JPH0320084Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cutting device for a band-shaped clay substrate for ceramic products such as clay roof tiles, which accurately cuts the cutting dimensions and cleanly cuts the cut surface.

Conventionally, various devices have been known for cutting this band-shaped clay substrate, but one of the simplest structures is the automatic one shown in Figures 1 and 2 described in Japanese Utility Model Publication No. 57-51870. There is a cutting machine.

To explain what is shown in FIGS. 1 and 2, there is a fixed frame 1, a movable frame 3 movably mounted on its rail 2, and a movable frame 3 mounted on the movable frame 3. A material entry conveyor 4, a material delivery conveyor 5 provided on the moving frame 3 so as to be connected to the entry conveyor 4, a rotary cutting blade 6 disposed at the entrance of the delivery conveyor 5, A stopper 7 is disposed in the middle of the delivery conveyor 5 so that it can rise and fall, and when the tip of the material hits the stopper 7 in an upright state, it rotates on a moving frame 3 that moves forward by being pushed by the advancing force. Rotate the type cutting blade 6,
an automatic control device A for driving the delivery conveyor 5 after lowering the stopper 7 after completion of cutting;
A frame return means 8 for rapidly returning the movable frame 3 to its original position when the material passes over the fallen stopper 7, and a return means (not shown) for returning the stopper 7 to its original upright state. This is an automatic cutting machine for soil materials, which is a push-hand type rotary cutting machine, and the rotary cutting blade 6 has a positive (plus) angle in the direction of rotation with respect to the rotation axis. It is attached to the machine and is designed to cut the substrate in a so-called pushing manner. Therefore, the cutting blade 6 may bend during cutting due to the degree of hardness of the material to be cut, uneven particle size distribution, inclusion of foreign substances such as pebbles, etc.
Occasionally, the cutter would get stuck in the cutter, making it impossible to accurately cut it in a straight line to the desired size. To prevent this,
An attempt was made to provide a guide member to support the tip of the cutting blade 6, but a sufficient effect could not be obtained.

In addition, the cutting blade 6 may deviate laterally and bite in, causing the cutting blade 6 to bend or meander even if it does not break. To prevent this, the thickness of the cutting blade 6 must be made sufficiently thick, and the cutting surface When an excessive resistance load is applied to the paper, the shape of the end part is forced to expand, which has the disadvantage of causing the paper to become dented or curled up.

Therefore, in addition to providing a guide to prevent the cutting blade 6 from bending or meandering, each member to which the cutting blade 6 is attached had to have a considerable strength and have a sturdy structure.

In addition, wire-type cutting machines (not shown), such as piano wire, have been widely used in the past;
Wires frequently break due to fatigue and abrasion, and a large amount of time is lost due to wire replacement work.

Furthermore, since the wire was used for cutting, when pebbles or the like fell into the base material, they got caught in the wire and left scratches on the cut surface, which affected the appearance of the product.

What is shown in FIG. 6 is a schematic cross-sectional view of a state of cutting by a conventional general cutting mechanism, in which a cutting blade 52 is attached on the same axis as a cutting blade holder 50, and a cutting blade 52 is installed on the same axis as a cutting blade holder 50. sometimes cutting blade 5
2 shows a state where the frictional resistance of the substrate m is increased and vegetables are shredded (pushed) as if using a vegetable knife.

The purpose of this invention is to solve these problems and to cut a strip of clay material with a clean cut surface without creating a sturdy structure and without meandering the cutting blade.

The basic structure of this invention is that the cutting mechanism for cutting the band-shaped clay base is made up of a relatively elongated plate-shaped cutting blade attached to a cutting blade holder at a constant angle α in the direction opposite to the direction of rotation. be.

An embodiment of this invention will be described below with reference to the drawings.

