JPH06238551A - Production management system for machine tool - Google Patents

Abstract

PURPOSE:To improve the accommodation efficiency by loading the finished articles on the succeeding pallet in the next work, even if the pallet which is not full of the articles is generated, in a production management system in which the finished articles obtained by carrying out the drilling work and bending work for a work by a machine tool and the pallet on which a plurality of finished articles are loaded is accommodated into an automatic warehouse. CONSTITUTION:A production management system is constituted so that a plurality of finished articles W are accommodated on a pallet 10, and the information for the products accommodated on the pallet and the accommodation position information of the pallet 10 are managed by a host computer. On the restart of operation from the interruption of the operation on a machine tool side, the pallet 10 which is not full of the finished articles is delivered from an automatic warehouse, and the pallet 10 is shifted to the finished article loading position in succession according to the information supplied from the automatic warehouse.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, after carrying out sheet metal working such as punching, cutting and bending of a work by a machine tool,
The present invention relates to a production management system in which a finished product is automatically stored in a predetermined position of an automatic warehouse, and when a work is interrupted and restarted, a finished product is stored and stored in the automatic warehouse.

[0002]

2. Description of the Related Art Conventionally, a desired material is carried into a machine tool such as a punch press or a bending machine by a carry-in device, and a predetermined hole is punched or a predetermined position is bent in accordance with data input to a control device to obtain a finished product. It is well known that this finished product is placed on multiple pallets, and when a set amount of finished products is placed on the pallet, it is judged to be full and stored at a predetermined position in an automated warehouse by a conveyor. There is.

[0003]

As described above, workpieces are machined one after another by a machine tool, and finished products are conveyed one after another onto a pallet. However, scheduled work is completed or some machines are broken. If the work is interrupted due to such reasons, since there is a principle that the pallet is returned to the automatic warehouse, the pallet is interrupted without being fully loaded on the pallet and is stored in the automatic warehouse as a pallet with a fractional load. However, in the past, there was no device to count or determine how many pieces were placed on a fractional pallet, and the operator searched for a pallet in the middle that was not full and returned to the loading conveyor to check the number of stored items and re-input. ,
The work was restarted and the space on the next pallet was loaded. If you interrupt in the middle like this, it will take time and time when you start next time, so
The present invention seeks to enable automatic determination and restart of work quickly.

[0004]

The problems to be solved by the present invention are as described above. To solve the problems, a plurality of finished products are stored on one pallet, and when the pallets are fully loaded, and A system that stores pallets in an automated warehouse at the end of line operation and manages product information stored on the pallets and storage location information of the pallets in the automated warehouse. Then, the pallet is moved to the continuous finished product placement position based on the information from the automated warehouse.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the technique of the present invention shown in the drawings will be described. FIG. 1 is an overall plan view of a production system according to the present invention. To briefly describe a series of work steps, a pallet having a processing material placed on the left side is conveyed by a carry-in device 1 and a turret punch press 2 is carried in. Work holder 2c provided on a slider 2b that can be moved to the front, rear, left and right of the turret punch press 2 by being positioned on the side.
The workpiece is chucked at, and punched, punched, and cut, and when the processing is completed, the workpiece is moved to the outlet side auxiliary table 2d and the work is released from the work holder 2c.

Next, the work is sent from the relay conveyor 4 to the reversing machine 3, the work is turned upside down and sent to the folding machine 5. This inside-out is to make the side with burrs inside after bending work inward. Then, the folding machine 5 bends a predetermined portion along the data at a predetermined angle to obtain a finished product.
The finished product is stored in the rack 12 of the automatic warehouse A from the carry-out conveyor 6 through the following transport device.

That is, FIG. 2 is a plan view of the discharge conveyor, and FIG.
Is a side view, FIG. 4 is a side view of the pallet, and FIG. 5 is a side view of the lower part of the pallet on the opposite side. A tilt conveyor 6a is provided on the terminal side of the carry-out conveyor 6 as shown in FIG. 6a has a roller, and when tilted, the finished product W rolls down on the roller and slides down on a standing conveyor 7 arranged in front of the tilt conveyor 6a. The upright conveyor 7 is an upright shape in which rollers 7a, 7a ... Arranged in a comb shape can be rotated by approximately 90 degrees, and a work detection is made at the corner of the upright conveyor 7 on the traveling direction side (right front). Sensor 13
Is provided, and a pusher 14 is provided at the opposite corner, and the finished product W is conveyed to the erection conveyor 7 by the tilt of the tilt conveyor 6a of the carry-out conveyor 6, and when the finished product detection sensor 13 is turned on, the erected product is erected. The conveyor 7 is rotated and gets up, and the finished product W is in an upright state. Then, the pusher 14 provided at the left end moves toward the advancing direction, pushes out the finished product W to the stacking conveyor 9 side, and conveys it onto the pallet 10.

