JPH03258422A - Communication device for turret punch press - Google Patents

Abstract

PURPOSE:To simplify the controlling system by connecting the electricity transmission and communication reception unit and the electricity receiving and the communication transmission unit with the communicating means of non contact type always in communication available state on the all rotary position of the turret. CONSTITUTION:The electricity transmission and communication reception unit 31 supplies the power to the frame part to fix the rotary shaft 5 of the turret, and also receives the detected signal of the sensor Se. The electricity reception and communication reception unit 29 converts the detected signal of each sensor Se connected to many sensors Se on the turret 3 at a part of the turret 3 to the digital signal which is suitable for communication and sends, and also properly storages the electric power supplied from the electricity transmission and communication reception unit 31 and supplies it to the related equipment. The electricity transmission and communication reception unit 31 is connected with the electricity reception and transmission unit 29 by the communicating means 32-1 to 32-3 of non contact system which is always communicable at the all rotary position of the turret 3. In such a way, the increase of equipment requiring the power for a lamps, etc., can be dealt with.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a communication device for a turret punch press.

(Prior art) In a turret punch press, it is possible to attach multiple dies to the upper and lower turrets equipped with stations, and any dies (punch and die) can be attached to each station. The mold angle (arrangement angle) may be set arbitrarily. The reason why the angle can be changed freely is that, for example, a rectangular mold can be used as a horizontally long mold at an angle of 0°, and can be used as a vertically long mold at an angle of 90''.

Therefore, conventionally, when changing the mold of a turret punch press, the operator has to check the insertion station, the placement angle, and check the placement angle to make sure that the punch and die do not cross each other. was doing work.

However, since the conventional confirmation work as described above involves visual confirmation by the operator, it is not possible to completely prevent mold placement errors, and there is a risk of product defects or damage to the mold.

In addition, it was necessary to spend a lot of time on these confirmation tasks.

Therefore, the inventors of the present invention have recently developed a method for automatically detecting the mounting angle of molds, which can be freely mounted on the station at any angle, to improve work efficiency, and to prevent product defects and We are proposing ways to prevent mold damage.

(Problems to be Solved by the Invention) However, when the sensor is provided on the turret as described above, there is a problem in how to configure communication means with the control device on the fixed frame side.

That is, slip rings cannot process a large number of sensor signals and have low reliability against oil and dust contamination.

In addition, when configuring the transmitter/receiver unit in a 1:1 non-contact configuration, how to supply power to the turret side, and since data reception will be intermittent, the reception timing should be determined in relation to turret control. The question of what to do remains.

Furthermore, considering future developments, it is conceivable that the turret station will be equipped with a sensor for mold identification, and that various lamps and indicators will be installed on the turret side, so a means to supply a relatively large amount of power will be needed. It becomes necessary.

Therefore, the present invention provides a turret punch press that can supply sufficient power to various power-required components and receive sensor signals at desired times when the turret is equipped with a large number of sensors and lamps that require power. The purpose is to provide communication equipment.

[Structure of the Invention] Means for Solving Cap 1) The present invention for solving the above problems provides a station for mounting a large number of molds on a rotatable turret, and a station for mounting any mold. After installing the mold, NC
In a communication device for a turret punch press that performs a predetermined process with a predetermined die while indexing the station to a predetermined processing position, the die attachment specified in the program is performed at multiple stations or all of the stations. A sensor is installed at the station to identify the mold, or to detect the installation status of the mold, such as the presence or absence of the mold and the angle at which it is placed. Power is supplied to the frame portion that fixes the rotating shaft of the turret, and the detection signal of the sensor is installed at the station. A power transmitting/receiving unit is provided in a part of the turret, and is connected to a number of sensors on the turret, converting the detection signal of each sensor into a digital signal suitable for communication, transmitting it, and supplying it from the power transmitting/receiving unit. The power receiving/receiving system stores the generated power as appropriate and supplies it to related equipment.
The power transmitting/receiving device is characterized in that a transmitting unit is provided, and the power transmitting/receiving unit and the power receiving/transmitting unit are connected by a non-contact communication means that can communicate at all times at all rotational positions of the turret. The antenna of the unit is provided on the side of the frame that fixes the rotation axis of the turret, facing the rotation axis, and the antenna of the power reception/transmission unit is installed at the center of the turret or around the rotation axis of the power transmission/reception unit. It is characterized by being equipped so that it can receive power at all times.

