JP2003266271A - Chip discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chip discharging device having a liquid jet means having a simple structure and capable of jetting a jet stream having uniform spread without causing clogging and adjusting force of a jet stream without requiring separate equipment. <P>SOLUTION: In this chip discharging device for separating chips from turbid coolant D containing chips discharged from a machine tool and discharging them, the chip discharging device has the liquid jet means 9 for removing chips remaining in the device, and the liquid jet means 9 has a liquid discharge pipe having one or a plurality of liquid jet holes and a diffusion plate for reflecting and dispersing a jet stream from the liquid jet holes. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to metal chips such as iron and aluminum discharged from a machine tool when performing metal processing such as cutting and grinding with a machine tool, and chips such as grinding chips. The turbid coolant containing it was put into the turbid coolant treatment tank, and only the chips were captured by the hinge belt and drum-shaped filter installed in this turbid coolant treatment tank, and scooped out of the tank. The present invention relates to a chip discharge device.

[0002]

2. Description of the Related Art When a metal material is cut or ground by a machine tool, a coolant such as cutting oil or water in which a lubricant is dissolved is used to cool a cutting tool, a grinding tool, a material to be processed, or the like. The cloudy coolant containing the chips used and discharged from the machine tool after use is processed by a chip discharge device so that only the chips are captured and collected.

FIG. 8 shows a conventionally used chip carrying-out device. This chip discharging device is provided with a cloudy coolant processing tank 2 into which a cloudy coolant D containing chips discharged from a machine tool M is charged, and an endless end installed in the cloudy coolant processing tank 2 in a circulating state. And a hinge belt 4. Turbid coolant processing tank 2 is 2a, 2
The endless hinge belt 4 is spaced apart from and covers the endless hinge belt 4.

The chips k contained in the cloudy coolant D introduced into the cloudy coolant treatment tank 2 are scooped up by the hinge belt 4 along the partition plate 6 to the outside of the cloudy coolant treatment tank 2 and the hinge belt 4 Is discharged from the chip discharge portion B located at the upper end of the circumference to the chip collection box F or the like. A drive sprocket 4d for transmitting power to the hinge belt 4 is arranged at the upper end of the hinge belt 4 together with a drive motor, while the hinge belt 4 rotates around the lower return side 4b toward the upper transport side 4a. A cylindrical member 5 is provided in the section A.

Further, there is provided a filtration drum 8 having a filtration filter 8a for filtering the coolant stored in the cloudy coolant treatment tank and discharging the coolant to the outside.
The filtered coolant C flows into the clean coolant storage tank E provided outside the cloudy coolant treatment tank and flows out into the outflow hole 8
It is discharged and recovered via b. On the other hand, the residual chips that do not pass through the filtration drum 8 are scooped up again by the hinge belt 4 and discharged from the chip discharging portion B. In such a filter drum 8, since the filter 8a is gradually clogged, the liquid jetting means 9 for filter cleaning is provided, and the cleaning fluid is jetted from the liquid jetting means 9 to cut the filter adhering to the surface of the filter 8a. The powder is blown away. Figure 9
The structure of the liquid ejection means 9 used for the conventional chip discharge device is shown. The purified liquid thus supplied from the supply pipe 9a to the liquid discharge pipe 9b (called a spray bar) spreads in a fan shape from the liquid ejection hole 9c having a plurality of fan-shaped nozzles provided in the liquid discharge pipe 9b. It is ejected as the ejected flow S that it has.

[0006]

However, since the liquid jetting means used in such a conventional chip carrying-out device normally uses the clean coolant discharged to the clean coolant storage tank as the cleaning liquid, The purification liquid contains fine solids that have passed through the filtration filter, and the solids are fan-shaped nozzles of the liquid ejection holes 9c or the liquid discharge pipe 9
It was gradually accumulated inside b and could not function as a liquid ejecting means.

Further, in order to make the jet flow jetted from the liquid jetting means have a uniform fan-shaped spread, it is necessary to finely process the shape of the fan-shaped nozzle, which causes an increase in manufacturing cost. . Moreover, in order to adjust the force of the jet flow, it is necessary to separately install a device such as a valve or orifice for adjusting the pressure and amount of the liquid supplied to the liquid discharge pipe, which causes an increase in the number of parts of the device. Was there.

Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional chip discharging device, to prevent the occurrence of clogging, to have a simple structure, and to provide a jet having a uniform spread. It is an object of the present invention to provide a chip discharging device having a liquid ejecting means capable of ejecting a flow and capable of adjusting the force of the ejected flow without requiring a separate device.

[0009]

In order to achieve the above-mentioned object, the present invention according to claim 1 is a chip for separating and discharging the chips from a cloudy coolant containing the chips discharged from a machine tool. In the discharging device, the chip discharging device has a liquid ejecting means for removing the chips accumulated in the device, and the liquid ejecting means is a liquid having one or a plurality of liquid ejecting holes. It is configured to have a discharge pipe and a diffusion plate that reflects and disperses the jet flow from the liquid jet hole.

