JPS59111803A - Punching device for woody material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention allows a cylindrical blade and a pressing tool to which a nail-shaped body is attached so as to be able to move in and out to be relatively close to each other, so that a predetermined part of wood chips can be removed extremely efficiently and with high precision. The present invention relates to a wood material punching device which can not only punch well into a columnar shape, but also can accurately form a depression on the end face of the punched piece at the same time as the punching, to indicate the center of the punched piece.

For example, a tapered column made of branch wood or the center layer of logs with a relatively small diameter,
As shown in Figure 8, defective parts such as roots, rotten knots, and hollow parts (
&) It can be suitably employed as a buried wood (b) for complete modification. One method for manufacturing such a columnar body (0) is to remove the outer side of the center layer portion 0 of a round cut material (5a) (shown in FIG. 4) made by cutting a branch or the like with a machete or the like, and thereby form a columnar body. After forming a material, the peripheral surface of the material is finished into a tapered shape using a wood lathe or the like, or the round cut material (5
A conceivable method is to directly turn a) into a tapered shape using a wood lathe. However, in these manufacturing methods, the machining allowance is too large in any case, requiring a great deal of effort and time for finishing, making mass production completely impossible, and also having the disadvantage of high manufacturing costs. be.

An object of the present invention is to provide a vine wood material punching device that solves these problems, and one embodiment thereof will be described below with reference to the drawings.

In FIGS. 1 to 3, the wood material punching device (1) of the present invention is
It is equipped with a pressing tool (3) in which a nail-shaped body can be freely moved in and out, and a cylindrical blade (4), and a predetermined part of a wooden material (5) is punched into the cylindrical blade (4). In this embodiment, the opposite side plate α is attached to the inner surface of the − side plate 00 of the U-shaped frame (9) that slides the force field plate (7) erected on the base (6) from side to side.
While attaching the pressing tool (3) protruding toward υ,
A rectangular plate-shaped support plate 0η is fixed and erected close to the inner surface of the other side plate (11) and parallel to the other side plate 0υ, and the inner surface of the support plate α is opposed to the pressing tool (, 3). hand,
Attach the cylindrical blade (4). Note that the wood quality 1; j'
For (5), for example, as shown in Figure 4, branches of various trees such as cypress and cedar, or logs with a relatively small diameter and about the thickness of branches, are cut into rounds using a circular saw. Use the round cutter (5a). In the description of this embodiment, a thickness of approximately 3 am is assumed, and due to cutting errors, both end surfaces (S 1) (S 2) are located at the axis (Ll) of the central layer portion (to). The case is shown in which a round cut material that is not properly finished at right angles is used.

In this embodiment, as shown in FIG. 2, the pressing tool (3) has a cylindrical shape and has a disk-shaped fixing plate α0 fixed to the side plate αQ at its base, and a central portion at the tip thereof. Pressing rod 07 has a relatively deep blind hole QO.
1, and the tip of the pressing rod α is formed into a flat shape with a screw thread. Further, a nail-shaped body (A) having a fixing piece 0υ at the base of a nail-shaped main body (E) formed at the tip is installed in the blind hole Ql with a coil spring q■ interposed, and the nail-shaped body (E) is The main body qQ has a hole C2 bored approximately in the center of the front surface (198) of the lid U.
Insert G and pull it out. Therefore, due to the biasing action of the coil spring 1, the retaining piece 0υ of the hook-shaped body (A) comes into contact with the front part of the lid QQ, and the lid Q! Stand out from 1. Note that the diameter of the pressing rod Q7) should be made larger than the diameter of the cylindrical blade (4), which will be described later, for the '1'+79 cutting material (5a).
This is preferable in order to press the cylindrical blade (4) toward the cylindrical blade (4) without any force.

As shown in FIG.
It has a cylindrical shape with a length equal to or more than the thickness of a), and its tip is shaped into a tapered shape with a smooth inner surface and a tapered outer surface, so that the tip has a sharp edge 7 There is a lunge (a) around it. In addition, on the support plate @, the above-mentioned pressing rod σ
A through hole (G) is bored that is aligned with the axis of η and has a diameter equal to the inner diameter of the cylindrical blade (4). (qo) and screwed together, the axes (L2) of the cylindrical blade (4) and the pressing tool (3) will coincide. (See figure m1) The inner diameter of the cylindrical blade (4) is selected depending on the diameter of the desired punched piece.

