JPH0794126B2 - Lightweight cellular concrete cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a lightweight cellular concrete cutting device for cutting a cake of lightweight cellular concrete formed by foaming a cement slurry.

(Prior Art) Light-weight cellular concrete (hereinafter referred to as “ALC”) panels and blocks are generally manufactured as follows. First, a mixture of various raw materials such as cement, aggregate, and water is made into a cement slurry, which is poured into a mold and foamed and solidified to produce cake-like ALC. After this, the ALC cake is removed from the mold and hung by a hoist machine etc.
It is sent to a cutting device where it is cut into panels or blocks. Then, this is carried into a curing pot and cured by autoclave to be completely cured.

Here, the above-mentioned ALC cutting device has the following configuration using a piano wire as a cutting blade. The device frame has a U-shape integrally having a pair of support parts located on both sides of the ALC cake to be cut and a connecting part for connecting them, and one drive motor is mounted on the connecting part. .
A piano wire drive unit for attaching a piano wire for ALC cutting is provided on each of the opposing support units of the apparatus frame, and these are reciprocally rotated to the left and right by the power of the drive motor. When cutting the ALC cake, the piano wire is tensioned between the piano wire drive parts, the ALC cake is loaded onto the piano wire, and the piano wire is reciprocated left and right by the drive motor mounted on the device frame. While driving, the entire apparatus frame is gradually raised along the guide frame. This cuts the ALC cake from bottom to top by the piano wire.

In such a configuration in which the two piano wire driving units are reciprocally rotated to the left and right to reciprocate the piano wire stretched between the two, the two piano wire driving units need to move in synchronization. Therefore, in a conventional cutting device that drives two piano wire drive units with a single drive motor, a link rod is slidably arranged at a connecting portion of the device frame, and a link mechanism using this link rod is used. Therefore, the structure in which the left and right piano wire drive units are mechanically driven synchronously is common.

(Problems to be Solved by the Invention) However, in the above-mentioned configuration, since the left and right piano wire drive units are mechanically driven synchronously via the link mechanism, the structure is enlarged by the amount of the link mechanism. In addition, since the link mechanism needs to be robust, there is a drawback that the weight becomes considerably heavy.

In addition, since it is necessary to dispose the link mechanism, the device frame has no choice but to have a U-shape having a connecting portion. For this reason, when the ALC cake is carried into the cutting device from above with a hoist machine, or when the ALC cake after cutting is pushed out by the pusher device, the connection part of the device frame becomes an obstacle, and the entire device frame Must be retracted to a position that does not disturb the user beforehand, which limits the improvement of productivity.

The present invention has been made in view of the above circumstances. Therefore,
The purpose is to eliminate the need for a link mechanism for synchronously driving the left and right piano wire drive parts, which enables downsizing and weight reduction, and prevents the device frame from interfering with other devices, thus improving productivity. An object of the present invention is to provide a lightweight cellular concrete cutting device which can also improve the efficiency.

[Structure of the Invention] (Means for Solving the Problem) An ALC cutting device of the present invention cuts an ALC by straddling a piano wire between opposed supporting parts and reciprocating the piano wire left and right. A first drive motor and one end of a piano wire are connected to one of the supporting portions, and the piano wire is driven to the left and right by receiving the power of the first drive motor.
And a second driving motor and the other end of the piano wire are connected to the other of the supporting portions, and the first piano wire receives the power of the second driving motor. A second piano wire drive unit for driving the piano wire left and right in cooperation with the drive unit is provided, and a synchronous drive device for electrically synchronously driving each of the first and second drive motors is provided. However, it has a feature.

In this case, both supporting parts located at both ends of the piano wire may be separated from each other.

Further, the first and second piano wire drive units may be provided with a position sensor for detecting a phase in the reciprocating motion.

(Operation) The first and second piano wire drive parts provided on each support part cooperate with each other to drive the piano wire to the left and right.
C is disconnected. Each of these piano wire drive units is independently driven by each of the first and second motors, but since each motor is electrically driven synchronously by the synchronous drive device, the piano wire has a constant tension. It is reciprocated left and right while being stretched. According to such an electrical synchronous drive system, since it is sufficient to connect the synchronous drive device and each motor with a cable, the conventional structure in which the left and right piano wire drive parts are mechanically synchronously driven by the link mechanism is used. Compared to this, the overall size and weight can be reduced.

