JPH08323703A - Device for regulating height of table roller in woodworking machine - Google Patents

Abstract

PURPOSE: To simplify height-regulating work of the table roller in an automatic wood planing machine and also to more accurately perform regulation of position. CONSTITUTION: A supporting rod 3 is supported along the rear surface of a table 12 on which material to be worked is placed. A device 1 regulates the projection amount of a table roller 2 supported by projecting the peripheral face from the top face of the table 12 through the supporting rod 3. The supporting rod 3 is vertically parallel moved and downward supported by spring energization 4. On one side, regulation screws 5 are screwed in the supporting rod 3 through the through-holes 12d of the table 12. The supporting rod 3 resists spring biasing 4 by rotary operation in the screwing direction of the regulation screws 5 and is moved upward. The head parts 5b of the regulation screws 5 are pushed on the top face of the table 12 by spring biasing force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for adjusting the height of a table roller for supporting wood as a material to be processed in a woodworking machine such as a planer.

[0002]

2. Description of the Related Art Conventionally, such an adjusting device displaces the height of a support rod for rotatably supporting a table roller to a desired position by changing the tightening position of the adjusting screw, and then the adjusting screw is In general, the fixing nut mounted is tightened to fix the tightening position of the adjusting screw, and the table roller is held at the adjusted height.

[0003]

As described above, in order to adjust the height of the conventional table roller, it is necessary to adjust the tightening position of the adjusting screw and then tighten the fixing screw to fix it. However, the adjustment work was troublesome and troublesome.

Further, when the fixing nut is tightened, the adjusting screw rotates together and the tightening position is displaced, so that it is difficult to finally adjust the table roller to an accurate position.

The present invention has been made to solve these conventional problems, and it is easy to perform the adjustment work, and the table roller height adjusting device in a woodworking machine that can accurately adjust the position of the table roller. The purpose is to provide.

[0006]

Therefore, according to the first aspect of the present invention, the peripheral surface from the upper surface of the table is passed through the support rod supported along the lower surface of the table on which the workpiece is placed. Is a device for adjusting the amount of protrusion of the table roller supported by projecting from the support rod, wherein the support rod is capable of moving in parallel in the vertical direction and is supported by a spring urged downward while the support rod has An adjusting screw is screwed through the insertion hole of the table, and the supporting shaft can be moved upward against the spring bias by rotating the adjusting screw in the screwing direction, and the adjusting screw is pushed by the spring biasing force. The head is pressed against the upper surface of the table.

Further, according to a second aspect of the present invention, the table is supported by protruding the peripheral surface from the upper surface of the table via a support rod supported along the lower surface of the table on which the workpiece is placed. A device for adjusting the amount of protrusion of a roller, wherein the support rod is capable of moving in parallel in the vertical direction and is supported by being biased upward by a spring, while the support rod is adjusted via an insertion hole of the table. A screw can be screwed in, and the support shaft can be moved downward against the spring bias by rotating the adjustment screw in the opposite screw-in direction.
In addition, the flange portion of the adjusting screw is pressed against the lower surface of the table by the spring biasing force.

[0008]

According to the structure of the first aspect, when the adjusting screw is rotated in the screwing direction, the support rod is displaced upward against the bias of the spring, whereby the position of the table roller is raised. On the contrary, when the adjusting screw is rotated in the anti-screw direction, the supporting rod moves downward due to its own weight and spring bias, so that the height of the table roller becomes low.

Here, since the head of the adjusting screw is constantly pressed against the upper surface of the table by urging the supporting rod downward, the adjusting screw is prevented from rotating due to the frictional resistance between the two. From this, it is not necessary to use a conventional fixing nut for fixing the adjustment screw,
Therefore, the conventional tightening work of the fixing nut is eliminated, and the adjustment work is simplified, and since there is no problem of co-rotation of the adjustment screw, the adjustment screw is held at the adjusted position, and by extension, the height adjustment of the table roller is accurate. Can be done.

According to the second aspect of the present invention, when the adjusting screw is rotated in the counter-screw-in direction, the support rod moves downward against the bias of the spring, thereby lowering the position of the table roller. On the contrary, when the adjusting screw is rotated in the screwing direction, the support rod is moved upward by the spring biasing force, so that the height of the table roller is increased.

In this case, since the support rod is biased upward by the spring, the flange portion of the adjusting screw is constantly pressed against the lower surface of the table, so that the frictional resistance between the two prevents the adjusting screw from rotating. This also provides the same effect as above.

