JP2001150229A - Vertical band saw machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vertical band saw machine capable of improving cutting processing precision by preventing flexure even when a workpiece is long. SOLUTION: A sub-table 21 on a saw machine main body 3 side is supported by struts 31 at both ends and also supported at a specified height by multiple supporting means 85 over a part between the ends supported, and thereby prevented from flexing. Since the supporting means 35 is lowered to avoid a collision when the saw machine main body 3 approaches within a specified distance while being lifted to support the sub-table 21 at the specified height when the saw machine main body 3 passes, the part between the ends supported of the sub-table 21 is always supported by at least one supporting means 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track type vertical band sawing machine in which a sawing machine body performs cutting while moving a heavy workpiece.

[0002]

2. Description of the Related Art Referring to FIGS. 5 and 6, in a vertical band sawing machine 101 suitable for cutting a work W which is conventionally heavy, a sawing machine body 103 moves with respect to the work W. Generally, a cutting process is performed.

In such a vertical band sawing machine 101, the sawing machine main body 103 can move up and down on guide devices 107 and 109 provided on a base 105 in a front and rear direction (a direction perpendicular to the paper surface of FIG. 5). It is provided in. The sawing machine main body 103 has a C-shape as a whole and has a gap G at the center.
A driving saw wheel 111 rotatably driven by a driving motor (not shown) and a rotatable upper and lower driven saw wheel 11
A loop-shaped band saw blade BS is wound around 3U, 113L.

On the other hand, a main table 115 is provided outside the sawing machine body 103 in parallel with the guide devices 107 and 109.
A sub-table 117 for supporting the work W in cooperation with the main table 115 is provided at the gap G position of the saw body 103. The main table 115 and the sub-table 117 have a band saw blade B
A predetermined distance D, which is the path of S, is provided at a predetermined height.

With the above configuration, the work W is set on the main table 115 and the sub table 117, and the driving saw wheel 111 is rotated by a driving motor (not shown) to move the band saw blade BS. In this state, the saw body 103
Is moved to cut the workpiece W.

[0006]

However, in such a conventional technique, since the lower part of the sawing machine body 103 passes under the sub-table 117, the sub-table 117 is provided only at both ends. The fulcrum can be supported, and cannot be supported in the middle part.

For this reason, when the cutting length is long (about 5 m), there is a problem that the bending of the sub-table 117 becomes large and the cutting accuracy is reduced.

When the thickness of the sub-table 117 is increased in order to increase the rigidity, the gap G
However, since the cutting height of the workpiece W becomes small, there is a problem that the size of the work W that can be cut is limited.

SUMMARY OF THE INVENTION An object of the present invention is to pay attention to the above-mentioned prior art, and a vertical band sawing machine capable of preventing bending even when a work becomes long and improving cutting accuracy. Is to provide.

[0010]

According to a first aspect of the present invention, there is provided a vertical band sawing machine according to the first aspect of the present invention, which moves a sawing body having a band saw blade running vertically. A vertical band sawing machine for cutting a work placed on a main table provided outside the sub-table and a sub-table provided inside the main body of the sawing machine. It is characterized by comprising a plurality of vertically movable support means for supporting at a height position.

Therefore, the subtable on the side of the sawing machine main body is supported at both ends by the pillars, and the supporting portion is supported at a predetermined height by a plurality of supporting means, so that the sawing machine main body approaches. And descend to avoid collision.

According to a second aspect of the present invention, there is provided the vertical band saw machine according to the first aspect, wherein the support means causes interference with the main body when the main body approaches within a predetermined distance. It lowers to avoid and rises when the sawing machine body passes to support the sub-table.

Accordingly, the supporting means descends to avoid the main body when the sawing machine approaches within a predetermined distance, and rises when the main body passes through to support the subtable again at the predetermined height.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

1 to 3 show an entire vertical band saw machine 1 according to the present invention. In such a vertical band sawing machine 1, the sawing machine main body 3 has a frame 5 having an overall C-shape and having a gap G at the center, and the front surface of the frame 5 (the right side surface in FIG. 2). In FIG. 5, a loop-shaped band saw blade BS is wound around a driving saw wheel 7 driven to rotate by a driving motor (not shown) and upper and lower driven saw wheels 9U and 9L which are rotatable on the front surface of the frame 5 as well. Accordingly, the band saw blade BS rotates and runs at a position in front of the frame 5.

The lower left end of the sawing machine main body 3 is supported by a lower guide device 11 so as to be movable in the front-rear direction (the left-right direction in FIG. 2). That is, the rollers 17 provided on the sawing machine main body 3 travel on the guide rails 15 provided on the base 13 in the front-rear direction and move back and forth.

On the other hand, on the right side of the sawing machine body 3 in FIG. 1, a main table 19 for supporting a work W is provided at a predetermined height in a front-rear direction parallel to the guide rail 15. At the position of the gap G of the sawing machine main body 3, a sub-table 21 supporting the work W together with the main table 19 is provided in parallel with the main table 19 and at a predetermined interval D which is a path of the band saw blade BS. Have been.

