JP2001269908A - Manufacturing method of chopsticks - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use efficiently outside plank that is generated when columns foods, etc., are cut out from raw timber in the case of manufactured of chopsticks from the outside planks. SOLUTION: The remnant 19 of raw timber that is generated from outside planks after cutting down of half finished splittable chopsticks and have not width enough for one chopstick bar is not dumped but used. A tabular board 19b for chopsticks is made from the remnants 19 by cutting down to the thickness of one chopstick bar, then the tabular board 19b is cut to down width of one chopstick bar to get a chopsticks 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a method for producing wooden chopsticks.

[0002]

2. Description of the Related Art Chopsticks used for meals include wooden, bamboo and metal chopsticks, and wooden chopsticks include disposable white wooden chopsticks and disposable chopsticks (for example, cedar). Shiraki chopsticks and split chopsticks are produced by cutting raw wood into chopstick lengths, and then processing board materials, straight-grained wood, and the like cut out from the cut raw wood.

[0003] Recently, however, the problem of deforestation due to the cutting of trees and disasters caused by deforestation have been highlighted, and the use of wood for building materials and the like has been regulated from the viewpoint of forest protection. Movement is increasing rapidly. Under such circumstances, it is naturally necessary to regulate or prohibit the use of raw wood, even for chopsticks and disposable chopsticks that are used only once, and such movements are rapidly increasing. Logs are no longer used in the production of chopsticks and split chopsticks in Japan, but at present, most imported products are products that use raw wood.

[0004] Therefore, the applicant of the present invention has developed a back plate (skin: stiffness) which cannot be used as a building material because it is a residual material generated when a pillar material, a plate material and the like are cut out from a log such as a cedar. Attention has been paid, and a method for producing disposable chopsticks by utilizing this has been proposed (Japanese Patent No. 2668319). In addition, the backboard has an advantage that it is suitable for materials such as high-quality tori chopsticks and natural chopsticks because the annual rings are finer than the central part of the log.

In the manufacturing method proposed above, as shown in FIG. 1A, a back plate 10 having a crescent cross section is cut into a length corresponding to the length of the chopsticks used as a product. The back plate 10 cut to a predetermined length has a flat flat surface 10a opposite to the bark 10b in a state substantially orthogonal to the end surfaces 11a and 11b, and the flat surface 10a is cut. It is finished in a smooth state.

[0006] As shown by the dashed lines in FIGS. 1 (a) and 1 (b), the smoothed back plate 10 has a portion slightly close to the bark 10b side of the back plate 10 with respect to the flat surface 10a. The cutting is performed so that a cutting surface 12 in an inclined state is obtained. As a result, the flat material 11 used for the semi-finished chopsticks 15 and the scrap material 17 as the remaining material are obtained. In addition, the cut surface 12 is inclined about 5 to 20 degrees with respect to the flat surface 10a.

When the thickness of the end piece 17 is equal to or greater than the thickness of the flat plate 11, the flat plate 1 for the semi-finished chopsticks 15 is again used.
1 is cut out but discarded if there is no such thickness.

After the cut surface 12 is cut, the flat plate 11 is cut into a size corresponding to the thickness of the semi-finished chopsticks 15 as shown in FIG. The cutting pitch in the width direction of the flat plate 11 at this time has a size corresponding to the thickness of the semi-finished chopsticks 15 to be manufactured, that is, the thickness of one chopstick obtained when the chopsticks are split.

When the flat plate 11 is cut at a predetermined pitch, one or a plurality of cut pieces 16 cut on each side in the width direction of the flat plate 11 have the thickness dimensions of the end faces 16a and 16b. Since the width of the chopsticks is shorter than the width of the chopsticks, the chopsticks cannot be used, and these cut pieces 16 have been removed and discarded. A portion other than the cut pieces 16 is made into a plurality of semi-finished disposable chopsticks 15 shown in FIG.

