JPH0716833A - Cutting device - Google Patents

Abstract

PURPOSE:To obtain a cutting machine capable of easily and arbitrarily cutting a relatively hard planar member, such as a roof tile, having various changes in shape and thickness. CONSTITUTION:In a roof tile cutting device in which blades 9, 10 are each fixed to upper and lower blade containing parts 2, 3 disposed opposedly to each other, and a roof tile 22 inserted between the blades 9, 10 is cut by operating the upper and lower blades 9, 10 into/out of contact with each other, the upper and lower blades 9, 10 are each composed of a plurality of divided blades 11 having a tip of a wedge-form cross section. Each of the divided blades 11 is pressed at its base end toward its tip by a pressing means and can be fixed to the blade containing parts 2, 3 at its intermediate part by blade fixing means 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for cutting a relatively hard plate member such as a corrugated plate slate or roof tile.

[0002]

2. Description of the Related Art Generally, as a cutting device of this type, as described in, for example, Japanese Utility Model Publication No. 56-4969, one end portion of two board bodies having blade portions on opposite sides is provided. The two boards are pivotally connected by a connecting rod, and the two boards can be opened and closed. The blades of the two boards are provided so as to cross each other at the part closer to the connecting rod. A so-called "push-cut type" is known in which the gap between the cutting edges at the other end is maximized at the other ends of the two plates and continuously reduced toward the portion where the cutting edges intersect. There is.

It is also known that the push-down handle has a base end portion supported by a disk-shaped rotary blade that rotates at a high speed, and the material to be cut is cut by the rotary blade.

[0004]

By the way, in the cutting device described in Japanese Utility Model Publication No. 56-4969, one ends of the blades arranged above and below intersect, and the roof tiles to be cut are sequentially arranged from one end side thereof. Since the tiles are cut, the roof tiles easily slide on the upper surface of the blade during this cutting and easily escape or move to the other end side, which makes it difficult to make an accurate cut, which is troublesome. .

On the other hand, when cutting with a disk-shaped rotary blade, it is rare that the roof tile slides on the upper surface of the blade during the cutting as described above and escapes or shifts to the other end side, but chips and There were problems such as dust being scattered around and noise during cutting being loud. Moreover, as shown in FIG.
The blades 109 and 110 disposed above and below 01 are shaped to match the waveform of the roof tile 122, the lower blade 110 is fixed, and the upper blade 109 is lowered to cut the roof tile 122. It may be possible to prevent the lower blade 109 from slipping on the upper surface of the lower blade 109 and escaping to the other end side when the blade 122 is cut. There is a problem that they have to be prepared in pairs, and their production, management and storage are troublesome and not practical.

The present invention has been made in view of the above problems, and an object thereof is to provide a cutting machine capable of easily and easily cutting a relatively hard plate-like member such as a roof tile having various shapes and thicknesses. To do.

[0007]

In order to achieve the above object, a cutting device according to the present invention has a blade accommodating portion which is arranged in a vertically opposed state, wherein the blades are fixed and the upper and lower blades are In the roof tile cutting device that cuts the roof tiles inserted between the blades by operating in the contact and separation directions, each blade arranged above and below is formed by a plurality of blades, and each blade has a base end. It is characterized in that the portion is configured to be pressed and biased in the blade tip direction by the biasing means, and the intermediate portion of the divided blade can be fixed to the blade storage portion by the blade fixing means.

[0008]

First, the blade fixing means is loosened to bring the divided blades into the state of being pushed out in the blade tip direction by the biasing means. Next, when a material to be cut such as a slate or a roof tile is placed on the lower blade, the divided blade of that portion is pushed against the urging force of the urging means in the portion where the lower surface of the material to be cut is protruding downward. Therefore, the split blade forming the lower blade has a shape along the lower surface of the material to be cut. While maintaining this state, the divided blade forming the lower blade is fixed to the blade housing by the blade fixing means.

Then, when the upper blade is lowered or the lower blade is raised, the divided blade of the portion protruding above the material to be cut resists the urging force of the urging means and moves inside the blade accommodating portion. Since it is pushed inward, the split blade forming the upper blade has a shape along the upper surface of the material to be cut. While maintaining this state, the divided blade forming the lower blade is fixed to the blade fixing member by the blade fixing means.

After that, when the upper blade is lowered or the lower blade is raised, the material to be cut is cut, and notches are formed on the front surface and the back surface. When the notch is engraved in this way, it can be easily cut by tapping it with a mallet or giving an impact.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an example of a roof tile cutting device of the present invention, and reference numeral 1 generally indicates the cutting device. In this cutting device 1, an upper blade storage part 2 and a lower blade storage part 3 are vertically opposed to each other, and the upper blade storage part 2 is supported by a casing 4 so as to be capable of advancing and retracting. Both ends of the storage part 3 are connected to each other by connecting rods 5.

The upper blade accommodating portion 2 is moved back and forth by the casing 4
An operating rod 6 pivotally supported at one end of the operating rod 6, and an interlocking rod 8 that transmits the pushing down force to the upper blade accommodating portion 2 when the grip portion 7 of the operating rod 6 is pushed down. The upper blade storage portion 2 is provided with an upper blade 9, and the lower blade storage portion 3 is provided with a lower blade 10.

