JPH0433609B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for producing wood strips such as toothpick material.

[Conventional technology]

Conventionally, for example, toothpick materials have been made by vertically splitting a black-barked tree called Kuromoji or Kurobunju, cutting the vertically split pieces into flat shapes, and cutting thin pieces of wood that are cut into two widthwise. It is used.

That is, as shown in Fig. 8, if the diameter of the tree 2 with the bark 1 is relatively large, it is divided into four equal parts (or five equal parts, six equal parts, etc.) from the center of the cross section. (or five or six pieces, etc.) of vertically divided pieces 3 are obtained,
As shown in Fig. 9, if the diameter of the tree 2 is relatively small, it is divided into thirds from the center of the cross section to obtain three vertical pieces 3, and then the vertical pieces 3 are cut. There is.

During the cutting process, as shown in FIG. 10, both edges 3a, 3a of the vertically divided piece 3 are cut,
The cut surface 3b that appears in the shape of a mountain is cut to become flat, thereby obtaining a piece of wood 4. Thereafter, as shown in FIG. 11, this piece of wood 4 is further cut at the center portion 4b in the width direction to obtain two pieces of wood 41. At this time, preferably both side edges 4a, 4a of the skin part 1 of the wood strip 41 are cut into a chamfered shape.

As shown in FIG. 12, the wood strip 41 obtained above is cut with a knife or the like so that one end becomes a sharp point 39a, and is made into a black letter toothpick 39 with a black peel 1 attached. Ru.

[Problem to be solved by the invention]

Conventionally, the cutting operations shown in FIGS. 10 and 11 have been performed manually by skilled craftsmen. For this reason, there is a problem in that production efficiency cannot be improved and costs cannot be reduced due to personnel costs and the like.

[Means to solve the problem]

The present invention solves the above-mentioned problems and automates the cutting operation for turning vertical pieces of trees with bark into thin pieces of wood. A pair of conveyance rolls that sandwich and convey the vertically divided pieces, and a support stand and a roll cutter that are arranged to sandwich the vertically divided pieces during conveyance; The supporting base has a U-shaped groove that supports the attached surface, and the other roll has a V-shaped groove that supports the split surface of the vertically divided piece. extending in the conveyance direction, and forming a recess separated from the skinned surface of the vertically divided piece with a gap in the middle of the U-shaped groove; the roll cutter is disposed opposite to the recess,
A double-edged blade that cuts both edges of the vertically divided piece, an intermediate blade that cuts the split surface of the vertically divided piece into a flat surface between the both edge blades, and a vertically divided piece that is divided into two in the width direction between the intermediate blades. The main feature of the invention is that it is equipped with a cutting blade that cuts in a manner similar to that shown in FIG.

The second means consists of a pair of conveyor rolls that sandwich and convey the vertical pieces of a tree with bark, a support stand and a roll cutter arranged to sandwich the vertical pieces being conveyed, and a chamfered cutter. rolls; of the transport rolls, one roll has a U-shaped groove that supports the skinned surface of the vertically split piece, and the other roll has a V-shaped groove that supports the split surface of the vertically split piece. The support stand has a U-shaped groove extending in the conveyance direction for supporting the skinned surface of the vertically divided piece, and has a gap from the skinned surface of the vertically divided piece at a midway part of the U-shaped groove. forming a recess that separates the cutter; the roll cutter has double-edged blades that are arranged to face the recess and cut both side edges of the vertically divided piece; and a cut surface of the vertically divided piece is cut into a flat surface between the double-edged blades. and a cutting blade that cuts the vertically divided piece into two in the width direction at the middle of the intermediate blade; The main feature is that it is equipped with a tapered blade that cuts both side edges of the skin part into a chamfered shape.

〔Example〕

An embodiment of the present invention will be described in detail below based on the drawings.

(Overall Configuration) In FIG. 1, in order to explain the conveyance direction of the vertically divided pieces, the conveyance guide table 6 has a plurality of guide grooves 7 for guiding the vertically divided pieces 3 toward the conveyance direction. In the illustrated example, three stripes are formed.