In this embodiment, as shown in FIGS. 3 and 4, the cutting device 10 is connected to an upper beam 1 of a fixed frame 11.
Rollers 13, 13 are rotatably attached to two locations on both sides of the
A geared motor 17 is installed horizontally in the longitudinal direction on a bracket 16 hanging down from one end of a moving frame 15 with wheels 14, 14 provided on the lower surface.
A cutting blade holder 19 is attached to the rotating shaft 18 of the cutting blade holder 17, and a relatively elongated plate-shaped cutting blade 20 is attached to the tip of the cutting blade holder 19 at a certain angle α in a direction opposite to the rotational direction of the cutting blade holder. so that it passes through the oil 23 of the oil tank 22 provided on the middle beam 21 of the fixed frame 11 during rotation,
A yoke 27 at the tip of a rod 26 of an air cylinder 25 for moving the movable frame installed horizontally on the fixed frame 11 is pivoted to the lower end of a bracket 24 suspended from another part of the movable frame 15. and moving frame 1
Receiving conveyor 2 for the belt-shaped clay base M on the upper surface of 5
8 and a delivery conveyor 29 for the cut clay substrate M' are connected, and these rollers 30 and
An endless chain 32 is hung on the frame 31, and the middle beam 2
A chain 36 is hung between the driving chain wheel 34 of the motor 33 provided on the receiving conveyor 28 and the chain wheel 35 concentrically attached to one of the rollers 31.
A substrate receiving plate 38 is mounted on the fixed frame 11 via a stand just in front of the passing surface 37 of the cutting blade 20 on the front side.

On the other hand, columns 40 and 4 are provided on both sides of the moving frame 15.
0 is fixedly installed, and a stopper is installed between these supports 40, 40.
A shaft 41 is rotatably supported, and this stopper shaft 4
A stopper 42 is fixed to the center of the support 40, and the stopper 42 is plate-shaped and attached to one of the supports 40.
An air cylinder 43 provided on one side of the pillar 40
is connected to the tip of an arm 45 attached to the protruding end 44 of the stopper shaft 41. 46 in the figure is a cam,
L ₁ , L ₂ and L ₃ indicate limit switches attached to each part.

Next, the operation of the present invention will be explained based on the drawings of the embodiment. As shown in FIGS. When the paper is continuously pushed in the P direction at a speed V and begins to be fed on the receiving conveyor 28 provided on the moving frame 15, immediately before this, the paper is attached to the support 40 on the side of the moving frame 15. The stopper is activated by the operation of the air cylinder 43.
42 is rotated and lowered on the roller 30 so as to block the advancement of the clay strip M. When the tip of the clay strip M comes into contact with the stopper 42, the movable frame 15 Together with the substrate M, it starts moving in the P direction at a pushing speed V. stopper here
Since the mounting position of 42 is adjusted in advance to a predetermined cutting length l, the stopper 42 comes into contact with the tip of the strip-shaped clay base material M, actuating the limit switch _L1 , and in response to the command, the stopper 42 is moved to the moving frame 15. A geared motor 17 attached in a hanging manner is activated, and a cutting blade holder 19 is rotated in the direction of arrow R to cut the band-shaped clay material M at a predetermined cutting length l. A relatively long plate-shaped cutting blade 20 is attached to the tip of the cutting blade holder 19 at a constant angle α in the direction opposite to the direction of rotation thereof, so that the cutting blade 20 maintains a constant angle α as described above. As it is, it is rotated with respect to the band-shaped clay base M while facing in the direction of symbol R in the drawing (see FIGS. 3 and 5).

To further explain this mechanism with reference to FIGS. 5 and 6, the cutting blade 20 "cuts" the band-shaped clay material while always maintaining a constant angle α in the opposite direction to its rotating direction. play an action.
Even after the cutting is completed, the cutting blade 20 continues to rotate, passes through the oil 23 in the oil tank 22, and then stops at a standby position before cutting.