In addition, on the inner surface of the other side plate 01), there is a through hole 0 (Js bamboo-shaped blade).
An extrusion rod 0υ that can be inserted through the cylindrical blade (4) and slightly protrude from the tip of the cylindrical blade (4) is fixed and protruded. And, as in the case of +jiJ press tool (3), is the extrusion rod 0 man? It consists of a cylindrical extruded rod main body ('3) and a lid body (c), and a coil spring (c) is fully interposed in a blind hole (g) recessed in the center of the three extruded rod main bodies. A nail-shaped body αQ consisting of a shaped body (B) and a retaining piece is installed, and an extruded rod body C (2) is installed.
A hole (41) into which the nail-shaped main body (A) can be inserted is provided at the tip of
By screwing the lid body (G) having >, the nail-shaped main body (B) is formed so as to normally protrude from the shell surface due to the biasing action of the coil spring (To).

Note that the gap between both side plates QO) Qi) of the U-shaped frame (9) is made by inserting the extruded rod 01) into the cylindrical blade (4) and
When the is brought into approximate contact with the support plate (to), the nail-like body @ (4 (34) protruding from the pressing tool (3) and the extrusion rod Oυ (
22a) V is set to such an extent that a gap slightly larger than the thickness of the circular cut material (5a) is created between (40a). Coil Spring (Incorporated) Gl is made by pressing the center layer α frame of the circular cut material (5a) against the nail-shaped body (A) (4 (11 tip (22a) (40a) and pressing it against the coil spring) (G). A material having a spring constant such that when compressed, a depression is formed in the center layer portion a is used. Also, a - side plate (10) is fixed and erected at a lateral position parallel to the - side plate OQ. Hydraulic cylinders (c) are attached to the outside of the six mounting bases, and their rods (c)
F) The end is pivoted to the base of one side plate 00. Therefore, due to the expansion and contraction of the hydraulic cylinder, the U-shaped frame (9
) can slide. Note that the inner surface of the mounting base (4) and the base (
In 6), at the side positions of the other side plate (11), stop members a and bθ0ωQ that abut against the base of the − side plate or the other side plate 0]) and stop the U-shaped frame (9) are arranged. . The stop member a
In e5il, the U-shaped frame (9) is stopped at a position where the other side plate θυ substantially touches the support plate (cutter), and the stop member bθ6) is such that the tip of the suppressor (3) is approximately the same as the tip of the cylindrical blade (4). At the point of contact,
Stop the U-shaped frame (9).

Next, using the wood material punching device (1) of the present invention, the circular cut material (5
The procedure for punching out, for example, the central layer portion 0■ in a) will be explained.

First, as shown in FIG. 5(a), one side plate 00 is attached to the stopper member a.
The nail-like body (tip (40a) of 40 protrudes from the extruded rod 0υ that protrudes from the cylindrical blade (4) while in contact with θ0 k
, after applying it to the end face (Sl) of the circular cutting material (5a), the pushing tool (3) is gradually brought closer to the cylindrical blade (4) by extending the hydraulic cylinder 0 niya, and the extrusion rod Gυ retreats. 5th
As shown in Figure (b), the one end surface (
Sl) comes into contact with the blade part (a) of the cylindrical blade (4). After that, as shown in the cylinder 51N (Q), the tip (2
2a) approaches the cylindrical blade (4) until the tip (2a) comes into approximate contact with the other end surface (S2) of the circular cutting material (5a). Position the round cut material (5a) so that it hits the center (01) of the center layer part 0. In this state, as shown in Figure 5(d), the round cut side (5a
) is pressed with the pressing tool (3), the nail-shaped body (a)
moves backward against the biasing force of the coil spring (c), and at this time, the center layer portion 0
The center of the other end surface (S2) of the plate, that is, the punched piece 97 to be described later.
) has a depression (47
&) is formed. After that, further round cutting material (5 &) E
When pressed by the pressing tool (3), as shown in FIG. ), which makes it easier for the cylindrical blade (4) to bite into the circular cut material (5a). ), the peripheral surface is finished smooth and punched out. After the center layer portion 03 is completely punched into the cylindrical blade (4), the other side plate Oυ abuts against the stop member b00 and the U-shaped frame (9) stops. After tightening, when the hydraulic cylinder is contracted, the extrusion rod 0υ becomes
After extruding the punched piece θ from the cylindrical blade (4) and discharging the punched piece 0'/) from the cylindrical blade (4), as shown by the solid line in the figure, - The U-shaped frame (9) stops when the side plate 0Q collides with the stop member aθ0. In addition, due to the regression of the nail-shaped body 01 during extrusion by the extrusion rod 01),
A depression (47b) is formed to clearly define the center of one end surface (4781) of the punched piece θ.

At least the other end surface (4782) of the punched piece θ formed in this manner, that is, the pressing surface (3
A substantially concentric growth ring is formed on the surface in contact with S), and the center thereof is located substantially at the center of the other end surface (4782). In addition, in this embodiment, the flanges c of the cylindrical blade (4) are screwed onto the support plate Q with the buffer material (a) interposed, so that due to the buffering effect of the buffer material (a), , it becomes possible to finish the peripheral surface of the punched piece @η even more smoothly.

