JPS6264446A - Method and device for die lubricating warm and hot forging machine - Google Patents

Abstract

PURPOSE:To prevent the soldification of a die lubricant and the contamination of water by selectively connecting the discharge side of the pump for lubricant feeding and the discharge side of the water feeding source to the lubricant feeding path providing a solenoid valve at the operating time of a hot forging machine. CONSTITUTION:Plural dies 1 and a spray nozzle 2 are arranged on a hot forging machine. The feeding path of the die lubrication oil is composed by connecting the spray nozzle 2 to the feeding pipe 4 via a solenoid valve 3. The feeding pipe 4 is connected to a lubrication oil feeding pump 5 and cleaning pipe 6, provided a water feeding source and air feeding source moreover. In starting the die forging the solenoid valve 3 is opened and closed at the prescribed timing on each die 1 and executes the die forging by obtaining the feeding 5 of the die lubricating oil. After completion of the operation, the residual lubrication oil is discharged by a water feeding hose 8 and the water is removed by air feeding hose 10. With said structure the die lubricant can be arranged not to be residual on the feeding path of the die lubricant and no water content can be arranged to be left over as well.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method and apparatus for lubricating molds of hot forging machines.

Conventional technology A lubrication method that constantly supplies mold lubricant to the mold.

A lubrication method in which an electromagnetic on-off valve is provided in a mold lubricant supply path, and by opening and closing the electromagnetic on-off valve, mold lubricant is supplied to the mold or the supply is stopped.

Problems to be Solved by the Invention In the former lubrication method, the mold lubricant is wasted and the capacity of the pump that supplies the mold lubricant becomes too large.

With the latter lubrication method, when the electromagnetic on-off valve is closed, the mold lubricant remains in the supply path that communicates the pump and the electromagnetic on-off valve, so the M-type lubricant is supplied while the hot forging machine is not operating. There are cases where mold lubricant cannot be supplied at the next operation due to sticking to the road.

This is particularly remarkable when a graphite-based +m f'ij agent is used as the mold lubricant.

Note that if mold lubricant is constantly supplied to the mold using a spray nozzle, the mold lubricant will solidify inside the spray nozzle while the hot forging machine is at rest, as described above, and will be removed from the mold during the next operation. Lubricant may not be available.

Precautionary measures and actions to solve the problem: At the end of operation of the hot forging machine, clean the mold lubricant supply passage with water, etc., and then remove 1q of moisture from the supply passage, and add the mold lubricant to the supply passage. The lubricant is lubricated by preventing cleaning agent from remaining and allowing the discharge side of the lubricant supply pump and the discharge side of the water supply source to be selectively connected to a lubricant supply path equipped with an electromagnetic on/off valve. It is possible to selectively supply the agent and water.

Embodiment A die 4 is placed opposite a plurality of dies 1 of a hot forging machine (not shown).
One lubricant supply port, for example, a spray nozzle 2, is provided, and each spray nozzle 2 is connected to a mold lubricant supply pipe 4 via an electromagnetic on-off valve 3, and this supply pipe 4
and the spray nozzle 2 constitute a mold lubricant supply path.

The supply pipe line 4 is connected to the discharge side of a lubricant supply bo/g 5, and is also connected to a cleaning pipe 6, and this cleaning vibro is connected to a coupling 7 having a reverse valve function. is connected to this coupling 7, and a coupling 9 provided on a water supply hose 6 connected to a water supply source and a coupling ring 11 provided on an air supply hose I are inserted and detachable. .

The electromagnetic on-off valve 3 is held in a closed position by a spring force, and is switched to an open position when a solenoid 3α is energized.

In addition, each electromagnetic on-off valve 3f''i is opened and closed at a predetermined timing determined for each mold based on the slide stroke of the hot forging machine. Specifically, the timing is set by the rotary cam for each slide. By setting the lubrication at The process finger receives a signal from the sensor that the material is to be carried in, and the solenoid 3α is energized to the open position.

After the operation is finished, connect the water supply hose to the cleaning vibro with the 8-minute coupling 9.7, and supply water to the supply pipe 4.
, the electromagnetic on-off valve 3 and the spray nozzle 2 to discharge and clean the remaining mold lubricant.