[0010]

However, according to the above-mentioned method for producing chopsticks, the back plate which is usually discarded or incinerated is effectively used, which greatly contributes to forest and environmental protection. However, the scraps 17 (see FIG. 2) remaining after cutting the semi-finished disposable chopsticks are discarded because they cannot be used as disposable chopsticks as described above, so that the backboard is efficiently used without waste. There is still room for improvement.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a method of manufacturing chopsticks that can effectively use the scraps obtained after cutting chopsticks from a backboard without waste.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a method of manufacturing chopsticks using a back plate generated when a pillar, a plate, or the like is cut from a log, wherein a semi-finished chopstick is produced from the back plate. Of the remaining material after cutting a flat plate, the remaining material that cannot secure the width of one chopstick is used without discarding, and the remaining material is used for one chopstick. The chopsticks are cut into pieces that are the same size as the chopsticks, and the chopsticks are cut at a pitch corresponding to the width of one chopstick. Characterized by

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

First, an example of a method for manufacturing chopsticks will be described with reference to FIG.

In this example, as shown in FIG. 1, an end which is a remaining material obtained by removing a flat plate material 11 which becomes a semi-finished chopsticks product 15 from a back plate 10 having a crescent cross section obtained by cutting a pillar material, a plate material and the like from a log. As shown in FIG. 2A, the chopstick material 17a having a tapered stick shape in which the width of the chopsticks gradually decreases from one end to the other end is manufactured using the material 17 as shown in FIG. I do.

The cut material 17 has a smooth cut surface 12, and the portion of the cut material 17 close to the bark 10b side is inclined with respect to the cut surface 12, as shown by the dashed line in FIG. It is cut so as to become the inclined surface 17b in the state. As a result, a chopstick flat material 17c having the cut surface 12 and the inclined surface 17b and a waste material 17d are obtained. Note that the inclined surface 17b is inclined by about 5 to 20 degrees with respect to the cut surface 12.

As shown in FIG. 2 (c), the chopstick flat material 17c is cut along the longitudinal direction orthogonal to the width direction at a pitch equal to the width direction after the inclined surface 17b is cut. Be cut off. The cutting pitch of the chopstick flat plate 17c is set to a size corresponding to the thickness of the chopstick 17a to be manufactured.

In this manner, when cut at the same cutting pitch in the width direction, one or a plurality of cut pieces 17e along the both side edges in the width direction of the chopstick flat material 17c.
Are discarded because they have not reached the width dimension of the chopsticks 17a. Then, portions other than the cut pieces 17e at both side edges in the width direction become a plurality of tapered stick-shaped chopsticks 17a shown in FIG. Obtained chopsticks 17a
Is subjected to processing such as polishing and chamfering.

The method for producing such chopsticks 17a is preferably carried out using the apparatus for producing semi-finished chopsticks disclosed in Japanese Patent No. 2668319. FIG. 3 shows a schematic configuration of the manufacturing apparatus.

The manufacturing apparatus shown in FIG.
A plurality of chains 22 that move horizontally around by 1
Is provided. The orbiting transport mechanism 20 is housed in a case 23 having an open upper surface. A plurality of pallets 24 are continuously attached to the chain 22 that moves in the longitudinal direction. Each pallet 24 is sequentially conveyed along the upper surface of the case 23 in a horizontal state in a direction indicated by an arrow A.

FIG. 4 is a perspective view of the pallet 24. The pallet 24 is processed into a flat plate shape, and has pedestal portions 24a,
4b is provided. Between each platform 24a, 24b,
The support part 24c on which the back plate 10 is placed is provided. The support portion 24c is inclined such that the front end in the moving direction is on the lower side.

Each side portion in the width direction of the support portion 24c and each side portion in the width direction of each of the base portions 24a and 24b are frame portions 24d projecting upward. Also, the support portion 24c
A plurality of grooves 24e extending along the moving direction of the pallet 24 are continuously provided in the moving direction (longitudinal direction) at a constant pitch in the width direction of the pallet 24 on each of the base portions 24a and 24b. . The pitch of each groove 24 e is equal to the cutting pitch for obtaining the semi-finished chopsticks 15 from the flat plate 11.