Further, on the turret there is a device associated with the sensor;
Alternatively, an unrelated lamp or indicator is provided, and the power received by the power receiving/transmitting unit is also supplied to the lamp or indicator.

(Function) The communication device for the turret punch press of the present invention transmits and receives power, and transmits and receives power at required times between the power transmission/reception unit and the power reception/transmission unit provided on the fixed frame and the turret, respectively. Therefore, the power transmitting/receiving unit is placed on the fixed frame side.
A power receiving/transmitting unit is installed in a part of the turret in 1/1,
In the case of radio wave communication between both units, communication may not be possible depending on the turret rotation state, and timing problems arise regarding power transmission and reception. It can receive and transmit power, and can operate independently from the press control device.
The control method becomes simple.

Furthermore, since power can be supplied at all times or at any time regardless of the rotational state of the turret, it is possible to cope with the addition of equipment that requires power, such as lamps.

(Example) The present invention will be explained in detail below.

First, the structure of a turret punch press will be described. As shown in FIG. 3, a turret punch press 1 has a so-called bridge-type frame 2, and upper and lower turrets 3 and 4 are provided within this frame 2.

The upper and lower turrets 3.4 are rotatable in a horizontal plane around an axis 5, and each of the turrets 3, 4, as shown in an enlarged plan view in FIG. 5 (IJ).

■ indicates the station number, and J indicates station characteristics such as mold size and presence or absence of an auto index mechanism.

The molds mounted on each mold mounting station 5 (IJ) are indexed directly below the ram 6 and perform predetermined press working on the workpiece W guided between both turrets 3.4. The work W is held by a clamp device 7 and guided on a table 8.

In the turret punch press 1 having the above-mentioned configuration, the mold replacement work is performed at one corner slightly to the left of the center in FIG. 3.

The mold exchange method is to specify station number 5 (IJ) on the NC operation panel located away from the exchange position, rotate the turret 3.4 and index the station to the exchange position, or
Alternatively, you can manually index the desired station by operating a two-handed button at the exchange position.

Then, when the required station is near, the operator pulls out the unnecessary mold from that station and inserts the required mold here in its place.

At this time, it is necessary to confirm whether the mold to be replaced has the specified shape and dimensions, and whether both the punch and die are attached at a predetermined angle. Otherwise, defective products or accidents such as mold breakage may occur.

Note that there are usually hundreds of types of molds, and some of them have the same shape but differ only in so-called clearance, so care must be taken. In other words, for example, even if the punch is round 10φ, the corresponding die is 10.1φ, 1
The clearance, which is the difference between the punch diameter and the die diameter, may vary depending on the plate thickness, such as 0.2φ.

FIG. 5 is an explanatory diagram showing the structure for attaching the punch and die to the station.

In the figure, two punches 9, 10 and corresponding dies 11, 12 are shown attached to the upper and lower turrets 3, 4 of this example. However, the punch 9 and die 11 are shown in the state before being inserted into the station, and the punch 10 and die 12 located inside of this are shown in the state after insertion.

The punches 9 and 1o have a flange 1 on the upper part of the punch body 13.
4, and a bunch head 16 is provided on this flange 14 via a urethane strip spring 15.

The station of the turret 3 where the punches 9, 10 are to be attached has a built-in lifter 17 that comes into contact with the bottom surface of the flange 14 of the punch 9, 10 and lifts up the main body 13 of the punch 9, 10 with a force weaker than the spring 15. There is. Also,
A pin hole 19 into which a positioning pin 18 is fitted is provided on the side surface of the turret 3.

On the other hand, the dies 11, 12 are inserted into the die station via the die holder 20.

Therefore, by inserting the pin 18 into the pin hole 19, the turret 3 (4) can be positioned.