[0012]

According to the first or second aspect of the present invention,
The height adjustment work of the table roller can be performed easily and accurately.

[0013]

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows the entire automatic planer board 10 equipped with the table roller height adjusting device 1 of the present embodiment described below. In the automatic planer board 10, the configuration other than the height adjusting device 1 does not need to be particularly changed, and therefore it will not be described in detail, but in the figure, 11 is a base, 12
Is a table supported on the upper surface thereof, 13 is a hand pushing base, 14 is a ruler for material positioning, 15 is a main frame that moves up and down, 16 is a main drum on which a large number of blades are mounted, 17 is the front and rear of the main drum 16. Shows the feed roller located at.

In the height adjusting device 1 of the present embodiment, the height of the table roller 2 rotatably supported with the peripheral surface slightly protruding from the upper surface of the table 12, that is, the protruding height from the upper surface of the table 12. This is a device for adjusting the amount, and the table rollers 2 and 2 are arranged at positions substantially facing the feed rollers 17 and 17.
Both table rollers 2 and 2 are equipped with a height adjusting device 1 having the same configuration. In FIG. 1, only the height adjusting device 1 mounted on one of the table rollers 2 is shown.

As shown, the table roller 2 is rotatably supported by a support shaft 3 via bearings 2a, 2a. The support shaft 3 is supported along the lower surface of the table 12 via the support walls 12a and 12a formed also on the lower surface of the table 12 which also serve as ribs. That is,
A slightly long support hole 12b is formed in each of the support walls 12a, 12a, and the support hole 12b,
The support shaft 3 is supported by inserting the portions near both ends into 12b, respectively, and by extension, the table roller 2 is supported. Therefore, the height of the table roller 2 can be changed within a range in which the support shaft 3 can move within the support hole 2b.

The table roller 2 is supported in a state in which the peripheral surface thereof slightly protrudes from the upper surface of the table 12 through a window portion 12c provided in the table 12.

Support walls 12a, 12a of the support shaft 3
Tensile springs 4 and 4 are respectively interposed between the both ends protruding from the lower end and the lower end of the support wall 12a, whereby the support shaft 3 is spring-biased downward, and the table roller 2 is extended. The table 12 is spring-biased in a direction in which the height of the table 12 decreases.

Insertion holes 12 are formed at the left and right ends of the table 12.
d and 12d are formed and both insertion holes 12d and 12d are formed.
The screw shafts 5a and 5a of the adjusting screws 5 and 5 are respectively inserted in the shafts. The screw shaft portions 5a of the two adjusting screws 5 and 5 are projected below the table 12 and are respectively screwed into the screw holes 3a formed in the end portion of the support shaft 3.

The adjusting screw 5 has a head portion 5b having a large diameter due to the upper end of the screw shaft portion 5a. Since the head portion 5b is formed with a diameter that cannot pass through the insertion hole 12d, Abut on the top surface. Therefore, when the adjusting screw 5 is rotated in the screwing direction, the support rod 3 moves upward. By rotating both adjusting screws 5, 5 in the same direction by the same angle, the support rod 3 moves in parallel. Further, since the support rod 3 is biased downward by the tension springs 4 and 4, the upward movement of the support rod 3 by the rotation operation of the adjusting screws 5 and 5 in the screwing direction causes the tension springs 4 and 4 to move upward. Done against.

The peripheral surface of the head portion 5b of the adjusting screw 5 is treated to prevent slippage during rotation operation.
Further, as shown in FIG. 3, an angle scale 5c for indicating the rotation angle of the adjusting screw 5 with respect to the pointer 12e displayed on the table 12 is displayed on the upper surface of the head 5b. The height of the table roller 2 can be accurately adjusted by determining the rotation angle of the adjusting screw 5 based on the angle scale 5c.

According to the height adjusting device 1 of the present embodiment configured as described above, when the left and right adjusting screws 5 and 5 are rotated by the same angle in the screwing direction, the support rod 3 becomes both tension springs 4 and 4. The table roller 2 is translated in the upward direction, which causes the table roller 2 to be translated in the upward direction,
The amount of protrusion from the upper surface of the. That is, the table roller 2 is adjusted to a higher position.