A set of conveyance roll means 8 constitutes a pair of upper and lower conveyance rolls 9 and 10 that sandwich and convey the vertically divided piece 3, and each roll is driven and rotated synchronously in the direction of the arrow shown in the figure by means of support shafts 11 and 12, respectively. be done. The lower conveyor roll 10 supports the skinned surface of the vertically divided piece 3.
A plurality of shaped grooves 10a are formed corresponding to the guide grooves 7, and the upper conveying roll 10 has V-shaped grooves 9a that support the chevron-shaped split surfaces 3b of the vertically split pieces 3 in the U-shaped grooves 10.
A plurality of strips are formed corresponding to a. In the illustrated example, two sets of the conveyance roll means 8 are provided in series in the conveyance direction.

Subsequently, a roll cutter 13 and a support stand 14 are placed above and below the vertically divided piece 3 being transported.

The support stand 14 is connected to the base stand 16 by an adjustment bolt 15.
A plurality of U-shaped grooves 17, three in the illustrated example, are formed in the conveying direction to support the peeled surface of the vertically divided piece 3 being conveyed on the upper surface, and are supported on the upper surface so as to be vertically adjustable.
In the middle of the U-shaped groove 17, a recess 18 is formed which is separated from the skinned surface of the vertically divided piece 3 with a gap.

Above the support stand 14, the roll cutter 1
3, a guide means 19 is arranged, the guide means 19 having a guide member 20 located transversely to the three U-shaped grooves 17.

The roll cutter 13 is arranged to face the recess 18 and is driven and rotated by a support shaft 21 in the direction of the arrow shown in the figure. Note that details of the blade of the roll cutter 13 will be described later.

A restraining means 22 is disposed above the support stand 14 and following the roll cutter 13. This restraining means includes a sliding piece 23 positioned in a direction crossing the three U-shaped grooves 17, and a spring 25 provided on the rod portion 24 of the restraining means 22 causes the sliding piece 23 to form a U-shape. It is biased in the direction of the groove 17.

After cutting the longitudinally split piece 3 into a flat piece of wood 4 using a roll cutter 13, chamfering rolls 26 are arranged to cut both side edges 4a of the skin part of the piece of wood 4 into a chamfer shape while the flat piece of wood 4 is being conveyed. has been done. This chamfering roll 26 is driven and rotated by a support shaft 27 in the direction of the arrow shown in the figure. Note that details of the blade of the chamfering roll 26 will be described later.

Finally, a set of delivery means 30 consisting of a pair of upper and lower delivery rolls 28, 29 is arranged, and the upper and lower delivery rolls 28, 29 are driven and rotated in synchronization in the direction of the arrow in the figure by support shafts 31, 32, respectively. Both delivery rolls each have flexible bodies 28a and 29a made of elastic synthetic resin, rubber, or the like, and elastically clamp and deliver the cut piece of wood 4. In the illustrated example, two sets of this one set of sending means 30 are provided in series in the conveying direction.

(Specific structure and operation) Guide the vertically divided piece 3 to the guide groove 7 of the conveyance guide table 6 so that the skinned surface is located at the bottom of the groove (Fig. 2),
When protruding from the guide groove 7, the protruding end of the vertically divided piece 3 is pinched by the conveyor rolls 9, 10 of the conveyor roll means 8 and conveyed. At this time, the U-shaped grooves 10a of the transport roll 10 suitably support the skinned surface of the vertically split piece 3, and the V-shaped grooves 9a of the transport roll 9 suitably support the chevron-shaped split surface 3b of the vertically split piece 3. Therefore, the vertically divided piece 3 is smoothly conveyed in a specific position without changing its position by dancing or the like (FIG. 3).

The conveyed vertical piece 3 is sent into the U-shaped groove 17 of the support base 14 while being restrained from jumping up by the guide means 20 of the guide means 19, and the skinned surface of the vertical piece 3 is pushed into the U-shaped groove 17. (Fig. 4).

