JP2981664B1 - Oil application equipment - Google Patents

Abstract

Abstract: [Problem] To apply a very small amount of oil,
Improve the working environment and save oil resources and expenses. SOLUTION: An air supply path for guiding air for application to a blowing nozzle, an oil supply path for guiding oil 3 in an oil container 32 to the blowing nozzle, and an oil drop 23 provided in the middle of the oil supply path and dropping. A vent valve 4 for introducing outside air into a thin tube 24 to be cooled and an oil droplet falling space 27 formed below the thin tube 24, and preventing the dropped oil droplets 23 from flowing back to the outside.
4 was provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil applicator used in cutting, and more particularly to an oil applicator capable of reducing the amount of oil applied.

[0002]

2. Description of the Related Art FIG. 9 shows an example of a conventional oil application apparatus of this type.

The oil application device shown in FIG. 9 applies an oil for cooling a workpiece by air and lubricating it with oil in the cutting of a metal material. After flowing through the air supply hose 61 and passing through the oil opening / closing valve 65, it is guided to the tip of the spray hose 62 and is blown out from the blowout nozzle 64 toward the workpiece. On the other hand, the oil 3 in the oil container 4 is
After the opening / closing operation and the oil amount adjusting operation are performed in, the oil flows through the oil supply hose 63 inserted into the spray hose 62 and is applied from the blow nozzle 64.

[0004] In the blowing nozzle 64, the oil 3 in the oil container 4 is discharged by the blowing nozzle 64 due to the negative pressure accompanying the blowing of the air 2.
And atomized in the air 2 and sprayed on the workpiece.

[0005]

By the way, when the oil 3 is applied, the air in the work place is filled with fine oil particles, which impairs the work environment and is not preferable for the health of workers, and also from the viewpoint of saving resources. The amount of oil 3 applied to the workpiece should be kept to a minimum.

However, in this type of conventional oil application apparatus, the oil 3 is filled up to the entire oil supply path at the time of application, and at the same time, the weight of the oil container 4 due to its head drop and the blowing nozzle 6
4 and the suction nozzle 6
4 are supplied and blown out. Therefore, when the air 2 is supplied at the time of application, the inside of the oil supply path is always in a negative pressure state due to the blowing of the air 2 from the blowing nozzle 64,
Since the oil is pulled by a strong suction force, even if the oil opening / closing valve 65 is squeezed to the minimum, a predetermined amount or more of the oil 3 is always applied, and it is not possible to squeeze it to a very small amount. Even if the blowing pressure of the air 2 is reduced, it is not possible to narrow down to a minute amount, and if the blowing pressure is reduced, the cooling capacity is reduced. As a result, in this type of conventional oil application device, the oil 3 is applied more than necessary and consumed, which is not preferable in terms of the working environment, and results in waste of resources and economic loss. .

[0007] Accordingly, the present invention can apply a very small amount of oil, thereby improving the working environment and improving oil resources,
It is an object of the present invention to provide an oil application device that can save costs.

[0008]

SUMMARY OF THE INVENTION The invention oil coating apparatus according to claim 1 includes an air supply passage leading to blowout nozzle to introduce were fed for coating air was fed from an oil container The oil is introduced and guided to the blowing nozzle, and the oil is introduced to the blowing nozzle.
An oil supply path that mixes with the air flowing through the air supply path, an oil drop drop section provided in the middle of the oil supply path to drop oil drops, and the oil drop drop section And a vent valve for introducing outside air into the falling space formed in the falling space and preventing the oil droplets falling into the falling space from flowing backward to the inflow direction of the outside air and leaking to the outside. is there.

According to a second aspect of the present invention, there is provided an oil applying apparatus, wherein the oil drop falling portion according to the first aspect is formed by a thin tube having an inner diameter for dropping as an oil drop.

According to a third aspect of the present invention, there is provided an oil applying apparatus, wherein an inspection window for confirming an oil drop falling state of the oil drop falling portion according to the first or second aspect from outside is formed. .

