JPH072166Y2 - Automatic plane - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an automatic plane, and more specifically to a mechanism for adjusting the height of the table of the automatic plane to set the cut amount of wood. Is.

[Conventional technology]

In the automatic plane, the rotary plane is arranged above the table serving as the material feeding path. Therefore, when setting the cut amount of wood, usually, the height of the table is adjusted by an elevating mechanism, and the height of the wood on the table is changed relative to the plane. The table lifting mechanism operates by controlling the rotation of a reversible motor that is a drive source. In addition, when setting the cut amount of wood, a method in which the lifting mechanism is operated to raise the table and wood, and when the set position is reached, the position detection switch detects this and stops the operation of the lifting mechanism. Has been adopted.

The following is a typical conventional example of such a wood cutting amount setting method.

For example, a holding member is provided above the lumber inlet on the table, and the holding member has a detecting piece that rotates by receiving the lifting force of the timber accompanying the rising of the table, and the detecting piece is at a predetermined turning position. When it reaches, a position detection switch that touches the detection piece and stops the table lifting mechanism is arranged. Also, the holding member is screwed onto the screw shaft, and the screw shaft is rotatably attached to the plane casing (head) above the table.

Then, the screw shaft is arbitrarily rotated to vertically move the holding member, and thus the detection piece and the position detection switch. In this way, if the height positions of the detection piece and the position detection switch are changed, the ascending / descending position of the table also changes correspondingly, and it becomes possible to set the cut amount of wood.

[Problems to be solved by the invention]

In the above-mentioned conventional technique, the height position of the detection piece and the position detection switch is changed to set the cut amount of wood by an arbitrary rotation operation of the screw shaft, but in this method, the following points to be improved was there.

That is, in the case of the screw shaft method, in order to simplify the display of the cutting amount and the like, it is necessary to set the cutting amount in the entire range from the minimum to the maximum in one rotation (1 pitch) of the screw shaft. Therefore, the scale accuracy for displaying the depth of cut becomes coarse, and it is difficult to set the fine depth of cut. Further, the depth of cut setting mechanism itself tends to be large and expensive.

The present invention has been made in view of the above points, and it is an object of the present invention to improve the setting accuracy of the depth of cut and easily set a fine depth of cut, and the structure of the depth of cut setting mechanism itself. It is aimed at simplification and low cost.

[Means for solving problems]

The present invention is configured as follows to achieve the above object. Hereinafter, in order to facilitate understanding of the contents of the present invention, first
The description will be given with reference to the reference numerals of the embodiment shown in FIGS.

That is, according to the present invention, the casing 3 in which the rotary plane body 4 is arranged is arranged so as to face the upper surface of the table 2 serving as a material feeding path,
The wood 6 traveling on the table 2 is cut by the rotary plane 4, and the height position of the wood 6 on the table 2 is adjusted by a table elevating mechanism (not shown) to adjust the cut amount of the wood 6. In the automatic plane using the adjustment method, the casing 3
When the wooden piece 6 on the table 2 is lifted together with the table 2 through the table lifting mechanism, the detection piece 8 receives the force and rotates, and when the detection piece 8 rotates to a certain position, the detection piece 8 is detected. A position detection switch 7 for contacting a part of the piece 8 to stop the operation of the table lifting mechanism, and
The position detection switch 7 is arranged so as to be slidable within a predetermined range by a knob 11 attached to the casing 3, and
The switch contact portion 18 of the detection piece that comes into contact with the position detection switch 7 by the rotation of the detection piece 8 has a width (shown in FIG. 2) corresponding to the sliding range of the position detection switch 7, Switch contact part 18 or position detection switch 7
When the position detection switch 7 slides on the sliding part of the, the inclined portion (the portion indicated by reference numeral 18 ', which changes the distance G required for contact between the switch contact portion 18 of the detection piece 8 and the position detection switch 7,
In the embodiment, it is provided on the switch contact portion 18 side. ) Is formed, and the distance G required for this contact is changed by the sliding operation of the position detection switch 7 by the knob 11 to set the cut amount of wood.

