JPS6018900Y2 - Processing machines for concrete blocks, etc. - Google Patents

Description

[Detailed description of the invention] This invention uses the cutting or grinding resistance force generated by the rotating processing tool to hold and feed the workpiece when performing processing such as cutting or grinding on one side of a stone or concrete block using a rotating processing tool. It relates to ideas devised to be used effectively.

It is conventionally known to have a configuration in which a workpiece is placed on a forcibly driven conveyance means and machined with an upper surface machining tool during conveyance, and the cutting resistance force at that time is received by a guide plate or guide roller. The drawback was that chatter and slip were likely to occur.

The present invention solves the conventional drawbacks as described above by making the forcibly driven conveying means also serve as a means for receiving cutting resistance force. .

As shown in Figures 1A and 1-B, while the workpiece A is being fed in the direction of the arrow a from right to left in the figure, it has a rotating axis perpendicular to the workpiece surface, and the outer peripheral edge When the processing tool B, which is a face milling cutter with a cutting tool formed thereon or a surface grinding wheel with a ring-shaped grindstone formed on the outer periphery, rotates in the direction of the arrow to perform surface processing, the first-B As shown in the figure, the arcuate ridge line where the processing tool B and the unprocessed part of the workpiece A touch when viewed from the plane is covered in the direction shown by the arrow C, which is perpendicular to the direction of movement of the workpiece A. Workpiece A will receive resistance from processing tool B.

Considering the resistance force in the direction of arrow C, the arcuate ridgeline approaches a straight line as the diameter of the processing tool B as shown in the figure becomes larger than the width of the workpiece A, so After decomposing the resistance force at each point into two component forces, one in the direction of movement of workpiece A and the other in the direction perpendicular to this,
As can be seen by adding up the component forces in the same direction, the larger the diameter of tool B, the greater the force in the direction of arrow C. The couple force that tries to rotate in the direction becomes small.

Therefore, in the present invention, a processing tool B having a diameter larger than the width of the workpiece A is arranged, and an arc-shaped ridgeline where the processing tool B and the unprocessed part of the workpiece A touch when viewed from the plane can be formed. The cutting and grinding resistance in the direction perpendicular to the advancing direction of the workpiece A is increased by bringing the cutting surface closer to the straight line.

As shown in FIGS. 2 and 3, the device of the present invention first fixes the receiving metal fitting 1 on the side that receives this resistance, and then makes the forced drive so that it can slide freely on the receiving metal fitting 1. Belt 2 is arranged.

8 is a drive device for the belt. As will be mentioned later, a frictional force is induced between the workpiece A and the forced drive belt 2, so that when the forced drive belt 2 runs, the workpiece A is held and fed. .

On the side opposite to the side receiving the above resistance, there is a workpiece A.
A belt 5 that presses the forcibly driven belt 2 is disposed.

In this example, the pressure from the roller 4 is received from the back surface of the belt 5 by the action of the spring device 3.

Of course, instead of using the belt 5, the roller 4 may be used to apply pressure directly.

It is not necessary to forcibly drive either the roller 4 or the belt 5, as long as they can rotate freely and lightly as shown in the figure.

Finally, another belt 7 or roller for receiving the workpiece A is disposed on the side opposite to the side on which the processing tool B is disposed.

In this case too, forced driving is not necessary.

This belt 7 is slidable on the fixture 6.

FIGS. 4 and 5 show examples of two types of receiving fittings 1.

The receiving fitting 1 shown in FIG. 4 has a groove 1b formed in the center of a plate-like body 1a for guiding the belt 2, and the receiving fitting 1 shown in FIG.
A rotatable roller 1d is connected to c, and this roller 1
It is designed to be received by the belt 2 at point d.

In the device of the present invention, once the workpiece A placed on the belt 7 is pushed between the two belts 2 and 5, the belt is then pressed from the back through the roller 4 by the action of the spring device 3. 5, the workpiece A is pressed against the surface of the forcibly driven belt 2 and starts to move following the belt 2.

Then, when processing by processing tool B starts, the resistance force due to the processing described above is further added, so the frictional force between workpiece A and forced drive belt 2 is increased in order to prevent slippage between the two. This is a sufficient value.

In this way, the workpiece A moves at the same speed as the forced drive belt 2, during which time the workpiece A finishes being processed by the processing tool B, and exits from the rear end.

As described above, according to the present device, a rotatable processing tool B having a rotation axis perpendicular to the processing surface is disposed on the processing surface side of the workpiece A, and the processing tool B Since the receiving metal fitting 1 is fixed to the side that receives the cutting and grinding resistance, and the forced drive belt 2 is provided to be able to slide freely on the receiving metal fitting 1, even if cutting and grinding is attempted with processing tool B while water is being poured, the workpiece A and,
The forced drive belt 2, which is firmly supported by the bracket 1, is crimped with sufficient pressing force due to cutting and grinding resistance.
Coupled with the friction resistance of the belt 2 itself, the belt 2 can be smoothly transferred without slipping, and a clean finished surface without chattering can be obtained.

Further, a slidable belt 5 or a roller for pressing the workpiece A against the forced drive belt 2 is provided on the side opposite to the side receiving the resistance, and the workpiece A is supported on the side facing the processing tool B. Since other slidable belts 7 or rollers are provided, the workpiece A is supported on three sides by the slidable belts 2, 5, and 7, respectively.
It goes without saying that the workpiece can be machined one by one, or it can be fed successively in close contact with the front and back, or if necessary, it can be fed at appropriate intervals.

Furthermore, compared to a pusher device, it occupies a much smaller area, and there is no need to replace the claw metal fittings or the like.

In addition, even though water is used during processing, there is no problem unlike chains, etc., and the structure is simple and there are fewer failures.

[Brief explanation of drawings]

1-A and 1-B are diagrams showing the resistance force exerted on the workpiece by the rotating processing tool. FIGS. 2 and 3 are a plan view and a side view of the present device, and FIGS. 4 and 5 are perspective views showing an example of the receiving fitting. A... Workpiece, B... Processing tool, 1.
...Bracket, 5/msmma belt, 7...
··belt.

Claims (1)

[Scope of utility model registration request] The machine has a rotation axis perpendicular to the machined surface on the machined surface side of the workpiece A, and has a diameter larger than the width of the workpiece A,
A processing tool B with a cutting tool or a grinding wheel formed on the outer periphery is installed, and the cutting/grinding resistance generated on the arc-shaped ridgeline where the processing tool B and the unprocessed part of the workpiece A are in contact with each other is processed. Thing A
A receiving metal fitting 1 is fixed on the side that receives the component in the direction perpendicular to the direction of movement, and a forced drive belt 2 that is slidable on the receiving metal fitting 1 is provided, and is opposite to the side that receives the above-mentioned resistance. A slidable belt 5 or a roller for pressing the workpiece A against the forced drive belt 2 is provided on the side facing the processing tool B, and another slidable belt 7 supporting the workpiece A is provided on the side facing the processing tool B.
Or a machine for processing concrete blocks, etc. equipped with rollers.