The main table 19 is provided with a column 23 standing on the base 13.
9 are supported by the struts 23 not only at the front and rear ends but also in the middle of the span.

The support 23 on the side of the saw machine main body 3 is provided with a linear guide 25 over the entire length in the front-rear direction, and a slide 27 provided on the saw machine main body 3 extends along the upper surface of the linear guide 25. Move back and forth. Thus, the sawing machine body 3 is supported so as to be able to move back and forth in cooperation with the lower guide device 11 described above.

The lower surface of the sub-table 21 is supported by a plurality of lightweight box-shaped steels 29 provided in the front-rear direction. In this sub-table 21, the main body 3 passes under the sub-table 21, so that the columns 31 can be installed only at the front and rear ends. An unloading device 33 for unloading the cut work W to the main table 19 is provided on the upper surface of the sub-table 21.

A plurality of lifters 35 as supporting means which can be raised and lowered at appropriate intervals are provided at intermediate positions between the supports of the sub-table 21 so as to avoid interference with the saw blade main body 3 when the saw blade main body 3 passes. Have been.

Therefore, the lifter 35 is always raised to support the lower surface of the lightweight box-shaped steel 29 of the sub-table 21 so as not to be bent at a predetermined height. When approaching, the lifter 35 is lowered to pass through the saw blade main body 3. And, when the sawing machine body 3 passes,
The lifter 35 is raised again to support the lower surface of the sub-table 21 at a predetermined height.

Next, the cutting operation will be described with reference to FIGS. First, multiple (here two)
The work W is placed on the main table 19 supported by the support 23 and the sub-table 21 supported by the support 31 at both ends and the plurality of lifters 35 at the support, and driven by a drive motor (not shown). The band saw blade BS is caused to travel by rotating the saw wheel 7 (see FIG. 4A).

The cutting operation is performed by moving the sawing machine body 3 forward by a moving mechanism (not shown). At this time, the saw blade body 3
When approaching within a predetermined distance from the lifter 35 supporting the sub-table 21, the lifter 35 is lowered to avoid interference with the saw blade main body 3 (see FIG. (B)).

When the saw blade body 3 has passed, the lifter 35 that has been lowered is raised again and the sub-table 21 is lifted.
Is supported so as not to bend (see FIG. (C)).

When the cutting process is completed, the cut work W is carried out to the main table 19 by the carrying-out device 33 on the sub-table 21.

From the above results, since the plurality of lifters 35 provided at predetermined intervals below the sub-table 21 support the sub-table 21 so as not to bend, the weight of the sub-table 21 can be reduced. , High-precision cutting can be performed. When the saw blade main body 3 approaches within a predetermined distance, the lifter 35 can be lowered to avoid collision. Then, after passing, the sub-table 21 is raised again to support the sub-table 21, so that the sub-table 21 is always supported by at least one lifter 35, so that bending can be prevented.

It should be noted that the present invention is not limited to the above-described embodiment of the present invention, but by making appropriate changes,
It can be implemented in other aspects. In the above-described embodiment of the present invention, the vertical band saw 1 having two lifters 35 has been described, but the number of lifters 35 may be two or more.

[0029]

As described above, in the vertical band sawing machine according to the first aspect of the present invention, the subtable on the sawing machine main body side is supported at both ends by the columns, and the supporting portion is formed by a plurality of supporting means. Since the sub-table is supported at the predetermined height position, the sub-table can be prevented from being bent, the sub-table can be reduced in weight, and high-precision cutting can be performed. In addition, since the sawing machine body descends when approaching, collision can be avoided.

In the vertical band sawing machine according to the second aspect of the present invention, the support means lowers only the sawing machine body that has approached within a predetermined distance to avoid collision, and raises the sawing table main body after passing so as to again set the sub-table. Always support at least 1
The individual supporting means can support the supporting portion of the sub-table to prevent bending, reduce the weight of the sub-table, and perform high-precision cutting.

[Brief description of the drawings]

FIG. 1 is a front view showing an entire vertical band sawing machine according to the present invention.

FIG. 2 is a side view as viewed from a direction II in FIG.

FIG. 3 is a plan view seen from a direction III in FIG. 2;

FIGS. 4A to 4C are explanatory diagrams showing a cutting operation.

FIG. 5 is a front view schematically showing a conventional vertical band sawing machine.

FIG. 6 is a side view schematically showing a conventional vertical band sawing machine.

[Description of Signs] 1 vertical band saw machine 3 saw machine body 19 main table 21 sub table 35 lifter (supporting means) W work BS band saw blade

Claims (2)

[Claims] 1. A method according to claim 1, further comprising the step of moving a saw body having a band saw blade traveling in a vertical direction on a main table provided outside the saw body and a sub-table provided inside the saw machine body. A vertical band sawing machine for cutting a workpiece, comprising a plurality of vertically movable support means for supporting the supporting portion of the sub-table at a predetermined height from a lower surface. Vertical band sawing machine. 2. The support means lowers to avoid interference with the sawing machine body when the sawing machine body approaches within a predetermined distance, and rises when the sawing machine body passes to support the sub-table. 2. The method according to claim 1, wherein
The vertical band sawing machine described.