According to a fourth aspect of the present invention, in the oil application device according to any one of the first to third aspects, the air from the air supply path is provided below the oil container.
Oil opening / closing means for opening / closing an oil outflow path from the oil container in conjunction with the supply / stop of the oil.

According to a fifth aspect of the present invention, there is provided an oil application device according to any one of the first to fourth aspects, wherein the oil and the air dropped at the oil droplet dropping portion are respectively branched. And a branch passage for blowing in a plurality of directions.

According to a sixth aspect of the present invention, there is provided an oil applying apparatus, wherein the oil drop dropped from the oil drop dropping portion is spread in a plane at the branch portion so as to uniformly supply the oil amount in a plurality of directions. It is provided with a suction net.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

In FIG. 1, an oil application device includes an apparatus main body 1.
Although not shown, a compressor for supplying air 2 to the apparatus main body 1 through an air supply hose 61, an oil container 32 attached to an upper portion of the apparatus main body 1, and a compressor supplied from the apparatus main body 1. A blowing hose 62 for guiding the air 2 and oil 3 that have come to the object to be coated, and blowing out air containing fine oil particles from a blowing nozzle 64 at the tip end shown in FIG. 6. The spray hose 62 has a double pipe structure in which a small-diameter oil supply hose 63 is inserted, and the air 2 sent from the apparatus main body 1 into the space between the spray hose 62 and the oil supply hose 63. It is designed to pass through.

The apparatus main body 1 is divided into an upper member 11 and a lower member 31 for convenience in processing, and a rubber packing 51 for preventing leakage is interposed between them.
The upper member 11 and the lower member 31 are formed in a rectangular parallelepiped shape by attaching mounting bolts (not shown) to the four corners and integrating them. The upper member 11 and the lower member 31 are formed by cutting a metal square material such as aluminum or steel, but may be formed by molding or cutting a synthetic resin or the like.

First, the upper member 11 has an oil container 32
Is formed, and an insertion hole 12a for passing the oil 3 in the oil container 32 is provided. Below this, a through hole 13 penetrating in the horizontal direction is provided. A hose mounting port 13a for mounting an air supply hose 61 is formed at one end of the through hole 13, and an oil passage opening / closing pin 14 for opening / closing an oil supply passage is horizontally provided inside. It is stored movably. The storage portion of the oil passage opening / closing pin 14 in the through hole 13 is
Are formed with three types of inner diameters, large, medium, and small, which can move a predetermined distance in the horizontal direction, and an air communication hole 13b communicating with an air flow control valve 19 described below is formed at the lower portion of the inner wall of the small diameter portion. An oil communication hole 13c communicating with the insertion hole 12a of the mounting recess 12 is formed in the upper portion of the inner wall, and an oil communication hole 13d communicating with the oil flow rate regulating valve 21 described later is formed in the middle diameter portion at the bottom of the inner wall. I have. The oil passage opening / closing pin 14 corresponds to an oil opening / closing means in the claims.

The oil passage opening / closing pin 14 is formed integrally with the small diameter portion and the large diameter portion by cutting a round bar, and two oil passage opening / closing pins 14 are provided at predetermined intervals at the small diameter portion and one at the large diameter portion. O-rings 14a for individual seals are fitted. Further, inside the large diameter portion, a spring housing portion 14b for housing a coil spring 15 for constantly urging the oil passage opening / closing pin 14 toward the hose mounting port 13a side is formed, and the coil spring 15 is an end portion thereof. Are supported by a spring seat 17 mounted via mounting bolts 16.