As shown in FIG. 4 and FIG. 5, the pallet 10 has partition plates 10b, 10b, ... protruding upward at equal intervals in a comb shape on a base 10a. The finished product W is inserted into the gap between 10b. As shown in FIG. 5, the slits 10c, 10c, 10c
.. are arranged, while facing the slit 10c,
An optical sensor 15 is provided at a position on the extension of the pusher 14, and the optical sensor 15 is a reflection type slit 10
c is detected to detect in which gap the finished product is inserted. However, although the slit 10c and the optical sensor 15 detect the gap (the insertion position of the finished product), it is not limited to this means, and the gap is detected by the protrusion and the switch, the magnetism and the proximity sensor, the slit and the ultrasonic sensor, and the like. It can also be configured to do so.

The pallet 10 is placed on a trolley 9a of the loading conveyor 9, the trolley 9a travels on a rail 9b, and when the finished product W is placed on the pallet 10, the pallet 10 is pitched according to the gap. When the pallet 10 is received by the stacker crane 11 as shown in FIG. 1, after being fed and fully loaded, the stacker crane 11 arranged at the end of the stacking conveyor 9 is conveyed at a high speed. The storage position is determined by the product information from the host computer 20, which is transported to a predetermined section of the rack 12 and stored, and an empty pallet is taken out from the shelf of another rack 12 and sent to the stacking conveyor 9, and this step Is repeated and the finished products are stored one after another.

Control panels 21 to 27 are provided on the carry-in device 1, the turret punch press 2, the reversing machine 3 and the relay conveyor 4, the folding machine 5, the carry-out conveyor, the standing conveyor and the loading conveyor 9, and the automatic warehouse A, respectively. Drive motors, sensors, etc. are connected to each control panel to control each, and each control panel is connected to a host computer as shown in the control block diagram in FIG. I am trying to store it in a warehouse. The present invention stores the pallet 10 in the automatic warehouse A even if the pallet 10 is not full when the work time ends or is interrupted. Therefore, when the work is resumed, the pallet that is not full is taken out and completed from the continuation. Items are loaded.

That is, the trolley 9a of the loading conveyor 9 is detected by the sensor 15 so as to stop at the loading position where the gap between the pusher 14 and the pallet 10 is aligned, and is controlled by the control panel, and the drive motor is controlled by the slit 10c. Stop at position. At this stop position, the passage of the slit is counted, and it is possible to know in which gap the slit is inserted. This data is input to the host computer 20. For example, as shown in FIG. 5, when the work is interrupted when the finished product W is inserted into the third pallet 10, the gap number, the pallet and the product number (information) are stored in the memory of the control panel of the host computer 20. The pallet is stored in a predetermined shelf of the rack 12 under the control of the control panel 21. When the work is resumed, the product information is sent to the control panel 21 of the automatic warehouse A by the control signal from the host host computer 20.
The stacker crane 11 picks up an unloaded pallet that matches the product from the rack 12, puts it on the loading conveyor 9, conveys it to the standing conveyor 7, and loads position data (3rd position) on which the finished product is already loaded on the pallet 10. ) Is sent from the host computer 20 to the control panel 27 of the loading conveyor 9, and the control panel 27 moves the pitch so that the fourth empty gap next to the finished product is in a position facing the pusher 14. Make it stand by. When the work is processed and the finished product W is conveyed, the finished product W is inserted into the fourth gap of the pallet 10 by the pusher 14, and the work is performed in the same manner as before the interruption.

[0012]

Since the present invention is constructed as described above, it has the following effects. That is, when additional loading of finished products on a pallet that is not full due to work interruption,
The storage information of the pallet, which is originally managed by the host computer 20, can be used as it is as the information of the loading conveyor on the machine tool side, and the loading position (pallet stop position) of the additional product to be loaded is determined by the information. Therefore, the storage efficiency of the automatic warehouse with a limited number of shelves could be improved with simple control.

[Brief description of drawings]

FIG. 1 is an overall plan view of a production system according to the present invention.

FIG. 2 is a plan view of a discharge conveyor.

FIG. 3 is a side view of the same.

FIG. 4 is a side view of a pallet.

FIG. 5 is a side view of the lower portion of the pallet.

FIG. 6 is a control block diagram.

[Explanation of symbols]

 A Automatic warehouse 2 Turret punch press 5 Bending machine 9 Loading conveyor 10 Pallet 11 Rack 15 Sensor 20 Host computer 21 Automatic warehouse control panel

Claims (1)

[Claims] 1. A plurality of finished products are stored on one pallet, and the pallet is stored in an automatic warehouse when the pallet is fully loaded and when the line operation is completed, and the product information stored on the pallet and the storage position information of the pallet are stored. Is a system for managing
A production control system for machine tools characterized by unloading fractional pallets and moving them to a continuous finished product placement position based on information from an automated warehouse.