The circumferential surface of the manufactured punched piece o is finished as a tapered surface if necessary, and the recesses (47a) and (47b) can be utilized at that time. That is, in order to finish the tapered surface, for example, as shown in FIGS. 6 and 7, a punching piece (4η This is done by clamping the material and then gradually cutting its circumferential surface with a cutting blade (a) whose cutting edge is gently inclined from one end to the other and which rotates at high speed in the same direction as the punched piece (4). However, in that case, in the depressions (47a) (47b),
By fitting the positioning protrusion υ0υ provided in the center of the holding shaft (6) 09), the punched piece 07)
The axial center of the holding shaft (49) (41) can be very easily aligned with the axial center of both holding shafts (49) (41), allowing highly accurate and stable surface cutting.According to the experiments of the present inventor, Even if only one recess of the punching piece 07) and the positioning protrusion of one holding shaft are fitted together, the punching piece (4:
It has been confirmed that the axes of the holding shafts (19) and (19) can almost exactly coincide with the axes of the holding shafts (19), and therefore, a recess is formed in one end surface of the punched piece C71. It can be said that it is almost sufficient even if the In that case, the nail-shaped body is attached to the pressing tool (3).

As described above, the wood material punching device of the present invention allows the cylindrical blade and the pressing tool to be relatively close to each other, so that a predetermined portion of the wood material can be punched into a column shape extremely efficiently and with high accuracy. Compared to conventional methods such as manufacturing columnar materials using a machete or the like, not only can productivity be greatly improved, but manufacturing costs can also be significantly reduced. Moreover, since the nail-shaped body (A) is attached to the pressing tool (3), it can be effectively used as a positioning mark when post-processing the peripheral surface of the punched piece O into a tapered shape as described above. It becomes possible to form the depression accurately at the same time as punching out one punched piece.

In addition, in the wood material punching device of the present invention, in addition to a cylindrical blade, polygonal cylinder shapes such as a square cylinder, a hexagonal cylinder, and a hexagonal cylinder can be used as the cylindrical blade, and the length thereof is The material may be slightly shorter than the thickness of the wood material as long as it can punch out the wood material. Furthermore, a relatively thin cylindrical body as a cylindrical blade? If used,
The tip becomes a sharp blade. Further, the pressing tool is not limited to the cylindrical shape shown in the embodiment, as long as it can press the wooden material toward the cylindrical blade. Contrary to the case of the embodiment, the rough pressing tool and the cylindrical blade can be brought close to each other, or both can be brought close to each other. etc. by various means. Furthermore, by preparing in advance cylindrical blades with cross sections of various sizes, punched pieces of various sizes can be formed. At this time, it is preferable that the pressing area of the pressing tool is also reduced in accordance with the cross-sectional dimension of the cylindrical blade.

[Brief explanation of the drawing]

Is Fig. 1 an embodiment of the present invention? FIG. 2 is an exploded perspective view showing a pressing tool and a nail-shaped body; FIG. 3 is an exploded perspective view showing a cylindrical blade and an extrusion rod; FIG. 5(a) to 5(f) are explanatory diagrams explaining the operation of the device according to the present invention, and FIG. 6 is a perspective view illustrating how to finish the circumferential surface of a punched piece as a tapered surface using a rotary cutting blade. Figure 7 is a plan view showing the peripheral surface of the punched piece finished as a tapered surface, and Figure 8 is a perspective view showing the case where the columnar body is used as a filler for repairing defective parts of wood material. It is. (1)... Wood material punching device, (3)... Pressing tool, (
88)... Pressing surface, (4)... Cylindrical blade, (5)...
・Wood material, (a)...nail-like body, (22a)...tip part of nail-like body, (L4ka...punching piece, (47'a)・
... hollow. Patent application Yasukiyo Oioue Agent Patent attorney Kiyoichi Okamoto

Claims (1)

[Claims] (1) A punching device capable of punching a predetermined part of a wooden material, which includes a cylindrical blade having a cylindrical shape and a sharp blade at the tip, and a pressing tool having a pressing surface at the tip, The tips of the two are arranged opposite each other, and the cylindrical blade and the pressing tool can be relatively approached, and the nail-like body with a sharp tip is always pressed by the biasing action of a spring provided on the pressing tool. A depression is formed in the center of the end surface of the punched piece to be punched out by the tip portion of the nail-shaped body so as to protrude from the pressing surface of the pressing tool, and when the nail-shaped body is sunk into the pressing tool. A wooden side punching device characterized in that it is provided with: