion 4c, which is formed in a triangular concave portion 3c in which the bulging convex portion 4c fits on the joint facing surface 2a of the divided body 1a. The divided bodies 1a and 1b do not separate.

In the case of the bobbin main body 1, the side end surfaces of the divided bodies 1a and 1b are opposed to each other, and the bulging projections 4 of the divided body 1b are formed.
a, 4b, and 4c are inserted into the recesses 3a, 3b, and 3c, and slid in the longitudinal direction to be fitted and connected. After the fitting, the bulging convex portions 4a, 4b, 4c are turned into the concave portions 3a, 3b,
3d, the divided bodies 1a and 1b are not likely to be separated during rotation. In the case of the bobbin main body 1, since the divided bodies 1a and 1b have the same shape in the longitudinal direction, if the bobbin is made of synthetic resin or light alloy, it can be manufactured by an extruder. It can be manufactured by polymerizing and bonding.

FIGS. 5 to 8 show modifications of the first embodiment. One of the divided bodies 11a is formed in a semi-cylindrical shape, and the other is formed in a semi-cylindrical form. Is divided into a concave portion 13 and a convex portion 1 provided on the joint facing surface 12.
4 is fitted to form the bobbin main body 11 in the same manner as in the first embodiment, but the fitting of the concave portion 13 and the convex portion 14 formed on the joint facing surfaces 12a and 12b is not a sliding type. The difference is that the position of the outer periphery is securely inserted.

That is, as shown in FIG. 7, a concave portion 13 which is long in the longitudinal direction is formed on the joining opposing surface 12a of one of the divided members 11a formed in a semicircular shape, and the joining opposing surface of the other divided member 11b is formed. A long plate-shaped projection 14 is provided on 12b, and the long plate-shaped projection 14 is fitted into the long recess 13 to obtain the bobbin main body 11.

Further, a long concave portion 13 and a long plate-shaped convex portion 14 are provided.
As shown in FIG. 8, in the longitudinal direction of the joining opposing surfaces 12a and 12b of one divided body 11a and the other divided body 11b formed in a semi-cylindrical shape, as shown in FIG. Concave portions 13a, 13b, 13c and short convex portions 14a, 14
b, 14c and opposing short recesses 13a, 13
In some cases, the bobbin main body 11 is obtained by inserting the short protrusions 14a, 14b, 14c into the b, 13c.

The bobbin main body 11 is a plug-in type having a concave portion and a convex portion which can be inserted into each other, and can be easily connected by inserting the convex portion along the wall surface of the concave portion. And in the case of this bobbin, since the same divided body 11a, 11b can be used, the synthetic resin bobbin is formed by a molding machine, and the light bobbin is formed by die casting. In the case of paper, it is also possible to form the paperboard by pulverizing the paperboard and decomposing it by moisture decomposition, or by mixing a suitable binder into fines of waste paper.

A simple long recess 13 and a long plate-like protrusion 14 as shown in FIG. 7 and a short recess 13a as shown in FIG.
In the case of fitting consisting of 13b, 13c and short projections 14a, 14b, 14c, the coupling force is weak and there is a risk of separation due to the rotational centrifugal force of the bobbin main body 11, so for example, as shown in FIGS. As described above, a long concave portion 15 is provided in the longitudinal direction of the joining opposing surface 12a of one divided body 11a, and a long plate-shaped convex portion 16 is protruded from the joining opposing surface 12 of the other divided body 11b. A semi-cylindrical projection 16a projecting upward slightly larger than the inner diameter of the recess 15 is provided.
There is also a case where the bobbin main body 11 is obtained by pressing and inserting a into the concave portion 15 and engaging with the vertical hole 15 a formed in the deep portion of the concave portion 15.

As shown in FIG. 9C, concave portions 17a, 17b, 17c are provided at appropriate intervals on the joint facing surface 12a of one divided body 11a, and the other divided body 11b
Projecting portions 18a, 18b, and 18c protrude from the joint facing surface 12b, and a semi-cylindrical projecting portion 18d projecting upward at a tip end thereof slightly larger than the inner diameter of the concave portions 17a, 17b, and 17c;
18e, 18f, and projections 18d, 18e, 1
8f is pressed and inserted into the recesses 17a, 17b, 17c,
A vertical hole 19 formed at the back of the recesses 17a, 17b, 17c
The bobbin main body 11 may be obtained by engaging with a, 19b, and 19c.