[Action]

With such a structure, for example, when the switch contact portion 18 of the detection piece 8 is formed with the inclined portion 18 'as shown in FIG. 2, even if the height position of the position detection switch 7 is constant, When the position detection switch 7 is slid horizontally (in the direction of arrow C) with the knob 11, the distance G required to contact the switch contact portion 18 and the position detection switch 7 when the detection piece 8 is rotated. Will change. Specifically, as the position detection switch 7 is located on the higher position 18a side of the inclined portion 18 ', the distance G becomes narrower, and as the position detection switch 7 is located on the lower position 18b side of the inclined portion 18', the distance G becomes wider. As a result, when the wood cutting amount is set, the wood 6 on the table 2 is raised together with the table 2 through the elevating mechanism, and the raising force causes the detection piece 8 to rotate in the arrow X direction. The degree of rotation of the detection piece 8 (the degree of rotation of the detection piece from a certain reference position to contact with the position detection switch 7) increases in proportion to the degree. Consequently, the rising stop position of the table 2 and the wood 6 when the detection piece 8 contacts the position detection switch 7 increases in proportion to the degree of rotation of the detection piece 8. Therefore, if the position detection switch 7 is slid by the knob 11, the cut amount of the wood 6 can be finally set by changing the height position of the wood 6 with respect to the plane body 4.

Further, instead of providing the switch contact portion 18 with the inclined portion 18 ', the sliding portion of the position detection switch 7 has an inclined portion (not shown).
In the case of forming, the height position of the position detection switch 7 can be changed by sliding the position detection switch 7 along the inclined portion. Even in such a case, the sliding of the position detection switch 7 changes the distance G required for contact between the switch contact portion 18 on the detection piece 8 side and the position detection switch 7, and the tilted portion 18 on the detection piece side described above. Similarly to the case where ′ is provided, the cut amount of wood can be set by sliding the knob 11.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a front sectional view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA ′ of FIG. 1, FIG. 3 is a partial arrow view of FIG. FIG. 4 is a circuit diagram for setting the wood cutting amount of this embodiment.

In the figure, reference numeral 1 is a column for guiding a table up and down, which is planted in a base (not shown), and a table 2 is fitted to the column 1 so as to be vertically movable. The table 2 is supported by a table lifting mechanism (not shown). The table raising / lowering mechanism is set to perform the raising / lowering operation by the forward / reverse rotation of a reversible electric motor 16 (shown in FIG. 4) described later.

Reference numeral 3 denotes a casing (head) fixedly arranged at the uppermost part of the column 1, and at a position facing the upper surface of the table 2 of the casing 3, a plane cylinder 4 and a material feeding roller 5 are rotatably supported. The plane body 4 and the material feeding roller 5 are rotationally driven via an electric motor and a rotation transmission mechanism (not shown).

3a is the entrance of the material feeding path, and when the wood 6 is fed into the entrance 3a, the wood 6 is automatically fed on the table 2 by the material feeding roller 5 during the cutting process, and the upper part of the wood 6 is held by the plane 4 Be cut by.

At a position corresponding to the wood feeding portion 3a of the casing 3, a wood cutting amount setting mechanism as described below is arranged.

The wood cutting amount setting mechanism includes a normally closed switch 7, a detection piece 8,
It is composed of a knob 11 for cutting setting operation, a cutting amount setting scale 12 (shown in FIG. 3) and the like.

The normally closed switch 7 is formed integrally with the knob 11. The normally closed switch 7 is inside the casing 3, and the knob 11 is the casing 3
A direction orthogonal to the traveling of the wood through the long groove 19 (shown in FIG. 3) provided in the width direction of the casing 3 so that these elements 7 and 11 are located outside (the width direction of the casing 3). It is mounted to slide on. Knob 11 is a knob
A spring 10 is attached to the shaft of 11, and the position detection switch 7 is suspended by the spring 10.

