JPH067880Y2 - Transport control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a transfer control device that transfers a workpiece between a processing station and a work station by a transfer device to process the workpiece.

<Prior Art> Conventionally, a transfer control device is provided with a numerically controlled machine tool having different processing and a cleaning device (working device) for performing work other than machining at each station, and a workpiece sequentially operates at each station. It is a machine in which a series of processing and processing other than processing such as cleaning are completed as it is transported.

<Problems to be solved by the device> However, when the machining process of the workpiece is completed by the numerically controlled machine tool having a different machining process and the cleaning device then cleans the workpiece, a failure occurs in the cleaning device. If the work W is not carried out from the cleaning device, the work W will not be carried out from each station because the work will be full in the transfer device and the buffer station, and the program assigned to each station will be executed. However, there was a problem that all stations would stop.

<Means for Solving Problems> FIG. 1 is an overall configuration diagram for clarifying the present invention.

The present invention provides a computer 400 for controlling the machine tools and working devices of each processing station 100 and 200, and a transfer device 300, and a failure level at the time of failure of a working device provided in the work station 200 so that the failure can be recovered in a short period of time. The level setting means 500 that can be set to be mild in case of a long-term failure and the level set in the level setting means 500 is input to the computer, and if the level is mild, the machining is performed. Transfer route changing means 600 for temporarily waiting for a workpiece to be transferred from the station 100 to the work station 200 and changing the transfer route so as to transfer the workpiece from the processing station 100 to the loading station when the level is severe. When the level is severe, the transfer route changing means It is characterized in that an auxiliary work station for processing a workpiece conveyed to the ring station in place of the work stations provided in the loading station.

<Operation> The transport path of the transport device 300 is changed according to the failure level of the work device of the work station 200.

When the level of failure of the cleaning device provided in the work station 200 is severe, the work path is changed so that the work is directly conveyed to the loading station without passing through the work station 200 and the auxiliary work station provided in the loading station. So that cleaning can be performed.
Further, when the failure level is low, the workpieces are transferred to the buffer station and temporarily stored therein, and after the failure of the work station 200 is recovered, the workpieces are transferred in order from the buffer station to the work station 200 to perform a predetermined work. Try to restart.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diaphragm showing the configuration of the transfer control device.

1 is a host computer that controls the entire machine,
The control program is stored in the magnetic disk device 3.

Numerals 41 and 42 are transfer devices composed of a self-propelled carriage that moves on the transfer line 4, and these transfer devices 41 and 42 place the workpiece W from the loading station 5 to process stations ST1, ST2, work stations ST.
3 is carried to the unloading station 6, and the work W from the buffer station 7 for temporarily storing the work W is carried out. W is placed and transported to the work station ST3.

The transport sequence of these transport devices 41, 42 is controlled by a sequence controller (not shown) which operates by inputting a transport start signal of one station pitch from the host computer 1.

At the processing stations ST1 and ST2, a machine tool M
T1 and MT2 are provided, and each machine tool is controlled by numerical control devices NC1 and NC2 and sequence controllers PC1 and PC2 connected thereto.

The work station ST3 is provided with a cleaning device WB1 and a sequence controller PC3 for causing the cleaning device WB1 to execute a series of cleaning operations.
In addition, the work station ST3 is a work station ST.
Abnormality display lamp 10 for notifying the operator when 3 is abnormal
Is provided.

The WB 2 is a cleaning device provided in the loading station 5.

Further, the numerical control devices NC1 and NC2 respectively input and store machining programs PG1 and PG2 at each station from the host computer 1, and are instructed by inputting control signals from the sequence controllers PC1 to PC3. It is configured to execute programs in a commanded order.

Reference numeral 2 is an interface for exchanging data between the numerical control devices NC1 and NC2 and the host computer 1.

As shown in FIG. 3, the work station ST3 is provided with a switch S for the operator to set the level of failure when the cleaning device WB1 fails. Two failure levels of severe L1 and mild L2 can be set in the switch S. The output of the switch S is sent via the sequence controller PC3 and a failure signal corresponding to the failure level is sent via the interface 2. Input to the host computer 1. Here, selecting the failure level as severe L1 means that the cleaning device WB1 has a long-term failure, and selecting the failure level as mild L2 means that the cleaning device WB1 has a short-term failure. Say when recovering between.

Next, the processing station ST1 →
The operation of the host computer 1 when the cleaning device WB1 fails when the work W is transferred in the order of the processing station ST2 → the work station ST3 → the loading station 5 and is processed and cleaned will be described with reference to the flowchart of FIG. .

The flow chart of FIG. 4 is executed when the processing station ST2, which is immediately before the work station ST3 for cleaning, outputs a workpiece W carry-out request signal to the host computer 1.

