JPS6029402Y2 - Work discrimination device in pallet magazine - Google Patents

Description

[Detailed description of the invention] This invention is used in a pallet magazine used in machine tools to store pallets loaded with workpieces for automatic operation. This invention relates to a workpiece discriminating device in a pallet magazine that discriminates whether there is a workpiece or not.

Conventionally, in an automatic machine tool equipped with a pallet magazine, a workpiece is set to correspond to a predetermined pallet, and when the workpiece is delivered to a machining station, it is machined using a cutting program corresponding to the workpiece.

That is, a workpiece to be loaded on a predetermined pallet is set in advance, and the workpiece is sensed by detecting the pallet and processed using a predetermined cutting program.

For this reason, if a workpiece different from the preset workpiece is placed on a predetermined pallet, it cannot be processed with the predetermined cannibal program, resulting in trouble.

The present invention has been developed in view of the above circumstances, and its purpose is to provide a pallet magazine work discrimination device that can prevent machining operations using a cannibal program that differs from the work number.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall schematic explanatory diagram, in which the pallet magazine A has the endless chain 1 and the first to first O carts 21 to 2□.

The endless chain 1 is rotatably driven by a magazine drive device 3, and a truck number detector LS1 and workpiece number detectors 1 and S2 are provided at a predetermined loading/unloading position B.

Each cart 2 is provided with a pallet 4,
Thirty-one types of workpieces 5 are loaded on the pallet 4.

Each truck 2 is equipped with a dock D, which indicates the truck number, and each pallet 4 is equipped with a dock D2, which indicates the number of the workpieces loaded thereon.

Since various workpieces are loaded on the pallet 4, the dock D2 is replaced each time according to the workpiece number.

In FIG. 1, 6 is an NC device, 7 is a machine tool control circuit, and 8 is a machine tool, which are subjected to machining control based on a predetermined machining program.

FIG. 2 is a schematic explanatory diagram of the control circuit, and shows the control operation panel 10.
The work number setter SET□~5 corresponds to the trolley number.
ET1o is provided and connected to the logic circuit 11.

The logic circuit 11 is also connected to the workpiece number detector LS2, and outputs an output when the output of the workpiece number detector LS2 and the output (SETn) of the control operation panel 10 match. Relay 12 operated by output
operates to output to the NC device 6 and select a Canadian program corresponding to a predetermined work number.

FIG. 3 is a detailed explanatory diagram of the control circuit, and shows the control operation panel 10.
The work number setters SET□ to 5ETio have addresses 1 to 2, and the work number detector LS2 also has addresses 1 to 20, and when the signals are input to the logic circuit 11 and match, the logic element 13 Output to AND gate 14.

The truck number detector LS□ has 1 to 1@ ground and excites the first to tenth relays RD□ to RD1° provided in the relay circuit 12.

On the other hand, the output of each AND gate 14 is connected to the first to tenth circuits 151 to 152 of the relay circuit 12.
1 to 151o are contacts R'D1 to R' of the relay RD.
D1o and the first to tenth relays R1 to RIO are connected in series, respectively.

Further, the output signal of the work number detector D2 is output from the gate circuit 1.
6 to the NC device 6, and the gate circuit 16 is opened by a gate signal circuit including contacts R'□ to R'□0 of the relays R1 to RIO.

Next, the operation will be explained.

On the control panel 10, set the truck number setter for No. 5.

16. is set, the worker places No. on pallet 4.
, No. 6 work 5 is loaded on the tower, dock D2 which means No. 6 work 5 is attached to pallet 4, this pallet 4 is placed on No. 5 cart O, and this cart & reaches the loading/unloading position B. Then, the truck number setting device □ is activated by the dog D1, and the fifth relay R6 is activated.

On the other hand, the work number detector LS2 is operated by the dock D2 and outputs an output signal to the line 2J9'4J.

Furthermore, since the fifth truck number setting device SET has set r6 y, output signals are output to lines r2J and r4 y.

As a result, a signal is input to the AND gate 14 by the logic element 13, and the lines rIJ, rgY and 10J,
Since no signal is input to '20 yo, a signal is similarly input to the AND gate 14 by the logic element 13, so
Signals are inputted to the AND gate 14 from all lines, and the signal is output to the fifth circuit 1 of the relay circuit 12.

At this time, the fifth relay RD operates and its contact RD'5
is ON, so the fifth relay R5 operates.

This confirms that the preset workpiece number matches the workpiece number that actually arrived at the loading/unloading position.

Then, in response to this confirmation number, that is, the signal from the fifth relay R6, the contact R'5 is turned ON, the gate circuit 16 is opened, and the workpiece number detected by the workpiece number detector LS2 is N.
The processing operation is controlled by a predetermined cutting program.

As described above, the work number is set corresponding to the trolley 2 on the control operation panel 10, the dog D2 is provided on the pallet 4 according to the work number, and the trolley carrying the work pallet reaches the loading/unloading position B. When this happens, the trolley number and workpiece number are checked, and they are detected as they match the workpiece number set on the control panel 10, and the matching signal is used to trigger the NC device 6.
Since the control signal is sent to the machine, there is no possibility that if the operator places a workpiece on the pallet by mistake, the NC device 6 will not operate and the workpiece will be machined using a different program.

The present invention is as described above, and it is possible to detect when different workpieces are loaded on the pallet, and also prohibit the operation of the NC device 6, so that machining operations are not performed using a Canadian program that differs from the workpiece number. It can be prevented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic plan view of a pallet magazine, FIG. 2 is a schematic explanatory diagram of a control circuit, and FIG. 3 is a detailed explanatory diagram of the control circuit. 2 is a trolley, 4 is a pallet, 5 is a workpiece, 6 is an NC device,
LSl is a truck number detector, LS2 is a work number detector,
SET□~5ET1o are setting devices, magazine, and B is loading/unloading position. A is pallets

Claims (1)

[Scope of utility model registration request] A pallet magazine A that sequentially moves a plurality of carts 2 supporting pallets 4 on which workpieces 5 are loaded toward a loading/unloading position B, and a truck number detector LS1 for identifying the cart provided at the loading/unloading position B. , a work number detector LS2 for identifying the work provided at the loading/unloading position B, a setting device SET ~5ET1o for setting a work number corresponding to each cart, and a detection number of the work number detector 6°. Setting device SET
A logic circuit 11 outputs a signal when the setting signal of 5ETio matches, and a signal is output to the NC device 6 when the signal from the logic circuit 11 and the signal from the bogie number detector □ are output at the same time. 1. A work discrimination device for a pallet magazine, comprising means for outputting a signal to select a cannibal program according to a work number.