JPH10277792A - Pressure monitoring device for press die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically perform connection between a pressure detector and a relay box when an upper die is fitted to a slide. SOLUTION: A plug 10 having a plurality of pin members 11 is fitted to a Tshaped slot 1a of a slide 1, and a jack having a plurality of contacts which are brought into contact with the corresponding pin members 11 is fitted to a recessed part formed in an upper die 2 during the fitting work to the slide 1. The pin members 11 of the plug 10 are connected to a relay box through a lead 13a, and the contacts of the jack are connected to a pressure detector through a lead.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an upper mold supported by bolts mounted on a plurality of T-shaped slots formed on a bottom surface of a slide, and a cylinder rod of a gas cylinder installed on the upper mold. In a press die with a lower die pressed by a supported pad, when the slide descends, the pressing force against the lower die of the press pad is detected from the gas pressure of the gas cylinder supporting the pad, and the pressing force is set. The present invention relates to a press-type pressure monitoring device that monitors whether a pressure value has been reached.

[0002]

2. Description of the Related Art FIG. 6 shows a press type pressure monitor of a press machine of this type, in which a pad 4 is supported by a cylinder rod 3a on an upper mold 2 supported on a slide 1 of the press machine. A nitrogen gas cylinder 3 is provided below. On the side surface of the upper mold 2, a pressure detector 7 for detecting a pressure applied to the lower mold 6 of the press mold when the slide 1 descends from the gas pressure of the nitrogen gas cylinder 3 and outputting a detection signal when the pressure reaches a set pressure value. Is provided. A relay box 8 connected to a control panel 9 for controlling the operation of the press and to which a detection signal of a pressure detector 7 is supplied via a cable 7a is attached to a side surface of the slide 1.

[0003] As shown in FIG.
A plurality of mold slots 1a are formed, and as shown in FIG. B, a flange 2a of the upper mold 2 is mounted with a head of a bolt 5 in a T-shaped slot 1a at a position corresponding to the bolt insertion hole. It is fixed with a nut 5b via a washer 5a.

[0004]

In such a monitor device, the connector 7b of the cable 7a led out of the pressure detector 7 after the setup operation for mounting the upper die 2 on the T-shaped slot 1a as described above. Relay box 8
The setup work to connect to is left. However, this work is the connection work of the connector, but when the press machine becomes large, especially when another machine is arranged around,
It may take nearly 10 minutes of work time to get up and down a high position.

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a press-type pressure monitor device in which a connection between a pressure detector and a relay box is automatically performed when the upper die is mounted on a slide. And

[0006]

SUMMARY OF THE INVENTION In order to achieve this object, the present invention focuses on the existence of an empty portion in a T-shaped slot. The upper die is supported by bolts attached to the T-shaped slot, and a gas cylinder that supports the pad with a cylinder rod is installed on the upper die, and a relay box that is wired to the control panel for the press on the side of the slide. A pressure detector is installed on the side of the upper die that detects the pressure applied to the lower die of the pad when sliding down from the gas pressure of the gas cylinder, and supplies a detection signal to the relay box when the set pressure value is reached. Press type pressure monitor device
In the mold slot, a one-side connector having a plurality of contacts is mounted, and the other-side connector having a plurality of contacts respectively contacting the corresponding contacts when mounted on a slide in a recess formed in the upper mold. Attach, connect the contact of one side connector to the junction box via the lead wire,
The contact of the other connector is connected to a pressure detector via a lead wire.

When the upper die is mounted on the slide, the contact of the one-side connector mounted on the T-shaped slot comes into contact with the contact of the mating connector mounted on the corresponding concave portion of the upper die, and the relay box and the relay box. The pressure detectors are automatically connected.

[0008]

1 to 5 show a press-type pressure monitor according to an embodiment of the present invention. The same or equivalent parts as those shown in FIGS. 6 and 7 are denoted by the same reference numerals. explain. That is, as shown in FIG. 6, a flange portion 2a of an upper die 2 provided with, for example, two nitrogen gas cylinders 3 is fixed to a T-shaped slot 1a formed in a vertically moving slide 1. The cylinder rod 3a supports a pad 4 as a plate holder, a relay box 8 is mounted on the side of the slide 1, and a pressure detector that outputs a detection signal when the set pressure value is reached on the side of the upper die 2. 7 is attached.

As shown in FIG. 5, a plug 10 is provided at one of the vacant portions not involved in fixing the upper die 2 of the T-shaped slot 1a as one side of a connector comprising a pair of connector portions which can contact each other. A jack 2 is mounted as a counterpart in a concave portion 2a formed in the upper mold 2 at the corresponding position.
0 is attached.

As shown in FIG. 1, a vertically divided contact 11c having bending elasticity is projected from a seat 11b of a pin body 11a as a contact, and a coil spring 11d is housed therein. 2 and a guide member 12 in which a contact 11c is slid in a contact state, and a thread is formed on an outer peripheral surface and an upper inner peripheral surface.
As shown in FIG. 4, the guide member is inserted from above.
A stopper body for restraining the holder body 16 having the pin storage holes 16a, the intermediate holder 17 having the screw holes 17a into which the guide members 12 are screwed, and the seat 11b, and projecting the pin bodies 11a through the pin guide holes 18a. It comprises a holder 19 made of an insulating synthetic resin composed of a plate 18.