After this, connect the couplings 11 and 7 of the air supply hose I.
Following the cleaning vibro, the entire air supply pipe 4,'α
It is sprayed through the electromagnetic on-off valve and the spray nozzle 2 to blow away and remove moisture.

In this way, the mold lubricant will not be fixed in the supply pipe 4, the electromagnetic on-off valve 3, and the spray nozzle 2 while the hot forging machine is stopped, and when the mold lubricant is supplied next time. No moisture gets mixed into the mold lubricant.

In FIG. 1, the used mold lubricant supplied to each mold 1 falls into a receiving tray 2o, passes through the receiving tray 2o, the sifter 21 and the magnetic filter 22, and falls into the first tank 23.

The type 6 lubricant dropped and stored in the @1 tank 23 overflows and is supplied into the second tank 25 via the gutter 24, and the type lubricant in the second tank 25 is passed through the magnetic filter 27 by the supply pump 26. Then, it is supplied into the third tank 2B.

Then, the mold lubricant in the third tank 28 is pumped to the supply pipe line 4 by the pump 5.

Because of this, the used mold lubricant is fikl'-2
The mold lubricant is filtered in the first tank 23 to remove dust, scale is removed in the Macnet filter 22, and the unremoved dust and scale are deposited in the first tank 23, and the cleaned mold lubricant is transferred to the second tank 23. Since the used mold lubricant is sent to the third tank 25.2 g, there is no problem in reusing the used mold lubricant, which is economical and prevents the pump 5 from malfunctioning.

Note that the drive motor 29 of the replenishment pump 26 is connected to the third tank 2.
It is driven by the detection signal of the low oil level detection switch 30 of 8, and is stopped by the detection signal of the high oil level detection switch 31, and is always @3
The mold lubricant is kept in the tank 28 in an amount equal to or more than the specified fit.

Furthermore, as shown in FIG. 2, each electromagnetic on-off valve 3 may be enclosed in a seal box 40 made of stainless steel.

In this way, it is possible to prevent the mold lubricant from scattering to the electromagnetic on-off valve 3, and the electromagnetic on-off valve 3 can be installed near the mold 1.
Even if the responsiveness of supplying and stopping the lubricant is improved, it is possible to prevent the mold lubricant supplied to the mold 1 from scattering to the electromagnetic on-off valve 3 and causing electrical leakage.

In other words, if the value on-off valve 3 is installed near the mold 1, the mold lubricant will be supplied and stopped immediately when the electromagnetic on-off valve 3 is opened or closed, improving responsiveness. Since the lubricant may splash onto the electromagnetic on-off valve 3 and cause electrical leakage, the electromagnetic on-off valve 3 should be placed in a stainless steel seal box 40.
covered with

Effects of the invention It is possible to prevent mold lubricant from remaining in the supply path of the mold lubricant, and also to prevent moisture from remaining in the supply path, so that the mold lubricant solidifies in the supply path when the hot forging machine is not in operation. This prevents the mold lubricant from being unable to be supplied when the mold is restarted, and also prevents moisture from entering the mold lubricant.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being an overall explanatory diagram and FIG. 2 being an explanatory diagram of another embodiment. 1 is a mold, 3 is an electromagnetic on-off valve, and 4 is a supply pipe.

Claims (1)

[Claims] 1. When the hot forging machine is in operation, mold lubricant is supplied to the mold I, and when the operation is finished, the mold lubricant supply path is cleaned with water or the like, and then the moisture in the supply path is removed. A mold lubrication method for a hot forging machine, characterized in that the die lubrication is removed. 2. A hot forging machine characterized in that the discharge side of a lubricant supply pump and the discharge side of a water supply source can be selectively connected to a lubricant supply path equipped with an electromagnetic on-off valve 3. Mold lubrication device. 3. A mold lubricating device for a hot forging machine according to claim 2, characterized in that the electromagnetic on-off valve 3 is installed near the mold I, and the electromagnetic on-off valve 3 is covered with a seal box 40. 4. The lubricating oil supplied to Type I falls into a tank through a filter and a magnetic filter, and the lubricating oil in this tank is supplied to the suction side of the lubricant supply pump by a replenishment pump. A die lubricating device for a hot forging machine as claimed in claim 2.