JPH0716464B2 - Disposable chopsticks, disposable chopsticks manufacturing method and disposable chopsticks manufacturing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to disposable chopsticks consisting of a pair of disposable chopsticks, which are arranged side by side at a slit and can be divided at one end, and particularly, have a slightly thicker center and thinner both ends. The present invention relates to a wooden disposable chopsticks called Rikyu chopsticks, a manufacturing method of the disposable chopsticks, and a disposable chopsticks manufacturing apparatus.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 8 and 9, for example, a disposable chopstick 1 of this type is, for example, arranged in parallel with a slit 2 as a boundary and is separably joined by a joint portion 3 at one end. It consists of a pair of disposable chopsticks 1a and 1b, and each disposable chopsticks 1
Reference characters a and 1b each have a substantially rectangular cross section, and each of the cut side surfaces 4 and the other two side surfaces 5 and 6 orthogonal to the cut side surfaces 4.
Is formed as a flat surface, and the outer side surface 7 opposite to the cut side surface 4 is formed as a curved curved surface such that the center of the split chopstick is thick and both ends are thin. For example, as shown in FIG. 9, in the front view (FIG. 9A) in which the total length s = 208 mm and the slit 2 can be seen, the width h1 of the center is 11 mm, the width h2 of the end is 8 mm, and the side view (FIG. 9). In (b)),
The width t is 5 mm.

Conventionally, a method of manufacturing disposable chopsticks of this type is, for example, as shown in FIG. 8, a rectangular parallelepiped base material 10 obtained by previously cutting a material such as red cedar is continuously conveyed along the longitudinal direction. (FIG. 10 (a)), the base material 10 being conveyed is formed by cutting with a known rotary cutter in which a plurality of chip-shaped blades 11, 12, 13, 14, 15 are provided on the rotating body. There is. The procedure is as follows. First, the blades 11 and 12 form grooves 16 on the wide upper and lower surfaces 5 and 6 of the substrate 10 along the longitudinal direction corresponding to the cuts 2 (FIG. 10).
(B)). Next, the base material 10 is supported and conveyed by a rail 17 having a ridge formed to engage with the groove 16 of the base material 10, and cutter blades 13, 1 provided on both sides of the rail 17 are carried.
The other two side surfaces 7, 7 orthogonal to the upper and lower surfaces 5, 6 of the base material 10 supported by the rails 16 by 4 are cut and formed into substantially the same curved surface. After that, the base material 10 is cut along the groove 16 by the blade 15 of a cutter such as a circular saw to leave the severable coupling portion 3 at one end portion to form the slit 2.

[0004]

However, in the above-mentioned conventional disposable chopsticks 1, each disposable chopsticks 1a, 1b is composed of 3 pieces.
Since it is formed by having two flat surfaces 4, 5, 6 and one curved surface 7, there is a problem in that the axial symmetry is poor, which makes it difficult to hold. Especially when using
Since the two disposable chopsticks 1a and 1b having poor axial symmetry are overlapped with each other, there is a problem in that they are difficult to hold synergistically, the operability is deteriorated, and the food may be insufficiently gripped. It was

The present invention has been made in view of the above problems, and the disposable chopsticks are formed so as to be axially symmetric without impairing the characteristic of the so-called Rikyu chopsticks, which is slightly thick at the center and thin at both ends. The purpose of the present invention is to provide disposable chopsticks that make it easier to hold the disposable chopsticks and improve the operability during use. Moreover, it aims at providing the manufacturing method of this disposable chopsticks, and the disposable chopsticks manufacturing apparatus.

[0006]

DISCLOSURE OF THE INVENTION The disposable chopsticks of the present invention for solving the above problems are formed to have a substantially rectangular cross section, are arranged side by side with a slit as a boundary, and are separably joined at one end. In a disposable chopsticks composed of a pair of split chopsticks alone, each split chopstick has a split slit side surface and an outer side surface opposite to the split side surface formed of planes parallel to each other, and two other split split chopsticks orthogonal to each other. The orthogonal side surfaces are formed by mutually symmetrical curved surfaces.

