JP2001158004A - Cutting device of reciprocating finish planing machine for woodworking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device of a reciprocating finish planing machine for woodworking capable of cutting under a simple structure at a low cost. SOLUTION: Tool bits 5a, 5b with cutting edges a, b directed toward cutting edge heads 6a, 6b are provided on knife stocks 4a, 4b. In addition, work contact faces 7a, 7b are provided at the rear part of the cutting edges a, b and the pivots A, B of the knife stocks 7a, 7b are set below the rear position of the cutting device including the work contact faces 7a, 7b. Further, rotating means C, D for imparting a projecting tendency action to the cutting edges a, b and position regulating means E, F for setting the projecting positions of the cutting edges a, b are installed at the knife stocks 4a, 4b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a finishing machine for woodworking, which cuts a work material conveyed reciprocally by a fixed planer blade.

[0002]

2. Description of the Related Art A reciprocating woodworking planer for woodworking is for transferring a work material charged upstream of a work position to a downstream side and returning the work material again from a downstream side to an upstream side. In between, the lower surface of the processing material is subjected to cutting. This type of planer is awarded for being capable of so-called one-man work, and is widely used in the construction industry and the like using long pillars.

A conventional reciprocating woodworking planing machine illustrated in FIG. 6 has one planer blade 101 with its cutting edge directed toward the front input side (right position) and the other planer with its cutting edge directed rearward. The blade 102 is provided on each of the knife stocks 103 and 104, and performs two cutting operations while the workpiece W makes one reciprocation.

That is, in the above-described planer, only one planer blade 101 is effective during the forward transfer process of the work material W, and the other planer blade is stopped. The planer blade 102 is effective, and one planer blade 101 is at rest. Therefore,
The cutting edge of the resting planer blade is rubbed from behind by the lower surface of the workpiece W, which causes a problem that the cutting edge is chipped and the finished surface is damaged.

[0005] A finisher for woodworking which solves such a problem is disclosed in Japanese Patent Application Laid-Open No. 6-238604. As shown in FIG. 7, the knife stocks 103a, 103
b is provided at the lower portion of the knife stock 1 with a knife stock 1 which is driven by motors 104a and 104b.
03a and 103b are moved in and out to move the planer blades 101a and 101a.
01b is set to be switched between the cutting position and the retreat position.

[0006]

According to the above-described woodworking planer, harmful contact friction to the cutting edge can be reliably eliminated. However, this cutting device requires a motor, a retracting operation means, a detection switch for driving the motor with good timing, a control means, and the like, and has a drawback that the configuration is complicated and the cost is greatly increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and it is possible not only to reliably perform the operation of retracting and retracting the cutting edge, but also to simplify the configuration and greatly reduce the cost. It is an object of the present invention to provide a reciprocating woodworking machine for finishing woodworking.

[0008]

In order to achieve the above object, a reciprocating woodworking planer for cutting woodwork according to the present invention is constructed as follows.

That is, the gist of the present invention is to provide a woodworking planer for cutting a work material transferred toward the cutting edge, wherein the knife stock is provided with a cutting edge having the cutting edge directed toward the cutting die. A contact surface is provided at the rear of
A rotating support for the knife stock is provided immediately below the rear position including the contact surface, a rotating means for rotating the knife stock to give a protruding tendency to the cutting edge, and restricting a rotating range of the knife stock. That is, the position regulating means is provided.

[0010] When the knife stock is rotated about the rotation fulcrum, the contact surface and the blade edge of the planer blade move up and down in the same direction. The amount of movement at that time is greater for a cutting edge far from the fulcrum than for a contact surface close to the fulcrum. The knife stock provided with the protruding tendency by the rotating means is set in the rotating position by the position regulating means, and the cutting edge of the planer blade is set to the cutting position.

In the above-described cutting apparatus, when the workpiece is transferred toward the cutting edge, the cutting can be performed while the cutting edge holds the projecting position. When the work material is transferred in the opposite direction, the work material comes into contact with and comes into contact with the contact surface, and accordingly, the cutting edge is largely immersed and set to the retracted position.

According to a second aspect of the present invention, in the cutting apparatus for a reciprocating woodworking planing machine according to the first aspect, the rotating means is constituted by weight distribution of a knife stock including a blade cap and a planer blade. Make a summary.

