JPH02233201A - Circular sawing machine - Google Patents

Abstract

PURPOSE:To prevent the generation of vibration in the direction of the thickness of a sheet and to provide a sheet with high precision by a method wherein a work is cut into a plurality of pieces in a lump from a horizontal direction, and the cut pieces of the work right after cutting are supported by means of vertically arranged split sheets. CONSTITUTION:When a cylinder 32 is contracted for operation, a push plate 31 is moved leftward, resulting in forced carriage of a work W at a lowermost stage placed on the upper surface of a table 15a toward a feed roll 27. The work W is conveyed toward circular sawing machines 18 and 19 on the left at a specified speed in a state to be clamped from a vertical direction between feed rolls 27. Five horizontal split grooves are formed from both sides by means of the circular sawing machines 18 and 19, and as a result, the work W forms vertically split six cut pieces Wa. Each cut piece is inserted in an engaged state between the sheet pieces of a split sheet 20 on the left of the circular sawing machines 18 and 19, i.e., on the discharge side. The cut pieces are conveyed toward left delivery rolls 28 in a state to hold a vertical distance therebetween at a specified value, and conveyed leftwardly in a state to be clamped from lateral directions by means of the delivery rolls 28.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention involves cutting a long workpiece (wood) vertically into a large number of pieces at once using a large number of circular saws (gang saws) arranged in the axial direction. This relates to a circular saw machine.

(Prior Art) As a conventional art, there is a structure shown in FIGS. 4 and 5.

That is, a rotating shaft 2 rotated by a motor is disposed above the machine base 1 in a lateral (horizontal) direction, and a plurality of circular saws 3 (gang saws) are coaxially fitted and fixed to this rotating shaft 2. As shown in FIG. 5, this circular saw 3 is fixed to the rotating shaft 2 with a space collar 4 maintaining a predetermined distance in the axial direction.

A work transfer device 5 is attached below the rotating shaft 2.

This work transfer device 5 has an endless feed chain 8 connected to sprockets 6 and 7 attached to the left and right ends of the machine base 1.
The upper moving part 8a of the feed chain 8 is placed along the upper surface of a guide rail 9 arranged horizontally in the left and right directions, and the feed chain 8 is rotated counterclockwise via the sprocket 6 by a motor ]-0.

Further, presser rolls 11 and 12 are arranged on both the left and right sides of the rotating shaft 2. These presser rolls 11 and 12 are connected to the feed chain 8
The workpiece W being transferred is pressed downward by the upper moving part 8a.

Then, the long workpiece W placed on the machine stand 1 is transferred to the left by the workpiece transfer device 5, and the pusher rolls 11 and 1
There is a structure in which a circular saw 3 is used to cut a plurality of pieces at once in the longitudinal direction while pressing downward with a circular saw 3.

(Problems to be Solved by the Invention) In the above-mentioned conventional method, a circular saw 3 is attached to a rotating shaft 2 arranged horizontally, and the circular saw 3 forms vertical grooves to cut the workpiece W in the longitudinal direction. As a result, especially when obtaining a thin plate, the cut piece of the workpiece W vibrates or falls in the thickness direction with respect to the circular saw 3 during cutting, making it impossible to cut with high precision. Ta.

Furthermore, since the workpiece W is cut by a circular saw 3 attached to a single rotary shaft 2, the depth of cut is limited and a wide plate cannot be obtained.

The object of the present invention is to obtain a novel circular saw machine that eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the present invention is configured as follows.

That is, a pair of rotating shafts extending in the vertical direction are supported in parallel on the machine base on both sides of the workpiece feed axis of the machine base and are displaced in the direction of the workpiece feed axis. The circular saws are fitted and fixed at a predetermined interval in the vertical direction, and a plurality of split plates are arranged vertically at approximately equal intervals with each circular saw, and these split plates are connected to the workpiece discharge side of each circular saw. The structure is such that it is fixed to the machine base so that it faces the machine.

(Function) Since the present invention has the above-described configuration, the workpiece is vertically cut by forming horizontal grooves from both sides by a circular saw attached to each rotating shaft.

Further, during cutting, the cut pieces of the workpiece pass through the discharge side of the circular saw while being supported by the split plate.

(Example) Embodiments of the present invention will be described below based on the drawings.

In the drawings, FIG. 1 is a plan view showing an embodiment of the present invention;
FIG. 2 is a side view thereof, and FIG. 3 is a sectional view taken along line mm in FIG. 1.

In FIGS. 1 and 2, 15 is a machine base, and a pair of rotation shafts 16 and 17 are attached to the middle part of the machine base 15 in the left-right direction.

These rotating shafts 16 and 17 are vertically erected, and are spaced apart from each other in the vertical (horizontal) direction of the machine base 15 in FIG. and install it in parallel on the machine stand 15.

The upper ends of each of the rotating shafts 16 and 17 are made to protrude upward from the table 15a of the machine base 15, and a plurality of pairs of circular saws 18 and 19 (gang saws) facing each other are mounted on these parts at predetermined intervals in the vertical direction. Hold, fit and fix.

Further, a plurality of split plates 20 and 21 arranged in the vertical direction at substantially equal intervals with each of the circular saws 8 and 19 are arranged directly to the left of each of the circular saws 18 and -9, that is, on the workpiece discharge side.