The upper blade 9 and the lower blade 10 are made of a hard metal material such as steel, and have a wedge-shaped cross section at the tip 11a, and the peripheral surface from the tip-end portion of the wedge shape to the base end portion 11b. The divided blade 1 is formed with a thread-shaped step 12 for fixing the blade.
As shown in FIG. 2, a plurality of blades 1 are arranged and housed in the blade housings 14 and 15 formed in the upper blade housing 2 and the lower blade housing 3, respectively.

Divided blade 11 constituting upper blade 9 and lower blade 10
The compression springs 16. 1 for pushing and urging the blades 9 and 10 in the blade tip direction between the base end portions 11 b and 11 b of 11 ... and the blade housing portions 14 and 15 which face each other.
6 ... is interposed. Further, blade fixing means 18 for specially fixing the divided blades 11, 11, ..., which are urged by a compression spring 16 and urged, is provided on each side surface portion of the upper blade storage portion 2 and the lower blade storage portion 3. , This blade fixing means 18
Is attached to the side surfaces of the upper blade storage portion 2 and the lower blade storage portion 3 so as to be adjustable in advance and retreat, by attaching a screw 21 that abuts and fixes the above-mentioned thread-shaped step 12 of the split blade 11. It is configured.

A case where the roof tile 22 is cut by the roof tile cutting apparatus 1 configured as described above will be described. First, the blade fixing means 1
All the screws 21 of 8 are loosened so that the divided blades 11 are pushed out by the compression springs 16 in the blade tip direction. Next, when the roof tile 11 is placed on the lower blade 10, the split blade 11 whose tip is in contact with the lower surface portion protruding below the roof tile 11 due to its own weight resists the pushing force of the compression spring 16. Since the lower blade 10 is pushed into the blade accommodating portion 15, the divided blades 11, 11, ...

While keeping this state, the screw 21 of the blade fixing means 18 is tightened, and the tip thereof is divided into blades 11, 11, ...
The divided blades 11, 11, ... Of the lower blade 10 are fixed by being pressed into contact with the thread-shaped step 12 formed in the above.

When the grip portion 7 is pushed down and the upper blade housing portion 2 is lowered via the interlocking rod 8, the divided blades 11, 11 ... Abutting against the portion of the roof tile 22 projecting upward.
Is pushed into the blade housing portion 14 against the pushing force of the compression spring 16, so that the divided blade 11 forming the upper blade 9
················· is along the unevenness of the upper surface of the roof tile 22.
While maintaining this state, the screw 18 is tightened, and the tip of the screw 18 is brought into pressure contact with the above-mentioned thread-shaped step 12 of the divided blades 11, 11 ... .

After that, when the upper blade housing 2 is further lowered to lower the upper blade 9, the roof tile 22 is cut between the upper blade 9 and the lower blade 10, and notches are formed on the front and back surfaces. It is carved. At this time, since the areas of the upper and lower blades 9 and 10 acting on the front and back surfaces of the roof tile 22 are extremely small, it is possible to easily engrave the notches even with a light force.

In this way, when the notches are carved on the front and back of the roof tile 22, since extremely fine cracks are radially formed around the notches, it is easy to tap them with a mallet or give them a light impact. It can be cut into a predetermined shape.

In the above embodiment, the operating rod 6 is used as a means for freely moving the upper blade accommodating portion 2 in the vertical direction.
In addition to this, it is of course possible to operate the upper blade storage unit 2 in the vertical direction by a pneumatic cylinder or a hydraulic cylinder. In addition to or instead of the upper blade storage unit 2, the lower blade storage unit is raised. Of course, you may make it do.

Further, in addition to the spring of the above embodiment, air pressure, hydraulic pressure or the like can be used as a means for pressing the dividing blades, and the positions of the dividing blades forming the upper and lower blades are staggered. It goes without saying that it may be provided in the. By the way, a plurality of divided blades forming the upper and lower blades are provided, but the interval between them may be appropriately changed because the ease of cutting depends on the shape of the roof tile to be cut, the thickness material, and the like.

[0022]

As described above, according to the present invention, each of the upper and lower blades is formed of a plurality of divided blades whose tips have a wedge-shaped cross section, and each of the divided blades has a base end portion. While pressing and biasing the blade in the direction of the blade by the biasing means, the intermediate portion of the divided blade can be fixed to the blade fixing member by the blade fixing means. There is an advantage that the roof tile can be easily cut freely and without scattering dust or generating noise.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a roof tile cutting device according to the present invention.

FIG. 2 is a vertical sectional view of a roof tile cutting apparatus according to the present invention.

FIG. 3 is a side view showing a conventional roof tile cutting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cutting machine 2.3 ... Blade storage part 9 ... Upper blade 10 ... Lower blade 11 ... Dividing blade 11b ... Proximal end 16 ... Biasing means 18 ...・ Blade fixing means 22 ... Roof tile

Claims (1)

[Claims] 1. A roof tile inserted between the blades is cut by fixing the blades in blade housing portions arranged vertically opposite each other and operating the upper and lower blades in the contact and separation directions. In the roof tile cutting device of the method, each blade arranged above and below is formed by a plurality of divided blades, and each of the divided blades presses and biases the base end portion in the blade tip direction by the biasing means, and the middle of the divided blades. A cutting device, characterized in that a portion can be fixed to a blade housing by a blade fixing means.