JPH02145245A - Control device for work/feeder - Google Patents

Abstract

PURPOSE:To improve productivity by storing a control program corresponding to a work, and constituting so as to carry out the control program by its selection based on the command fed from an overall panel. CONSTITUTION:When a work processed by a press is changed, an operator changes the die of the press and inputs the work number thereof to an overall panel 1 as well. The overall panel 1 then transmits to each control unit 3 because of being connected to each control unit 3 of press 21, 22 and work feeder 30. Each control unit 3 takes out the sequence and data corresponding to the received work number from each memory unit 31 for executing, writing in the memory function setting an execution program. When respective programs are written in the respective control units 3 of all machines 20a - 20n, and when the initial work is placed in the specified position and a start switch is pushed, the specified work is continuously carried out by the written program.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an automatic processing system consisting of an automatic processing machine, a work feeder that co-feeds workpieces to the processing machine, a control device that controls the work feeder, and a control panel. In particular, the present invention relates to an automatic processing system that can automatically change the setup of workpiece feeders.

[Prior Art] For example, actual operations in a conventional automatic processing system are as follows. That is, if the automatic processing system is a press line, a mold corresponding to the workpiece to be processed is mounted on the press, and an appropriate amount of push-in is set. The work feeder starts operation upon receiving a completion signal from the previous process, such as an automatic press, and the tip of the feeder moves to an appropriate position in the press and agitates the grip or vacuum suction device to collect the work that has been pressed. The workpiece held at the tip of the feeder is picked up, rotated, or immediately moved up and down without interfering with the press, and the workpiece is placed in the appropriate position in the mold of the press for the next process, and a signal indicating the completion of the work is sent to the press for the next process. To explain in detail the processing flow of an automatic processing system consisting of, for example, two presses, in Figure 4, 51 is an automatic workpiece conveyor such as a conveyor. Workpieces processed in the previous process are continuously transported to the automatic processing system. 52 is the first work feeder, which automatically takes the transported work and feeds it to the first work feeder.
53 is a control device for the first work feeder, and a signal indicating completion of insertion is sent to a control device 55 of the press 54, which is the next process. The control device 55 of the first press 54 determines that there is no abnormality in the position of the work, performs press processing, and sends a completion signal to the control device 57 of the second work feeder 56.

The second workpiece feeder 56 takes the processed workpiece from the first press, inserts it into the appropriate location of the second press 58, and sends a signal indicating completion of insertion to the controller 5 of the press 58 for the next process.
9, the control device 59 of the second press 58 determines that there is an abnormal blind in the position of the workpiece, performs press processing, and sends a completion signal to the control device 61 of the third workpiece feeder 60. A workpiece feeder 60 takes the processed workpiece from the second press 58 and transports it onto a workpiece unloading device 62 such as a conveyor. When the number of presses increases in an automatic press line, the above-mentioned flow is expanded in almost the same way. In the above-mentioned automatic machining system, when a workpiece to be machined is newly designed and machined for the first time, a program for sequence and positioning for machining and workpiece feet is created on a desk and then printed on magnetic tape or the like. After storing it in a storage medium that is easy to install and transport, it is installed in an actual automatic processing system for trial processing, the numerical data necessary for the program sequence and positioning is corrected, the contents of the storage medium are rewritten, and actual operation is performed. In other words, a method is used in which the movements of the work feeder are directly taught one by one on site, that is, they are memorized by teaching.The time chart in Figure 5 shows an example of the operation of the work feeder mentioned above in more detail. To explain this, at point A, the arm of the work feeder receives a start signal from the control device in the previous stage and first starts upward movement from the standby point.The position information of the 9th point is recorded as the lifting stop point, and the position detection device For example, when the number of pulses from the pulse encoder is counted and the deviation from the target position decreases, the ascending speed is decelerated, and when the contents of the pulse counter and the target position data match, the ascending stops and the turning motion begins.Similar to the ascending motion. When the turning point reaches the position, that is, the direction in which the work exists, the turning stops, the feeder arm is extended forward, and the tip is moved to the pre-recorded position by the same means as raising, that is, the tip is suitable for picking up the work. When it reaches two positions, it stops, lowers the arm, holds the workpiece by a vacuum suction device, for example, and when it is securely held, returns to the upward movement at point G. Using the same means as described above, it moves up to point T. When it reaches the upper limit, the ascent stops and the arm retracts to point C, then turns in the opposite direction to the next press position, and the arm comes out to the previous point N and descends to touch the workpiece at point L. Place it on the mold of the second press, rise to the W point, retract the arm to the force point, then turn to the Y point, that is, the standby point, and enter the standby.The standby point is not the same as the original A point, but is raised. In other words, it waits for the next command, and turns to the next command at the next command.In the above explanation, all movements were explained as a series, but if there is no risk of interference in the middle, for example, Simultaneous operations such as turning and extending and retracting the arms are performed to save travel time.Also, if precision is not required in specifying the position, multiple dogs are installed. There is also a method in which the position of the dog is determined in advance for each workpiece and a predetermined dog is selected when changing the program.In each of the above-mentioned conventional automatic machines, the control device for each workpiece feeder is Since the machine has the ability to store only the work contents of one process, the program in the storage device is rewritten using a storage medium such as a magnetic tape each time the workpiece to be processed changes.

