JPH0710814Y2 - 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 parts provided in the vicinity of left and right uprights of a press and a central part detachably connected to these, a moving bolster for carrying the central part into and out of the press, and a central part Multiple grip confirmations with parts having multiple fingers provided for each processing station and contacts attached to the central part for each finger and the corresponding fingers being closed by gripping the product The sensor and the same number of indicators as the grip confirmation sensors, which are attached to the central portion corresponding to each grip confirmation sensor and are connected in series with the contacts of the corresponding grip confirmation sensor, are provided, and the power supply means A transfer that is connected in series through the side part to the grip confirmation sensor and indicator corresponding to the finger. The device is 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 exchange is performed by so-called external setup, in which the central portion is separated from the side portion of the feed bar, only the central portion is placed on the pedestal of the moving bolster, is carried out from the press, and is carried out outside the press. 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,
Since the internal setup takes time, there was a problem that the operating rate of the press was poor.

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
Feed bar having left and right side parts near the left and right uprights of the press and a central part detachably connected to these, a moving bolster that carries the central part into and out of the press, and each processing in the central part A plurality of fingers provided corresponding to the stations, a plurality of grip confirmation sensors having a contact portion attached to the central portion corresponding to each finger and being closed by gripping the product by the corresponding fingers, and each grip In a transfer device equipped with the same number of indicators as the grip confirmation sensor, which is attached to the central portion in correspondence with the confirmation sensor and is connected in series with the contacts of the corresponding grip confirmation sensor, a power supply means is provided for each finger. When the side part and the center part are connected to the corresponding grip confirmation sensor and display, Through rectangular portion, and is characterized in that it is adapted to be connected in series through the mobile bolster in a state where the side portions and the central portions are separated.

In the finger grip confirmation sensor check device according to the present invention, the power supply means is connected to the grip confirmation sensor and the indicator corresponding to each finger through the side portion and the side portion when the side portion and the central portion are connected. When the central part and the central part are separated, they are connected in series through the moving bolster, so the central part is carried out of the press by the moving bolster and the lateral part and the central part are separated. When the power is supplied to the grip confirmation sensor and the indicator through the moving bolster, the contact point of the sensor is closed by pressing the product against the finger after replacement.If the sensor is good, the indicator lights up. If the sensor is defective, it will not light.

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 a 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 main 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 main plug 32 provided at the end thereof is connected to the main receptacle 29. Further, the cable 41 also projects from the left end of the duct 27, and the auxiliary receptacle 42 is provided at the projecting end.

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 central portion 23 separated from the side portions 21 and 22 is placed on the pedestal 44 of the moving bolster 43 and is discharged from the press. The moving bolster 43 is provided with an auxiliary DC power supply (not shown), and an auxiliary plug 46 is provided at the tip of the cable 45 extending from the auxiliary DC power supply. The auxiliary plug 46 is a piston rod of the vertically upward fluid pressure cylinder 47.
It is attached to 48 and can be raised and lowered. The auxiliary plug 46 is connected to the auxiliary receptacle 42 by raising the auxiliary plug 46 with the central portion 23 placed on the pedestal 44. When the central portion 23 is placed on the pedestal 44, there is also a transfer device having a mechanism for lowering the entire feed bar 11, but in such a device, it is not necessary to move the auxiliary plug 46 up and down, and therefore, the fluid pressure cylinder 47 is unnecessary.

The electrical circuit of the transfer device is shown in FIG.

A light emitting diode 37, which is an indicator, is connected in series to the contact 26 of each grip confirmation sensor 25. A plurality of series circuits each including the contact 26 and the light emitting diode 37 are connected in parallel.

When the central portion 21 and the side portions 22 and 23 of the feed bar 11 are connected and the main receptacle 29 and the plug 32 are connected during steady operation, the parallel circuit is connected to the DC power supply of the controller described above, Electricity is supplied to the parallel circuit from the same power source. Finger 24 grips the product and sensor 25
When the contact 26 is closed, the light emitting diode 37 emits light.

When the central portion 21 of the feed bar 11 is separated from the press during setup, the main receptacle 29 and plug are
32 disconnected, this time auxiliary receptacle 42 and plug
When 46 is connected, electricity is supplied from the auxiliary DC power supply to the parallel circuit. Then, manually close the contacts 26 one by one and check the blinking of the light emitting diode 37, and
If you have 25, you can replace it with a good one.

Effect of the Invention According to the present invention, the central part is carried by the moving bolster to the outside of the press, and when the side part and the central part are separated, electricity is supplied from the power supply means to the grip confirmation sensor and the display through the moving bolster. When the contact of the sensor is closed by pressing the product against the finger after it is supplied,
If the sensor is good, the indicator lights up, and if the sensor is bad, it does not light up.Therefore, it is possible to check whether the sensor is good or defective by external setup, which shortens the internal setup time. The operation rate of can be improved.

[Brief description of drawings]

1 shows an embodiment of the present invention, FIG. 1 is a perspective view of a feed bar in which a central portion is connected to side portions, and FIG. 2 is an enlarged perspective view of a portion of FIG. FIG. 3 is a perspective view of the central portion of the feed bar placed on the moving bolster separated from the side portion, and FIG. 4 is an electric circuit diagram of the transfer device. 11 ... Feedbar, 21,22 ... side part, 23 ... central part, 24
… Fingers, 25… Sensors, 26… Contacts, 37… Indicators, 43…
Mobile bolster, 44 ... pedestal.

Claims (1)

[Scope of utility model registration request] 1. A feed bar 11 having left and right side portions 21 and 22 provided in the vicinity of left and right uprights of a press, and a central portion 23 detachably connected to these, and a central portion 23 carried in and out of the press. Move bolster 43
A plurality of fingers 24 provided in the central part 21 corresponding to each processing station, and attached to the central part 23 corresponding to each finger 24 and the corresponding fingers 24 are closed by gripping the product. A plurality of grip confirmation sensors 25 having contact points 26, and grip confirmation sensors 25 attached to the central portion 23 corresponding to each grip confirmation sensor 25 and connected in series with the contact points 26 of the corresponding grip confirmation sensor 25; Equal number of indicators
38, and the power supply means, when the side parts 21, 22 and the central part 23 are connected to the grip confirmation sensor 25 and the indicator 38 corresponding to each finger 24, A check device for a grip confirmation sensor, characterized in that when the side portions 21 and 22 and the central portion 23 are separated through the portions 21 and 22, they are connected in series through a moving bolster 43, respectively. .