An air flow path 18 penetrating through the bottom wall is formed vertically below the air communication hole 13b, and a well-known air flow control valve 19 for adjusting the flow rate of the air 2 is provided in the air flow path 18.
Is installed. On the other hand, vertically below the oil communication hole 13d, as shown in FIG.
A well-known oil flow rate adjusting valve 21 for adjusting the flow rate of the oil 3 is provided in the path. A thin tube 24 having an inner diameter of about 1 mm for vertically dropping an oil droplet 23 is fitted in a drop hole 22b formed in the bottom wall 22a of the storage section 22 of the oil flow control valve 21. This thin tube 2
Reference numeral 4 corresponds to an oil drop falling portion in the claims. Furthermore,
An inspection tube 25 made of a transparent synthetic resin having an inner diameter of about 10 mm is inserted into an outer peripheral portion of the thin tube 24, and a confirmation window for confirming a state of the oil droplet 23 falling from the thin tube 24 from outside is inserted in front of the inspection tube 25. 26 are provided. The inside of the inspection tube 25 forms an oil drop falling space 27. Next, as shown in FIG. 3, the lower member 31 has a round hole having a bottom wall at a position corresponding to the opening of the bottom wall of the air flow path 18 and the oil flow path 20 of the upper member 11 on the upper surface. Circle consisting of
Circular recess 3 comprising a round recess having a shaped recess 35a and a bottom wall
3 is formed, and an introduction passage 35 formed by a concave groove for guiding air to two introduction holes 34 is formed by branching off from the circular recess 35a for air. In addition, the oil supply passage 36 branches off from the circular recess 33 for oil and has two introduction holes 36.
An introduction passage 37 formed by a concave groove for guiding the oil 3 to the inside is formed. Further, a through hole 38 having an inner diameter of about 1 mm communicating with a storage space 45 in which a later-described ventilation valve 44 is stored is formed in the bottom wall of the circular recess 33, and the entire bottom wall of the circular recess 33 is formed. A wire mesh 39 of about 100 mesh is placed to cover the wire mesh 39. The wire mesh 39 receives the oil 3 dropped from the oil flow path 20 of the upper member 11 on its upper surface, and spreads the oil 3 over the entire wire mesh 39 by its adsorbing force. This is for sending out the oil 3 evenly, and corresponds to the adsorption network in the claims.

Next, an air passage 40 is formed in each of the two introduction holes 34 so as to extend vertically downward, and a hose mounting space for mounting a spray hose 62 through a connector 48 is formed below the air flow path 40. 41 are formed. On the other hand, an oil flow path 42 is formed in each of the two introduction holes 36 vertically downward, and an opening 43 facing the hose mounting space 41 is formed at an end of the oil flow path 42. The tip of an oil supply hose 63 inserted through the hose 62 can be fitted and connected. The circular recess 3
As shown in FIG. 2, the distal end of the through hole 38 faces the storage space 45 for storing the ventilation valve 44, and the oil drop fall space 27 of the upper member 11 and the storage space 45 through the through hole 38. It communicates with the space 45. The ventilation valve 44 is formed in a substantially cylindrical shape with a bottom, and a rubber sealing material 46 is fitted on the bottom wall, and a ventilation hole 47 is formed in the bottom wall. The ventilation hole 47 is closed by the rubber seal material 46 when application is stopped, and the rubber seal material 46 is pressed and opened by application of outside air due to a pressure difference between the inside and the outside at the time of application.

A rubber packing 51 is mounted between the upper member 11 and the lower member 31.
1, an insertion hole 52 and an insertion hole 53 are formed at positions corresponding to the air flow path 18 and the oil flow path 20 facing the bottom wall of the upper member 11, respectively. The rubber packing 51 is connected to the upper member 11 and the lower member 31 via mounting bolts (not shown).
As a result, air and oil are prevented from leaking to the outside from the insertion hole 52, the insertion hole 53, the introduction passage 35, and the introduction passage 37.

Next, the spray hose 62 has a double pipe structure in which an oil supply hose 63 is inserted, and the air 2 flows outside the oil supply hose 63. A blowing nozzle 64 is attached to the tip of the blowing hose 62. As shown in FIGS. 4 and 5, the blowing nozzle 64 has an oil supply hose 6 inside a substantially cylindrical outer distal end 64a attached to the distal end of the blowing hose 62.
A substantially cylindrical inner end portion 64b attached to the end of the third end portion 3 is provided. The inner end portion 64b is provided with a through hole 64c through which oil flows in a central portion, and is provided on an outer peripheral portion of the end. Three longitudinal grooves 64d are provided along the length direction, and are held at the center of the outer end portion 64a by three protruding plates 64e. Here, the blowing nozzle 64
, The tip shape, the blowing nozzle 6 of the oil supply hose 63
4 The atomization state of the oil 3 may change depending on the retreat distance from the tip, the inner diameter, the blowing pressure of the air 2, the inner diameter of the spray hose 62, or the air 2 may flow back into the oil supply hose 63. Set the optimal conditions.