Further, as described above, since the mechanical link mechanism is completely unnecessary, it becomes possible to omit the connecting portion for connecting the supporting portions which is conventionally required for disposing the link mechanism, and the piano wire of the piano wire can be omitted. Since both supporting portions located at both ends are separated from each other, further downsizing and weight reduction can be achieved, and productivity can be improved by eliminating interference with other devices.

Further, in the configuration in which the first and second piano wire driving units are provided with the position sensor for detecting the phase, the phase alignment of both piano wire driving units becomes easy.

(Example) Hereinafter, one example of the present invention will be described with reference to the drawings. Here, the ALC cutting device according to the present invention is applied to a production line capable of selectively producing ALC panels or blocks.

Although not shown, the ALC cake manufacturing apparatus has the same configuration as the conventional one. That is, the cement slurry is poured into a box-shaped mold to foam and solidify until it becomes a semi-cured state, and then the ALC cake is removed from the mold.

The demolded ALC cake has a large rectangular shape with a longitudinal dimension of, for example, 6 m. When manufacturing either ALC panels or blocks, first the primary cross section is divided into two equal parts in the longitudinal direction. To be done. AL crossed in this way
The C cake 2 is lifted by a hoist machine and carried to the secondary transverse port where the cutting device of the present invention is arranged.
When manufacturing an ALC block, this secondary crossing port is further crossed at intervals of, for example, 20 cm, and when manufacturing an ALC panel, the secondary crossing port is not crossed to the next crossing port. And is longitudinally cut in the longitudinal port at intervals of, for example, 10 cm along the longitudinal direction.
This allows a fine ALC block to be crossed if it is crossed, and a length of 3 for example if it is not crossed.
An ALC panel of m and 10 cm thick is cut out. After that, these semi-cured ALCs, as is well known, were loaded into a curing pot and cured in an autoclave, so that the fully cured ALC was obtained.
C product is manufactured.

Now, the cutting device of the present invention provided in the above-mentioned secondary traverse port will be described in detail. This is a pair of front and rear ALC cakes 1 as shown in FIGS. 2 and 3. A guide frame 2 having a gate shape is provided. Each of the guide frames 2 is provided so as to straddle the transport path of the ALC cake 1, and guides the left and right support frames 3 and 4 provided along the transport path so as to be vertically movable on both left and right sides of the transport path. . Pulling wires 5 are attached to both ends of each supporting frame 3 and 4.
Is connected to the hydraulic cylinder 7 via the guide pulley 6 provided on the upper portion of the guide frame 2. As a result, the hydraulic cylinder 7
When the rod 7a is pulled in by actuating, the pulling wire 5 raises the left and right support frames 3 and 4. The distance between the support frames 3 and 4 is
A pusher device 8 for pushing the ALC cake 1 on the roller conveyor even when they are in the lowered position shown in FIG.
Is set to a size that allows it to enter between the support frames 3 and 4.

Each of the support frames 3 and 4 corresponds to a support portion for bridging the piano wire P (only shown in FIGS. 3 and 4) for cutting the ALC cake 1 between them, and the present embodiment In the example, they are separated from each other. The left side support frame 3 among them has a first drive motor 9 composed of, for example, an AC servomotor, a speed reducer 10, and a crank mechanism for converting rotational movement of the first drive motor 9 into left and right swing movements. 11 and
The first piano wire drive unit connected to the crank mechanism 11.
13 and 13 are attached. Further, similarly to the left-side support frame 3, the right-side support frame 4 includes a second drive motor 14 that is also an AC servomotor and a speed reducer 15.
A crank mechanism 16 for converting the rotational motion of the second drive motor 14 into a left-right swing motion, and a second piano wire drive unit 17 connected to the crank mechanism 16 are attached. The mutual relationship among the drive motors 9 and 14, the crank mechanisms 11 and 16, and the piano wire drive units 13 and 17 is schematically shown in FIG.

The first and second piano wire driving parts 13 and 17 provided on the support frames 3 and 4 extend along the longitudinal direction of the support frames 3 and 4, and both ends and intermediate parts thereof are bearings 18. Is rotatably supported by the support frames 3 and 4,
It is reciprocally driven by the crank mechanism 16 so as to swing its upper part to the left and right. A large number of mounting grooves (not shown) for inserting the piano wire are formed at equal intervals on the upper surface of each piano wire driving unit 13, 17, and both ends of the piano wire for cutting the ALC cake are placed in these mounting grooves. The piano wire is housed in each of the piano wire drive units 13, 1 by operating a tensioning cylinder (not shown).
It is possible to stretch with a predetermined tension between the seven.

