JPH0614908Y2 - Check device for grip confirmation sensor in transfer device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a check device for a grip confirmation sensor in a transfer device of a press.

2. Description of the Related Art In general, a feed bar having left and right side portions provided in the vicinity of left and right uprights of a press and a central portion detachably connected to these, and a central portion are provided corresponding to respective processing stations. A plurality of fingers and a plurality of grip confirmation sensors each having a contact attached to the center portion corresponding to each finger and having a corresponding finger closed by gripping the product, and a plurality of grip confirmation sensors corresponding to each grip confirmation sensor at the center portion. Attach the same number of indicators as the grip confirmation sensor connected in series with the contact points of the corresponding grip confirmation sensor, and the DC power supply means with the grip confirmation sensor corresponding to each finger and the display connected in series. The transfer devices provided are known.

Problems to be Solved by the Invention By the way, in the press, it is necessary to replace the finger each time the setup is changed. The replacement is performed outside the press by separating the central part and the side part of the feed bar, placing only the central part on the pedestal of the moving bolster, carrying it out of the press,
This is done by so-called external setup. At the same time as the fingers are replaced, it is necessary to check whether the grip confirmation sensor operates normally.The check is carried in by carrying the center part of the feed bar after finger replacement into the press, It could not be done before, because electricity was not supplied to the electric circuit in the central part only after connecting the parts. Therefore, there is a problem that the operation rate of the press is poor because the internal setup takes time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grip confirmation sensor check device which has not been available in the past in order to solve the above problems.

Means for Solving the Problems The check device for a grip confirmation sensor according to the present invention is
A feed bar having left and right side portions provided in the vicinity of the left and right uprights of the press and a central portion detachably connected to these, and a plurality of fingers provided at the central portion corresponding to each processing station, A plurality of grip confirmation sensors mounted on the central portion corresponding to the respective fingers and having corresponding contacts closed by gripping the product, and a plurality of grip confirmation sensors mounted on the central portion corresponding to the respective grip confirmation sensors A transfer device including the same number of indicators as the grip confirmation sensors connected in series with the contacts of the grip confirmation sensor, and a DC power supply unit in which the grip confirmation sensors corresponding to the fingers and the indicators are connected in series. At, in the central part, a battery is provided to move with it,
The battery is characterized in that it is connected in parallel with the DC power supply means.

In the checking device for the grip confirmation sensor according to the present invention, the battery is provided in the central portion so as to move together with it, and the battery is connected in parallel with the DC power supply means, so that the central portion is carried out of the press. When the battery is supplied with electricity from the battery to the grip confirmation sensor and the display and the contact of the sensor is closed by pressing the product on the finger after replacement, if the sensor is good, the display lights up and if the sensor is defective. If it does not light up.

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

FIG. 1 shows the front feed bar 11 of the pair of front and rear feed bars of the transfer device of the press.

The front feed bar 11 has left and right side portions 21 and 22 provided near the left and right uprights (not shown) and a central portion 23 detachably connected to these. The central portion 23 is provided with a plurality of fingers 24 corresponding to each processing station. A plurality of grip confirmation sensors 25 are attached to the upper surface of the central portion 23 corresponding to each finger 24. The sensor 25 is a limit switch or proximity switch and has a contact 26 which is closed by the corresponding finger 24 gripping the product (see FIG. 4).
A wiring duct 27 is provided on the front side surface of the central portion 23. A cable 28 projects from the right end of the duct 27, and a receptacle 29 is provided at the projecting end.
On the other hand, another cable 31 extends from the DC power source of the press controller (not shown), and the plug 32 provided at the end thereof is connected to the receptacle 29. Further, along with the duct 27, a check device 33 is attached on the left side thereof.

As shown in detail in FIG. 2, a plug 35 is provided at the tip of the lead wire 34 of each sensor 25. A mounting plate 36 is provided on the top wall of the duct 27 so as to be positioned in front of each sensor 25, and a receptacle 37 having a plug 35 connected thereto and a display 38 are mounted side by side with the receptacle 37. .

As shown in FIG. 3, the checking device 33 includes a box-shaped casing 41, a rechargeable battery 42 housed inside the casing 41,
An illumination type push button switch 43 for battery check, which is attached to the top wall of the casing 41, is provided.

FIG. 4 shows an electric circuit of the transfer device including an electric circuit of the check device 33.

A light emitting diode 38, which is an indicator, is connected in series to the contact 26 of each grip confirmation sensor 25. A plurality of series circuits including the contacts 26 and the light emitting diodes 38 are connected in parallel, and the parallel circuits are connected in series to the cables 28 and 31 described above. On the other hand, the parallel circuit includes a check device 33.
Connected in series with a battery 42 and a resistor 44.
The battery 42 is connected in parallel with a series circuit including a contact point 45 of a battery check illuminated push-button switch 43 and a light emitting diode 46. A diode 47 is connected in parallel with the resistor 44.

When the central portion 21 and the side portions 22 and 23 of the feed bar 11 are connected and the receptacle 29 and the plug 32 are connected during steady work, electricity is supplied to the parallel circuit from the DC power source of the controller. The light emitting diode 38 emits light when the finger 24 grips the product and the sensor 25 contact 26 is closed. At the same time, the electricity is supplied to the potential 42 in the opposite direction, so that the battery 42 is charged.

When the central portion 23 of the feed bar 11 is separated from the press during setup, electricity is supplied from the battery 42 to the parallel circuit this time. Then, the contacts 26 are manually closed one by one to check the blinking of the light emitting diode 38, and if there is a defective sensor 25, it can be exchanged for a good product.

Effect of the Invention According to the present invention, when the central portion is carried out of the press, electricity is supplied from the battery to the grip confirmation sensor and the indicator, and the contact of the sensor is closed by pressing the product on the finger after replacement. , If the sensor is good, the indicator lights up, and if the sensor is bad, it does not light up, so it is possible to check whether the sensor is good or bad by external setup, shortening the internal setup time. The operating rate of the press can be improved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view of a feed bar, FIG. 2 is an enlarged perspective view of a part of FIG.
FIG. 3 is a perspective view of a check device for a grip confirmation sensor,
FIG. 4 is an electric circuit diagram of the transfer device. 11 …… Feed bar, 21,22 …… Side part, 23 …… Center part, 24 …… Finger, 25 …… Sensor, 26 …… Contact, 38…
… Indicator, 42… battery.

Claims (1)

[Scope of utility model registration request] 1. A feed bar 11 having left and right side portions 21 and 22 provided near the left and right uprights of a press and a central portion 23 removably connected to these, and the central portion 23 corresponds to each processing station. And a plurality of grip confirmation sensors 25 having contact points 26 attached to the central portion 23 corresponding to each finger 24 and the corresponding finger 24 is closed by gripping the product. , The same number of indicators as the grip confirmation sensors 25 attached to the central portion 23 corresponding to each grip confirmation sensor 25 and connected in series with the contact 26 of the corresponding grip confirmation sensor 25
38, and a DC power supply means in which a grip confirmation sensor 25 corresponding to each finger 24 and a display 38 are connected in series, in a transfer device including a battery 42 for moving to the central portion 23. And a battery 42 connected in parallel with the DC power supply means.