In addition, by using the inserted punch 10 and die 12 to push down the head 16 of the punch 10 using the striker 6 shown in FIG. After the head of the die 12 is pressed down, the slit top spring 15 is pushed down with a strong force, thereby making it possible to perform press working such as drilling. After drilling, the mold body 1-3 is lifted with the workpiece held down by the lifter 17, so that the tip of the punch can be easily removed from the punched hole of the workpiece.

The punch 9. ]0, a magnet Mg serving as a dog is embedded in one position of the punch body 13. Also die 11. ．． A magnet Mg serving as a dog is also embedded in the lower flange portion of 12.

Further, the magnet Mg is inserted into the bottom surface of the bunch insertion hole of the turret 3 with the punch 9.10 inserted.
A ring-shaped sensor Se for detecting is provided. Similarly, a sensor Se for detecting the magnet Mg embedded in the dies 11, 1.2 is also provided at the bottom of the die insertion hole of the lower turret 4.

The specific structure of the sensor Se is shown in FIG. Although the figure shows an example of a sensor that detects the magnet Mg embedded in the punch body 13, the same applies to the sensor Se that detects the magnet Mg embedded in the die 11 and 12.

In the figure, the sensor Se includes a conductive ring 21 in which a conductive film 21b is applied to the outer surface of a flexible rubber magnet 21a, and a resistive material 22b coated on the inner periphery of a non-conductive material 22a on the outer periphery of this ring. The resistance ring 22 has a large number of projecting terminals 22c projecting from the conductive film 21b from the resistance ring 22b. An elastic material 23 is interposed between the conductive ring 21 and the resistance ring 22.

Both the conductive ring 21 and the resistance ring 22 are partially (electrically) cut off, and a detector 24 that detects the resistance R between them is connected to one of the cut ends.

When the punch main body 13 is inserted inside the conductive ring 21 in the sensor Se having the above configuration, and the magnet Mg is positioned at a position corresponding to the sensor Se, the conductive ring 21
The rubber magnet 21a is repelled, and the portion facing the magnet Mg is projected outward, and the conductive film 21b on the outer surface thereof comes into contact with the protruding terminal 22c of the resistance ring 22.

Then, as shown in FIG. 12, the connection point TI
, T2, the protruding terminal 22C in contact with the conductive ring 21, and the detector 24 form a closed circuit.
is detected.

In this way, in order to curve the conductive ring 21 outward and bring the conductive film 21b of the conductive ring 21 into contact with the protruding terminal 22C, as shown in FIG. On the other hand, they are magnetized so that their magnetic fields are opposite to each other in the radial direction. Also,
In order to make the rubber magnet 2]a easier to bend, cuts are made at appropriate intervals to the extent that it does not separate. And elastic material 2
3 is made of a flexible material.

As described above, the sensor Se shown in FIG.
3 is inserted into the station, the resistance R can be detected according to the position of the magnet Mg, and the position of the magnet Mg, as well as the mounting angle, can be detected.

However, in general, the mounting angle of the punch (die) relative to the station is limited by a key or keyway.
A detection accuracy of several degrees (for example, 3 degrees) is sufficient in terms of angle.

FIG. 9 is an explanatory diagram of an example of the sensor configuration in a case where the upper turret (station) is provided with a key groove and the punch is provided with a key. A key 26 is provided on the bunch 25, and the station has four key grooves 27 (27-1, 27-
2, 27-3, 27-4) are provided at 90" intervals.The keyway spacing is 90°, 180°, 225".
'', 315°, or 30', 150', 270'.

In such a case, the sensor Se shown in FIG.
7, the magnet Mg position and, by extension, the mounting angle can be detected by the above-described operation. Of course, it is possible to detect that the punch has been inserted. The same applies when the lower turret is provided with a keyway and the die is provided with a key.

FIG. 10 shows sensor S2 when a key 26 is provided in the station of the upper turret and a keyway is provided in the bunch 28.
FIG. 2 is an explanatory diagram of a configuration example. In this example, bunch 28 has four
Book keyway 27 (27-1゜27-2.27-3.2
7-4), and the station has one key 26
is provided.