[0023] In such a configuration, air 2 supplied from the hose mounting opening 13a of the upper member 11, FIG. 1 and FIG.
3 , the air flows through the air communication hole 13 b and the air flow path 18 , and further, the circular recess 35 a of the lower member 31,
After being guided to the introduction passage 35 , the light is branched in two directions and provided through the two introduction holes 34 at the upper portions of the two connection tools 48, respectively.
The two hose mounting spaces 41 passing through the through hole 48a
And flow through the two spray hoses 62 . These paths form the air supply path of the claims. On the other hand, the oil 3 in the oil container 32 is indicated by a dashed arrow in FIGS.
Thus , the flow from the insertion hole 12a of the upper member 11 to the through hole 13, the oil communication hole 13d, the oil flow path 20, the drop hole 22b, the thin tube 24, the inspection tube 25, and further, the circular recess 3 of the lower member 31
3 and branching in two directions, two introduction passages 37 and introduction holes 3
6 to 2 oil supply hoses 63 respectively. These paths form the oil supply path of the present invention. In addition,
In this embodiment, in order to spray two workpieces,
Air 2 and oil 3 are branched in two directions by lower member 31
The branched air 2 and oil 3 are combined into one set to
Although it is shown that it is guided to the chisel 64 and sprayed,
Thus, for example, only one blowing nozzle 64 is provided.
Of course, it can be done. In this case, air 2 and oil
3 is a lower member 31 which is directly connected to one piece without branching in two directions.
The oil that is guided to the blowing nozzle 64 and merges here to be atomized
3 will be blown out together with the air 2.

Next, the operation and operation of the oil application device of the present embodiment thus configured will be described. When the air 2 is not supplied from the compressor (not shown) to the apparatus main body 1, the oil passage opening / closing pin 14 housed in the through hole 13 is actuated by the urging force of the coil spring 15 as shown in FIG. In this state, the O-ring 14a at the center of the oil passage opening / closing pin 14
The passage to 3b is blocked, and the oil 3 is not supplied into the oil supply passage. The rubber seal material 46 of the ventilation valve 44 of the lower member 31 is in close contact with the bottom wall of the ventilation valve 44, and the ventilation hole 47 is closed.

When air and oil are blown on the workpiece,
The open / close valve of the compressor (not shown) is opened, and air 3 is sent into the hose mounting port 13a of the upper member 11 of the apparatus main body 1. Then, the air 3 flows through the inside of the apparatus main body 1 and is blown out from the blowing nozzle 64 of the blowing hose 62. On the other hand, the tip end surface of the oil passage opening / closing pin 14 in the through hole 13 of the upper member 11 is pressed by the air 3 and moves rightward in the drawing against the urging force of the coil spring 15. When the oil passage opening / closing pin 14 is in contact with the spring seat 17 in FIG.
A passage is formed between the ring 14a and the inner wall of the through hole 13, and is guided from the oil container 32 to the oil communication hole 13a, and the oil passage 2
After dropping 0, the flow rate is adjusted to a predetermined flow rate by the oil flow rate adjusting valve 21, and further drops from the drop hole 22 b of the storage section 22 to the lower end along the inner wall of the thin tube 24. The oil 3 is a vent valve 4 described later.
The droplets fall into the oil droplet falling space 27 in a drip state in association with the air pressure caused by the inflow of outside air from the oil droplets 4. At this time, since the inspection tube 25 is formed of a transparent resin material, the falling state of the oil droplets can be checked from the outside, and by adjusting the air pressure and the oil flow control valve 21 while observing the state, the optimum state can be obtained. Can be dropped. Therefore,
The oil 3 is supplied in an intermittent state, not in a state in which the oil supply path is fully filled.

