JPH05277317A - Mist recovering device - Google Patents

Abstract

PURPOSE:To increase the recovering efficiency of mist and simultaneously to facilitate the work for maintaining the recovering efficiency. CONSTITUTION:In a mist recovering device where a filter 10 of water-absorptive or oil-absorptive, such as a sponge is arranged in a mist introducing pass 2 and mist passing through the filter 10 is absorbed, squeezing means 14a, 14b for pressing the filter 10 surface to squeeze out the absorbed mist are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mist collecting device for collecting mist generated by a coolant scattered during cutting of a work in various machine tools such as a lathe and a cylindrical grinder. ..

[0002]

2. Description of the Related Art Heretofore, there has been proposed a mist collecting device in which a water-absorbing or oil-absorbing filter such as a sponge is arranged in a mist introducing passage to absorb mist passing through the filter.

[0003]

However, in the mist collecting device, when the filter becomes saturated with mist, the filter cannot absorb the mist, and the mist collecting efficiency is significantly reduced. Therefore, it was necessary to take out the filter and remove the absorbed mist each time.

The present invention has been made to solve the above problems, and an object thereof is to improve the mist recovery efficiency and to facilitate the work for maintaining the recovery efficiency. To provide a device.

[0005]

In order to solve the above problems, the present invention provides a mist introducing passage with a water-absorbing or oil-absorbing filter such as a sponge to absorb the mist passing through the filter. The gist of the mist collecting device is that it is provided with a squeezing means for pressing the surface of the filter to squeeze out the absorbed mist.

[0006]

Therefore, according to the present invention, the mist introduced into the mist introducing passage is absorbed by the water absorbing or oil absorbing filter such as the sponge disposed in the passage. And
The mist absorbed by the filter is squeezed and collected by the squeezing means pressing the surface of the filter.

[0007]

【Example】

(First Embodiment) A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows the appearance of the mist collecting device, and FIG.
Shows the internal structure of the device. As shown in FIG. 3, a mist collecting chamber 2 as an introduction passage is provided inside the center of the case body 1 of the device, and a suction port 3 is provided on the front side of the mist collecting chamber 2. A fan 4 for introducing the mist of the cutting machine M into the mist collecting chamber 2 is connected to the suction port 3. The suction port 3 guides the mist generated when the coolant or the like scatters during the cutting process by the cutting machine M to the mist collecting chamber 2.

As shown in FIG. 1, a mist collecting passage 5 is formed in the lower inside of the mist collecting chamber 2 so as to incline toward the front side, and a drain tank is provided at one end of the mist collecting passage 5. Discharge port 5a leading to (not shown)
Is provided.

Further, a pair of elongated holes 6 are vertically formed on both side walls of the case body 1, and a sealing rubber plate 7 is attached to the both side walls with an adhesive or the like. It is worn. The seal rubber plate 7 has a cut 8 formed at a position facing the elongated hole 6. A shaft 9 is inserted through the elongated hole 6 and the cut 8 and is guided into the mist collecting chamber 2. Therefore, for example, even if the mist may leak from the elongated hole 6 when the shaft 9 moves in the vertical direction, the sealing rubber plate 7 blocks leakage to the outside.

Next, the structure of the mist collecting chamber will be described with reference to FIGS. A filter 10 is provided in the mist collection chamber 2. The filter 10 has a fixed plate 11 having a large number of slits 13.
And sponges 12a and 12b for absorbing mist fixed to both surfaces of the fixing plate 11. That is, the mist guided to the filter 10 is absorbed by the sponge 12a on the front side. Further, the unabsorbed mist passes through the slit 13 and is guided to the rear side sponge 12b to be absorbed.

The sponge 12 on the front and rear sides thereof
Rollers 14a and 14b for squeezing out the absorbed mist are arranged in pressure contact with a and 12b. Through-holes 15 are provided through the rollers 14a and 14b, respectively, and shafts 9a and 9b are rotatably inserted through the through-holes 15. A threaded portion 16 is provided on both ends of the shafts 9a and 9b.
a, 16b, 17a, 17b are provided, and the screw part 1 thereof is provided.
6a, 16b, 17a and 17b are formed to project outside the case body 1.