The sensor S2 in this case is not particularly different from the sensor Se shown in FIG. The same applies to the die.

FIG. 11 is an explanatory view of the case where neither the station nor the punch of the upper turret is provided with a key or a keyway.

In this case, since the arrangement angle does not matter, only the bunch insertion confirmation is performed. As the sensor S3, the first
It can be configured in the same way as the sensor in Figure 0. The same applies to the die.

FIGS. 1 and 2 show sensors 5e (Sl, S) as described above.
2. FIG. 3 is an explanatory diagram showing a wiring system connecting S3) and a detector 24 and a configuration of a communication means.

As shown in FIG. 1, in this example, a power receiving/transmitting unit 29 is provided around the turret rotating shaft 5.
and each station S are connected by wiring 30.

At least one of each wiring is required in order to detect the resistance R, and is molded into a groove cut on the turret via a molding material made of an appropriate non-conductive material. Therefore, even if some wear occurs on the upper side of the molding material, the wiring will not be adversely affected.

A power transmitting/receiving unit 31 is provided at a position on the frame side with respect to the power receiving/transmitting unit 29, and antenna units 32 (
32-1, 32-2, 32-3) 38, wireless communication is performed using microwaves. The antenna unit 32 is designed so that communication is possible regardless of the turret rotation state.
Three pieces are provided at equal intervals on the circumference of the rotating shaft 5. This antenna 32 may be provided along the entire circumference around the rotation axis 5.

As shown in FIG. 12, the lower turret 4 is also wired in the same way on the lower surface side of the turret, and a power receiving/transmitting unit 29 and a power transmitting/receiving unit 31 are arranged.

FIG. 12 shows details of both units 29 and 31.

As shown in the figure, the power receiving/transmitting unit 29 includes a transmitting/receiving antenna unit 32, a power supply circuit 33, a sensor processing circuit 34, and a demodulation/modulation circuit 35. A container 24 is built-in.

The power supply circuit 33 converts the microwave received by the antenna unit 32 into a power source, charges the built-in battery, and then
It supplies a stable power supply voltage to the sensor processing circuit 34, demodulation/modulation circuit 35, and other devices (not shown) that require power.

The sensor processing circuit 34 converts the resistance value of each station detected by the detection circuit 24 into a numerical value, and sends the numerical value to the demodulation/modulation circuit 35. If the detection value is attached to the station number in correspondence with the station number, data for all stations can be sent out at once.

It is also possible to transmit the information sequentially on a station-by-station basis.

The demodulation/modulation circuit 35 modulates the data input from the sensor processing circuit 34, sends it to the antenna unit 32, and transmits it to the power transmission/reception unit 31 as a wireless signal.

On the other hand, the power transmission/reception unit 31 includes a power supply circuit 36, a power supply circuit 37, the antenna unit 38, a demodulation/modulation circuit 39, a CPU 40, and an interface 41.

The antenna unit 38 receives power from the power supply circuit 37 and transmits power to the antenna unit 32 of the power receiving/transmitting unit 29.
It supplies microwave power to the antenna unit 32 and receives data sent from the antenna unit 32. The demodulating/modulating circuit 39 manually demodulates the data sent from the power receiving/transmitting unit 29 and converts it into a C
It is output to PU40.

The CPU 40 compares the demodulated data with a data table of resistance values and angles created in advance, converts the data into angles, and determines the insertion state of the mold.

The interface 41 outputs data obtained by the CPU 40 to a display and an NC device that controls the turret punch press.

For example, the data calculated by the CPU 40 is as follows. Therefore, a list like the one above can be displayed on the display, so that the operator can check whether the mold has been installed at the correct placement angle and the placement angle between the punch and die. You can check at a glance whether there are any differences.

Additionally, since the data in the above table can be provided to the NC device, an alarm can be output if the mounting angle is different from the specified value, if the mold is not installed, or if the mounting angles of the punch and die are different. I can do it.

Furthermore, for example, an LED lamp provided near the station can be turned on for molds having different arrangement angles to encourage the arrangement angle to be changed.