Thereafter, the oil droplets are deposited on the circular recess 33 of the lower member 31.
Falls on the wire net 39, branches into two introduction passages 37, and is guided to the introduction holes 36. At this time, the oil 3 spreads to the front surface of the wire mesh 39 by the attraction force of the wire mesh 39, and thus flows almost uniformly in two directions. Then, the oil 3 is guided from the oil supply hose 63 to the tip of the blowing nozzle 64. The air 2
, The tip end portion becomes negative pressure, and the oil 3 is atomized and sprayed on the workpiece. The oil 3 in the oil container 32 is supplied to the blowing nozzle 64 by a negative pressure in the oil supply path and a head difference due to a head drop.

Here, the inside of the oil droplet falling space 27 of the upper member 11 is in a negative pressure state close to vacuum due to the blowing of the air 2, but the rubber sealing material 46 of the ventilation valve 44 of the lower member is pulled inward, and As shown in FIG. 2, a vent hole 47 is opened,
Since the outside air is guided from the ventilation hole 47 through the through hole 38 and the circular concave portion 33 into the oil droplet falling space 27, the oil droplet falling space 27 is in a state close to the atmospheric pressure. Therefore, the oil 3 that has propagated in the thin tube 24 drops as oil droplets due to the head difference from the oil container 32, and the blowing nozzle 6
Guided to 4.

To end the spraying, if the open / close valve of the compressor is closed, the oil passage opening / closing pin 14 moves to the left as shown in FIG. 7, and the supply of the oil 3 is also ended. After the spraying is completed, the ventilation hole 47 is closed by the rubber seal material 46 of the ventilation valve 44 to prevent the oil 3 from leaking to the outside.

Since the apparatus main body 1 operates as described above,
Unlike the conventional case, the oil 3 is not supplied in a state of filling the oil supply path, and the interaction between the thin tube 24 and the ventilation valve 44 always checks the optimum oil drop state through the check window 26. The oil 3 can be intermittently supplied. As a result, it is possible to stably supply and apply a very small amount of oil, which is several tenths of that in the past, to save resources, The health of the elderly can be prevented from being harmed. Then, the problem that oil is repelled by a cutting tool that cuts at a high speed is eliminated, and oil can be uniformly applied to the cutting tool. Thereby, the effects of cooling by air and lubrication by oil application can be reliably obtained.

When the air opening / closing valve is opened / closed, the oil passage opening / closing pin 14 of the apparatus main body 1 moves left and right accordingly to control the supply of the oil 3, so that every time the spraying is performed, the operator needs to open the air. It is only necessary to operate the opening / closing valve 2 and once the oil flow rate adjusting valve 21 is set once, the trouble of re-adjusting each time of spraying can be omitted, and workability is remarkably improved.

In the above embodiment, the lower member 31 is provided with two-way branches of the air 2 and the oil 3, and two blow hoses 62 and two oil supply hoses 63 are used for two blows.
Although it is designed to be sprayed from the outlet nozzle 64 , the present invention is not limited to this when the present invention is implemented.
For example, as described above, there is no branch and only one spray
Connect the hose 62 and one oil supply hose 63 to one
It may be guided to the chisel 64 and sprayed , or
3 or more spray hoses 62 and oil supply hoses 63
Provided above and guided to each of three or more blowing nozzles 64
It may be assumed to apply.

In the above embodiment, the air flow control valve 1
9 and the oil flow control valve 21 are mounted, but may be omitted if oil drops can be stably dropped without these components.

Various oils can be used as the oil to be applied. However, if an oil such as a vegetable oil is used,
Good for worker health.

[0034]

As described above, the oil applicator according to the present invention has an air supply passage for guiding the air for application to the blow nozzle.
And an oil supply passage for guiding the oil in the oil vessel to the outlet nozzle, and the oil droplets drop unit for dropping the oil drops provided in the middle of the oil supply passage, the outside air falls space formed in the oil droplets falling portion And a vent valve for preventing the dropped oil droplets from flowing back and leaking to the outside. Therefore, the oil can be intermittently supplied by the interaction between the oil drop falling portion and the ventilation valve. As a result, it is possible to stably supply and apply a very small amount of oil compared to the conventional method, thereby saving resources and improving the working environment and preventing workers' health from being harmed. Thus, the effects of cooling by air and lubrication by applying oil can be obtained.