As shown in FIG. 3, an input portion 25 of the back plate 10 which is opened upward is provided in a movement area of the pallet 24 on the upper surface of the case 23. A horizontal cutting mechanism 30 that cuts the back plate 10 placed on each pallet 24 in the horizontal direction is provided downstream of the loading unit 25 (downstream in the pallet moving direction). Further, on the downstream side of the horizontal cutting mechanism 30, there is provided an offcut removing section 26 for removing offcuts 17 on the bark 10 b side cut from the backboard 10.

A first cutting mechanism 40, a second cutting mechanism 50, and a third cutting mechanism 60 for cutting the cut surface 12 of the flat plate material 11 cut from the back plate 10 are provided on the downstream side of the end material removing section 26. Are provided in order along the moving direction of the pallet 24.

A vertical cutting mechanism 70 is provided on the downstream side of the third cutting mechanism 60 and near the end of the orbiting transport mechanism 20. The vertical cutting mechanism 70 is configured to cut the flat plate material 11 after the cutting process vertically at a constant pitch in the width direction along the moving direction of the pallet 24.

FIG. 5 is a plan view of the horizontal cutting mechanism 30 and its peripheral portion.

The horizontal cutting mechanism 30 includes a pair of pulleys 31 arranged on each side of the orbiting transport mechanism 20 and a belt-like saw blade 32 wound around each pulley 31. The saw blade 32 is configured to pass a predetermined height position above the moving area of each pallet 24 in a horizontal state orthogonal to the pallet moving direction. Blade 32 of saw blade 32
a is directed downstream in the pallet movement direction. A rotational force is applied to one of the pulleys 31 by a motor 33.

On the upstream side of the saw blade 32 (upstream in the pallet moving direction), a pair of pressing plates 34 for pressing the back plate 10 moving toward the saw blade 32 are arranged side by side in the moving direction of the pallet 24. Have been. Each pressing plate 34 is slightly inclined from the vertical state so that the lower end is located on the downstream side, and presses the lower end of each pallet 24 downward. The height of the saw blade 32 is set in accordance with the thickness of the flat plate 11 obtained from the back plate 10 placed on the pallet 24.

The first cutting mechanism 40, as shown in FIG.
Motor 41 arranged on the upper side of the moving area of pallet 24
And a rotary cutter 42 attached to the output shaft of the motor 41. As shown in FIG. 3, a pair of pressing plates 43 and 44 are provided on the upstream side of the rotary cutter 42, and a single pressing plate 45 is provided on the downstream side of the rotary cutter 42. I have.

Each of the pressing plates 43 and 44 is slightly inclined with respect to the horizontal so that the end on the rotary cutter 42 side is located downward, and the inclined end is urged downward by a spring. ing.

The pressing plate 45 is slightly inclined with respect to the horizontal so that the end on the rotary cutter 42 side is located downward, and the inclined end is urged downward by a spring.

Each of the pressing plates 43 to 45 presses the flat plate 11 located below the rotary cutter 42 and fixes the flat plate 11 on the pallet 24.

FIG. 6 is a side view of the rotary cutter 42. The rotary cutter 42 has a cylindrical shape,
At the peripheral surface, at appropriate intervals in the circumferential direction,
A plurality of cutting blades 42a are provided at appropriate intervals also in the axial direction. The rotary cutter 42 is rotated by a motor 41, and the cut surface 12 of the flat plate 11 sent below the rotary cutter 42.
Is cut by each cutting blade 42a.

The rotary cutter 42 is disposed in a housing 46 as shown in FIG. An exhaust duct 47 communicates with the housing 46. Exhaust duct 4
7 is connected to an exhaust blower (not shown), and cutting chips generated by cutting the flat plate material 11 by the rotary cutter 42 are discharged by the exhaust blower 4 by the exhaust blower.
7 to a predetermined position.

As shown in FIG. 3, the second cutting mechanism 50 disposed adjacent to the first cutting mechanism 40 also includes a rotary cutter 52 and a motor (not shown) for driving the rotary cutter 52 to rotate. , Rotary cutter 5
A pair of pressing plates 53 and 54 arranged so as to press the flat plate member 11 located below the second pressing member 2.

The rotary cutter 52, like the rotary cutter 42 of the first cutting mechanism 40, has a cylindrical shape having a large number of cutting blades on its peripheral surface. The cutting blade of the rotary cutter 52 has a deeper cutting depth than the cutting blade 42 a of the rotary cutter 42 of the first cutting mechanism 40.