A groove 16b for accommodating the lead wire 13a of the cable 13 is formed on the upper surface of the holder body 16, and screw insertion holes 16c are formed at both ends. At four corners of the intermediate holder 17 and the stopper plate 18, bolt insertion holes 1 for bolting these to the holder body 16 are provided.
7c and 18b are formed.

When assembling the plug 10, four lead wires 1 for the power supply of the pressure detector 7 and the detection signal thereof are provided.
3a terminal 12b through washer 12c and screw 12a
Screw to the associated guide member 12 and
And screwed into the nut 17 with a nut 14 via a washer 14a. Next, the pin member 11 is inserted into the guide member 12 and housed in the pin housing hole 16a of the holder main body 16, and the pin main body 11a
The stopper plate 18 and the intermediate holder 17 are screwed to the holder main body 16 with the bolts 19b via the washers 19a so that the pins protrude from the pin guide holes 18a. In this state, the coil spring 11d is compressed to urge the pin body 11a in the protruding direction. Subsequently, both ends of the holder main body 16 are screwed to the upper wall of the T-shaped slot 1a with bolts through the screw insertion holes 16c, and the four lead wires 13a led out from the respective pin storage holes 16a are bolted through the grooves 16b. And the cable 13 is directly connected to the relay box 8 without a connector (see FIG. 5).

On the other hand, as shown in FIGS. 3 and 4, the jack 20 has a conductive bolt 22 as a contact having an upper surface formed as a fixed contact 22a and a bolt insertion hole 26a through which the bolt is inserted. Holder 25 having individually formed holder body 26 and base 27 having a U-shaped cross section
It is composed of

A bolt 22 is screwed to the holder body 26 with a nut 23 via a washer 23a, and a lead wire 28a belonging to the cable 28 is soldered to a protrusion 22b formed at the lower end thereof. The holder 27 is placed on the base 27 while the base 27 is screwed to the recess 2b formed in the upper mold 2 with a bolt 27a, and is screwed to the base 27 at four corners via bolts 29 via washers 29a. . The four lead wires 28a are formed in the grooves 2 formed in the upper die 2.
c and is connected to a pressure detector 7 attached to the side surface of the upper die 2 (see FIG. 5).

When the upper die 2 is mounted on the slide 1, the four pin bodies 11a are automatically brought into pressure contact with the associated fixed contacts 22a by the coil springs 11d, and the four pins for the power supply and the signal for the relay box 8 are provided. Of the guide member 1
2. Connect to the lead wire 28a on the pressure detector 7 side through the contact 11c, the pin body 11a and the bolt 22. The pressure applied to the lower mold 6 of the pad 4 when the slide 1 is lowered is detected from the gas pressure of the nitrogen gas cylinder 3 in the same manner as before, and when the pressure reaches a set pressure value, the pressure detector 7 supplies a detection signal to the relay box 8. I do. If no detection signal is output,
The control panel 9 interrupts the operation of the press.

Incidentally, in place of the above-described embodiment, it is possible to mount the plug on the lower mold and mount the jack on the T-shaped slot in some cases. Further, as the structure of the contact, another configuration such as a leaf spring structure on both sides is also conceivable.

[0017]

As described above, according to the present invention, the connection between the pressure detector and the relay box is made via the connector portions on both sides by utilizing the close contact of the upper die to the slide of the press machine in the mounted state. This is performed automatically during the setup work of the upper mold. Therefore, dangerous work in the press machine for this connection is not required, and the setup time is also reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a plug as one side connector of a press-type pressure monitoring device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a holder portion of the plug.

FIG. 3 is a sectional view of a jack as the other connector.

FIG. 4 is a perspective view showing an assembled state of the jack.

5 shows a schematic configuration of a pressure monitoring device using the plug and the jack, wherein FIG. 5A is a side view and FIG. 5B is a plan view.

FIG. 6 is a side view showing a schematic configuration of a conventional pressure monitoring device.

FIGS. 7A and 7B are views for explaining the press die, in which FIG. A is a plan view of a slide, and FIG.

[Explanation of symbols]

 Reference Signs List 1 slide 1a T-shaped slot 2 upper die 3 nitrogen gas cylinder 4 pad 6 lower die 7 pressure detector 8 relay box 10 plug 20 jack

Claims (1)

[Claims] An upper die supported by bolts mounted on a plurality of T-shaped slots formed on a bottom surface of a slide as a press die, and supported by a cylinder rod of a gas cylinder provided below the upper die. A lower box that is pressurized by a pad is provided, and a relay box that is wired to the control panel for the press is attached to the side of the slide. In a press type pressure monitoring device equipped with a pressure detector that detects pressure from the gas pressure of a gas cylinder and supplies a detection signal to a relay box when a set pressure value is reached, The other connector having a plurality of contacts, each of which contacts a corresponding one of the contacts at the time of attachment to a slide in a recess formed in the upper mold while mounting the one-side connector having the contacts. The contact of the one side connector was connected to a relay box via a lead wire, and the contact of the other side connector was connected to a pressure detector via a lead wire. Press type pressure monitor.