JPH0357547A - automatic centrifugal casting machine - Google Patents

Abstract

PURPOSE:To pour molten metal into a mold under the optimum condition, to simplify the operation and to uniformize the quality by accumulating casting data into an arithmetic processing unit at each mold. CONSTITUTION:At the time of casting by using the mold 1 beforehand accumulating the casting data, type for the mold 1 is inputted into a CPU 20, and running pattern, tilting pattern, rotating pattern and weight pattern accumulated at each type are instructed to a sequencer device 17 as control data. According to the instruction of the sequencer device 17, the mold 1 is rotated at the prescribed number of revolutions based on the control data, and a traveling truck device 7 is run at the prescribed velocity and further, the prescribed quantity of molten metal is weighed with a weigher 13 and a triangle ladle tilting device 9 is tilted at the prescribed velocity. By this method, as the pouring of molten metal into the mold 1 is executed under the optimum condition, the operation is simplified oand the quality is uniformized.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to an automatic centrifugal casting machine for producing cylindrical castings such as cast iron pipes.

Conventional technology Traditionally, "trough casting" was used to cast cylindrical castings.
Now, insert the gutter of the pouring platform into the inside of the mold that rotates around its axis, tilt the ladle device, pour the molten metal from the tip of the gutter into the inside of the mold, and then move the pouring cart. The mold was moved backward to supply molten metal along the entire length of the mold. In addition, in ``one-end casting,'' molten metal was poured from one end of the mold using the force created by the tilt of the gutter. The quality of the cylindrical casting was controlled by adjusting the amount of molten metal stored in the ladle of the pouring truck, the tilting speed of the ladle device, and the retraction speed of the pouring truck.

Problems to be Solved by the Invention However, in the conventional configuration described above, the worker operated each switch on the control device to control the ladle device and the pouring cart. There was a problem that a difference occurred in the control amount depending on the method, and casting with uniform quality was not possible. Furthermore, since it is necessary to operate many switches, there is a problem in that control requires skill.

The present invention solves the above-mentioned problems, and aims to provide an automatic centrifugal casting machine that can be controlled accurately and easily without relying on the experience or intuition of the operator.

Means for Solving the Problems In order to solve the second problem, the present invention provides a turning roll device that rotates a mold around its axis, and a turning roll device that supports a gutter portion inserted into the inside of the mold. a ladle device installed on the pedestal via a measuring instrument and tilted to supply molten metal to the gutter, electrically connected to the turning roll device and the ladle device, The configuration includes a sequencer device that controls the sequencer device, and an arithmetic processing device connected to the sequencer device via a signal path.

Operation With the above-described configuration, the gutter portion is inserted into the mold while the mold is being rotated around the axis by the turning roll device. Then, the ladle device is tilted to supply the internal molten metal to the gutter, and the molten metal is poured into the mold from the tip of the gutter to supply the molten metal over the entire length of the mold. The operations during this time are controlled by a sequencer device, and the rotational speed of the mold, the casting weight of the molten metal obtained by the measuring device, and the tilting speed of the ladle device are transmitted to the processing device via the sequencer device, and the tilting pattern, The rotation pattern and weight pattern are stored as casting data.

Then, casting data is collected for all molds of different shapes and stored in the processing unit for each mold type. Note that the casting data can be modified by the arithmetic processing device, and it is also possible to set arbitrary casting data and perform casting regardless of the collected casting data.

When casting, the model of the mold is input to the arithmetic processing device, and the tilt pattern, rotation pattern, and weight pattern accumulated for each model are instructed to the sequencer device as control data. The instructed sequencer device rotates the mold at a predetermined number of revolutions based on the control data, measures a predetermined amount of molten metal with a measuring device, and topples the ladle device at a predetermined speed. Therefore, simply by inputting the model of the mold placed in the turning roll device 2 into the processing unit, the pouring into the mold will be carried out under optimal conditions, simplifying the operation and ensuring uniform quality. .

EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In the figure, a mold 1, which is a casting machine, is supported by a turning roll device 2 and arranged horizontally, and a first drive motor 3 of the turning roll device 2 is provided with a first encoder 4. Further, the mold 1 is provided with a temperature sensor 5. A pouring cart device 6 is disposed facing the opening of the mold 1, and the pouring cart device 6 is formed of a traveling cart device 7, a gutter portion 8, and a triangular ladle tilting device 9. Further, a second encoder 12 is provided in conjunction with the second drive motor l1 of the traveling trolley device 7, and the gutter portion 8 has a length corresponding to the entire length of the mold 1. Furthermore, a measuring device 13 is interposed between the triangular ladle tilting device 9 and the traveling cart device 7, and the triangular ladle tilting device 9 has a third drive motor for tilting the three-claved ladle l4. 15 and a third encoder J6.

The first encoder 4, the temperature sensor 5, the second encoder 12, and the measuring instrument 3 are connected to the casting data collection circuit I8 of the sequencer device 17, and the first drive motor 3
The second drive motor 11 and the third drive motor 15 are connected to the casting control circuit 19 of the sequencer device 17. In addition, the sequencer device ■7 has a CP as an arithmetic processing unit.
A central processing unit (U) 20 is connected.

Hereinafter, the effects of the above configuration will be explained.

While the mold 1 is rotationally driven around the axis by the turning roll device 2, the traveling truck device 7 is moved forward toward the mold 1, and the gutter portion 8 is inserted into the mold 1. Then, the triangular ladle I4 is tilted by the triangular ladle tilting device 9, the molten metal inside is supplied to the gutter section 8, and the traveling cart device 7 is moved backward while pouring the molten metal into the mold 1 from the tip of the gutter section 8. molten metal is supplied over the entire length of the mold l.

In the case of "one-end casting", the molten metal is poured from one end of the mold 1 with the force generated by the slope of the gutter.

101 Then, during this time, the sequencer device I7 controls the first drive motor 3, the second drive motor II, and the third drive motor 15.
At the same time, the rotation speed of the mold 1 detected by the first encoder 4, the traveling speed of the traveling trolley device 7 detected by the second encoder 12, and the casting weight of the molten metal obtained by the scale I3 are controlled. The tilting speed of the triangular ladle tilting device 9 detected by the third encoder 6, the temperature of the mold 1 and the temperature of the molten metal detected by the temperature sensor 5 are transmitted to the CPU via the casting data collection circuit 18 of the sequencer device I7.
20, and send the sent casting data to the running pattern,
It is stored as a tilt pattern, rotation pattern, and weight pattern. Then, the CPU 20 collects casting data for all molds 1 with different shapes, and
Accumulate in.

When casting using mold 1 for which casting data has been previously accumulated, the model of mold 1 is input to the CPU 20, and the running pattern, tilting pattern, rotation pattern, and weight pattern accumulated for each model are used as control data in the sequencer. Instruct device l7. The instructed sequencer device rotates the mold I at a predetermined rotational speed based on the control data, causes the traveling trolley device 7 to travel at a predetermined speed, and further measures a predetermined amount of molten metal with the measuring device I3,
The triangular ladle tilting device 9 is tilted at a predetermined speed. Therefore, the mold 1 placed on the turning roll device 2
Just by freely setting and inputting the model number on the graphic screen of the monitor connected to the CPU 20, the pouring place for mold 1 is placed under optimal conditions, simplifying operations and ensuring uniform quality. is planned.

Effects of the Invention As described in Section 2, according to the present invention, by storing casting data for each mold in the processing unit, molds can be molded under optimal conditions simply by inputting the mold type into the processing unit. This makes it possible to simplify the operation and make the quality uniform.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

Claims (1)

[Claims] 1. A turning roll device that rotates the mold around its axis, a pedestal part that supports the gutter part inserted into the mold, and a measuring device installed on the pedestal part to tilt it. a ladle device that supplies molten metal to the gutter;
An automatic centrifuge characterized by comprising: a sequencer device electrically connected to a turning roll device and a ladle device to control each device; and an arithmetic processing device connected to the sequencer device via a signal path. Casting machine.