[Problem to be Solved by the Invention 1] However, in the above conventional automatic processing system, the work program to be executed rewrites the contents of the storage device in the control device of the work feeder every time the workpiece to be processed is changed. There was a need. Therefore, when using a large number of feeders and workpiece feeders as an automatic processing system, not only is it wasteful that it takes a lot of time to change setups, but also a program different from the one for the target workpiece may be installed by mistake. Therefore, there is a problem in that the work feeder malfunctions and losses are incurred.

The present invention has focused on the above-mentioned conventional problems, and in particular eliminates the need to change the work program every time the workpiece to be machined is changed, thereby eliminating the need for a large amount of time for changeovers, and by using a program different from that of the target workpiece. The purpose of the present invention is to provide a work feeder control device that is safe and highly productive and prevents incorrect installation of work feeders.

[Means for Solving the Problems] In order to achieve the above object, a work feeder ivI control device according to the present invention includes a processing machine, a work feeder that supplies workpieces to the processing machine, and a control device that controls the feeder. To provide a control device for a work feeder, in an automatic processing system comprising a control panel and a control panel, which stores a control program corresponding to a workpiece, and selects and executes the control program based on commands from the control panel. I did it like that.

[Operation] According to the above configuration, the control program for the workpiece feeder can be automatically changed in one action every time the workpiece is changed.
Saves time and eliminates incorrect programs.
It is possible to provide a safe and highly productive work/feeder control device that does not cause any trouble when placed in a feeder.

[Embodiments] Hereinafter, embodiments of the work feeder control device according to the present invention will be described in detail with reference to the drawings.

Fig. 1 shows a configuration diagram of a control device based on the present invention in an automatic processing system, Fig. 2 shows a configuration diagram of the automatic processing system, and Fig. 3 shows element functions within the control device. There is. In FIGS. 1, 2, and 3, reference numeral 1 denotes a control panel for the control device of the automatic processing system, and the automatic processing system 2
0(a-n). Automatic processing system 20
There are two square presses 21, 22, which are automatic processing machines. A work feeder 30 is included, a control device 3 is connected to the work feeder 30, and a storage device 31 is included in the control device 3. Summary! ll has a switch button 11, and the input from the switch button 11 is input to the input circuit 1.
The output of the computer 13 is connected to the control device 3 of each work feeder 30 and the press 21, 22, etc. via a signal line 5 connected from an output circuit 14. It is connected to a control device that is omitted in the drawing. Inside the $1111 device 3 of the work feeder, the signal line 5 is connected to an external signal input circuit 32 and then inputted via a buffer circuit 33 to a basic control function, for example a computer 34. The computer 34 is connected to a storage device 31 which stores not only the control function of the work feeder but also the control program and necessary data which are the object of the present invention. .22 control unit.

Next, the operation in the embodiment of the present invention will be explained. Figure 1 shows the configuration of the control device for the automatic processing line.
A signal circuit for sending command signals to the control device 3 of each work feeder and the control devices of the presses 21 and 22 is connected from the general panel l, and the control device 3 of the work feeder
It is shown that a storage device 31 according to the present invention is built inside.

