JPH07171649A - Lubricant spraying device of hot forging press - Google Patents

Abstract

PURPOSE:To coat a lubricant uniformly on all over surface so to form a dry film of lubricant by spraying a lubricant on a die with a lubricant nozzle, subsequently spraying air with an air nozzle. CONSTITUTION:By opening a solenoid valve 25 with a control part 16, a lubricant 14 is sprayed on a lower die from a lubricant nozzle 11 for the prescribed time. After spraying of the lubricant 14 is completed by closing the solenoid valve 25 with the control part 16, by opening the solenoid valve 26 with the control part 16, air is sprayed on the lower die from an air nozzle 12 for the prescribed time. By this method, the lubricant 14 coated on the lower die is spread on all over the surface of lower die, making the sticking quantity uniform. Therefore, even when a forging cycle is short, the seizure between the die and material to be worked is prevented, after completing forging work, the die releasing of material to be worked is made easy.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating liquid spraying device for a hot forging press for spraying and applying a lubricating liquid onto a die of the hot forging press.

[0002]

2. Description of the Related Art As is well known, in a hot forging press, a metal material having a large plastic deformation resistance is heated to a recrystallization temperature or higher and then sandwiched between a pair of upper and lower forging dies to be compressed by a press. It is a device that forges into the required shape. When the metal material is forged by this hot forging press, the die of the hot forging press and the work material do not seize, and the work material is easily released from the die after forging. As described above, the lubricant is sprayed on the mold in advance to form a dry coating film of the lubricant, and then the forging process is performed. Therefore, in the conventional hot forging press, a lubricating liquid nozzle is arranged in the vicinity of the mold, and the lubricating liquid is supplied from the lubricating liquid supply device to the forging process under the control of the control device. Previously, the lubricant was sprayed from the lubricant nozzle onto the mold to apply it.

[0003]

By the way, because of the structure of the hot forging press, the lubricating liquid nozzle is arranged at a certain distance from the mold, and the lubricating liquid is sprayed obliquely onto the mold. It is difficult to apply the lubricant evenly to the mold, and it becomes thick on the side close to the lubricant nozzle and thin on the side away from the nozzle, and the lubricant is not applied to part of the mold. In some cases. Also, even if the lubricant is applied to the entire surface of the mold, the water in the lubricant will evaporate by the time the forging of the next workpiece is started in the area where the lubricant is appropriately applied to the mold. A dry film is formed, but in the area where the lubricant is excessively applied, the water content in the lubricant does not evaporate in time, and the forging of the next workpiece is started before the dry film is formed. I will end up. In these cases, the material to be processed cannot be easily released from the mold after forging, which is a problem.

The present invention has been made in view of the above-mentioned circumstances, and a hot working method capable of uniformly applying a lubricating liquid to the entire surface of a die of a hot forging press to form a dry coating film of the lubricating liquid. An object is to provide a lubricating liquid spraying device for a forging press.

[0005]

A lubricating liquid spraying device for a hot forging press according to claim 1 is a lubricating liquid spraying device for a hot forging press for spraying and applying a lubricating liquid to a die of the hot forging press. And a lubricating liquid nozzle disposed near the mold for spraying a lubricating liquid to the mold, an air nozzle for spraying air to the mold, and a lubricating liquid supply for supplying the lubricating liquid nozzle with the lubricating liquid. Device, an air supply device for supplying air to the lubricating liquid nozzle and the air nozzle, and a control device for controlling the spraying timing and the spraying time of the lubricating liquid sprayed by the lubricating liquid nozzle and the air sprayed by the air nozzle. It is characterized by comprising:

A lubricating liquid spraying device for a hot forging press according to a second aspect is the lubricating liquid spraying device for a hot forging press according to the first aspect, in which the control device supplies air to the lubricating liquid nozzle. First solenoid valve installed in the air nozzle, a second solenoid valve installed in a pipeline that supplies air to the air nozzle, and a control unit that controls opening and closing of the first and second solenoid valves. It is characterized by comprising and.