On the other hand, the detection piece 8 is rotatably supported by a support pin 9 inside the casing 3. The working end 8a of the detection piece 8 is
As shown in FIG. 1, when the detection piece 8 is placed on the upper surface of the wood 6, the detection piece 8 is bent and formed at a substantially right angle to the table 2, and the tip end 18 of its operating end 8a faces the normally closed switch 7. It is set to do so.

When the detection piece 8 does not contact the wood 6, the detection piece 8 is locked by the pin 13 and is in the reference position.

Further, as shown in FIG. 2, the detection piece 8 has a width corresponding to the sliding range of the normally closed switch 7 in the width direction of the casing 3, and the tip 18 of the detection piece 8 is inclined in the width direction. Part 18 ′
Are formed.

Therefore, the positional relationship between the normally closed switch 7 and the inclined portion 18 'is such that when the normally closed switch 7 is slid along the long groove 19 in the direction of arrow C, the normally closed switch 7 is located at the maximum position of the inclined portion 18'. Top 18
The distance G between the normally closed switch 7 and the inclined portion 18 '(the distance until the detection piece 8 comes into contact with the position detection switch 7) becomes narrower as it moves to the side a, and the normally closed switch 7 becomes the maximum of the inclined portion 18'. lower end
The distance G between the normally closed switch 7 and the inclined portion 18 'is set to increase as it moves toward the 18b side. Further, the relationship between the normally closed switch 7 and the detection piece 8 is that when these elements 7 and 8 are separated, the switch of the reversible motor 16 for lifting the table is closed, and at this time, the normal rotation circuit of the reversible motor 16 is If is closed, raise table 2. On the other hand, when these elements 7 and 8 come into contact with each other, the switch of the reversible electric motor 16 is turned off, the reversible electric motor 16 is turned off, and at this time, the table 2 which has been elevated so far is set to stop. The contact between the detection piece 8 and the normally-closed switch 7 is such that when the table 2 is raised, the wood 6 (the wood 6 is set at the wood inlet 3a) on the table 2 moves the detection piece 8 in the arrow X direction. It is performed by pushing up and rotating.

Therefore, the amount of upward movement of the table 2 and the wood 6 is determined by the positional relationship between the normally closed switch 7 and the inclined portion 18 'of the detection piece 8, and the normally closed switch 7 is located at the lowermost end 18b side of the inclined portion 18'. The longer the time (distance) required for the switch 7 and the detection piece 8 to come into contact with each other, the greater the degree to which the table 2 and the wood 6 are raised. The degree of rise of the timber 6 changes the height positional relationship between the plane body 4 and the timber 6, and the cut amount of the timber 6 changes by changing the positional relationship.
Normally-closed switch 7 is used to reduce the depth of cut for finish cutting (to reduce the depth of cut and clean the cutting surface).
Is set on the uppermost end 18a side and the depth of cut is increased,
The normally closed switch 7 is set to the lowermost end 18b side. To summarize the above, if the positional relationship between the normally closed switch 7 and the inclined portion 18 'of the detection piece 8 is changed via the knob 11, the cut amount of the wood 6 can be changed to a continuous point.

In the present embodiment, paying attention to the above points, the cutting amount of the wood 6 is set in advance corresponding to the positional relationship between the respective portions of the inclined portion 18 'and the normally closed switch 7, and the position of the knob 11 is based on this. As shown in FIG. 3, a scale 12 showing the relationship between the depth and the depth of cut is provided parallel to the sliding groove 19 of the storage case 3.

Next, the wood cutting amount setting operation of the present embodiment having the above-mentioned configuration and the operation based thereon will be described with reference to the circuit of FIG.