As mentioned above, the cutting blade holder 19 and the cutting blade 20
During one rotation, the rotating shaft 1 of the geared motor 17
The cam 46 attached to 8 is the limit switch.
Activate L ₂ to send a command, and air cylinder 43
The stopper 42 is rotated in the opposite direction to the above and opened upward, and at the same time the moving air cylinder 25 of the movable frame 15 is operated to move the movable frame 15 via the rod 26 and the bracket 24. Return in the direction of arrow Q. At this time, the cut clay material M' is moved on the receiving conveyor 28 at a speed equal to the sum of the pushing speed V of the band-shaped clay material M in the direction of arrow P and the return speed V' of the moving frame 15 in the direction of arrow Q. P
Immediately after moving in the direction, the tip of the motor 33
The sample is transferred onto a delivery conveyor 29 driven by a conveyor 29 and sent to the next process. and cut clay base
When M' passes over the receiving conveyor 28, a limit switch (not shown) causes the air cylinder 4 to
3 to lower the stopper 42 in preparation for the next cutting operation. On the other hand, the cutting blade 20, which continued to rotate even after cutting, is stopped at a predetermined position when the cam 46 stops the rotation of the geared motor ₁₇ by the limit switch L3.

Since the cutting blade 20 is fixed to the cutting blade holder 19 at a constant angle α, the cutting blade 20 can be pulled freely to cut, so that it does not bend during cutting and the cut surface is cut cleanly.

Also, the cutting blade 20 is rotated by the oil tank 22 every rotation.
Since the cutting blade 20 passes through the oil 23, both sides of the cutting blade 20 are always wet with oil, and the cut end is smooth and free of rips.

Since this invention is constructed as described above, it has the following advantages.

Since the elongated plate-shaped cutting blade is attached to the cutting blade holder at a certain angle α in the opposite direction to its rotating direction, when cutting the band-shaped clay base material, by rotating the cutting blade holder to the right, the cutting can be easily performed. When cutting, the blade always maintains a constant angle, that is, the direction opposite to the direction of rotation, and cuts through the clay strip. Therefore, it not only has the advantage of being significantly improved in terms of durability and strength compared to a cutting blade made of piano wire, but also has the advantage of being able to "cut" a strip of clay material as if it were a long sword. Compared to the conventional method of "pushing" which has a large frictional resistance, the rotational stress exerted by the cutting blade on the cutting surface has an adverse effect, for example, because the frictional resistance between the cutting edge and the clay base is reduced. There is no sideways or meandering, and the cut surface is beautifully finished.

Therefore, the cut surface can be cut smoothly and accurately in a straight line.

[Brief explanation of drawings]

FIG. 1 is a side view of the embodiment of the prior art, FIG. 2 is a front view of the same, and FIG. 3 is a side view of the embodiment of the present invention.
FIG. 4 is a front view of the same, FIG. 5 is an enlarged sectional view of the band-shaped clay base of the present invention when cut, and FIG. 6 is an enlarged sectional view of the conventional band-shaped clay base when cut. Explanation of symbols of main parts, 10... Cutting device, 1
1...Fixed frame, 13...Roller, 14...
Rail, 15... Moving frame, 17... Geared motor, 18... Rotating shaft, 19... Cutting blade holder, 20... Cutting blade, 25... Air cylinder (for moving frame) , 28... Acceptance conveyor, 29
...Delivery conveyor, 33...Motor, 40...
Post, 41...stopper shaft, 42...stopper, 43...air cylinder (for stopper), 4
6...Cam, M...Striped clay base, M'...Clay base after cutting, _L1 , _L2 , _L3 ...Limit switch, α...Negative installation angle.

Claims (1)

[Claims for Utility Model Registration] A rotary cutter attached to a part of a movable frame equipped with a drive source for returning to the original position on a rail laid in the same direction as the extrusion direction of the band-shaped clay base material. In a cutting device that cuts a substrate with a member, a cutting blade holder is fixed to a rotating shaft that is supported by a part of the movable frame and rotates intermittently, and the cutting blade holder is rotated at a constant rate in a direction opposite to the direction of rotation. A device for cutting a band-shaped clay substrate, characterized in that a relatively elongated plate-shaped cutting blade is attached at an angle α.