Further, in the method for manufacturing disposable chopsticks of the present invention, a slit along the longitudinal direction is formed on the base material leaving a severable coupling portion at one end of the rectangular parallelepiped base material. In the method for producing disposable chopsticks consisting of a pair of disposable chopsticks, a ridge is formed on one side surface of the base material along the longitudinal direction, and two orthogonal side surfaces orthogonal to the one side surface while regulating the ridge. Are formed with curved surfaces symmetrical to each other, a groove is formed along the longitudinal direction on the orthogonal side surface, and then the protrusion is removed and a slit is formed along the groove.

Further, the disposable chopsticks manufacturing apparatus of the present invention conveys a rectangular parallelepiped base material along the longitudinal direction, forms the base material by cutting during the conveyance, and a pair of disposable chopsticks can be cut at one end. In a disposable chopsticks manufacturing apparatus for manufacturing disposable chopsticks, the protruding chopsticks having a ridge forming portion for cutting and forming a ridge along a longitudinal direction on one side surface of the base material and a groove for guiding the ridge of the base material A rail that supports one side surface on which the line is formed and two orthogonal side surfaces that are orthogonal to one side surface of the base material supported by the rail are cut and formed into curved surfaces that are symmetrical to each other, and a groove that extends along the longitudinal direction is formed on the orthogonal side surface. An orthogonal side surface forming part to be formed, a ridge removing part for removing a ridge of the base material on which the orthogonal side surface is formed, and a slit forming part for cutting the base material along the groove to form a slit. It is configured.

[0009]

According to the disposable chopsticks manufacturing method and disposable chopsticks manufacturing apparatus having the above-described structure, the split side surfaces of each split chopstick alone and the outer side surface opposite to the split side surfaces are formed as planes parallel to each other. A disposable chopstick is manufactured in which two other orthogonal side surfaces that are orthogonal to each other are curved surfaces symmetrical to each other. And these disposable chopsticks
Since the disposable chopsticks are axisymmetric, they are easier to hold.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The disposable chopsticks, the disposable chopsticks manufacturing method and the disposable chopsticks manufacturing apparatus according to the embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The disposable chopsticks according to the embodiment are manufactured by the method for manufacturing the disposable chopsticks according to the embodiment and the disposable chopsticks manufacturing apparatus for carrying out the method.

As shown in FIGS. 1 and 2, the disposable chopsticks W according to the embodiment are made of a wood material such as red cedar and have a substantially rectangular cross section and are arranged side by side with a slit 20 as a boundary. It consists of a pair of disposable chopsticks Wa, Wb joined by a joining portion 21 which can be cut at one end, and the whole is formed in a shape in which the center is made slightly thicker and both ends are made thinner, and the corner faces are taken. .

More specifically, each of the split chopsticks Wa, Wb has a split side surface 22 and an outer side surface 23 (23) opposite to the split side surface 22.
a, 23b) are formed by planes parallel to each other, and
Two other orthogonal side faces 24, 2 orthogonal to the cut side face 22
5 is formed as a curved surface symmetrical to each other, that is, a curved curved surface such that the center of the disposable chopstick is thick and both ends are thin. For example, as shown in FIG. 2, width H = 10 in the front view (FIG. 2A) in which the overall length is 208 mm and the slit 20 is visible, and in the side view (FIG. 2B), the central width T1 = 5. .5m
m, and the width T2 of the end portion is 4 mm.

Therefore, the disposable chopsticks W according to this embodiment has the characteristic of so-called Rikyu chopsticks in which the center is slightly thick and both ends are thin. When using the disposable chopsticks W according to the embodiment, the disposable chopsticks Wa and Wb are divided into two pieces by the connecting portion 21 and manually operated. In this case, each disposable chopstick alone Wa, Wb
The cut side surface 22 and the outer side surface 2 opposite to the cut side surface 22
3 and 3 are formed in planes parallel to each other, and the other two orthogonal side surfaces 24, 25 orthogonal to the cutting side surface 22 are formed in curved surfaces symmetrical to each other, so that the disposable chopsticks Wa, Wb are axially symmetrical. Therefore, it becomes easier to hold and the operability becomes better.