In an automatic press line, when a workpiece to be processed is newly designed and processed, a program for processing and workpiece feeding is created and positioning is performed. A mold corresponding to the workpiece to be machined is installed, and an appropriate push-in amount is set. Press 21 for work feeder
After receiving a processing completion signal from The workpiece held at the tip of the feeder without interfering with any press is transferred to the press 22.
When the press 22 is placed in an appropriate position in the mold, a start signal indicating the completion of the work is sent to the press 22. These series of operation programs and movement positions can be programmed in advance on a desk and stored in the storage circuit of the control device, or necessary sequences or positioning can be determined by direct teaching and stored in the storage circuit of the control device. Generally, multiple workpieces are processed continuously on one press line, and
- Workpieces that have been processed multiple times are not processed into the same product twice, but are produced over and over again. For this purpose, the sequence and positioning program and data for the workpiece once created are stored in the storage device of the control device, and by inputting the workpiece number into the overall control panel, a program is created to automatically process the workpiece with that number. Data can be retrieved from the I+ system and the workpiece can be processed and fed without the need for one person to do so. That is, when the work to be processed by the press is changed, the operator changes the press mold and inputs the work number into the summary board, and the summary board displays press 21, press 22, and so on. Since it is connected to each control device of the work feeder 30, the work number is transmitted to each control device. Each control device retrieves the sequence and data corresponding to the received work number from the storage device and puts it into the execution block.
Each program is written to the memory function that sets the cogram, and the respective programs are written to the control devices of all machines, and when the first workpiece is placed in the predetermined position and the start switch is pressed, the predetermined work is performed according to the written program. Execute continuously. The flow of signals will be explained in detail with reference to FIG. Together with the input signal, a control element, e.g. computer 13
is converted into a signal suitable for the input circuit. Commands for the control devices of each work feeder and press are output from the output circuit 14 to the signal line 5 at appropriate timings through processing by a program in the computer. When the input circuit 32 of the IT4 control device 3 of the work feeder receives a command signal sent from the control panel to itself, the input circuit 32 sends the command signal to the control element, such as a computer, through a buffer circuit 33 together with other input signals that are excluded from this description. 34
The signal is converted into an appropriate signal for the input circuit and the input timing is adjusted. When the control element, for example the computer 34, learns the number of the next workpiece to be machined from the input command,
The program for that work number is retrieved from the storage device 31, and the actual program is executed by inputting the next start signal. As the program is executed, output commands are sequentially sent from the output circuit 35 to the workpiece feeder 30, position information is sent back from the workpiece feeder, and the program steps are advanced.

The general board manages a plurality of press lines similar to the above-mentioned press line 20a, and performs the same command and control as above for the other press lines, 20a, 20b,
...It is possible to command an appropriate program number even for a large number of continuous processing lines, such as 2On. In addition, by storing not only the work number but the program and data itself on the summary board, it is possible to
It is possible to process any workpiece with any press line up to 0n, and the press lines 20a, 20b,
20c and a plurality of press lines can be connected in tandem to form and control one continuous press line horizontally.

[Effects of the Invention] As explained above, according to the above configuration of the present invention, the control program for the workpiece feeder can be changed in one action every time the workpiece is changed, which saves time and prevents incorrect programming. It is possible to obtain the excellent effect of providing a safe and highly productive work feeder II 1n device that does not cause any trouble when placed in the work feeder9.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an automatic control device according to an embodiment of the present invention. FIG. 2 is a configuration diagram of an automatic processing line according to an embodiment of the present invention. Fig. 3 is a detailed diagram of the control panel and work feeder control device according to the present invention (according to the embodiment). Fig. 4 is a drawing of the processing line (press line > 1). Fig. 5121 is the time of the work feeder. Chart Diagram 9 1...Overview panel 3...Control device 5...Signal line 11...Switch button] 2. ... Input circuit 13 ... $ Control element (computer) 14 ...
...Output circuit 20a...Unit press processing line 2On...Unit press processing line 3...Work feeder control, III device 30...Work feeder mechanical section 21...
・Automatic processing machine (press) 22...Automatic processing machine (press) 31...Storage/device 32...Input circuit 33...B...I Fa 34... System (1 element (computer) 35...
...Output circuit 51...Work loading machine (conveyor) 52...
... Work feeder mechanical section 53 ... Work feeder control device 54 ... Automatic press 55 ... Automatic press control device 56 ... Work feeder Mechanical part 57...
... Work feeder control device 58 ... Automatic press 59 ... Automatic 7-less control device

Claims (1)

[Claims] Automatic processing machines and the workpieces that supply the workpieces to the processing machines.
In an automatic processing system consisting of a feeder, a control device that controls the workpiece/feeder, and a control panel that manages the entire system, a control program corresponding to the workpiece is stored, and the control program is selected and executed based on commands from the control panel. A work feeder control device characterized by: