JPS63221995A - Method of cutting semi-plastic cake - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to a method for cutting a semi-plastic cake, and in particular, a method for cutting a semi-plastic cake, such as lightweight cellular concrete (hereinafter referred to as "8LCJ"), etc., while reciprocating vibration motion of a piano wire. This invention relates to a cutting method for cutting a semi-plastic material (before curing).

b. Prior Art ALC panels are now widely used as construction materials. To manufacture this ALC panel, first, several cubic meters of concrete is poured into a formwork, and then, when the concrete reaches the specified hardness, piano wire is inserted into the concrete and cut into the desired size. Then, the ALC panel is completed by curing in an autoclave.

Several types of cutting methods using piano wire have been proposed. The simplest method is to move the concrete material perpendicular to the piano wire that is tightly stretched in a fixed position, or to cut the concrete material at a fixed position and move the piano wire.

However, these methods require a large amount of force to cut due to the large horizontal angle of the blade, and the cutting quality is poor.
As a result, the cut surface becomes rough in a so-called serpentine shape. If the cut surface is rough like this, when finishing the surface of the panel after curing, adhesion of the finishing agent is extremely difficult due to the ALC powder blowing, and the yield rate of the finishing agent is reduced due to the unevenness of the surface. Deteriorate.

Therefore, as shown in FIG. 5, the piano wire 21 is wrapped around a pair of rollers 22, and the cake 23 is moved in a direction perpendicular to the piano wire 21 while periodically driving the rollers 22 in both forward and reverse directions. A method has been proposed (patent application
6-68206 (Japanese Unexamined Patent Publication No. 48-34927)). This cutting method results in a fairly smooth cut surface.

However, since the speed of the piano wire 21 becomes 0 at the moment when the roller 22 reverses, a so-called shed pattern 24 is formed on the cake 23 at this time. Such a shed pattern is unnecessary unless specifically desired as a construction material, and ALC
If possible, it is desirable to have no pattern from the viewpoint of preventing powder blowing and improving the yield of the finishing agent applied to the panel surface.

Therefore, as shown in FIGS. 6 and 7, the piano wire 21
At the moment when the velocity Vp becomes 0, the velocity V of the piano wire 21 in the lateral direction (direction perpendicular to the piano wire 21) with respect to the cake 23
A cutting method has been proposed in which B is controlled to be 0 (
JP-A-59-103711). Specifically, the device used in this cutting method includes a pair of rollers 25 as shown in FIG.
It consists of a moving table 26 to which is attached a moving table 26, and a drive device (not shown) that drives the moving table 26 in a direction perpendicular to the piano wire 21. A piano wire 21 is wound around a pair of rollers 25, and the piano wire 21 is configured to vibrate reciprocatingly in its longitudinal direction by periodically reversing the rollers 25. Then, at the moment when the roller 25 reverses, that is, at the moment when the speed of the reciprocating vibration motion of the piano wire 21 becomes vpIJ<o, the drive device of the moving table 26 is controlled so that the moving speed V of the moving table 26 becomes O. It has become.

C8 Problems to be Solved by the Invention The cutting method that does not create a shed pattern on the cake is as described above, but this cutting method has the following problems. In other words, if the reciprocating vibration period of the piano wire 21 and the speed fluctuation period of the movable table 26 could be perfectly matched, the shed pattern would be completely eliminated, but in reality, the
Since the frequency of the vibration is very high, 100 times/min or more, it is extremely difficult to accurately drive and control the movable table 26 in synchronization with the piano wire 21. For this reason, the current situation is that some shed patterns are unavoidable.

The present invention has been devised to effectively solve the above-mentioned problems, and its purpose is to provide a method for cutting a semi-plastic cake that can obtain a smooth cut surface without any shed patterns. It's about doing.

d. Means for Solving the Problems In order to solve the above-mentioned problems, the present invention presses a tensioned piano wire against a semi-plastic cake, causes the piano wire to vibrate reciprocatingly in its longitudinal direction, and performs this reciprocating motion. In the cutting method of cutting the cake by moving the cake or the piano wire in a direction perpendicular to the vibration direction, the piano wire has a length of at least 1 m or more, and the piano wire is cut at a speed of 0.3 to 30 m/min. The cake or the piano wire is moved at a speed of 0.5 to 20 m/min in a direction perpendicular to the direction of the reciprocating vibration, and
Further, when the speed of the reciprocating vibration motion of the piano wire becomes zero, the moving speed of the cake or the piano wire is controlled to become zero.

e. Function: In the cutting method configured as described above, the piano wire is
The length of piano wire in parentheses is 0.3 to 3 m or more.
Since the reciprocating vibration movement is performed at a speed of 0 m1 min, the frequency of the piano wire is reduced to about 15 times/min or less, and drive control of the piano wire in the perpendicular direction becomes easy and accurate. Therefore, the reciprocating vibration period of the piano wire can be perfectly matched with the speed fluctuation period of the piano wire in the perpendicular direction, and at the moment when the reciprocating vibration speed of the piano wire reaches O, the piano wire moves in the perpendicular direction. The speed can also be set to 0. This makes it possible to completely eliminate the occurrence of shed patterns on the cut surface as in the prior art, and it becomes possible to obtain an extremely smooth cut surface.

f. Example An example of the present invention will be described below based on the drawings. 1 to 3 show a cutting device for carrying out the cutting method according to the present invention, in which FIG. 1 is a front view of the device, FIG. 2 is a plan view of the device, and FIG. shows a side view of the device. In FIG. 1, reference numerals 1 and 2 denote a pair of parallel rails laid in the horizontal direction, on which a bogie 3 can run at an angle of 1.degree.2.

The trolley 3 is capable of loading a semi-plastic cake 4, and the cake 4 demolded from the mold is conveyed to the cutting process while being placed on the trolley 3.

Slightly high foundations 5 are constructed on both sides of the pair of rails 1 and 2, and a pair of rails 6 and 7 parallel to the rails 1 and 2 are laid on these foundations 5, respectively. As shown in FIGS. 1 to 3, a pair of movable tables 8 and 9 are disposed on the pair of rails 6 and 7, respectively, and the pair of movable tables 8 and 9 move the U-shaped frame 10. Both left and right ends are supported. Note that the movable tables 8 and 9 are driven by a drive device (not shown).

Specifically, the frame 10 is arranged so as to straddle the cake 4, and both ends of the frame 10 are connected to a pair of rails 1.
, 2 extends to a slightly lower position. A pair of guide rollers 11 and 12 are provided at both ends of this frame 10.
are attached to the frame 10, and a pair of drive rollers 13, 14 are attached to both shoulders (portions bent at right angles) of the frame 10. An endless piano wire 15 is wrapped around these four rollers 11 to 14, and a portion of the piano wire 15 is stretched across the cake 4. The piano wire 15 is moved in the direction of the arrow in FIG. 1 by the rotation of the pair of driving rollers 13 and 14. A tension roller 16 is attached to the intermediate portion of the frame 10 in a state urged downward by a spring, and the tension roller 16 applies a predetermined tension to the piano wire 15. Furthermore, a pair of auxiliary rollers 17.1B are installed inside both ends of the frame 10, and the pair of auxiliary rollers 17.18 act on the piano wire 1 when cutting the cake 4.
The horizontal force acting on 5 is supported.

Specifically, the pair of drive rollers 3.14 are driven to rotate alternately in both forward and reverse directions at a predetermined period. In this embodiment, the pair of drive rollers 3 and 14 are driven to rotate in the same direction in the range where the joint fitting 19 of the piano wire 15 extends from one guide roller 11 through the tension roller 16 to the other guide roller 12. It is composed of Therefore, if the average reciprocating speed of the piano wire 15 (average speed of the joint fitting 19) is Vpm/min, and the reciprocating distance of the fitting 19 is Lm, then the rotation period T of the drive roller 3.14 (normal rotation (reverse rotation) start to the start of the next normal rotation (reverse rotation)) is L/Vp, and the frequency f (times/min) of the piano wire 15 is Vp/L. In this example, Vp-0, 3-30 m/min, L = 2.0-10 m.

Since it is set in the range of 4 seconds < T < 33.3 minutes, 0
．． 03<f<15 times.

The drive device of the moving carriage 8.9 is adapted to operate in synchronization with the reversal period of the drive roller 3.14.

In detail, as shown in Fig. 4, when the speed Vp of the piano wire 15 becomes O (the moment when the drive rollers 13 and 14 reverse)
The drive device for the movable base 8.9 is controlled so that the moving speed V of the movable base 8.9 becomes O.

The cake 4 is cut by the cutting device configured as described above.
This is done by moving the moving table 8.9 or the frame 10 in the direction of arrow C in FIGS. 2 and 3 while reciprocating the piano wire 15 alternately in the directions of arrows a and b in FIG.

In this embodiment, the frequency f of the piano wire 15 is 15 times/
Since the size is extremely small, less than 1 minute, the movement of the moving table 8.9 can be easily and accurately controlled, and therefore, as shown in FIG.
It is possible to precisely match the times when and V become 0, and thereby it is possible to completely prevent the occurrence of a shed pattern on the cut surface of the cake 4.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment and can be modified as necessary. For example, the piano wire 15 does not necessarily need to be stretched in an endless manner; if there is sufficient surrounding space, the piano wire 15 may be strung in a straight line in the horizontal direction, and the piano wire may be vibrated in a reciprocating manner. Further, in the above embodiment, the frame 10 is moved, but the frame 10 may be fixed and the cake 4 may be moved.

g. Effects of the Invention As described above, the present invention comprises a piano wire with a length of 1 m or more, and this piano wire is vibrated back and forth at a speed of 0.3 to 30 m/min, so that the piano wire is reciprocated. The vibration frequency can be reduced to 15 times/min or less. Therefore, when controlling the movement of the piano wire in the perpendicular direction to O at the moment when the vibration velocity of the piano wire becomes O, it is possible to easily and reliably control the movement of the piano wire in the perpendicular direction. It can be completely eliminated and an extremely smooth cut surface can be obtained. Furthermore, since the cut surface becomes smooth, it is possible to improve the yield of ALC powder spraying and the finishing agent applied to the panel surface.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention, in which FIG. 1 is a front view of a cutting device, FIG. 2 is a plan view of the same device, and FIG. 3 is a side view of the same device. It is a diagram. Also, Figures 5 to 7
The figures show conventional examples, in which FIG. 5 is a schematic diagram of a conventional cutting device, FIG. 6 is a schematic diagram of another conventional cutting device,
FIG. 7 is a speed diagram illustrating the operating condition of the device shown in FIG. 6. 1.2, 6.7... Rail, 3... Trolley, 4... Semi-plastic cake, 8.9... Moving platform, 10... Frame, 11, 1
2... Guide roller, 13.1.4... Drive roller, 15... Endless piano wire, 16... Tension roller, 17, 18... Auxiliary roller, 19... Joint metal fitting. Patent applicant Nippon Iton Kogyo Co., Ltd. Agent Patent attorney Hisao Okuyama (and 2 others) Figure 3 Figure 4 Figure 6 Figure 7 x grain size)
”LfminvB: Device (t7) Terminal father 1 or hand hyperactivity speed inninP B

Claims (1)

[Claims] A cutting method in which a tensioned piano wire is pressed against a semi-plastic cake, and the cake is cut by moving the cake or the piano wire in a direction perpendicular to the direction of the reciprocating vibration while reciprocating the piano wire in its longitudinal direction. In,
The piano wire is configured to have a length of at least 1 m or more, and the piano wire is vibrated reciprocatingly at a speed of 0.3 to 30 m/min, and the cake or piano wire is moved in a direction perpendicular to the direction of the reciprocating vibration. A semi-plastic cake, characterized in that it is moved at a speed of 5 to 20 m/min, and the moving speed of the cake or piano wire is controlled to be 0 when the speed of the reciprocating vibration motion of the piano wire becomes 0. cutting method.