In the oil application device according to the third aspect, an inspection window is formed for externally confirming the state of the oil droplet dropping portion at the oil droplet falling portion. Therefore, in particular, the oil can be intermittently supplied while always checking the optimal oil drop state through the check window.

Further, in the oil applying apparatus according to a fourth aspect, an oil opening / closing means for opening / closing an oil outflow passage from the oil container in conjunction with supply and stop of air from an air supply passage is provided below the oil container. Is provided. Therefore, in particular, the oil passage opening / closing pin moves and controls the supply of oil only by opening / closing the air opening / closing valve, so that every time spraying is performed, the operator can save the trouble of adjusting the oil flow rate. , Workability is remarkably improved.

The oil application device according to claim 5 is
A branch path is provided in which the oil and air dropped in the oil dropping section are branched and blown out in a plurality of directions. Thus, in particular, one oil application device can apply one workpiece from a plurality of directions or apply to a plurality of workpieces.

[Brief description of the drawings]

FIG. 1 is a front view showing an apparatus main body during application of an oil application apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a front view of a blowing nozzle used in the oil application device according to the embodiment of the present invention.

FIG. 5 is a perspective view of the blowing nozzle of FIG. 4;

FIG. 6 is a front view showing the oil application device according to the embodiment of the present invention.

FIG. 7 is a front view showing the apparatus main body when application of the oil application apparatus according to the embodiment of the present invention is stopped.

FIG. 8 is a cross-sectional view taken along the line CC of FIG. 1;

FIG. 9 is a schematic view showing a conventional oil application device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Air 3 Oil 14 Oil passage opening / closing pin 15 Coil spring 18 Air flow path 20 Oil flow path 23 Oil droplet 24 Thin tube 25 Inspection tube 26 Confirmation window 32 Oil container 35, 36 Introductory passage 39 Wire mesh 44 Vent valve 64 Blow-out nozzle

Continuation of the front page (56) References JP-A-8-52391 (JP, A) JP-A-3-36747 (JP, U) JP-A-60-108359 (JP, U) (58) Fields surveyed (Int .Cl. ⁶ , DB name) B23Q 11/10 B05B 7/26-7/32

Claims (6)

(57) [Claims] And 1. A air supply path for guiding the introduction of which is fed to the coating air blowing nozzle, by introducing a feed oils from the oil container to said outlet nozzle
Guides and flows through the air supply path at the blowing nozzle
An oil supply path to be mixed with the air that has been introduced; an oil drop section provided in the middle of the oil supply path to drop oil drops; and introducing outside air into a fall space formed in the oil drop section. flow of the oil droplets fall into the drop space outside air
An oil applying device, comprising: a vent valve for preventing the gas from flowing backward in the entering direction and leaking to the outside. 2. The oil applicator according to claim 1, wherein the oil dropping section is formed by a thin tube having an inner diameter that allows the oil drop to fall as an oil drop. 3. The oil application device according to claim 1, wherein an inspection window for externally confirming a state of the oil droplet dropping portion at the oil droplet falling portion is formed . 4. An air supply passage below the oil container .
Supplying et air, oil as claimed in any one of claims 1 to 3, characterized in that the oil opening and closing means for opening and closing the oil outlet passage from the oil container in conjunction with the stop provided Coating device. 5. The method according to claim 1, wherein a branch path is provided for branching the oil and air dropped at the oil dropping portion and blowing the oil and air in a plurality of directions. The oil applicator according to the above. 6. The branch according to claim 5, wherein an oil- absorbing net is provided at the branching portion so as to spread the oil droplets dropped from the oil-dropping portion in a plane so as to uniformly supply the oil amount in a plurality of directions. The oil applicator according to the above.