[0007]

In the lubricating liquid spraying device for the hot forging press of the present invention, the lubricating liquid nozzle and the air nozzle are arranged in the vicinity of the die of the hot forging press, and the lubricating liquid spraying and the air nozzle by these lubricating liquid nozzles are arranged. Since it is equipped with a control device that controls the spraying timing and the spraying time of the air by, for example, spray the lubricating liquid from the lubricating liquid nozzle to the die of the hot forging press, and then spray the air from the air nozzle. As a result, the lubricating liquid is evenly applied to the entire surface of the mold, and the water in the lubricating liquid evaporates in a short time to form a dry film on the mold.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The hot forging press 1 shown in FIG. 2 places the heated workpiece 3 on the lower die 2, then lowers the upper die 4 to move the workpiece 3 to the lower die 2 and the upper die. It is a device for scissors pressing with a die 4 to compress it and forging it into a desired shape. Reference numerals 11 and 12 denote a lubricating liquid nozzle and an air nozzle, respectively, which constitute a lubricating liquid spraying device of a hot forging press of the present invention described later, and are arranged to spray the lubricating liquid and air onto the lower mold 2. Has been done.

FIG. 1 shows a lubricating liquid spraying device for the hot forging press. The lubricating liquid spraying device 10 of the hot forging press is roughly configured by the lubricating liquid nozzle 11 and the air nozzle 12, an air supply unit 13, a lubricating liquid storage tank 15 that stores the lubricating liquid 14, and a control unit 16. ing. Also,
A frame 17 is installed above the lubricating liquid storage tank 15, and a stirring motor 18 and a diaphragm pump 19 are mounted on the frame 17.

An air supply pipe 2 is provided in the air supply unit 13.
1 is connected, an air supply pipe 22 is branched from the air supply pipe 21, and the air supply pipe 22 is connected to the diaphragm pump 19. Further air supply pipe 2
Reference numeral 1 is branched into two air supply pipes 23 and 24, which are connected to a lubricating liquid nozzle 11 and an air nozzle 12, respectively. The air supply unit 13 and the air supply pipe 2
The air supply device 13A is composed of 1, 23 and 24. Further, solenoid valves 25 and 26 are provided in the air supply pipes 23 and 24, respectively.
26 is electrically connected to the control unit 16,
It is controlled by 6 and opened and closed. The control unit 16 and the solenoid valves 25 and 26 constitute a control device 16A.

The stirring motor 18 is an impeller 36,
The shaft 37 to which 36 is attached is rotated to dissolve and agitate the water-soluble lubricant introduced into the lubricating liquid storage tank 15 to make the concentration of the lubricating liquid 14 uniform.
Further, the diaphragm pump 19 has an air supply unit 13
It is driven by the air supplied from the above, sucks up the lubricant liquid 14 in the lubricant liquid storage tank 15 through the suction pipe 41, and supplies it to the lubricant liquid nozzle 11 through the lubricant liquid supply pipe 42.
The lubricating liquid storage tank 15 and the diaphragm pump 1
9 and the suction pipe 41 and the lubricating liquid supply pipe 42 constitute a lubricating liquid supply device 15A.

Next, a lubricating liquid spraying device 1 for a hot forging press
The operation of 0 will be described. One forging process is completed,
When the workpiece 3 is removed from the lower mold 2, the control unit 16
Thereby, the solenoid valve 25 is opened, and the lubricating liquid 14 is sprayed from the lubricating liquid nozzle 11 to the lower mold 2 for a predetermined time. Control unit 1
After the solenoid valve 25 is closed by 6 and the spraying of the lubricating liquid 14 is finished, the solenoid valve 26 is opened by the control unit 16 and the air is sprayed from the air nozzle 12 to the lower mold 2 for a predetermined time. By this air spraying, the lubricating liquid 14 applied to the lower mold 2 spreads over the entire surface of the lower mold 2, and the amount of adhesion thereof is made uniform. Then, the work material 3 to be subjected to forging is placed on the lower die 2, the upper die 4 is lowered, and forging is performed. After that, this process is repeated.