A rodless cylinder 18 for driving the rollers 14a and 14b so as to be vertically movable on the surfaces of the sponges 12a and 12b is provided on the screw portions 16a and 16b side. And this rodless cylinder 18
Is composed of a rail 19 and a block 20, and the block 20 is slidably moved up and down on the rail 19 by a signal from a controller (not shown). The block 20 includes an attachment 21 and a plurality of bolts 22.
(6 in this embodiment) are fixed. And
Shafts 9a, 9b inserted through the rollers 14a, 14b
The threaded portions 16 a and 16 b of the above are screwed to the attachment 21. Therefore, when the block 20 of the rodless cylinder 18 moves on the rail 19, the rollers 14a, 14b move while pressing the sponges 12a, 12b under pressure, and squeeze out the mist absorbed by the sponges 12a, 12b. There is.

Also, the screw portions 17a, 17 of the shafts 9a, 9b
Guide rollers 23a and 23b are inserted into b and are attached to caps 24a and 24b. Also, the shafts 9a and 9b
Of the guide rollers 23a,
23b is inserted. The guide rollers 23a, 23b are roller guides 25a, 25b provided on one side surface of the recovery chamber 2 in a vertically arranged manner.
It is housed in. And the guide roller 23
When the rodless cylinder 18 moves up and down, a and 23b are provided so that they can move up and down while rotating inside the groove portions 26a and 26b formed in the roller guides 25a and 25b.

A discharge port 27 is provided at the rear end of the case 1 so that the purified mist is discharged into the atmosphere. Next, the operation and effect of the mist collecting device configured as described above will be described.

First, when the rodless cylinder 18 is driven, the rollers 14a and 14b move to the sponges 12a and 12b.
It moves up and down while pressing the top. Therefore, sponge 12
The mist adhering to a and 12b is sponge 12a and 12b.
It is squeezed out by the rollers 14a and 14b that move up and down while being pressed against it. At this time, the mist is guided to the mist collecting passage 5 without being leaked to the outside of the case 1 by the sealing rubber plates 7 attached to both side surfaces of the case 1, and the discharge port 5a.
Is collected in a drain tank (not shown).

Then, the purified mist is discharged into the atmosphere from the discharge port 27 provided at the rear end of the case 1. As described above, according to the mist collecting apparatus of the present embodiment, the fixing plate 11
A water-absorbing or oil-absorbing sponge 12a such as
Rollers 14a and 14b for fixing 12b and squeezing out the mist adhering to the sponges 12a and 12b, and a rodless cylinder 18 for driving the rollers 14a and 14b so as to be vertically movable on the sponges 12a and 12b are provided. Thus, the mist adhering to the fixed plate 11 can be efficiently collected, clean air is discharged into the room, and the work is greatly improved without polluting the room.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The filter part having a different structure from that of the first embodiment will be described in detail.

As shown in FIG. 4, a filter 28 is fixed to the inner peripheral surface of the mist collecting chamber 2. As shown in FIGS. 5 and 6, the filter 28 includes a base 29 and a sponge 30, and the sponge 30 is provided on the front surface of the base 29.
Are attached by a plurality of screws 31. And
A hole 32 is formed on the rear surface of the base 29 so that the mist can pass therethrough. A mesh plate 33 is sandwiched between the base 29 and the sponge 30 to allow the mist to pass through and prevent the sponge 30 from bending when the sponge 30 is pressed.

Further, as shown in FIG. 4, an outer frame 34 is provided on the inner peripheral surface of the mist collecting chamber 2 on the upstream side of the filter 28.
Are fixed, and holes 34a are formed in the outer frame 34 thereof so that the mist can pass therethrough. The outer frame 34 has the same structure as the filter 28, and the base 3
A filter 35 including 6 and a sponge 37 is detachably provided.

A locking metal fitting 38 is attached to the upper portion of the filter 35, and the locking metal fitting 38 is attached to the pin 3.
It is rotatably locked to the shaft 9 and rotates about the pin 39. Further, as the filter 35 rotates about the pin 39, the sponge 37 of the filter 35 and the sponge 30 of the filter 28 are pressed against each other, and the mist attached to the sponges 30 and 37 is squeezed out. There is.