[0013] In this case, the cutting edge of the planer can always be given a protruding tendency without requiring a special operation mechanism. In addition, the immersion operation of the cutting edge can be performed in the same manner.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a reciprocating woodworking planer cutting machine according to the present invention will be described below. The embodiments described below are intended to exemplify an apparatus for embodying the technical idea of the present invention, but do not specify a cutting apparatus according to the present invention.

FIG. 1 is a side view of a wood finishing board, and FIG.
Is a cross-sectional plan view, 1 is a frame, 2 is a horizontal table provided at the top of the frame 1, 3 is a circular turntable 4a, 4a, 4
b is the two front and rear knife stocks provided in the recess 8 of the turntable 3 and 5a and 5b are the knife stocks 4a and 4b.
The planer blades 6a and 6b respectively attached to the blades are blade caps provided corresponding to the planer blades 5a and 5b.

The above-mentioned knife stocks 4a and 4b are configured symmetrically in the front-rear direction (the left-right direction in FIG. 1). One planer blade 5a faces the cutting edge a forward, and the other planer blade 5b faces the cutting edge b backward. And arrange them. These planer blades 5
a and 5b cut the workpiece W transferred from the blade caps 6a and 6b toward the cutting edges a and b. Therefore, one planer blade 5a processes the workpiece W transferred to the left, and the other planer blade 5b processes the workpiece W transferred to the right.

7a and 7b are located close to the cutting edges a and b, and the contact surfaces provided at the rear thereof (see FIG. 3). A and B are slightly behind the contact surfaces 7a and 7b. Rotation fulcrums provided at lower positions of 4a and 4b These rotation fulcrums A and B are provided with an upward projection 9 provided in the concave portion 8 and a concave portion 1 of the knife stock 4a and 4b fitted to the projection 9.
0. (See Fig. 4)

The contact surfaces 7a, 7 from the pivot points A, B
The distance to b and the distance from the pivot points A and B to the cutting edges a and b are set so that the latter is larger than the former.
C and D are rotating means for rotating the knife stocks 4a and 4b to give the blade edges a and b a protruding tendency. The rotating means C and D are provided between the recess 8 and the knife stocks 4a and 4b. The compression spring 11 is provided.

When the knife stocks 4a and 4b are automatically rotated by their weight distribution, a rotating means can be constituted by this weight balance. Can be omitted.

E and F are means for regulating the protruding positions of the protruding ends of the cutting edges a and b. The restricting means E and F are abutting screws 12 which abut against the lower ends of the knife stocks 4a and 4b.
It is constituted by. G and H are knife stocks 4a and 4b
When the blades rotate in the opposite direction and move downward, the retracting position regulating means for setting the retracted position of the cutting edges a and b. The regulating means G and H abut against the other ends of the lower portions of the knife stocks 4a and 4b. It is constituted by screws 13.

Reference numeral 16 denotes an elevating guide established on the frame 1.
Reference numeral 17 denotes a feeder frame movably disposed on a lifting guide 16 Reference numeral 18 denotes a drive motor for raising and lowering the feeder frame 17 via a feed screw type lifting / lowering means 19 and 19 are rotatably provided in the feeder frame 17 A pair of front and rear rollers 20
Is an endless material feeding belt 21 stretched over the rollers 19, 19.
Is a reversible drive motor linked to one roller 19 via a speed reducer.

S is a detection switch provided on the table 2 so as to detect the presence or absence of the workpiece W. An output signal from the detection switch S is transmitted to a reversible drive motor 21 via control means (not shown). The drive motor 21 is inverted with good timing to transfer the workpiece W reciprocally. The feed belt 20 running by the drive motor 21 faces the feed surface in parallel with the surface of the table 2, and presses the upper surface of the workpiece W to transfer it.

The construction of the reciprocating woodworking planer according to one embodiment is as described above. Therefore, when the workpiece W is not on the table 2, the two knife stocks 4a, 4a
b, the cutting edges a, b of the respective planer blades 5a, 5b
Is set at the protruding position. By the way, the blade caps 6a, 6b
Has the same plane as the two surfaces of the table, and has a blade cap 6a,
The amount of protrusion of the cutting edges a and b from the blade 6b is about 0.05 mm. The contact surfaces 7a and 7b are set almost the same as or slightly lower than the cutting edges a and b.

Next, when the work material belt 20 is driven rearward (to the left in FIG. 1) and the work material W is supplied to the table 2 at the front position, the work material W is transferred rearward by the feed surface. You. When the leading end (left end) of the workpiece W reaches the front-facing planer blade 4a on the front side along with the transfer, the cutting edge a that stands by at the protruding position is cut to start cutting. This cutting is performed continuously while the workpiece W is transferred rearward.