In step 700, it is determined whether the work W to be transported to the cleaning device WB1 is in the buffer station 7. This determination is a determination for preferentially transporting the workpiece W transported to the buffer station 7 to the cleaning device WB1 by the processing of step 706 described later. When this determination is absent, the process proceeds to the next step 701, and the determination of the flag indicating the operation state of the switch S that sets the failure level of the cleaning device WB1 is performed. This operating state is, for example,
Since the work station ST3 cannot be carried out, the sequence controller PC3 itself determines the failure, blinks the lamp 10 to notify the operator of the failure, and the operator looks at the cleaning device to determine the failure state. As a result, It is determined whether or not the switch S for setting the level of failure has been operated and the flag indicating the failure state has changed. If this determination is normal, the process moves to the next step 702. This step 70
In step 1, it is determined whether or not a loading request signal for the work W is output from the work station ST3 to the host computer 1. If this determination is a carry-in request signal, step 7
In 04, the workpiece W is loaded into the cleaning device WB1 of the work station ST3, cleaning is started in step 705, and the processing of this flow is ended.

If the determination in step 702 is that there is no carry-in request signal, the process proceeds to step 706 and this process is terminated.

If there is a determination in step 700, step 7
In step 07, the workpiece W conveyed to the buffer station 7 is conveyed to the work station ST3, and then to step 704, cleaning is performed.

When it is determined that the failure occurs in step 701, the process proceeds to step 703, and the level of the switch S for which the failure level is set is determined. When this determination is determined to be mild, the process proceeds to step 708, the workpiece W is transported to the buffer station 7, and the process of this flow is ended. When the determination in step 703 is determined to be severe, the process proceeds to step 709, the loading of the workpiece W to the work station ST3 is stopped, and the work W is directly transported from the processing station ST2 to the loading station 5 and is then operated by the operator. The work W is cleaned by the cleaning device WB2 provided in the loading station 5.

By performing the above steps 700 to 709, it is possible to prevent all stations from stopping even if the cleaning device WB1 fails.

Further, in this embodiment, the example in which the worker cleans the workpiece W conveyed to the loading station 5 by using the cleaning device WB2 when the cleaning device WB1 fails is described. When the workpiece W is transferred to the loading station 5, the workpiece W is automatically washed by the cleaning device WB.
Alternatively, the workpiece W may be loaded into the cleaning machine 2 and the workpiece W may be cleaned.

In this embodiment, the machining program is transferred from the host computer 1 to each of the machining stations ST1 and ST2.
It is also possible to set a machining program for each of the two stations, transmit machining information from each of the machining stations ST1 and ST2 to the carrier device 41, and fetch the information of each of the machining stations ST1 and ST2 from the carrier device 41 to the host computer 1.

<Effect of the Invention> As described above, in the present invention, the level setting means for setting the level of failure when the work device provided in the work station for work other than machining fails and the level setting means The transfer path changing means for changing the transfer path of the work according to the set level, and the auxiliary work station for processing the work transferred to the loading station by the transfer path change means due to a serious failure level Since it is installed in the station, when the work station fails, the workpiece transferred to the loading station is processed in the auxiliary station, so the finished workpiece does not stay for a long period of time and the entire machine can be stopped. There is an advantage that can be prevented.

[Brief description of drawings]

FIG. 1 is a block diagram for clarifying the present invention, FIG. 2 is an overall configuration diagram of the present invention, FIG. 3 is a diagram for explaining a switch for setting a failure level, and FIG. 4 is a host computer. It is a figure for demonstrating operation. 1 ... Host computer, 3 ... Magnetic disk device,
5 ... Loading station, 7 ... Buffer station, 41, 42 ... Conveying device, ST1, ST2 ...
… Processing station, ST3 …… Working station.

Claims (1)

[Scope of utility model registration request] 1. A machining station in which a numerically controlled machine tool is installed, a work station in which a working device such as a cleaning device for cleaning a work completed by the machining station is installed, and a machining station. And a transfer device for sequentially transferring the work to the work station, a loading station for transferring the work completed at the processing station and the work station by the transfer device, and a station for each of these stations. In a transfer control device configured to execute a program assigned to a computer, a computer for controlling a machine tool and a working device of each processing station, and a transfer device, and a level of failure when the working device fails in the working station. If the failure can be recovered in a short period of time, The level setting means that can be set to the seriousness in case of a period failure and the level set in the level setting means are input to the computer, and when the level is mild, the level is transferred from the processing station to the work station. And a transfer path changing means for changing the transfer path so as to transfer the work from the processing station to the loading station when the level is severe and the level is severe, and the transfer path changing means as the level being severe. In the transfer control device, an auxiliary work station for processing the workpiece transferred to the loading station in place of the work station is provided in the loading station.