When reaching the roll cutter 13, the vertically divided piece 3
The cutting of both side edges 3a and the split surface 3b shown in FIG. For this reason, the roll cutter 13 has double-edged blades 40 for cutting both side edges 3a of the vertically divided piece 3, and a vertically divided piece 3 between the double-edged blades 40.
An intermediate blade 41 that cuts the mountain-shaped split surface 3b into a flat surface.
and a double edge blade 42 that cuts the vertically dividing piece 3 into two in the width direction at the middle of the intermediate blade 41 (FIGS. 5 and 6). In the illustrated example, one cutter means 36 consisting of the double edge blades 40, the intermediate blade 41, and the cutting blade 42 is provided corresponding to one strip of the U-shaped groove 17 of the support base 14, and one cutter means 36 is provided corresponding to one strip of the U-shaped groove 17 of the remaining U-shaped groove 17. Correspondingly, another cutter means 35, which will be described later, is provided.

The vertically divided piece 3 cut by the roll cutter 13 is made into two pieces of wood 41, and the U-shaped groove 1 of the support base 14
7, the sliding piece 2 of the restraining means 22
3 and removes the thorns and fibers that line the wood piece 4 in a standing pattern (Fig. 1).

Subsequently, the wood strip 41 is cut by a chamfering roll 26.
Both side edges 4a of the skin portion shown in FIG. 11 are cut into a chamfered shape. For this purpose, the chamfering roll 26 is equipped with a tapered blade 38 for cutting the both side edges 4a, and the tapered blade 38 is provided with a tapered blade 38 for cutting the two wood strips 4a.
The tapered grooves 38a and 38b are formed by cutting both side edges of each skin part in a chamfered manner (seventh groove).
figure). In the illustrated example, two taper blades 38 are provided corresponding to one strip of the U-shaped groove 17 of the support base 14, and another taper blade 37, which will be described later, is provided corresponding to the remaining two U-shaped grooves 17. It is being

The cut wood strips 41 are then elastically held between the upper and lower delivery rolls 28, 29 of the delivery means 30 and sent out (FIG. 1).

The sent-out wood strips 41 are sent to a subsequent process separate from this device, and after being cut into a predetermined length, are processed into toothpicks 39 as shown in FIG.

(Additional Example) Another cutter means 3 of the roll cutter 13 described above
5 and another tapered blade 37 of the chamfering roll 26 are used to cut the material for a candy holder 5 as shown in FIG. 14, rather than a toothpick 39 as in the present invention.

For this reason, another cutter means 35 of the roll cutter 13 has double-edged blades 33 for cutting both side edges 3a of the vertically divided piece 3, and a chevron-shaped cut surface 3b of the vertically divided piece 3 between the double-edged blades 33. An intermediate blade 34 is provided for cutting the material into a flat surface. Therefore, the purpose is to simply cut the vertically divided piece 3 into a flat piece of wood without dividing it into two parts like the above-mentioned cutter means 36, and as shown in FIG. By cutting the portion 3a and the chevron-shaped split surface 3b, a flat piece of wood 4 as shown in FIG. 13 is obtained.

Further, in the chamfering roll 26 as well, another tapered blade 37 constitutes one groove-shaped taper blade that cuts both side edges 4a of the skin portion of the piece of wood 4 in a chamfer shape.

As shown in FIG. 14, one end of the flat piece of wood 4 is cut with a knife or the like in a direction that reduces the board thickness from the skin part 1 to form an inclined thin part 5a, and the thin part 5a is Tapered parts 5b, 5b are formed by cutting both side edges so that the tips are sharp,
Further, the other end is cut at a steep slope in the direction of decreasing the board thickness from the skin 1 to form a tail slope part 5c, thereby forming the sweets stick 5.

The present invention uses a roll cutter 13 to cut all of the vertically divided pieces 3 conveyed in plurality into strips of wood 41.
and a chamfering roll 26 can also be configured,
As in this additional embodiment, at least one of the plurality of vertical pieces 3 is cut into a thin wooden piece 41 for a toothpick, and the other vertical piece 3 is cut into a flat piece for a candy bar material. It may also be configured to cut into pieces of wood for other purposes, such as the pieces of wood 4.