Then, the tip of the workpiece W is transferred to the position of the knife stock 4b on the rear side, and when the tip abuts on the contact surface 7b, the knife stock 4b is pressed by the pressing force.
Rotates counterclockwise about the rotation fulcrum B. And
The cutting edge b is largely lowered depending on the distance from the fulcrum, and is set to the retracted position. This immersion and retreat operation is continued while the workpiece W is transported rearward, and can be transported without rubbing the cutting edge b from behind.

When the rear end (right end) of the workpiece W passes through the rear planer blade b, the reversible drive motor 21 reverses and the feed belt 20 runs forward. By this operation, the workpiece W is transferred in the same direction. At this time, the knife stock 4b on the rear side has returned the cutting edge b of the planer blade 4b to the projecting position by the rotating means D, and therefore, the workpiece W is cut by the cutting edge b.

With the transfer of the work material W, the tip (right end) reaches the contact surface 7a of the front knife stock 4a,
When this is pressed, the knife stock 7a rotates clockwise as shown in FIG. The cutting edge a is immersed by this operation and is set to the retracted position, and the workpiece W does not contact the cutting edge a and rub from behind. The immersion operation of the cutting edge a ends when the end (left end) of the workpiece W passes through the planer blade 5a.

As described above, in the finishing planner for woodworking according to the embodiment, the work material W is reciprocated and transferred, and the cutting plane is set to the idle side while the cutting is performed by the front planer blade 5a and the rearward planer blade 5b. Since the cutting edges a and b of 5a and 5b can be retracted and retracted, there is no adverse effect that the workpiece W rubs the cutting edges from behind.

In the above embodiment, the front planer blade 5a is directed forward and the rear planer blade 5b is directed rearward. However, the front planer blade 5a is directed rearward and the rear planer blade 5b is set. May be positive. Also, both planer blades can be directed forward or backward. Further, in one embodiment, two knife stocks are provided, but the number can be arbitrarily determined regardless of the number.

Further, in one embodiment, the compression spring 11 or the weight balance of the knife stock is used as the rotating means C and D, but the suction force by the magnet, the ejection power of the pressurized air and the like act in one direction. And can be implemented as appropriate.

[0031]

As described above, the cutting device for reciprocating woodworking planing machine according to the present invention has a special driving means, a retracting operation mechanism, and a control device for retracting and retracting the resting planer blade. No complicated configuration such as means is required. For this reason, the structure can be simplified, and an excellent effect that it can be implemented at a very low cost is exhibited.

[Brief description of the drawings]

FIG. 1 is a side view of a reciprocating woodworking planer provided with a cutting device according to the present invention.

FIG. 2 is also a cross-sectional plan view.

FIG. 3 is a longitudinal sectional side view showing an outline of a cutting device according to the present invention.

FIG. 4 is an explanatory view showing a state of a cutting process.

FIG. 5 is an explanatory view showing a blade tip retracted state.

FIG. 6 is an explanatory view showing a conventional woodworking planer cutting machine.

FIG. 7 is an explanatory view of a conventional cutting device.

[Explanation of symbols]

 a Blade tip b Blade tip A Rotating fulcrum B Rotating fulcrum C Rotating means D Rotating means E Projecting position regulating means F Projecting position regulating means G Retreating position regulating means H Retreating position regulating means 2 Table 3 Turntable 4a Knife stock 4b Knife stock 5a Planer blade 5b Planer blade 6a Blade base 6b Blade base 7a Contact surface 7b Contact surface 11 Compression spring 12 Butt screw 13 Butt screw

Claims (2)

[Claims] 1. A woodworking finisher for cutting a work material transferred toward a cutting edge, wherein a planer blade having a cutting edge directed toward a cutting die is provided on a knife stock, wherein a contact surface is provided at a rear portion of the cutting edge. A rotating means for rotating the knife stock so as to impart a tendency to protrude the blade edge, and a rotating means for rotating the knife stock to provide a protruding tendency to the cutting edge; A cutting device for a reciprocating woodworking planer, comprising a position regulating means for regulating the surface. 2. The reciprocating woodworking planer cutting machine according to claim 1, wherein the rotating means is constituted by weight distribution of a knife stock including a blade cap and a planer blade.