JP2763599B2 - Vertical band sawing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a vertical band sawing machine that cuts a work placed on a work table with a band saw blade that can move vertically.

(Prior Art) Conventionally, there has been known a vertical band sawing machine in which a workpiece is placed on a plurality of rollers provided on a work table and cut by a vertically movable band saw blade provided on a cutting head. ing.

In this vertical band sawing machine, when feeding a work placed on the roller in a cutting direction toward a band saw blade provided in a cutting head, if there is unevenness on the lower surface of the work, the work is cut in the cutting direction. The work swings from side to side.

(Problems to be Solved by the Invention) By the way, if the work swings right and left while cutting (work is being fed in the cutting direction) while the lower surface of the work has irregularities, the cutting line suddenly changes. Will be. As a result, there is a problem in that the band saw blade itself is damaged and the band saw blade is bent at the same time.

An object of the present invention is to improve the above-mentioned problem, so that even if the work has an uneven surface on the lower surface and the work is cut with a band saw blade, the work does not damage the band saw blade itself and does not bend. To provide a vertical band sawing machine.

[Constitution of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a work table on which a work is placed, and a band saw blade which can move vertically in order to cut the work. And a cutting head arranged in a direction orthogonal to the work table and cutting the work with the band saw blade by relatively moving the cutting head and the work, A vertical band sawing machine was constructed by providing a work clamp device on the work table, which clamps the other end of the work opposite to one end of the work to be cut by the band saw blade and can swing up and down.

(Operation) By employing the vertical band saw machine of the present invention, the workpiece is cut by the band saw blade provided on the cutting head based on the relative movement between the work and the cutting head in the vertical band saw machine. When there is unevenness or the like on the lower surface of the work, the other end of the work opposite to one end of the work to be cut by the band saw blade is provided on a work table, and the work clamp device is used. Since the work is clamped, the work clamp device is swung up and down.

Thus, since the workpiece only moves up and down in the cutting direction, the cutting is performed without changing the cutting line of the band saw blade. Accordingly, the band saw blade itself is cut without being damaged and without being bent.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 1 and 2, a plurality of support posts are provided at appropriate intervals in the X-axis direction (left-right direction in FIG. 1) and the Y-axis direction (left-right direction in FIG. 2) of the vertical band sawing machine 1. 3 are erected. On both sides of the support post 3 in the Y-axis direction, brackets 7A and 7B rotatably supporting a plurality of rollers 5 as a work table are provided at appropriate intervals in the X-axis direction and the Y-axis direction.

Guide rails 9A, 9B extending in the X-axis direction are provided on the upper surfaces of the brackets 7A, 7B. Guide rail 9
Guide members 11A and 11B are placed on A and 9B, and the guide members 11A and 11B are moved in the X-axis direction while being guided by the guide rails 9A and 9B. The guide member 7A
In FIG. 2, a plurality of standing rollers 13 for positioning are rotatably supported on the right end at appropriate intervals in the X-axis direction.

Therefore, the workpiece W to be cut is placed on the roller 5, and the workpiece W is moved in the X-axis direction by positioning one end surface of the workpiece W by contacting the vertical roller 13.

Support posts 15 for the main body of the vertical band sawing machine 1 extend in the Y-axis direction on both sides of the rear side (the left side in FIG. 2) in the substantially central portion where the plurality of support posts 3 are erected in the X-axis direction. A plurality is provided at appropriate intervals. Support bases 17A and 17B are mounted on the support posts 15 provided on both sides, and guide rails 19A and 19B are provided on the support bases 17A and 17B.

A plurality of guide members 21 are engaged with the guide rails 19A and 19B so as to be guided, and the guide members 21 are integrally provided with, for example, a C-shaped cutting head 23.

With the above-described configuration, the cutting head 23 is moved in the Y-axis direction via the guide member 21 by being guided by the guide rails 19A and 19B by a driving device (not shown).

As shown in FIG. 2, the cutting head 23 is provided with a drive wheel 25 and driven wheels 27A and 27B, and a rotatable band saw blade 29 is mounted between the drive hole 25 and the driven wheels 27A and 27B. Has been turned. Also, driven wheels
A saw blade guide device 31A, 31B for guiding the band saw blade 29 between the cutting head 2A and the driven wheel 27B is provided.
3 is supported.

Although not shown in the illustration of the saw blade guide devices 31A and 31B, the tip of the band saw blade 29 is directed in the direction of relative movement between the workpiece W and the cutting head 23 by, for example, a cylinder. That is, in FIG. 2, a state in which the saw blade is oriented in the vertical direction (the saw blade tip is oriented in the Y-axis direction) and a direction in which it is twisted by 90 degrees with respect to the vertically oriented state (the saw blade tip is in the X-axis direction) The state is automatically switched to the state of pointing to

With the above configuration, after the work W is placed on the roller 5 and one end surface of the work W is brought into contact with the upright roller 13, the work W is fed and positioned in the X-axis direction rightward in FIG. . Next, after driving the drive wheel 25 to move the band saw blade 29 from, for example, top to bottom, the cutting head 23 is moved rightward in the Y-axis direction in FIG.
By moving the workpiece W to the position indicated by the dashed line, the workpiece W is cut.