On the contrary, when both adjusting screws 5 and 5 are rotated in the opposite directions, the support rod 3 is translated downward by the tension springs 4 and 4 and its own weight, whereby the table roller 2 is translated downward. The amount of protrusion becomes smaller. That is, the table roller 2 is adjusted to a lower position.

As described above, the height of the table roller 2 is adjusted by rotating both adjusting screws 5 and 5, but the support rod 3 is always urged downward by the tension springs 4 and 4. Therefore, both adjusting screws 5 and 5 are indirectly urged downward, so that the head portion 5b thereof is
Is always pressed against the table 12. Since the head portion 5b is pressed against the table 12 by the tension spring 4, the frictional resistance between the lower surface of the head portion 5b and the upper surface of the table 12 gives the adjusting screw 5 a resistance in the rotational direction. Therefore, once the position of the adjusting screw 5 in the rotation direction is adjusted, the adjusting screw 5 is fixed to the adjusting position without using another means such as a fixing nut as in the conventional case, and by extension, the height position of the table roller 2 is adjusted. Retained.

As described above, since the position of the adjusting screw 5 is fixed without using a conventional fixing nut or the like, the work for adjusting the height of the table roller 2 is simplified and
Since there is no co-rotation when tightening the conventional fixing nut,
Once the position of the adjusting screw 5 is determined, it is fixed as it is, so that the height of the table roller 2 can be accurately adjusted.

Further, since the head portion 5b is located on the upper surface of the table 12, it is easy to rotate the adjusting screw 5, which also simplifies the adjusting work and enables accurate adjustment.

Various modifications can be made to the embodiment described above. For example, as the spring urging means of the support rod 3, instead of the illustrated tension spring 4, a compression spring may be interposed between the support rod 3 and the lower surface of the table 12, and is shown in FIG. Support rod 3
Is not limited to the structure in which the spring is urged downward, and may be the structure in which the spring is urged upward.

That is, an overhanging edge 12f is provided at the lower end of the supporting wall 12a of the table 12, and a compression spring 6 is interposed between the overhanging edge 12f and the supporting rod 3 to support the supporting rod 3a.
On the other hand, a flange portion 7b may be provided in the middle of the shaft portion 7a of the adjusting screw 7 and the flange portion 7b may be pressed against the lower surface of the table 12 to give a rotational resistance thereto. Further, instead of the compression spring 6, a tension spring may be interposed between the support rod 3 and the table 12 to bias the support rod 3 upward.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a table roller and a height adjusting device, showing an embodiment of the present invention.

FIG. 2 is an overall side view of an automatic planer board.

FIG. 3 is a plan view of an adjusting screw and is a plan view of a flange portion on which an angle scale is displayed.

FIG. 4 is a partially cutaway side view showing a height adjusting device on one side of a table roller according to another embodiment of the present invention.

[Explanation of symbols]

1 ... Table roller height adjusting device 2 ... Table roller 2a ... Bearing 3 ... Support rod 3a ... Screw hole 4 ... Tension spring 5 ... Adjusting screw 5a ... Screw shaft part 5b ... Head 5c ... Angle scale 6 ... compression spring 7 ... adjusting screw, 7a ... shaft part, 7b ... flange part 10 ... automatic planer board 11 ... base 12 ... table 13 ... hand pushing base 14 ... ruler 15 ... main frame 16 ... main drum 17 ... feed roller

Claims (2)

[Claims] 1. A protruding amount of a table roller supported by protruding a peripheral surface from an upper surface of the table via a support rod supported along a lower surface of a table on which a workpiece is placed is adjusted. The support rod is vertically movable in parallel and supported by downwardly biasing the spring, while an adjusting screw is screwed into the support rod through an insertion hole of the table. The support shaft can be moved upwards against the spring bias by a rotating operation of the screw in the screwing direction, and the head of the adjusting screw is pressed against the upper surface of the table by the spring bias. Table roller height adjustment device for woodworking machines. 2. The amount of protrusion of the table roller supported by protruding the peripheral surface from the upper surface of the table via a support rod supported along the lower surface of the table on which the workpiece is placed is adjusted. The support rod is capable of moving in parallel in the vertical direction and supported by upwardly biasing the spring, while an adjusting screw is screwed into the support rod through an insertion hole of the table, The supporting shaft can be moved downward against the spring bias by a rotation operation of the screw in the anti-threading direction, and the flange portion of the adjusting screw is pressed against the lower surface of the table by the spring biasing force. A height adjusting device for a table roller in a woodworking machine.