The rotary cutter 52 of the second cutting mechanism 50 is also disposed in the housing 56. An exhaust duct 57 communicates with the housing 56. An exhaust blower (not shown) is connected to the exhaust duct 57, and cutting chips generated by cutting the flat plate 11 by the rotary cutter 52 are discharged to a predetermined position through the exhaust duct 57 by the exhaust blower. .

The third cutting mechanism 60 is provided for finish-cutting the cut surface 12 of the flat plate 11 cut by the first cutting mechanism 40 and the second cutting mechanism 50. Third
The cutting mechanism 60 also includes a finishing rotary cutter 62 disposed in the housing 66, a motor (not shown) for rotating the finishing rotary cutter 62, and the flat plate 11 located below the finishing rotary cutter 62.
And a pair of pressing plates 63 and 64 for pressing the pressure.

FIG. 7 is a side view of the finishing rotary cutter 62. The finishing rotary cutter 62 has an eccentric cylindrical shape, and a cutting blade 62a extending in the axial direction is provided at a centrifugal position on the peripheral surface.

An exhaust duct 67 connected to an exhaust blower communicates with a housing 66 accommodating the finishing rotary cutter 62.
The cutting chips generated by the cutting of the flat plate member 11 by the exhaust gas are discarded at a predetermined position through the exhaust duct 67 by the exhaust blower.

As shown in FIG. 3, a vertical cutting mechanism 70 disposed downstream of the third cutting mechanism 60 includes a housing 76.
A plurality of rotary blades 72 arranged in parallel at a pitch equal to a width direction perpendicular to the moving direction of the pallet 24 are rotated by a motor (not shown).

FIG. 8 is a side view of the rotary blade 72. Each rotary blade 72 has a disk shape, and a saw blade portion 72a is provided on the entire circumferential surface. Each rotary blade 72 is attached to the output shaft 71a of the motor at a pitch equal to the cutting pitch of the flat plate 11 and the chopstick flat plate 17c, and each rotary blade 72 is provided in each groove 24e of each pallet 24 moving downward. The lower ends of 72 are respectively inserted.

As shown in FIG. 2, on the upstream side and the downstream side of each rotary blade 72, flat pressing plates 73 and 74 for pressing the flat plate member 11 positioned below each rotary blade 72 are arranged. Have been. Each of the pressing plates 73 and 74 is horizontally installed above the orbiting pallet 24 so as to be orthogonal to the moving direction of the pallet 24, and is entirely urged downward by a spring. ing.

On the downstream side of the vertical cutting mechanism 70, a cut piece removing section 27 is provided.

Using the apparatus for manufacturing semi-finished chopsticks having the above structure, the chopsticks 17a are manufactured as follows.

First, when the chain 22 of the circular transport mechanism 20 is rotated, each pallet 24 attached to the chain 22 is transported horizontally along the open upper surface of the case 23. Then, on the inclined supporting portion 24c of each pallet 24 conveyed to the loading portion 25, the crumb-shaped cut pieces 17 cut to a predetermined length are sequentially arranged with the cut surface 12 on the lower side. Be placed on

Each pallet 24 on which the scraps 17 are placed is
The chain 22 is conveyed from the charging section 25 to the horizontal cutting mechanism 30 as the chain 22 moves around. In the horizontal cutting mechanism 30,
The end material 17 on the pallet 24 is moved to the orbital movement area of the orbiting saw blade 32 while being pressed against the pallet 24 by the pair of pressing plates 34. The end material 17 that is placed on the pallet 24 and moves is placed on each pressing plate 3.
Saw blade 3 which is in a horizontal state while being pressed by 4
2 cut.

At this time, the support portion 24c on which the end material 17 of the pallet 24 is placed is inclined with respect to the horizontal state so that the front end in the moving direction is located below, so that the horizontal state The saw blade 42 becomes the inclined surface 1 inclined with respect to the cutting surface 12 such that the thickness of the front end face in the moving direction is large and the thickness of the rear end face is small in the moving direction.
Cut along 7b.