Alternatively, as shown in FIG. 9D, a long concave portion 20 is provided in the longitudinal direction of the joining opposing surface 12a of one divided body 11a, and a long plate-shaped convex is provided on the joining opposing surface 12b of the other divided body 11b. Part 21 is projected, and a long concave part 2
0, which are provided with hemispherical protrusions 21a, 21b, and 21c slightly larger than the inner diameter of the protrusions 21a, 21b, and 21c.
In some cases, the bobbin main body 11 is obtained by pressing the 1b, 21c into the long recess 20 and fitting it into the recesses 20a, 20b, 20c provided on the upper surface thereof.

Further, as shown in FIG. 9E, in the longitudinal direction of the joint opposing surface 12a of one of the divided bodies 11a, the joints of the concave parts 22a, 22b, 22c provided at appropriate intervals with the other divided body 11b. Protrusions 23a, 23 projecting from surface 12b
b, 23c, hemispherical projections 24 projecting upward slightly larger than the inner diameters of the recesses 22a, 22b, 22c
a, 24b, 24c, and the projections 24a, 24
b, 24c are pressed and inserted into the recesses 22a, 22b, 22c, and the depressions 25a, 25b, 25c provided on the upper surface thereof
In some cases, the bobbin main body 11 is obtained.

The bobbin main body 11 of FIGS. 9A to 9E presses the projection provided on the projection and inserts it into the recess, and the projection engages with the engaging portion, so that it can be firmly engaged. It can be seen that the connection has been made by touch, and the connection work is assured.

The bobbin bodies 1 and 11 according to the first embodiment thus configured can be used as bobbins for winding various kinds of windings by combining the divided bodies 1a, 1b and 11a, 11b. When the bobbin main bodies 1 and 11 are transported or stored, as shown in FIG. 10, the divided bodies 1a, 1b and 11a, 11b are divided into two parts and stacked with the semi-cylindrical parts downward, and thus stable. It can be stacked vertically in the state, saving space and reducing transportation and storage costs. The bobbin main bodies 1 and 11 are not suitable for thread-like winding because seams appear on the outer peripheral surface.
It can be used to wind strings and the like.

FIGS. 11A to 11D show a second embodiment, in which a sleeve 32 is fitted on the outer peripheral surface of a bobbin main body 31 obtained in the same manner as in the first embodiment. Thus, the joints are prevented from being exposed on the surface, and separation of the joint surfaces is prevented. The sleeve 32 is made of synthetic resin such as ABS resin or paper, and has a thickness of 0.3 mm to
It is suitable to use one having a thickness of about 1.2 mm.

Various types of fitting states of the sleeve 32 are used depending on the purpose of use. For example, as shown in FIG. 11A, the sleeve 32 covers the bobbin main body 31 except for portions near both side ends, and FIG. 11, one end of the bobbin main body 31 is bent inward, as shown in FIG. 11C, one end of the bobbin main body 31 is turned back to the inner surface portion, and FIG.
The bobbin main body 31 is obtained by folding both side ends inward as shown in FIG.

The bobbin main body 3 fitted with the sleeve 32
When 1 is used, since the seam does not appear on the surface of the bobbin main body 31, the wound material can be stably wound, the divided bodies 31a and 31b do not separate, and the wound material does not become dirty. It is capable of winding plastic film, paper, cloth and the like.

When the material to be wound is a thread, a gripping groove is required. Therefore, as shown in FIGS. 12A and 12B, a sleeve 32 in which the vicinity of one end of the paper tube 31 is not covered is used. A triangular thread holding groove 33 is formed on one end face of the paper tube 31 or a slot 34 is formed on the outer periphery near one side end so that the thread can be easily taken out.