〔Effect of the invention〕

As a result of the above-described configuration, the present invention preferably conveys the vertically divided piece 3 while being positioned at a predetermined position, and cuts the vertically divided piece 3 being conveyed into a predetermined piece and divides it into two to form a toothpick material. 41 pieces of wood such as
Since it is possible to automate the cutting process, it has the effect of improving productivity and contributing to lower processing costs.

[Brief explanation of drawings]

FIG. 1 is a front view schematically illustrating the whole of one embodiment of the present invention, FIG. 2 is a vertical side view of the conveyance guide table, FIG. 3 is a vertical side view of the conveyance roll means, and FIG.
The figure is a vertical side view of the support stand and guide means, Figure 5 is a front view of the support stand, roll cutter, and chamfered roll, Figure 6 is a side view of the support stand and roll cutter, and Figure 7 is the side view of the chamfered cutter. Vertical side view, Figures 8 and 9 are explanatory diagrams showing the method of vertically splitting a tree, Figure 10 is an explanatory diagram showing the cutting locations of the vertically divided pieces, and Figure 11
The figure is an explanatory diagram showing the cutting points for dividing a piece of wood into two parts, Fig. 12 is a perspective view of a toothpick, Fig. 13 is an explanatory diagram showing how to cut a piece of wood for a candy bar, and Fig. 14 is a candy bar. FIG. 1... Bark, 2... Tree, 3... Vertical split piece, 3a... Both sides edges, 3b Cut surface, 4a... Both sides edges, 4b... Center part,
6... Conveyance guide stand, 9, 10... Conveyance roll, 9a...
V-shaped groove, 10a...U-shaped groove, 13...roll cutter,
14... Support stand, 17... U-shaped groove, 18... Recessed part, 20
... Guide member, 23 ... Rubbing piece, 26 ... Chamfer roll, 28, 29 ... Delivery roll, 36 ... Cutter means, 38 ... Tapered blade, 39 ... Toothpick, 41 ... Wood strip.

Claims (1)

[Scope of Claims] 1. A pair of transport rolls that sandwich and transport a vertical split piece of a tree with bark, and a support stand and a roll cutter that are arranged to sandwich the vertical split piece being transported: One of the rolls has a U-shaped groove that supports the skinned surface of the vertically split piece, and the other roll has a V-shaped groove that supports the split surface of the vertically split piece. A U-shaped groove for supporting the skinned surface of the piece is provided extending in the conveying direction, and a recess is formed in the middle part of the U-shaped groove to be separated from the skinned surface of the vertically divided piece with a gap; , arranged opposite to the recess,
A double-edged blade that cuts both edges of the vertically divided piece, an intermediate blade that cuts the split surface of the vertically divided piece into a flat surface between the both edge blades, and a vertically divided piece that is divided into two in the width direction between the intermediate blades. 1. A device for manufacturing thin pieces of wood such as toothpick material, comprising: a cutting blade for cutting in a manner similar to that of a toothpick; 2. A pair of transport rolls that sandwich and transport a vertical split piece of a tree with bark, a support stand and a roll cutter arranged to sandwich the vertical split piece being transported, and a chamfering roll; , one roll has a U-shaped groove that supports the skinned surface of the longitudinally split piece, and the other roll has a V-shaped groove that supports the split surface of the longitudinally split piece; A U-shaped groove for supporting the skinned surface of the vertically divided piece is provided extending in the conveying direction, and a recessed part is formed at a midway part of the U-shaped groove to be separated from the skinned surface of the vertically divided piece with a gap; a double-edged blade that is arranged to face the recess and cuts both edges of the vertically divided piece; an intermediate blade that cuts the divided surface of the vertically divided piece into a flat surface between the double-edged blades; and a cutting blade that cuts the vertically split piece into two in the width direction; the chamfering roll cuts both sides of the skin of the strip obtained by dividing the vertically split piece into two with the roll cutter into a chamfer shape. 1. An apparatus for manufacturing thin pieces of wood such as toothpick material, comprising: a tapered blade for producing toothpick material.