The mounting structure of each of the rotating shafts 16 and 17 and each of the circular saws 18 and 19 and the positional relationship between these and each of the split plates 20 and 21 are substantially the same.
The mounting structure of the circular saw 6 and the circular saw 18 and the position of the split plate 2o are as shown in FIG.

That is, a sleeve 22 is fitted onto the rotating shaft 16, a space collar 23 is interposed on the outer periphery of the sleeve 22, and, for example, five circular saws 18a to 18e are fitted, and a nut 24 is fitted onto the upper shaft end of the rotating shaft 16. The circular saws 188 to 18e are screwed together and tightened to integrally fix the circular saws 188 to 18e to the rotating shaft 16, thereby making the interval L between the circular saws 18a to 18e correspond to the thickness of the workpiece W to be cut. .

Further, the split plate 20 is made of plate pieces 20a to 20e having the same thickness or slightly thinner as each of the circular saws 18a to 18e.
18e and arranged close to each other at approximately equal intervals,
As shown in FIG. 1, its approach side edge is formed into an arc shape in plan view along the outer periphery of the circular saw 18.

The rotating shafts 16 and 17 are connected by belts to motors 25 and 26 attached to both sides of the machine base 15.

Further, a supply roll 27 and a feed roll 28, which are rotated by a motor (not shown), are attached to the machine stand 15, located to the right and left of each of the circular saws 18 and 19.

The supply rolls 27 are attached to the machine base 15 by horizontally extending three sets of vertically opposing rolls, with the lower supply roll 27b facing the top surface of the table 15a, and the upper roll 27a facing the table 15a. It is arranged above the handle 29 so that it can be moved up and down by a handle 29, and the work W transferred from the right is pinched from above and below and fed to the left.

Further, the feed roll 28 is made up of two sets of rolls arranged opposite to each other in the horizontal direction and attached to a rotating shaft in the vertical direction. It is designed to be moved to the left.

3o is a carry-in device for carrying the workpiece W into the supply roll 27, in which a push plate 31 is attached to the right side of the table 15a so as to be slidable in the left-right direction, and a rod 32a of a cylinder 32 attached to the lower right side of the table 15a is attached. The push plate 31 is connected, thereby causing the cylinder 32 to shorten and press and transfer the works W loaded on the top surface of the table 15a one by one toward the supply roll 27 on the left.

Note that 33 is a workpiece W loaded on the top surface of the table 15a.
a guide for guiding the table to the horizontal center of the table 15a, 3
4 is a dust collection case.

Next, the operation mode of the above embodiment will be explained.

When the cylinder 32 is shortened, the push plate 31 moves to the left, whereby the lowermost workpiece W loaded on two sides of the table 15a is pressed and transferred toward the supply roll 27.

The workpiece W that has arrived at the supply roll 27 section is held between the upper and lower directions by the supply roll 27 and is transferred at a predetermined speed towards the circular saws 18 and 19 on the left side. As a result, five horizontal grooves are formed vertically from the rain side, and as a result, the work W
Six cut pieces Wa divided into upper and lower parts are formed.

Then, each of the cut pieces Wa is fitted between each of the plate pieces 20a to 20e of the split plate 20 on the left side, that is, on the discharge side of the circular saws 18 and 19, and the vertical interval is maintained at a predetermined value in this part. At the same time, it is transferred toward the left delivery roll 28, and is laterally gripped by this delivery roll 28 and transferred to the left.

Therefore, each cut piece Wa does not vibrate in the vertical direction during cutting.

In addition, the above-mentioned split plate 20 is a vertical shaft erected on the machine base 15 by arranging circular plates of approximately the same thickness as the circular saws 18 and 19 at approximately equal intervals in the vertical direction. It may also be supported rotatably.

(Effects of the Invention) As is clear from the above description, the present invention cuts a workpiece into a plurality of pieces at once in the horizontal direction, and supports the cut pieces of the workpiece immediately after cutting with split plates arranged in the vertical direction. As a result, even if the workpiece is cut into thin pieces, the cut pieces do not vibrate in the vertical direction, that is, in the thickness direction, during cutting, and a thin plate with high precision can be obtained.

Further, since the workpiece is cut from both sides by circular saws arranged to face each other in the lateral (horizontal) direction, it is possible to obtain a wide plate without increasing the diameter of the circular saw.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view of FIG. 1, and FIG. 4 is a schematic side view showing a conventional example. FIG. 5 is an enlarged sectional view of the circular saw portion. 15: Machine stand, 15a: Table, 16/17: Rotating shaft,
18/19: Circular saw, 20: Split plate, 22: Sleeve, 2
3: Space collar, 24: Nut, 25/26: Motor, 27: Supply roll, 28: Feeding roll, 29:
Handle, 30: Carrying device, 31: Push plate, 32: Cylinder, 32a: Rondo, 33: Guide, W: Workpiece, Wa: Cut piece. Application agent Hisashi Matsumoto

Claims (1)

[Claims] 1. A pair of rotating shafts extending in the vertical direction are supported in parallel on the machine base on both sides of the workpiece feed axis of the machine base and displaced in the direction of the workpiece feed axis, and a plurality of pairs of rotating shafts facing each other are supported on each rotary shaft. The circular saws are fitted and fixed at a predetermined interval in the vertical direction, and a plurality of split plates are arranged vertically at approximately equal intervals with each circular saw, and these split plates are connected to the workpiece discharge side of each circular saw. A circular saw machine characterized by being fixed to the machine base so as to face the machine.