According to the lubricating liquid spraying device 10 of the hot forging press as described above, the lubricating liquid 14 sprayed by the lubricating liquid nozzle 11 and applied on the lower die 2 is sprayed by the air nozzle 12 to blow air. It is redistributed uniformly over the entire surface of the lower mold 2. Therefore, the water in the lubricating liquid 14 applied to the lower mold 2 evaporates in a short time to form a dry film, and even if the forging cycle is short, the lower mold 2
The seizure of the work piece 3 can be effectively prevented, and the work piece 3 can be easily released after the forging process is completed.

In the above embodiment, the lubricating liquid spraying device 10 of the hot forging press is described as a device for spraying the lubricating liquid 14 onto the lower mold 2, but the lubricating liquid nozzle 11 and the air nozzle 12 are used as the upper mold. It can also be used as a device for spraying the lubricating liquid 14 onto the upper mold 4 by arranging it at an appropriate position by directing it toward the mold 4.

Further, the lubricating liquid 1 in the lubricating liquid storage tank 15
Although the diaphragm pump 19 driven by air is taken as an example of a pump that sucks up 4 and supplies it to the lubricating liquid nozzle 11, an appropriate pump such as an electric pump may be used depending on the situation.

[0016]

As described above, according to the lubricating liquid spraying device of the hot forging press of the present invention, the following effects can be obtained. That is, a lubricating liquid nozzle and an air nozzle are arranged in the vicinity of the die of the hot forging press, and control is performed to control the spraying timing and the spraying time of the lubricating liquid sprayed by these lubricating liquid nozzles and the air sprayed by the air nozzle Since it is equipped with a device, for example, the lubricant for the hot forging press is sprayed with the lubricant liquid nozzle by the lubricant liquid nozzle, and then the air is sprayed with the air nozzle so that the lubricant liquid applied to the mold is evenly distributed over the entire surface. The redistributed water in the lubricating liquid evaporates in a short time to form a dry film. Therefore, even when the forging cycle is short, it is possible to effectively prevent the seizure of the die and the work material,
After the forging process is completed, the work material is easily released from the mold.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a lubricating liquid spraying device of a hot forging press which is an embodiment of the present invention.

FIG. 2 is a front view showing a hot forging press provided with a lubricating liquid nozzle and an air nozzle.

[Explanation of symbols]

 1 Hot Forging Press 2 Lower Die 4 Upper Die 10 Lubricating Liquid Spraying Device for Hot Forging Press 11 Lubricating Liquid Nozzle 12 Air Nozzle 13A Air Supplying Device 14 Lubricating Liquid 15A Lubricating Liquid Supplying Device 16A Control Device 16 Control Unit 25th One solenoid valve 26 Second solenoid valve

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B21J 13/02 A B30B 15/00 F 8718-4E

Claims (2)

[Claims] 1. A lubricating liquid spraying device for a hot forging press, which sprays a lubricating liquid onto a die of a hot forging press to apply the lubricating liquid to the die. A lubricating liquid nozzle for spraying air and an air nozzle for blowing air to the mold; a lubricating liquid supply device for supplying a lubricating liquid to the lubricating liquid nozzle; and an air supply device for supplying air to the lubricating liquid nozzle and the air nozzle. A lubricating liquid spraying device for a hot forging press, comprising: a controller for controlling a spraying timing and a spraying time of the spraying of the lubricating liquid by the lubricating liquid nozzle and the spraying of air by the air nozzle. . 2. The lubricating liquid spraying device for a hot forging press according to claim 1, wherein the control device includes a first solenoid valve provided in a pipeline for supplying air to the lubricating liquid nozzle, and the air. A hot forging press comprising a second solenoid valve interposed in a pipeline for supplying air to the nozzle, and a control unit for controlling opening and closing of these first and second solenoid valves. Lubricant spray device.