In the circuit diagram of Fig. 4, turn on the power supply 14 and turn on the normally open switch.
When the switch 15 is turned on, the lifting circuit of the table lifting mechanism is closed, the reversible motor 16 is rotated in the forward rotation direction via the normally closed switch 7, and the table 2 is lifted. When the table 2 is lifted, the detection piece 8 in the reference position is rotated by receiving the lifting force of the wooden piece 6. When the detection piece 8 contacts the normally closed switch 7, the normally closed switch 7 is opened, the reversible motor 16 is stopped, and the raising operation of the table 2 and the wood 6 is also stopped. In this case, the stop positions of the table 2 and the wood 6 can be arbitrarily set by adjusting the knob 11 fixed to the normally closed switch 7 to an arbitrary position of the scale 12 by a sliding operation as described above. In this way, ultimately, the desired cutting amount of the wood 6 can be set by changing the set positional relationship of the wood 6 with respect to the plane body 2.

When the normally open switch 17 is turned on after cutting, the reverse rotation circuit of the reversible electric motor 16 is closed, the electric motor 16 is reversely rotated, and the table 2 is lowered.

Therefore, according to the present embodiment, the amount of wood cut can be arbitrarily set only by sliding the position detection switch 7 with the knob 11, and the amount of wood cut can be easily operated. Moreover, since the amount of wood cut can be set by forming the inclined portion 18 'on the detection piece 8 and sliding the position detection switch 7, the space of the cut amount display scale 12 is also set to the switch 7.
Can be sufficiently secured according to the sliding range (sliding groove 19), and as a result, the precision of the cutting amount setting scale can be improved and the fine cutting amount can be set.

Further, the structure of the cutting amount setting mechanism can be simplified, and the manufacturing cost can be reduced.

[Effect of device]

As described above, according to the present invention, since the wood cutting amount can be arbitrarily set by the sliding operation of the position detection switch by the knob, a sufficient cutting amount setting scale can be set according to the sliding range of the knob (arbitrary detection switch). A space can be secured, and by extension, the precision of the cut amount setting scale can be enhanced to set a fine cut amount. Further, the structure of the cutting amount setting mechanism itself can be simplified, and the cost of the entire apparatus can be reduced.

[Brief description of drawings]

FIG. 1 is a partially omitted sectional front view showing an embodiment of the present invention,
2 is a sectional view taken along the line AA 'in FIG. 1, FIG. 3 is a partial arrow view of FIG. 1 seen from the direction B, and FIG. 4 is a drive circuit diagram of the table lifting mechanism used in this embodiment. is there. 2 ... Table, 3 ... Casing, 4 ... Rotating plane,
6 ... Wood, 7 ... Position detection switch (normally closed switch), 8 ... Detection piece, 11 ... Knob, 12 ... Cut amount setting scale, 18 ... Switch contact part, 18 '... Inclined part, 19 ……
Sliding groove.

Claims (1)

[Scope of utility model registration request] 1. A casing in which a rotary hoisting drum is arranged is arranged so as to face an upper surface of a table serving as a material feeding path, and the wood traveling on the table is cut by the rotary hopping drum, and is cut on the table. In an automatic plane, which adjusts the height position of a certain piece of wood by a table lifting mechanism to adjust the amount of cut of the wood, the casing has wood on the table together with the table via the table lifting mechanism. A detection piece that rotates when receiving the force when it rises, and a position detection switch that stops the operation of the table lifting mechanism by contacting a part of the detection piece when the detection piece rotates to a certain position. And the position detection switch is arranged so as to be slidable within a predetermined range by a knob attached to the casing, and the position detection switch is rotated by rotating the detection piece. A width corresponding to the sliding range of the position detection switch is given to the switch contact portion of the detection piece that comes into contact, and the position detection switch slides on the switch contact portion of the detection piece or the sliding portion of the position detection switch. Then, an inclined portion that changes the distance required for contact between the switch contact portion of the detection piece and the position detection switch is formed, and the distance required for this contact is changed by sliding operation of the position detection switch by the knob, and An automatic plane that is characterized by setting the depth of cut.