In the lower part of the cutting head 23, a chip receiver 33 having a screw conveyor for discharging chips is provided.
The chip receiver 33 is moved in the Y-axis direction together with the movement of the cutting head 23. A chip conveyor 35 is provided beside the cutting 23 below the chip receiver 33, and a chip storage device 37 is provided behind the cutting head 23.

Therefore, the chips generated when the work W is cut by the band saw blade 29 are once received by the chip receiver 33, further dropped on the chip conveyor 35, and then stored in the chip storage device 37. become.

On the roller 5 on the left side in FIG. 1 with respect to the cutting head 23, the other end side opposite to the one end side for cutting the work W is clamped, and a work clamp device 39 which can swing up and down. Is provided. More specifically, as shown in FIG. 1, a box-shaped clamp body 41 is provided on the roller 5, and a workpiece W is provided on the front side (right side in FIG. 1) of the clamp body 41. A clamp body 45 provided with upper and lower clamp jaws 43U and 43D is pivotally supported by a pivot pin 47 so as to be vertically swingable.

In the front part of the clamp body 41, for example, two fluid pressure cylinders 49 are respectively incorporated on the left and right sides in FIG. 2, and the tip of a piston rod 51 attached to the fluid pressure cylinder 49 is connected to the clamp body 45. Installed at the rear of the.

With the above configuration, the other end of the workpiece W clamped by the upper and lower clamp jaws 43U and 43D is connected to the clamp body via the piston rod 51 when the hydraulic cylinder 49 is operated.
As indicated by the chain double-dashed line 45, the pivot 45 pivots on the pivot pin 47 as a fulcrum, so that it is lifted upward.

A fluid pressure cylinder 53 is provided in the clamp body 45, and a distal end of a piston rod 55 attached to the fluid pressure cylinder 53 is attached to the upper clamp jaw 43U.

With the above configuration, when the hydraulic cylinder 53 is operated,
Since the upper clamp jaw 43U is moved up and down via the piston rod 55, the other end of the work W is clamped by the upper and lower clamp jaws 43U and 43D regardless of the size of the work W.

When one end side of the work W is cut by the band saw blade 29, when the lower surface of the one end side of the work W is uneven, it is detected by the operator's naked eye or a detection device (not shown). , The hydraulic cylinder of the work clamp device 39
When the other end of the work W is swung up and down by operating the work 49, the cutting is performed without changing the cutting line of the band saw blade 29. Therefore, the cutting can be performed without causing any bending without damaging the band saw blade 29 itself.

For example as viewed from the cutting direction of the workpiece W, if there is uneven W _E as shown in FIG. 3 (A) to the lower surface of the right side in one end of the workpiece W, the left side of the hydraulic cylinder 49, one end of the workpiece W If there are irregularities W _E as shown in FIG. 3 (B) on the lower surface of the left side of the side, the right side of the fluid pressure cylinder 49
And if there is a third as shown in Figure (C) uneven W _E on the lower surface of the whole of one side of the workpiece W is actuated both fluid pressure cylinder 49, the other end of the workpiece W upward It can respond by swinging.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, in this embodiment, the vertical band saw machine 1 in which the cutting head 23 is moved in the Y-axis direction with respect to the positioned work W and the work W is cut by the band saw blade 29 is described as an example. Is fixed, the work W is moved in the Y-axis direction, and the work W is cut by the band saw blade 29.

Also, in the example described above, one clamp body 45 is provided on each of the left and right sides of the work clamp device 39 for clamping the other end of the work W and swinging the work W in the vertical direction.
One 45 may be provided so that it can be moved in the left-right direction as needed, or three or more can be provided.

[Effects of the Invention] As can be understood from the above description of the embodiment, according to the present invention, when the one end side of the work is cut by the band saw blade of the vertical band saw machine, the lower surface of the work is uneven. When the workpiece clamping device that clamps the other end of the work is swung up and down, the other end of the work only moves up and down with respect to the cutting direction. Cutting is performed without changing the line. Therefore, the band saw blade itself can be cut without being damaged and without causing bending.

[Brief description of the drawings]

FIG. 1 is a front view of a vertical band sawing machine according to an embodiment of the present invention, FIG. 2 is a left side view in FIG. 1, and FIG.
FIGS. 7A to 7C are explanatory diagrams illustrating the operation of the work clamping device when there is unevenness on the lower surface of the work. DESCRIPTION OF SYMBOLS 1 ... Vertical band saw machine, 5 ... Roller 23 ... Cutting head 29 ... Band saw blade 39 ... Work clamp device 41 ... Clamp body 43U, 43D ... Upper and lower clamp jaws 47 ... Pivot pin 49 ... Fluid pressure cylinder

Claims (1)

(57) [Claims] 1. A work table, on which a work is placed, and a cutting head which supports a vertically movable band saw blade for cutting the work and is arranged in a direction perpendicular to the work table. A vertical band saw machine for relatively moving a head and the work and cutting the work with the band saw blade, wherein the other end of the work opposite to one end of the work cut with the band saw blade. A vertical band sawing machine comprising a work clamp device which is capable of being clamped and swinging up and down, provided on the work table.