When the scrap 17 is cut along the inclined surface 17b in this way, the scrap 17 is removed from the upper waste 17d.
At the same time, it is placed on the pallet 24 and conveyed to the offcut removing section 26, where the inclined surface 17
The upper waste material 17d cut at b is removed. Thereby, the flat plate material for chopsticks 17c having the inclined surface 17b and the cut surface 12 is obtained on the pallet 24.

Thereafter, the pallet 24 on which only the chopstick flat plate 17c is placed is transported to the first cutting mechanism 40. In the first cutting mechanism 40, the chopstick flat material 17c placed on the pallet 24 is pressed by the pair of pressing plates 43, 44 and the pressing plate 45, and the chopstick flat material 17c in this state is pressed. Is roughly cut by the cutting blade 42a of the rotary cutter 42. At this time, the cutting waste of the flat plate 11 is
Is discharged through.

The chopstick flat plate 17c whose inclined surface 17b is roughly cut is conveyed to the second cutting mechanism 50 while being placed on the pallet 24. Then, in the second cutting mechanism 50, similarly to the first cutting mechanism 40, the chopstick flat material 1
7c is a state where the inclined surface 17b on the upper surface is pressed by the pressing plate 53 and the pressing plate 54,
By the cutting blade 52a, the cutting is performed more finely than the rotary cutter 42 of the first cutting mechanism 40 described above. The cuttings are discharged through the exhaust duct 57.

The chopstick flat plate 17c having the inclined surface 17b finely cut is conveyed to the third cutting mechanism 60 while being placed on the pallet 24. And the third cutting mechanism 60
However, like the second cutting mechanism 50, the chopstick flat material 17c
In the state where the rotary cutter 62 is pressed by the pressing plate 63 and the pressing plate 64, the inclined surface 17 b of the upper surface is more sharply cut by the cutting blade 62 a of the rotary cutter 62 than the fine cutting of the rotary cutter 52 of the second cutting mechanism 50. Finished and cut more precisely. The chips are discharged through the exhaust duct 67.

The above-described first cutting mechanism 40 and second cutting mechanism 5
The chopstick flat material 17c, the inclined surface 17c of which has been cut by the zero and third cutting mechanisms 60, is transported to the vertical cutting mechanism 70 together with the pallet 24.

In the vertical cutting mechanism 70, the pallet 2
Each of the rotary blades 72 is placed in a state where the chopstick flat material 17c placed on the top 4 is pressed by the pressing plates 73 and 74.
Are vertically cut along the moving direction of the pallet 24 at a predetermined pitch in the width direction.

At this time, the saw blade 72a of each rotary blade 72 is
Since the rotary blade 72 is not damaged by the pallet 24 because it enters the groove 24e of the moving pallet 24, the chopstick flat plate 17c is also reliably cut. The cutting waste of the chopstick flat material 17c is discharged through the exhaust duct 77.

The chopstick flat plate 1 thus cut
7 c is conveyed by the pallet 24 to the cut piece removing unit 27 which is the terminal end of the orbital conveyance mechanism 20. Then, the flat plate material 1 on the pallet 24 conveyed to the cut piece removing unit 27
In 1, cut pieces 17 e each having a thickness of each side portion smaller than the width dimension of one chopstick material 17 a are removed. As a result, a plurality of tapered stick-shaped chopsticks 17a remain on the pallet 24, and the obtained chopsticks 17a on the pallet 24 are transported to the next step, where processing such as chamfering and surface polishing is performed. It is made into one chopstick. Then, the obtained pair of chopsticks is bundled with a band or stored in a chopstick bag to make a pair of chopsticks.

In the manufacturing apparatus used in the above example, the cut surface 12 of the flat plate 11 is cut by the first cutting mechanism 40, the second cutting mechanism 50, and the third cutting mechanism 60. However, depending on the condition of the cutting surface 12 of the flat plate material 11, the cutting may be performed by any one or two cutting mechanisms, or may be conveyed to the next step without performing any cutting. Good.

Next, another example of the method for producing chopsticks will be described. In this example, when producing the semi-finished chopsticks according to the method for producing semi-finished chopsticks shown in FIG. 1, the chopped material for the rice chopsticks shown in FIG. 16a.