The present invention according to claim 2 provides the invention according to claim 1.
In addition to the configuration of the invention according to, the liquid ejecting means has a structure in which a liquid ejecting hole is provided on a side surface of the liquid ejecting pipe, and moreover, the liquid ejecting means ejects the liquid ejecting hole from the liquid ejecting hole at the end thereof. The configuration is such that a purge means for discharging the liquid that has not been provided is provided.

Further, in the invention according to claim 3, in addition to the structure of the invention according to claim 1 or 2, the diffusion plate is provided with a position of a liquid ejection hole and a liquid ejection direction from the liquid ejection hole. On the other hand, the angle and / or the arrangement can be changed, and the change allows the reflection / dispersion state of the jet flow from the liquid jet hole to be adjusted.

The liquid jetting means in the present invention is a liquid jetting means installed for preventing clogging of a filtration filter provided in a chip discharging device, or deposition of chips on the discharge passage of cloudy coolant. The installation location is not particularly limited as long as it is a liquid ejection means such as a liquid ejection means installed for prevention so long as it is a liquid ejection means for removing the chips accumulated in the chip discharging device.

[0013]

Since the present invention has the above-mentioned device configuration, it has the following unique operation.

First, according to the first aspect of the invention, the liquid ejecting means provided in the chip discharging device has a structure in which the liquid ejecting hole is provided on the side surface of the liquid ejecting pipe, and moreover, from the liquid ejecting hole. Since the structure is equipped with a diffuser plate that reflects and disperses the jet flow, the clogging is suppressed in the liquid jetting means, and the chip discharging device can be operated for a long period of time without requiring special maintenance. Is possible.

Further, according to the present invention of claim 2, in addition to the function of the invention of claim 1, since the purging means is provided at the end of the liquid discharge pipe, the liquid is not ejected from the liquid ejection hole. The liquid is quickly discharged, the clogging of the liquid jetting means is further eliminated, and the maintenance work of the chip discharging device is further reduced.

Furthermore, according to the present invention of claim 3,
In addition to the effect of the invention according to claim 1 or claim 2, the angle and / or the arrangement of the diffusion plate can be changed with respect to the position of the liquid ejection hole and the ejection direction of the liquid from the liquid ejection hole. Since the configuration is adopted, it is possible to change the reflection / dispersion state of the jet flow from the liquid jet hole.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 which is an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view showing a usage mode of a chip carrying-out device which is Embodiment 1 of the present invention.
This chip discharging device is provided with a liquid jetting means 9 for filter cleaning in order to prevent clogging of the filtration filter 8a. The liquid jetting means 9 is composed of a liquid discharge pipe having one or a plurality of liquid jetting holes on its side surface, and a diffusion plate for reflecting / dispersing the jet flow from the liquid jetting holes.
The configuration other than the liquid jetting means 9 is the same as that of the conventional chip discharging device described above, and therefore the reference numerals of the corresponding configurations are the same as those used in FIG. 8 and the description of each configuration is omitted. .

The liquid jetting means will be described in detail with reference to FIG. 2A is an enlarged perspective view of the liquid jetting means 9, and FIG. 2B is a sectional view taken along the line AA of FIG. 2A. 9b is a liquid discharge pipe (called a spray bar), and the cleaning liquid W is supplied to this liquid discharge pipe via a supply pipe (not shown). As the cleaning liquid, normally, the clean coolant after filtration discharged to the clean coolant storage tank is used. Liquid discharge pipe 9
One or more liquid ejection holes 9c are provided on the side surface of b, and the cleaning liquid is ejected from this hole. Further, a diffusing plate 9e having a bow-shaped cross section for reflecting / dispersing the jetted cleaning liquid is installed separately from the liquid discharge pipe 9b.

The cleaning liquid ejected from the liquid ejection hole 9c is
At the same time as being reflected by the diffusing plate 9e, it is dispersed as a droplet by the impact that strikes the diffusing plate. Therefore, it is not necessary to use a fan-shaped nozzle as in the related art as the liquid ejection hole 9c, and it can be formed by simple drilling. The size of the liquid ejection hole 9c is not particularly limited as long as it is sufficiently larger than the size of the solid component contained in the cleaning liquid.