The first and second drive motors 9 and 14 are designed to be electrically synchronously driven. Therefore, in this embodiment, a synchronous drive device 19 as shown in FIG. 5 is provided. There is. This synchronous drive device 19 has a configuration in which the servo circuits 22 and 23 control the speeds of the drive motors 9 and 14 based on the speed signals from the rotary encoders 20 and 21 built in the drive motors 9 and 14, respectively. From the controller 24 to each servo circuit
A control signal for making the speed difference between both drive motors 9 and 14 zero is given to 22, 23, whereby the two drive motors 9 and 14 are operated at the same speed. Further, the first and second piano wire driving units 13 and 17 are respectively provided with position sensors 25 and 26, which are electromagnetic proximity switches, and the reciprocating piano wire driving units 13 and 17 are provided. The position detection signals S _P1 and S _P2 are output to the servo circuits 22 and 23 when the specific position (phase) is reached. Then, the speed controller 24 is configured to execute the phase matching mode when the phase matching switch 27 is turned on. When this phase matching mode is executed, first, the first and second drive motors 9 and 14 are operated at low speed, and in that state, the position sensors 25 and 26 provided in the piano wire drive units 13 and 17 are provided. Position detection signals from S _P1 , S
The speed of one drive motor was finely adjusted so that _P2 was output at the same timing.
The swing phases of are matched.

Next, the operation mode of this embodiment will be described.

(1) When manufacturing ALC panel First, the ALC cake 1 is manufactured, and the ALC cake 1 is conveyed from above by a hoist machine to the secondary traversing port in which the cutting device of the present invention is arranged in a state of being traversed primary. At this time, in particular, in this embodiment, since the support frames 3 and 4 are separated from each other, the support frames 3 and 4 do not interfere with the loading of the ALC cake 1 by the hoist machine.
It is not necessary to retract each support frame 3 and 4.

Now, when manufacturing an ALC panel, since it is not necessary to carry out a secondary traverse, the drive motors 9 and 14 provided on each support frame at this secondary traverse port are not operated. Then, as shown in FIG. 3, the pusher device 8 for pushing the ALC cake 1 enters between the support frames 3 and 4 and pushes the ALC cake 1 as it is to the next longitudinal port. Also in this case, since the support frames 3 and 4 are separated from each other in this embodiment, the support frames 3 and 4 do not interfere with the pusher device 8 and are retracted to a special position in advance. It doesn't have to be side dishes. After this, ALC cake 1 at the longitudinal port
After being longitudinally cut along the lengthwise direction, it is loaded into the curing pot and a fully cured ALC panel is completed.

(2) When manufacturing an ALC block In this case, secondary crossing is further performed on the ALC cake 1 that has been primary crossed. Therefore, a required number of piano wires for cutting are stretched between the piano wire drive units 13 and 17 of the support frames 3 and 4. For this purpose, first, the phase matching switch 27 of the synchronous drive device 19 is turned on to execute the phase matching mode. As a result, the first and second piano wire driving units 1
Since the swing phases of 3, 17 are matched, the stop switch of the synchronous drive device 19 is operated to stop both drive motors 9, 14.
Then, a piano wire is stretched between the first and second piano wire driving units 13 and 17, and a tensioning cylinder (not shown) is operated to bring each piano wire into a tensioned state with a predetermined tension.

In this state, the ALC cake 1 that has undergone the primary crossing is carried to the secondary crossing port by a hoist machine,
It is located so that it rides on the piano wire between 3 and 4. After that, the hydraulic cylinder 7 of the cutting device is operated, and the drive motors 9 and 14 of the support frames 3 and 4 are synchronously driven by the synchronous drive device 19. By the operation of the first and second drive motors 9 and 14, the first and second piano wire drive units 13 and 17 are reciprocally driven so as to swing the upper part to the left and right, so that each piano wire is moved to the left and right. Move back and forth. In this case, since the drive motors 9 and 14 are synchronously driven by the synchronous drive device 19, the piano wires always reciprocate left and right while being stretched with a constant tension. At the same time, the hydraulic cylinder 7 is actuated to gradually raise the support frames 3 and 4 by the pulling wire 5, whereby the ALC cake 1 is shredded laterally by the piano wires. When this second crossing is over,
Again, the pusher device 8 carries the ALC cake 1 to the vertical cut port, and the vertical cut here cuts it into blocks. After this, autoclave curing is carried out in the same manner as the above-mentioned ALC panel manufacturing process, and thereby a completely cured ALC block is completed.