The chopsticks for chopsticks 16a have a constant width dimension throughout, and the chopsticks for chopsticks 16a are made thicker at the center in the longitudinal direction and tapered sequentially toward each end. By forming into a shape, one piece of Rikyu chopsticks is obtained. Then, a pair of chopsticks is bundled with a band or accommodated in a chopstick bag to form a set of chopsticks.

Such a chopstick for chopsticks can be manufactured by using the apparatus for manufacturing semi-finished chopsticks shown in FIG. In this case, a pallet 28 shown in FIG. 10 is used in place of the pallet 24 used in the device for manufacturing semi-finished chopsticks.

The pallet 28 has a flat bottom portion 28.
a, a pair of side wall portions 28b provided on both side edges of the bottom surface portion 28a, and an inner back wall portion 28c provided on one side edge of the bottom surface portion 28a. An opening 28d is provided at a position facing the opening 28c.

On the bottom surface 28 a of the pallet 28, a plurality of cut pieces 16 obtained from the flat plate 11 are placed in the process of manufacturing the semi-finished chopsticks 15. Each of the cut pieces 16 is selected only when cut to a width dimension equal to the cutting pitch of the flat plate material 11, and the cut pieces 16 cut to a width dimension smaller than the cut pitch at both left and right edges of the flat plate material 11 are Not used.

Each of the cut pieces 16 has the cut surface 12 on the lower side and the bark 10b on the upper side, and the longitudinal direction thereof is along each side wall 28b, and the inner back wall 28 of the pallet 28 is
It is arranged on the bottom surface part 28a in a state where it abuts on c.

In the case of this example, the vertical dimension of each of the cut pieces 16 placed on the bottom surface portion 28a is not uniform enough to reach the width dimension of the semi-finished chopsticks 15, so that the cut pieces 16 are not uniform. FIG. 10 shows the state of being placed on the pallet 28.
As shown in (2), the upper surface of each cutting piece 16 is in an irregular state. Further, there is a cut piece 16 having an upper surface having a bark 10b and curved in an arc shape.

The interval between the side walls 28b of the pallet 28 is set so that a predetermined number of cut pieces 16 are fitted in a state of being aligned in the width direction. The vertical dimension of each side wall 28b and the inner wall 28c is set higher than the minimum width dimension of the chopstick material 17a to be manufactured.
The side surface (upper surface) of the bark 10b of No. 6 protrudes above the side wall portions 28b and the inner back wall portion 28c.

The pallet 28 having such a structure is attached to the chain 22 of the revolving transport mechanism 20 instead of the pallet 24 in the apparatus for manufacturing semi-finished chopsticks shown in FIG. A predetermined number of cut pieces 16 are placed on each of them in a predetermined state. In this example, the pallet 2 on which the cut pieces 16 are placed
4 sequentially passes through only the first cutting mechanism 40, the second cutting mechanism 50, and the third cutting mechanism 60, and the first horizontal cutting mechanism 30
The final vertical cutting mechanism 70 does not pass through.

When the pallet 28 is conveyed to the first cutting mechanism 40, the plurality of cut pieces 16 placed on the pallet 28
Is a cutting blade 42a of the rotary cutter 42 in a rotating state.
Thereby, each upper part is roughly cut. This allows
Each cut piece 16 has substantially the same vertical dimension.

Thereafter, the pallet 28 is moved to the second cutting mechanism 5.
0, and the upper surface of each cut piece 16 on the pallet 28 is
It is finely cut by the second cutting blade 52a. This second
The pallet 28 that has passed through the cutting mechanism 50 is transported to the third cutting mechanism 60, where the upper surface of each cutting piece 16 is cut by the cutting blade 62 a of the rotary cutter 62.
By this, finish cutting is performed more finely. The chopstick material 16a (FIG. 9) can be obtained by such cutting. Each of the obtained chopsticks 16a,
Each end is formed into a tapered shape (pre-attached), and the surface is polished to be used as chopsticks.

Next, an embodiment of the method for producing chopsticks of the present invention will be described in detail below.