A drive motor 40 is fixedly attached to the outer wall of the case 1, and a pulley 41 is attached to its rotation shaft. Further, a ball screw 43 whose both ends are supported by bearings 42 is provided on the lower surface of the mist collecting chamber 2, and a pulley 44 is fixed to the base end of the ball screw 43. A belt 45 is wound around the pulleys 41 and 44 to transmit the rotation of the drive motor 40 to the ball screw 43.

A plate 46 is screwed into the ball screw 43. The plate 46 extends upward, and a long hole 47 is formed in the side surface thereof. A shaft pin 48 attached to the side surface of the base 36 of the filter 35 is inserted into the long hole 47. The shaft pin 48 has the long hole 47.
Is vertically movably inserted through the plate 46 and
Are prevented from rotating together with the ball screw 43.
The drive motor 40 rotates forward and backward, and the rotation is transmitted to the ball screw through the pulley 41, the pulley 44, and the belt 45. When the ball screw 43 rotates in the forward and reverse directions, the plate 46 moves in the horizontal direction. At this time, the filter 35 rotates about the pin 39 while moving the shaft pin 48 up and down in the elongated hole 47. And the sponge 3 of the filter 35
The mist attached to the sponges 30 and 37 is squeezed out by pressing the sponge 30 of the filter 28 against the sponge 7.

Next, the operation and effect of the mist collecting device constructed as described above will be described. When the mist is introduced into the recovery chamber 2 and the drive motor 40 is driven to rotate in the forward direction by a command signal from a control device (not shown) or the like, the forward rotation is passed through the pulleys 41, 44 and the belt 45 as shown in FIG. Is transmitted to the ball screw 43. Then, the plate 46 moves to the pulley 44 side on the ball screw 43. At this time, the filter 35 rotates around the pin 48 toward the filter 28 side while moving the shaft pin 48 attached to the lower portion thereof into the elongated hole 47 of the plate 46. Then, the sponge 37 of the filter 35 and the filter 28
When the sponge 30 is pressed, the sponge 3
The mist adhering to 0 and 37 is squeezed out.

When the mist is squeezed out from the sponges 30 and 37, the drive motor 40 rotates in the opposite direction to the rotation, and the ball screw 43 rotates in the reverse direction. Then, the plate 46 moves to the side opposite to the pulley 44. At this time, the filter 39 rotates around the pin 48 toward the side opposite to the filter 28 while moving the shaft pin 48 attached to the lower portion thereof into the elongated hole 47 of the plate 46. Then, the filter 35 is mounted on the outer frame 34.

As described above, by pressing the sponges 30 and 37 under pressure, the mist adhering to the sponges 30 and 37 is squeezed out, so that the mist collecting operation can be easily performed.

The present invention is not limited to the above embodiments, but may be configured as follows, for example, without departing from the spirit of the invention. (1) In the first embodiment, the rodless cylinder 18 is used as the driving means for driving the rollers 14a and 14b as the diaphragm means, but other driving means such as a linear motor may be used. .. Alternatively, it may be configured to be manually moved up and down.

(2) In the first embodiment, the sponge 12 is used.
The mist is squeezed out of the sponges 12a and 12b by the vertical movement of the rollers 14a and 14b on the surfaces a and 12b. However, as shown in FIG. The sponge filter 49 is formed by a plurality of (in this embodiment, four) pulleys 50 arranged in an annulus, and one of the pulleys 50 has a drive motor 5
Connect 1 The sponge filter 49 is configured to rotate in the recovery chamber 2 when the motor 51 rotates. Further, the roller 5 is attached to at least one of the pulleys 50 via a sponge filter 49.
Press 2 together. And the sponge filter 49
When the motor is rotated by the motor 51, the mist may be squeezed out between the pulley 50 and the roller 52 and guided to the mist collecting passage 5.

The method of engaging the sponge filter 49 and the pulley 50 is, for example, as shown in FIG.
May be provided with an engaging pin 50a which is engageable with the through hole 49a.

Further, an actuator 53 such as an electromagnetic solenoid is attached to the roller 52, and the roller 53 is attached to the sponge filter 49 by the actuator 53.
Alternatively, the roller 52 may be configured to be capable of pressing and retracting, and the roller 52 may be moved to the pressing position only when the diaphragm operation is performed.