In the above embodiment, angle detection was performed by using the conductive ring 21 and changing the resistance R of the resistance ring 22 by repelling the rubber magnet 21g with the magnet Mg embedded in the punch. Instead of the conductive ring, a plurality of magnetic sensors 42 such as MR sensors whose contacts are turned on by magnetic detection may be provided, and the angle may be detected according to the position of the activated magnetic sensor 42.

Further, as shown in FIG. 14, the key itself of the punch body 13 can be used as a dog to short-circuit the contacts at the position where the key is inserted, and the mounting angle can be detected from the short-circuited contact position.

Furthermore, regarding the sensor, the mold attachment is not limited to one that detects the angle, and it is also possible to use a sensor that reads the mold identification code, for example.

The present invention is not limited to the above-mentioned embodiments, but can be implemented in any appropriate manner by making appropriate design changes.

[Effects of the Invention] As explained in detail above, according to the present invention, power transmission and reception are performed between the power transmission/reception unit and the power reception/transmission unit provided on the fixed frame and the turret side, respectively, in a manner that allows constant communication. Since power is received, transmitted, and received, power can be transmitted and received at all times or at any time, and it can be operated independently of the press control device, making the control system simple.

In addition, since power can be supplied at all times or at any time regardless of the rotational state of the turret, it can also accommodate the addition of equipment that requires power, such as lamps.

[Brief explanation of drawings]

1 and 2 are explanatory diagrams showing a communication system on the turret, FIG. 3 is a front view of the turret punch press, FIG. 4 is a plan view of the turret, and FIG. The figure is an explanatory diagram showing how the punch and die are attached to the turret according to an embodiment of the present invention, Fig. 6 is a plan view showing the structure of the angle detection sensor, and Fig. 7 is an explanatory diagram of the operating principle of the sensor. ,
Fig. 8 is an explanatory cross-sectional diagram of the conductive ring, Figs. 9 to 11 are explanatory diagrams of the sensor shown in relation to the key and keyway, and
Figure 2 is a block diagram of the communication circuit, Figures 13 and 14.
The figure is an explanatory diagram showing another example of a sensor. 29...Power transmission unit 31...Power transmission/reception unit 32...Antenna unit 38...Antenna unit Se...Sensor

Claims (3)

[Claims] (1) A large number of mold mounting stations are installed on a rotatable turret, any mold is mounted on any mold mounting station, and the mold mounting station specified by the NC program is moved to a predetermined processing position. In a communication device for a turret punch press that performs a predetermined process with a predetermined mold while indexing the mold, a sensor is installed at multiple or all of the mold mounting stations to identify the mold, or to detect the presence or absence of the mold and the arrangement angle. A sensor is provided for detecting a mold attachment state such as the above, and a power transmission/receiving unit is provided for supplying power to a frame portion that fixes the rotating shaft of the turret and receives a detection signal from the sensor, and a power transmission/reception unit is provided for a portion of the turret to detect a state on the turret. The power receiving/receiving/receiving/receiving unit is connected to a large number of sensors and converts the detection signal of each sensor into a digital signal suitable for communication and transmits it, as well as appropriately stores the power supplied from the power transmitting/receiving unit and supplies it to related equipment.
A communication device for a turret punch press, characterized in that a transmitting unit is provided, and the power transmitting/receiving unit and the power receiving/transmitting unit are connected by a non-contact communication means that can communicate at all times at all rotational positions of the turret. (2) In claim 1, the antenna of the power transmission/reception unit is provided on the side of a frame that fixes the rotation axis of the turret, facing toward the rotation axis, and the antenna of the power reception/transmission unit is located at the center of the turret or around its rotation. A communication device for a turret punch press, characterized in that it is installed around a shaft so that it can always receive power output from the power transmission/reception unit. (3) In claim 1, a lamp or indicator related to or unrelated to the sensor is provided on the turret, and the power received by the power receiving/transmitting unit is directed to the lamp or indicator. A communication device for a turret punch press, characterized in that it is also supplied with a communication device for a turret punch press.