First, in the method for producing chopsticks according to the present invention, FIG.
As shown in the figure, one piece of chopsticks out of the remaining material 17 which is the remaining material obtained by removing the flat material 11 which becomes the semi-finished product of chopsticks 15 from the back plate 10 having a crescent-shaped cross-section obtained by cutting pillars, plates and the like from the log. The chopsticks 18 having a tapered shape as shown in FIG. In addition, in the process shown in FIG.
If any waste material 17d remaining after cutting 7c is thicker than the thickness of one chopstick, tapered chopsticks 18 are similarly manufactured using the waste material 17b. These scraps 17 and waste materials 17b are collectively referred to as remaining materials 19 (FIG. 12).

When the chopsticks 18 are manufactured using the remaining material 19, the manufacturing apparatus shown in FIG. 3 can be used. However, in the manufacturing apparatus of FIG.
The height position of the zero saw blade 32 is set lower than when cutting the semi-finished chopsticks 15 and set at a height position (including the height dimension of the pallet) corresponding to the thickness of one chopstick. deep.

The manufacturing process of the tapered chopsticks 18 shown in FIG. 11 will be described below.

First, when the chain 22 of the circulating transport mechanism 20 is circulated, each pallet 24 attached to the chain 22 is horizontally transported along the upper surface of the case 23, and the remaining material is placed on each pallet 24. 19 is the cut surface 19a
Are placed in order, with the side facing down.

The remaining material 19 placed on each pallet 24 is conveyed to the horizontal cutting mechanism 30 and shown in FIGS. 12 (a) and 12 (b).
Is cut along the horizontal direction as shown in FIG. 4 and divided into chopstick flat plate material 19b and waste material 19b. The flat plate material for chopsticks 19b after this processing is divided into the first cutting mechanism 40 and the second cutting mechanism 5
The workpiece is sequentially conveyed to the zero and third cutting mechanisms 60, and after being subjected to cutting by each mechanism, is conveyed to the vertical cutting mechanism 70.

In the vertical cutting mechanism 70, the chopstick flat material 19b placed on the pallet 24 is pressed by the pressing plates 73 and 74, and the saw blade 7 of the rotary blade 72 is pressed.
2a, the pallets 24 are arranged at a predetermined pitch in the width direction.
Are cut perpendicularly along the moving direction of each.

Through the above steps, an elongated rectangular parallelepiped chopstick material 18a (FIG. 11) is obtained. The thus manufactured elongated rectangular parallelepiped chopsticks 18a are conveyed to a known pre-setting machine (not shown), and the chopsticks 18a are pre-processed so that the tapered chopsticks as shown in FIG. 18
(Rose chopsticks) can be obtained.

In the above steps, if the cut surface of the chopstick flat plate material 19b cut by the horizontal cutting mechanism 30 is in a good condition, the first cutting mechanism 40, the second cutting mechanism 50, and the third cutting mechanism 60 can be used. It is not necessary to perform all of the cutting steps, and any one or two cutting steps or all the cutting steps may be omitted.

Then, the tapered chopsticks 18 (rose chopsticks) manufactured as described above are bundled as a pair into two pieces or put in a chopstick bag to produce one set of chopsticks. Is done.

An example in which the tapered chopsticks 18 are bundled with a band will be described below.

First, when one piece of chopsticks is bundled one by one (two pieces), a conventional method is to wind a tape-shaped band (with glue on the back side) around the outer surface of the chopsticks with the two pieces of chopsticks together. Has been adopted. However, in this method, the operation of winding the band is complicated, and some skill is required to cleanly wind the band with two chopsticks aligned.

Therefore, according to the present invention, as shown in FIGS. 13A and 13B, a band 10
0, the ring-shaped band 100 is fitted from the tapered side of the chopsticks 18 and two chopsticks are bound, thereby simplifying the work and improving efficiency. In addition, when such a ring-shaped band 100 is used, a beautiful finished state can always be obtained regardless of the skill level of the operation.

Next, an example of a processing apparatus for automatically manufacturing the ring-shaped band 100 will be described with reference to FIG.

The processing apparatus shown in FIG.
And a molding guide 102 provided thereon and a seal bar (heater) arranged opposite to the mandrel 101
103 and a cutter 104 provided below the mandrel 101, and forms a sheet paper P intermittently supplied from above the apparatus at a constant pitch (pitch corresponding to the length of the band 100). It is wound around the mandrel 101 while being formed into a cylindrical shape by the guide 102. A hot melt adhesive is applied to a portion of the sheet paper P that will become the joining portion P1, and the joining portion P1 is pressed and heated by the seal bar 103 to thermally press the joining portion P1 of the sheet paper P. Can be.

Then, by cutting the cylindrical paper sequentially fed downward from the mandrel 101 by the cutter 104 each time the sheet paper P is fed, the ring-shaped paper strip 100 can be automatically manufactured. Has become. Note that such a processing apparatus is realized at the present stage.

[0085]

As described above, according to the manufacturing method of the present invention, chopsticks can be manufactured using discarded chopsticks and remaining material after manufacturing semi-finished chopsticks using the back plate without discarding. The back plate can be effectively used without waste. As a result, it can greatly contribute to forest protection and environmental protection.

[Brief description of the drawings]

FIG. 1 is an explanatory view of each step in a conventional method for manufacturing chopsticks.

FIG. 2 is a perspective view of a chopstick material manufactured in an embodiment of the present invention, FIG. 2B is a perspective view of an end material used for manufacturing the chopstick material, and FIG. c).

FIG. 3 is a schematic view showing an example of a manufacturing apparatus used for manufacturing the chopstick material of FIG.

FIG. 4 is a perspective view of a pallet used in the manufacturing apparatus of FIG. 3;

FIG. 5 is a view showing a configuration of a horizontal cutting mechanism of the manufacturing apparatus of FIG. 3;

6 is a side view of a rotary cutter used for a first cutting mechanism of the manufacturing apparatus of FIG.

FIG. 7 is a side view of a rotary cutter used for a third cutting mechanism of the manufacturing apparatus of FIG.

8 is a schematic side view of a cutting blade used for a vertical cutting mechanism of the manufacturing apparatus of FIG.

FIG. 9 is a perspective view of a chopstick for chopsticks manufactured in an embodiment of the present invention.

FIG. 10 is a perspective view showing the structure of a pallet used when manufacturing the chopstick material for Rikyu chopsticks shown in FIG. 9;

FIG. 11 is a perspective view of chopsticks manufactured by the manufacturing method of the present invention.

12 is an explanatory diagram of a manufacturing process of the chopstick material shown in FIG.

FIG. 13 is an explanatory diagram of a method of bundling chopsticks obtained by the manufacturing method of the present invention.

FIG. 14 is a diagram schematically illustrating an example of a band processing device used when bundling chopsticks.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 back plate 10 a flat surface 10 b bark 11 flat plate 12 cut surface 13 cut piece 15 semi-finished chopsticks 16 cut piece 16 a chopstick material for Rikyu chopsticks 17 end material 17 a chopstick material 18 chopsticks 18 a chopstick material 19 residual material 19 b flat plate material for chopstick DESCRIPTION OF SYMBOLS 20 Orbiting conveyance mechanism 21 Sprocket 22 Chain 24 Pallet 25 Input part 26 End material removing part 30 Horizontal cutting mechanism 31 Pulley 32 Saw blade 40 First cutting mechanism 41 Motor 42 Rotary cutter 50 Second cutting mechanism 52 Rotary cutter 60 Third cutting mechanism 62 Rotary cutter 70 Vertical cutting mechanism 72 Rotary blade 100 Band

Claims (1)

[Claims] 1. A method of manufacturing chopsticks using a back plate generated when a pillar, a plate, or the like is cut from a log,
Of the remaining material that is left after cutting out the flat material that is a semi-finished chopstick product from the back plate, use the remaining material that cannot secure the width of one chopstick without discarding it, and use the remaining material. , Chopsticks 1
The chopsticks are cut to a thickness equivalent to the thickness of the chopsticks, and the processed chopsticks are cut at a pitch corresponding to the width of one chopstick. A method for producing chopsticks, characterized by obtaining a chopstick.