JPH05104520A - Device for correcting movement of frame having blade to saw ore block - Google Patents

Abstract

PURPOSE: To compensate a swing-type saw tooth-supporting frame so that a part of circular arc formed by the frame is compensated to become a straight line. CONSTITUTION: An eccentric pin 4 is used to connect a support body 6 supporting a saw tooth support frame 7 to a swing arm 5 so that the support body 6 is always apart from the arm by a spring 9. When a block to be cut touches the saw tooth, force from the block rotates the eccentric pin, which shorten the distance between the arm and the frame 7 so that the locus of the frame becomes nearly straight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compensating device, and more particularly to a device for compensating the motion of a blade support frame of a sawing device used for sawing mineral blocks such as marble, graphite and hard stone. It is related to.

[0002]

2. Description of the Related Art A frame for supporting a saw blade is pivotally attached to two swinging arms to form parallelogram links, and swinging the arms causes the saw blade to draw an arc-shaped trajectory. It is known to perform drawing, but since the movement of the saw blade is arcuate, the contact with the block is extremely short and the sawing efficiency is poor.

[0003]

A frame has been proposed having a blade that moves horizontally because the blade can remain in continuous contact with the block. However,
In order to provide such a mechanism for imparting a horizontal reciprocating motion to the frame, it is necessary to use an advanced technique, and in this case, the force required for cutting is considerably larger than before.

Therefore, it is desired to improve the contact state between the blade and the block without taking a complicated structure.

[0005]

According to the present invention, an eccentric pin is provided in the means for connecting the support for supporting the blade supporting frame and the swing arm, whereby the saw blade is moved by swinging the arm. When the blade comes into contact with the block, it allows the blade support frame to move closer to the arm due to the drag force received from the block, which causes the movement of the saw blade to approach a straight line while in contact with the block. Thus, the above-mentioned problems were solved.

[0006]

As a result of adopting the above-mentioned structure, in the present invention, the contact time between the saw blade and the block can be remarkably lengthened and the efficiency of sawing can be improved by a simple mechanism including an eccentric pin.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a black line with double-headed arrows oscillates but is compensated by the device of the invention.
FIG. 3 is a diagram showing a path in which a saw blade provided on the moving body moves. For convenience of explanation, the saw blade is not shown, but the blade support frame 7 performing the same movement is shown.

FIG. 1 shows that two arcuate passages 2, 3 are arranged on each side of a straight central part 1 to form an arc. This line shows the locus of one point adjacent to the left end on the frame 7. All points on the frame move in the same way as shown by this arrow. The two arcuate passages 2 and 3 form a passage portion in which the blade moves toward and away from the block being sawed. This is due to the presence of the eccentric pin 4 which is arranged between the swinging arm 5 and the support 6 of the frame which supports the blade shown by 7. The frame is shown diagrammatically in FIG.

A spring 9 is also connected to the eccentric pin 4, which is provided with laterally extending support pin portions 4 ', 4 ",
This spring is in the form of a helical spring and elastically holds the eccentric pin in its rest position. This rest position is the position taken when the blade is not in contact with the sawed block.
The opposite of the position shown in. That is, the rest position is a position where the blade support frame 7 is moved farthest from the arm 5.

In FIG. 3, the blade support frame 7 is shown in a position spaced upwards from the block 8, while the eccentric pin 4 is turned completely downward so that its two eccentric axes are arranged vertically. ing. In FIG. 4, the frame 7 is just before coming into contact with the block 8 while the eccentric pin 4 is still eccentric in the vertical direction.

In FIG. 5, the eccentric pin 4 is approximately 9 in the direction of arrow F.
The stage after already rotating through 0 ° is shown, which ensures a curved path at the end of the oscillating arm 5 for the blade support frame in at least the central part of the pendulum movement of the arm 5. So that it can be corrected. The action of rotating the eccentric pin 4 against the force of the spring 9 in this manner is caused by the blade coming into contact with the block 8 and receiving an upward force.

In FIG. 6, the arm 5 is arranged in a completely vertical position in the central part of the working channel.

FIG. 7 shows a stage in which the arm 5 swings from the vertical state to the opposite side.

During this process, the eccentric pin 4 rotates in the opposite direction (ie in the direction of arrow F '), which allows the blade support frame 7 to maintain a constant height with respect to the block being cut.

FIG. 8 shows that the blade support frame then separates from the block at the end of the stroke.

FIG. 2 shows a torsion spring 9 which, when twisted, exerts a force in the opposite direction to constantly apply a biasing force to the eccentric pin 4 toward the rest position. The torsional force of this spring is chosen to keep the pressure of the blade on the block constant and thus to avoid any further undesired movement of the blade itself.

Although only one arm 5 is shown in FIGS. 4 to 8, a similar one is also connected to the opposite end of the blade support frame 7 so that the arms and the frame 7 have a parallelogram shape. Forming the links and thus the frame 7 always moves in parallel during the rocking of the arms.

[Brief description of drawings]

FIG. 1 is a diagram showing a trajectory of a blade support frame in a sawing device provided with a correction device according to the present invention.

FIG. 2 is a sectional view for explaining the correction device of the present invention.

FIG. 3 is a front view of a sawing device for explaining the operation of the correction device of the present invention.

FIG. 4 is an explanatory view showing a state at the next moment of FIG.

FIG. 5 is an explanatory diagram showing a state at the next moment of FIG.

FIG. 6 is an explanatory diagram showing a state at the next moment of FIG.

FIG. 7 is an explanatory diagram showing a state at the next moment of FIG.

FIG. 8 is an explanatory diagram showing a state at the next moment of FIG.

[Explanation of symbols]

 4 Eccentric Pin 5 Swing Arm 6 Support 7 Blade Support Frame 8 Block 9 Elastic Biasing Means

Claims (2)

[Claims] 1. A blade that swings and saws a mineral block, a swing arm 5, a blade support frame 7, a support 6 that supports the blade support frame, and a coupling that connects the support to the swing arm. A device for compensating frame movement in a sawing device having means, said coupling means comprising an eccentric pin 4 positioned between a rocking arm 5 and a support body 6 for blades to a block 8 to be sawn. A correction device characterized in that by holding the central part of the track straight, the contact between the blade and the block is lengthened, the grinding action is increased, and the sawing capability of the blade is increased. 2. The swing arm 5 to the support 6 are further provided.
2. The compensating device of claim 1 including elastic biasing means 9 for rotationally biasing the eccentric pin 4 in a direction away from the blade to thereby maintain a constant pressure during contact between the blade and the block to increase the sawing ability of the blade.