Further, as shown in FIG.
Alternatively, a spatula 54 may be used. The spatula 54 may be attached to a driving means such as a rodless cylinder 18 instead of the rollers 14a and 14b so as to squeeze out the mist.

(3) In the second embodiment, the mesh plate 33 is used.
May be a punched metal having a plurality of holes configured to prevent bending of the sponges 30 and 37 during pressure contact and at the same time allow mist to pass through.

(4) In the above embodiment, as shown in FIG. 10, the rodless cylinder 22, the linear motor, the drive motor 40, which drives the throttle means 55 such as the roller 14a, the filters 28 and 35, and the spatula 54 to perform a throttle operation. The driving timing for driving the driving means 56 such as 51 and the actuator 53 has not been described in detail. So, for example,
A pressure sensor 57 for detecting the atmospheric pressure in the mist recovery chamber 2 is provided on the suction port side with respect to the filters 10, 28, 35, 49, and drives the driving means 56 based on the detection signal of the pressure sensor 57. A drive control device 58 is provided.
The drive controller 58 filters the filters 10, 28, when the atmospheric pressure in the recovery chamber 2 reaches a certain pressure or more.
The drive means 56 may be driven when it is determined that 35 and 49 are clogged by the mist. At this time, the mist attached to the filters 10, 28, 35, 49 is squeezed out by the squeezing means 55 driven by the driving means 56 and collected.

(5) In the above-described embodiment, only one squeezing means composed of the filters 10, 28, 35 and the sponge filter 49 is formed in the mist collecting chamber 2. However, in order to improve the mist collecting efficiency, the filter is used. 10, 2
It is also possible to use a plurality of diaphragm means composed of 8, 35 and the sponge filter 49.

(6) Further, in the above-mentioned embodiment, an electrostatic dust collector may be provided on the downstream side of the diaphragm means consisting of the filters 10, 28 and 35 and the spin filter 49.

[0036]

As described above in detail, according to the present invention, there is an excellent effect that the recovery efficiency of mist can be enhanced and the operation for maintaining the recovery efficiency can be facilitated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a mist collecting device according to a first embodiment.

FIG. 2 is an exploded perspective view of a filter and the like provided in the mist collecting chamber in the first embodiment.

FIG. 3 is a cross-sectional view showing a mist collecting device in the first embodiment.

FIG. 4 is a side sectional view showing a mist collecting device according to a second embodiment.

FIG. 5 is a front view showing a filter according to a second embodiment.

FIG. 6 is a sectional view showing a filter according to a second embodiment.

FIG. 7 is a sectional view showing another example of the present invention.

FIG. 8 is an exploded front view of essential parts showing another example of the present invention.

FIG. 9 is a cross-sectional view showing another example of the present invention.

FIG. 10 is an electrical block diagram showing another example of the present invention.

[Explanation of symbols]

2 ... Mist collection chamber as means for introducing mist, 10, 2
8, 35 ... Filter, 12a, 12b ... Sponge, 1
4a, 14b, 52 ... Pressure contact roller as a squeezing means,
30, 37, 49 ... Sponge filter, 33 ... Mesh plate,
29, 36 ... Base

Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B23Q 11/10 Z 7908-3C B24B 55/12 7234-3C B30B 9/02 Z

Claims (4)

[Claims] 1. A water-absorbing or oil-absorbing filter (10, 28, 35) such as a sponge is disposed in the mist introducing passage (2) to absorb mist passing through the filter (10, 28, 35). In the mist collecting device configured as described above, the squeezing means (14a, 14) for pressing the surfaces of the filters (10, 28, 35) to squeeze out the absorbed mist.
b, 28, 35, 52, 54) is provided. 2. The filter (10) comprises a slit (1
3) or a fixed plate (11) having holes formed therein, and a water-absorbing or oil-absorbing sponge (12a, 12b) attached to at least the front surface of the fixing plate (11). The mist collecting device according to claim 1. 3. The mist collecting device according to claim 1, wherein the filter (10) is composed of an endless belt-shaped sponge filter (28). 4. The filter (28, 35) is a base (2).
9, 36) and the sponge filter (30, 37), and the base (29, 36) and the sponge filter (3).
2. The mist collecting device according to claim 1, wherein a mesh plate (33) is sandwiched between 0, 37) so that the sponge filter (30, 37) does not bend.