According to the present embodiment as described above, the drive motors 9 and 14 are provided on the support frames 3 and 4 on which the first and second piano wire drive units 13 and 17 are disposed, respectively. Since the 14 is driven electrically synchronously by the synchronous drive device 19, the overall size and weight can be reduced compared to the conventional configuration in which the left and right piano wire drive parts are mechanically driven synchronously by the link mechanism. Become. Since such a link mechanism has conventionally been manufactured in a considerably large size and robustly so as to transmit a large power for cutting the ALC cake, it is possible to eliminate this.
This means that the support frames 3 and 4 can be reduced in size and weight, and in turn, the related devices such as the hydraulic cylinder 7 for lifting the support frames 3 and 4 can be reduced in size and weight.

Moreover, particularly in the present embodiment, since the support frames 3 and 4 are separated from each other, the device frame has a U-shaped configuration including a support portion facing each other and a connecting portion connecting them. However, in addition to enabling further weight reduction, the following advantages also occur. That is, in the conventional U-shaped frame, when the ALC cake is carried into the cutting device from above by a hoist machine or after cutting,
When the ALC cake is pushed out by the pusher device and carried out, the device frame becomes an obstacle, so it was necessary to perform an operation such as retracting it to a position where it would not be an obstacle in advance. On the other hand, in this embodiment, the support frame 3,
Since 4 is separated from each other, even if the ALC cake 1 is carried from above by a hoist machine, etc.
Even when the cake 1 is pushed out by the pusher device 8, the support frames 3 and 4 do not interfere at all, and the hoist machine or the pusher device 8 can be freely introduced.
As a result, the retracting structure and the retracting operation of the device frame are not required, and it is possible to simplify the device and improve the productivity.

Further, according to the present embodiment in which the position sensors 25 and 26 are provided in the first and second piano wire driving units 13 and 17, respectively, the swing phases of the piano wire driving units 13 and 17 can be easily matched. You can
Such a configuration is useful, for example, when trying to match the swing phases of both piano wire drive units 13 and 17 again when only one of the piano wire drive units is forcibly moved by an external force. .

[Effect of the Invention] As described above, according to the invention of claim 1, the link mechanism for synchronously driving the left and right piano wire drive sections, which has been conventionally required, is completely unnecessary. The effect that it can be realized. Further, according to the invention of claim 2, it is possible to further reduce the weight and it is possible to avoid the cutting device from interfering with other devices.
Productivity can be improved. Further, according to the invention of claim 3, in addition, there is an effect that the phase alignment of the two piano wire drive parts becomes easy.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a plan view and FIG.
The drawing is a front view, FIG. 3 is a partial perspective view, FIG. 4 is a schematic view showing the relationship between a drive motor and a piano wire drive unit, and FIG. 5 is a block diagram of a synchronous drive device. In the drawing, 1 is an ALC cake, 3 and 4 are support frames (supporting parts), 9 is a first drive motor, 13 is a first piano wire drive part, 14 is a second drive motor, and 17 is a second drive motor. A piano wire drive unit, 19 is a synchronous drive device, and 25 is a position sensor.

Claims (3)

[Claims] 1. A lightweight cellular concrete is cut with the piano wire by reciprocating left and right a piano wire spanned between opposing support parts, wherein one of the support parts comprises: And a first piano wire drive unit that is connected to one end of the piano wire and that drives the piano wire to the left and right by receiving the power of the first drive motor. On the other hand, the second drive motor and the other end of the piano wire are connected to each other, and the power of the second drive motor is received to cooperate with the first piano wire drive unit to move the piano wire to the left and right. 2. A lightweight cellular concrete cutting device, comprising: a second piano wire drive unit to be driven; and a synchronous drive device for electrically synchronously driving the first and second drive motors. 2. The lightweight cellular concrete cutting device according to claim 1, wherein both supporting portions located at both ends of the piano wire are separated from each other. 3. The lightweight bubble according to claim 1, wherein the first and second piano wire driving units are provided with position sensors for detecting a phase in the reciprocating motion. Concrete cutting equipment.