Next, a disposable chopsticks manufacturing apparatus for manufacturing the disposable chopsticks W will be described with reference to the drawings. In the disposable chopsticks manufacturing apparatus 30 shown in FIGS. 3 to 7, 31 is a storage portion for storing a rectangular parallelepiped wooden base material 26 (FIG. 7), and 32 is a narrow surface of the base material 26 supplied from the storage portion 31. 23 (23a, 23
An extruding section that pushes up b) up and down one by one by a crank motion to the downstream side, and 33 is a feed roller that sends out the base material 26 fed from the extruding section 32 to the downstream side.

Reference numeral 34 is a guide rail for guiding the base material 26 to be sent out to the end of molding, and the lower side surface 2 of the base material 26.
Lower rail 3 including a support rail 36 described later that supports 3a.
5 and an upper rail 38 that presses the upper side surface 23b of the base material 26 against the lower rail 35 by being biased by the spring 37.

Reference numeral 40 denotes a ridge forming portion, which extends along the longitudinal direction on the lower side surface 23a which is one side surface of the base material 26.
A ridge forming cutter 41 for cutting (FIG. 7) is provided. The ridge forming cutter 41 is provided with a plurality of (four in the embodiment) chip-shaped blades 43 that form the ridges 27 by cutting on a disk 42 that is driven and rotated. Reference numeral 44 denotes an upper surface cutter that cuts the upper surface 23b of the base material 26 into a flat surface. Similarly, a plurality of chip-shaped flat blades 46 are equally spaced (in the embodiment, on a disk 45 that is driven and rotated). 4) are provided.

The support rail 36 is located on the downstream side of the protrusion forming portion 40 in the lower rail 35 of the guide rail 34. As shown in FIG. 7 (c), the support rail 36 has a groove 39 for regulating and guiding the ridge 27 of the base material 26 and supports the lower side surface 23 a on which the ridge 27 is formed.

Reference numeral 50 denotes an orthogonal side surface forming portion, which is formed by cutting two orthogonal side surfaces 24 and 25 orthogonal to the lower side surface 23a of the base material 26 supported by the support rail 36 into the above-mentioned symmetrical curved surfaces. Grooves 28 (FIG. 7) are formed on the orthogonal side surfaces 24, 25 along the longitudinal direction, and chamfering of the corners is further performed. As shown in FIG. 5 and FIG. 6, the orthogonal side face forming portion 50 is formed on the right and left sides of the support rail 36 by the orthogonal side faces 24,
An orthogonal side forming cutter 51 for cutting 25 is provided.
The orthogonal side surface forming cutter 51 is provided with a plurality of (four in the embodiment) chip-shaped blades 53 that form the grooves 28 at equal intervals on a disk 52 that is driven and rotated. The rotary shaft 54 of each orthogonal side surface forming cutter 51 is slidably engaged with a slide rail 56 so as to be close to and away from each other.
5 is pivotally supported. Both sliders 55 are connected by a pair of links 58 that share one shaft 57. The shared shaft 57 is attached to a driving piece 61 that moves up and down by a cam 60 and slides on a slide rail 62. The vertical movement of the driving piece 61 causes a link 58 to rotate. Both sliders 55
To move away from each other. The timing of this approaching / separating is such that the blade 53 of the orthogonal side surface forming cutter 51 contacts the orthogonal side surfaces 24, 25 so that the center of the base material 26 becomes thicker and becomes gradually smaller toward both ends. Is determined by the shape of the cam 60.

Reference numeral 65 denotes a ridge removing section located downstream of the orthogonal side surface forming section 50, which removes the ridge 27 of the base material 26 after the orthogonal side surfaces 24 and 25 are formed by cutting. Equipped with 66. This ridge removal cutter 6
6 is a disk 67 that is driven and rotated, and a flat blade 68
Are provided at equal intervals (four in the embodiment).