FIGS. 13 and 14 show a third embodiment, in which a bobbin 41 obtained in the same manner as in the first embodiment is divided by a bobbin holder 42 into divided bodies 41a. And 41b are prevented from being divided.
That is, a plurality of pin holes 43 are formed along the circumference of one end surface of the bobbin 41, and the pins 44 protruding from the bobbin holder 42 are press-fitted into the pin holes 43 and coupled to each other to form a divided body. This prevents separation of 41a and 41b. The bobbin 41 thus configured is connected by using the bobbin holder 42, so that the bobbin 41 does not separate.

In each of the first to third embodiments described above, the case where each of the divided bodies is a semicircular two pieces has been described. However, the present invention is not necessarily limited to this, and the object of the present invention is as follows. It is obvious that various design changes can be made without departing from the gist of the invention.

[0031]

As described above, according to the bobbin main body of the first aspect of the present invention, the main body of the bobbin can be divided into a plurality of parts at the time of transportation or storage, and the space can be conventionally increased due to a large space volume. Large-diameter bobbins that have been discarded are not suitable for transportation, but can be transported and stored at low cost and are easy to handle, making them effective for reuse. is there.

Also, since the bobbin main body is connected by inserting the concave portion and the convex portion on the divided opposing surfaces of the divided bodies,
It can be quickly and easily combined to obtain a bobbin main body,
It can be simplified even when it is separated into divided bodies.

Further, according to the second aspect of the present invention, since the concave portion and the convex portion are provided with a retaining function, even if a rotary centrifugal force acts mainly on the bobbin, separation of the divided bodies can be completely prevented. In addition, the wound material can be wound in a stable state.

According to the third aspect of the present invention, since the sleeve is fitted on the outer peripheral surface of the main body of the bobbin, in addition to the effect of the first aspect, separation of the main body of the bobbin can be prevented. At the same time, since no seams appear on the surface, the wound material can be wound in a stable state, and the wound material can be wound without soiling.

According to a fourth aspect of the present invention, a pin hole is formed in one end face of the bobbin main body, and a pin projecting from the bobbin holder is inserted into the pin hole. In addition to the effect described above, even if a rotary centrifugal force acts mainly on the bobbin, the divided bodies do not separate, and the wound material can be smoothly and reliably wound.

[Brief description of the drawings]

FIG. 1 is a side view of a bobbin according to a first embodiment of the present invention.

FIG. 2 is an exploded view of the bobbin of FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an explanatory diagram showing a modified example of the coupling unit.

FIG. 5 is a side view of a bobbin according to a modified example of the first embodiment.

FIG. 6 is an exploded view of the bobbin of FIG.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a plan view of another example.

FIG. 9 is an explanatory diagram showing a modified example of the coupling unit.

FIG. 10 is a side view showing a stacked state after bobbin division.

FIG. 11 is a sectional view of a bobbin according to a second embodiment of the present invention.

FIG. 12 is a perspective view of a bobbin according to a modification of the second embodiment of the present invention.

FIG. 13 is a sectional view of a bobbin according to a third embodiment of the present invention.

FIG. 14 is a sectional view showing a state in which a bobbin holder is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bobbin main body 1a One divided body 1b The other divided body 2 Joint facing surface 3 Concave part 4 Convex part 32 Sleeve 42 Pin hole 43 Bobbin holder 44 Pin

Claims (4)

[Claims] 1. A bobbin comprising a plurality of divided bodies provided with a concave portion and a convex portion which can be inserted into each other on a joint facing surface of the divided body, and the concave and convex portions are fitted to each other to join the divided bodies. 2. The bobbin according to claim 1, wherein the concave portion and the convex portion are provided with retaining means. 3. A concave portion and a convex portion which can be inserted into each other are provided on a joint facing surface of a plurality of divided members, and the concave member and the convex portion are fitted to each other to join the divided members. A bobbin with a sleeve inserted. 4. A plurality of divided bodies are provided with a concave portion and a convex portion that can be inserted into each other on a joint facing surface of the divided body, the concave portions and the convex portions are fitted to each other to join the divided bodies, and one side end surface thereof. A bobbin in which a pin hole is formed in a bobbin, and a pin protruding from a bobbin holder is inserted into the pin hole.