JP2808121B2 - Casting line control method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting line control method for controlling required operation steps (a pouring operation, a cooling operation, etc.) in a casting line.

[Conventional technology]

In the casting line, a pouring step, an annealing step, a cooling step, and the like are connected in series by a conveyor or the like.

In these casting lines, when casting a large variety of small cast products, if the type is different, the type of pouring, the amount of pouring, the need for a cooling auxiliary line, the amount of water sprayed on the cooling drum, etc. are different, so conventionally, Immediately before each process, an appropriate sensor is installed, and information on a mold flowing through the line (information on a casting product cast by the mold).
Was determined, and processing was performed in accordance with the information.

[Problems to be solved by the invention]

However, in the conventional casting line technology, since the sensors are installed immediately before each operation, there is a problem that equipment costs are increased and management is troublesome.

An object of the present invention is to eliminate such inconvenience.

[Means for solving the problem]

In order to solve the above-mentioned problem, in a casting line control method according to the present invention, a mold is formed and sent to a casting line, and the casting line is controlled in a method of manufacturing a casting product while the mold passes a specific operation process. A control computer for controlling the specific work process is installed on the casting line, and the information of the mold in the actual casting line is input to the control computer in the order of molding, and the mold is used for a required specific work process in the casting line. The arrival of the mold is confirmed by the number of molding shifts of the mold (the number of mold moldings), and a work instruction is sent to the specific work process based on information input to the control computer of the mold in advance. It is.

The specific operation step is a pouring step, an annealing step or a cooling step.

[Action]

In the casting line control method configured as described above, since it is configured as described above, without providing information display means on the mold, the mold is determined at the position of the specific work process. Therefore, it is possible to perform a casting operation according to appropriate information in a casting line without providing a detecting means for performing the casting.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIG.

In the figure, T denotes a mold transfer line, which is composed of an upper die transfer line 1, a lower die transfer line 2, a series of bogie lines 3, a primary cooling line 4, a secondary cooling line 5, and a cooled product transfer line 6. ing. Addresses 1 to 322 are defined in the mold transport line T, and the mold shifts on these addresses.

 Next, the mold transport line T will be described in detail.

Numeral 11 denotes an upper mold making machine and 21 denotes a lower mold making machine, which produces the upper mold 111 or the lower mold 211 functioning as a mold. This upper mold 11
At the stage of molding the lower mold 211 and the lower mold 211, information of the mold corresponding to the mold (“information of a casting product to be cast by the mold”, the same applies hereinafter), for example, a pouring type, a pouring amount, an addition The amount of the agent, the necessity of the annealing time, the ratio of the pouring amount and the mold sand and the like are sequentially recorded in the control computer C. Therefore, if the information of the molds (upper and lower molds) currently being formed is known, the control computer C can know the information of the mold M at any other address on the mold transport line T. Upper mold manufactured by upper mold making machine 11
The lower mold 211 manufactured by the lower mold making machine 21 is conveyed by the upper mold transfer line 1 to the position 31 of the bogie line 3 where the weight is placed.
In addition, both the upper die transfer line 1 and the lower die transfer line 2 are suitably roller conveyors.

Next, the bogie line 3 is composed of bogies connected at regular intervals. The upper mold 111 and the lower mold 211 are placed on a bogie as a mold M while aligning the frame at the position 31 where the weight is placed. The mold M moves in the direction of the arrow with the movement of the carriage, and reaches the pouring position 32. At this time, pouring position 32
Since the information of the mold M shifted to the above can be known by the control computer C, pouring is automatically performed after judging the kind of pouring, the amount of pouring, and the presence or absence of the additive in accordance with the information of the mold M. The pouring time is applied by obtaining the time from an internal function of the computer without inputting the time to the computer. The mold M after pouring shifts in the direction of the arrow along the bogie line 3 while being naturally cooled.
Then, when it reaches the position 33, the frame 7 of the mold ("sand mold with built-in casting", the same applies hereinafter) M is removed, and the mold M is extruded into the primary cooling line 4 (comprised of a roller conveyor). Then, the empty frame 7 is appropriately conveyed toward the molding machines 11 and 21 by the conveyor 71. The emptied bogie shifts through the bogie line 3 toward the position 31 of the weight rest.

The mold M that has entered the primary cooling line 4 reaches the branch point 41 after the end of the line 4 while shifting the primary cooling line 4. At this time, since the information of the mold M shifted to the branch point 41 can be known by the control computer C, the mold M is automatically turned into any one of the cooling product transfer line 6 and the secondary cooling line 5 according to the information. line
You will select 6,5. That is, those having "necessity of using annealed time" as the information of the mold M are extruded to the secondary cooling line 5, and those having no such information are described in the cooling product transfer line. Extruded to 6. When the mold M is extruded to the secondary cooling line 5, the mold M after cooling is extruded from the secondary cooling line 5 to the primary cooling line 4 instead. Extruded.

The mold M cooled by the cooling lines 5 and 6 is conveyed to the cooling drum 8 by the cooling product transfer line 6.
At this time, since the information of the mold M that has reached just before the cooling drum 8 can be known by the control computer C, the “molding amount and mold sand” ratio of the mold M is automatically determined.
Thus, the amount of water sprayed on the cooling drum 8 is adjusted. For this reason, an optimal watering amount can be obtained. Then, in the cooling drum 8, the mold M is separated into a mold sand and a casting and discharged. Note that the cooling product transport line 6 is configured by a roller conveyor or the like.

In the above embodiment, immediately before the pouring position 32 on the mold transport line T, the branch point 41 of the primary cooling line, and the cooling drum 8, the control computer C obtains information on the mold M, and based on these information, Although the operation related to the mold M was performed, it is possible to obtain the information on the mold M shifted to any other address on the mold transport line T by the computer.

〔The invention's effect〕

A method of controlling a casting line according to the present invention is a method of controlling a casting line in which a mold is formed and sent to a casting line, and the mold passes through a specific operation process to manufacture a cast product. Is installed in the control computer, the information of the mold in the actual casting line is input in the order of molding, and that the mold has reached the required specific work process in the casting line, the molding of the mold Since the operation is confirmed by the number of shifts (the number of molds) and the work instruction is sent to the specific work process based on the information previously input to the control computer of the mold, information is displayed on the mold. Means for determining the mold at the position of the specific work step without providing any means. ), It is possible to perform a casting operation according to appropriate information in a casting line.

Therefore, if the casting line control method according to the present invention is used, a detecting means (sensor) for judging information on the mold immediately before a predetermined specific work step in the line.
Since there is no need to install the equipment, it is possible to prevent an increase in equipment costs and to simplify the management of the equipment.

[Brief description of the drawings]

The drawings show an embodiment of the casting line control method according to the present invention, and FIG. 1 is a schematic view in plan view. C: Control computer M: Mold

Claims (2)

(57) [Claims] 1. A method of controlling a casting line, wherein a mold is formed and sent to a casting line, and the casting mold passes through a specific operation step to manufacture a cast product. A control computer for controlling the specific operation step in the casting line Is installed in the control computer, and information of the mold in the actual casting line is input in the order of molding, and the fact that the mold has reached the required specific work process in the casting line is indicated by the number of molding shifts of the mold (mold A casting instruction is sent to the specific work process based on information input to the control computer of the mold, which is confirmed by the number of molds. 2. The casting line control method according to claim 1, wherein said specific operation step is a pouring step, an annealing step or a cooling step.