Reference numeral 70 denotes a slit forming portion, which is provided with a slit forming cutter 71 made of a circular saw for cutting the base material 26 along the groove 28. The slit forming cutter 71 has its shaft pivotally supported so that it can move back and forth, and is retracted by a cam mechanism or the like when one end of the base material 26 passes therethrough, so that the base material 2
6 is not cut, and the portion is left to form the separable joint portion 21.

Therefore, the disposable chopsticks manufacturing apparatus 3 according to this embodiment
According to No. 0, the disposable chopsticks manufacturing method according to the embodiment is realized, and the disposable chopsticks W are manufactured as follows. Explaining with reference to the process diagram of FIG. 7, first, a rectangular parallelepiped base material 26 processed in the previous process is used.
Is stored in the storage unit 31, and each unit is driven. As a result, the base material 26 supplied from the storage unit 31 is transferred to the extrusion unit 3
It is continuously extruded from No. 2, is sequentially sent out by the feed roller 33, is guided by the guide rail 34, and is conveyed to the downstream side (FIG. 7A).

In the course of this conveyance, first, the blades 43 of the cutter of the protrusion forming portion 40 form the protrusions 27 on the lower side surface 23a of the base material 26 along the longitudinal direction, and the blades 46 of the upper surface cutter 44 form the upper surface. Is also cut (FIG. 7B). Next, the cutter blade 53 of the orthogonal side surface forming section 50 forms the two orthogonal side surfaces 24 and 25 into curved surfaces symmetrical to each other, and forms the groove 28 along the longitudinal direction on the orthogonal side surfaces 24 and 25. In this case, the base material 26 is regulated and constrained by the groove 39 of the support rail 36 at the ridge 27, so that the base material 26 does not wobble and the blades 5 of the orthogonal side surface forming cutters 51 on both sides.
The cutting of No. 3 is performed smoothly, and cutting defects such as waviness are prevented.

Next, with the blade 68 of the ridge removing section 65,
When the ridge 27 is removed, the slit 71 is formed along the groove 28 by the cutter 71 of the slit forming portion 70, and the joint portion 21 is formed at one end, and the slit 20 serves as a boundary. The disposable chopsticks W is a product of disposable chopsticks W consisting of Wa and Wb. This product is a guide rail 3
4 is discharged, conveyed by a conveyor or the like, collected in a predetermined number, and packed.

In the disposable chopsticks W according to the above embodiment,
The curved surfaces of the orthogonal side surfaces 24 and 25 are not limited to those described above, and may be formed with curved surfaces having substantially the same curvature. In short, any one can be used as long as the center of the disposable chopstick W is thick and both ends are thin. It can be something like this.

[0025]

As described above, according to the disposable chopsticks of the present invention, the split side faces of the split chopsticks alone and the outer side faces opposite to the split side faces are formed as planes parallel to each other, and the split side faces are formed. Since the other two orthogonal side surfaces that are orthogonal to each other are formed with curved surfaces that are symmetrical to each other, the characteristics of so-called Rikyu chopsticks in which the center of the chopsticks as a whole is thick and both ends are thin can be maintained and each chopstick chopstick can be made axisymmetric. Therefore, there is an effect that when the two disposable chopsticks are separated by the connecting portion and operated by hand, the disposable chopsticks can be easily held and the operability can be made extremely excellent.

Further, according to the disposable chopsticks manufacturing method and disposable chopsticks manufacturing apparatus of the present invention, the split side surfaces of each split chopstick alone and the outer surface opposite to the split side surfaces are formed as planes parallel to each other, and the split side surfaces are formed. Since the other two orthogonal side faces that are orthogonal to each other can be formed with curved surfaces symmetrical to each other, the whole disposable chopsticks can be formed without impairing the characteristic of the so-called Rikyu chopsticks, in which the center is thick at the center and the ends are thin. The single piece can be formed in axial symmetry, and therefore, when the two disposable chopsticks are separated by the connecting portion and operated by hand, the disposable chopsticks can be easily held and the operability can be extremely improved. Well

Further, in the manufacturing process, since the orthogonal side surface of the base material is molded while being restricted by the ridge on one side,
Since the base material does not wobble, it is possible to smoothly form the orthogonal side surface and prevent cutting defects such as waviness.

[Brief description of drawings]

FIG. 1 is a perspective view showing a disposable chopstick according to an embodiment of the present invention.

FIG. 2 is a front view (a), a side view (b), and a sectional view taken along line AA in (a) of FIG. 2, which schematically shows disposable chopsticks according to an embodiment of the present invention.
Is.

FIG. 3 is a perspective view showing a disposable chopsticks manufacturing apparatus according to an embodiment of the present invention.

FIG. 4 is a side view of essential parts showing a disposable chopsticks manufacturing apparatus according to an embodiment of the present invention.

FIG. 5 is a perspective view of a main part of the disposable chopsticks manufacturing apparatus according to the embodiment of the present invention.

FIG. 6 is a front view of FIG.

FIG. 7 is a process diagram illustrating a method for manufacturing disposable chopsticks according to an embodiment of the present invention, which is performed using the disposable chopsticks manufacturing apparatus according to the embodiment of the present invention.

FIG. 8 is a perspective view showing a conventional disposable chopsticks.

FIG. 9 is a front view (a) and a side view (b) schematically showing a conventional disposable chopsticks.

FIG. 10 is a process diagram illustrating a conventional method for manufacturing disposable chopsticks.

[Explanation of symbols]

 1, W Disposable chopsticks 1a, 1b, Wa, Wb Disposable chopsticks alone 2,20 Splitting 3,21 Coupling part 4,22 Splitting side surface 7,23 (23a, 23b) Outer side surface 5,6,24,25 Orthogonal side surface 10, 26 base material 27 ridge 28 groove 30 split chopstick manufacturing device 34 guide rail 36 support rail 39 groove 40 ridge forming part 50 orthogonal side surface forming part 65 ridge removing part 70 slit forming part

Claims (3)

[Claims] 1. A disposable chopstick comprising a pair of disposable chopsticks each having a substantially rectangular cross-section and arranged in parallel with each other at a slit and being separably joined at one end thereof. The split chopsticks are characterized in that the and the outer side surface on the opposite side of the cutting side surface are formed as planes parallel to each other, and the other two orthogonal side surfaces orthogonal to the cutting side surface are formed as mutually symmetrical curved surfaces. 2. A rectangular parallelepiped base material is provided with a severable coupling portion at one end thereof to form a slit along the longitudinal direction of the base material,
A method for manufacturing disposable chopsticks composed of a pair of disposable chopsticks with a slit as a boundary, in which a ridge is formed on one side surface of a base material along the longitudinal direction and is orthogonal to the one side surface while regulating the ridge. The chopsticks are characterized in that the two orthogonal side surfaces are formed with curved surfaces symmetrical to each other, a groove is formed along the longitudinal direction on the orthogonal side surfaces, and then the ridge is removed and a slit is formed along the groove. Manufacturing method. 3. A disposable chopstick composed of a pair of disposable chopsticks that can be cut at one end is manufactured by transporting a rectangular parallelepiped base along the longitudinal direction and molding the base during cutting. In the disposable chopsticks manufacturing apparatus, a ridge forming portion that cuts and forms a ridge along a longitudinal direction on one side surface of a base material, and one side surface having a groove that guides the ridge of the base material is formed. A supporting rail, and an orthogonal side surface forming section for cutting and forming two orthogonal side surfaces orthogonal to one side surface of the base material supported by the rail into mutually symmetrical curved surfaces and forming a groove along the longitudinal direction on the orthogonal side surface; A disposable chopsticks manufacturing apparatus comprising: a ridge removing unit that removes a ridge of a base material whose orthogonal side surfaces are molded; and a slit forming unit that cuts the base member along a groove to form a slit. .