By changing the size and installation position of the diffusion plate 9e, the reflection / dispersion state of the cleaning liquid ejected from the liquid ejection hole 9c can be changed. 3 and 4 show the relationship between the size and installation position of the diffusion plate and the reflection / dispersion state of the jet flow. As can be seen by comparing FIGS. 3A and 3B, when the distance between the diffusion plate 9e and the liquid ejection hole 9c is the same (L1) and only the incident angle of the liquid is large (incident angle α < The incident angle β) and the momentum of the reflected / dispersed jet S are weakened. Further, as can be seen by comparing FIGS. 3B and 3C, when the incident angles of the liquid are equalized (incident angle β) and the distance between the diffusion plate 9e and the liquid ejection holes 9c is increased (L1 <L2) is the jet flow S that is also reflected and dispersed
Will lose momentum. On the other hand, as shown in FIG. 4, when the incident angle is not changed (incident angle γ) and the distance from the intersection of the ejection direction and the reflector to the tip of the reflector is increased (M1 <M
2) The momentum of the jet flow S becomes weak. As described above, even if the shape and size of the liquid ejection holes 9c are not changed, it is possible to adjust the momentum and the degree of dispersion of the ejection flow only by changing the size and installation position of the diffusion plate 9e.

The liquid jetting means used in this chip discharging device is provided with a purging means 9d at the tip of the liquid discharging pipe 9b for discharging the non-jetted cleaning liquid to the outside. The purging means 9d is composed of a conical nozzle having an open tip. By adjusting the diameter of this nozzle, the ejection pressure of the cleaning liquid ejected from the liquid ejection hole 9c can be adjusted. In this example,
Although the purging unit 9d is directly connected to the liquid discharge pipe 9b, it may be installed at a place apart from the liquid ejecting unit 9 via a pipe or a hose, if necessary. Further, as the purging means, an orifice, a valve, or the like can be used in addition to the nozzle described above.

Next, a second embodiment which is another embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a perspective view showing a second embodiment of the present invention.

The chip discharging device shown as the second embodiment is provided with a drain hole 10 on the side wall of the cloudy coolant processing tank 2,
Drain the cloudy coolant to the outside. The discharged cloudy coolant passes through the slope 11 having an inclination and is collected in the filter net 12 to separate and collect chips. At this time, the liquid jetting means 9 is installed in order to remove the chips adhering to and staying on the slope 11. A member shown as 9e in FIG. 5 is a diffusion plate of the liquid ejection means, and the liquid ejection hole 9
The cleaning liquid ejected from c is reflected and dispersed toward the surface of the slope 11. The structure and the function of the liquid ejecting means are the same as those described in the first embodiment, and thus detailed description thereof will be omitted.

Furthermore, Example 3 which is another embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a sectional view showing a third embodiment of the present invention.

Chip discharging device 30 shown as the third embodiment
Puts the turbid coolant D discharged from a machine tool or the like into a turbid coolant treatment tank 32 having a rotating filtration drum 31 therein. The cloudy coolant is filtered by the filtration filter 31a of the filtration drum 31, and only the coolant C is discharged from the outflow hole 31b provided in the side wall of the filtration drum 31 and collected in the external coolant tank 34 for reuse. On the other hand, the chips k contained in the cloudy coolant D
Are trapped on the surface of the filtration filter 31a of the filtration drum 31 and scooped up. Then, it is swept out by the rotating brush 33 installed so as to come into contact with the upper part of the filtration drum 31, and is discharged to the outside. The arrows shown as R1 and R2 in FIG. 6 indicate the rotation directions of the filtration drum 31 and the rotating brush 33, and SD and SC are the liquid level of the turbid coolant in the turbid coolant treatment tank 32 and the inside of the filtration drum 31, respectively. 3 shows the liquid level of the filtered coolant at. Further, inside the filtration drum 31, the liquid jetting means 3 is provided.
9 is installed, and the fine chips that have entered the inside of the filtration filter 31a and the chips that have been caught on the surface of the filtration filter 31a are removed by ejecting the liquid to prevent clogging of the filtration filter 31a. Since the structure and function of the liquid jetting means 39 are the same as those described in the first embodiment, detailed description thereof will be omitted.

Further, Example 4, which is another embodiment of the present invention, will be described with reference to the drawings. FIG. 7 is a side view showing a fourth embodiment of the present invention.

Chip discharging device 40 shown as the fourth embodiment
Is a cloudy coolant D containing chips from the machine tool M,
It is discharged to the slope 41 having a slope, and the filtration net 42
Collected in. Here, the chips of D in the cloudy coolant are captured, and the coolant after filtration is collected in the coolant tank 44 and reused. Further, a liquid jetting means 49 is installed upstream of the slope 31 to remove the chips adhering to and retained on the slope surface by jetting the liquid. The structure and the function of the liquid ejecting means are the same as those described in the first embodiment, and thus detailed description thereof will be omitted.

In the present invention, the liquid jetting means can be installed to prevent clogging of the drum-shaped filter provided in the cloudy coolant storage tank as in the first and third embodiments, and the second and fourth embodiments. It can also be installed to prevent chips from adhering to the cloudy coolant discharge path as shown in. In addition, in the chip discharging device, it can be applied to any place where the chips are accumulated.

[0029]

As described above, since the present invention has the above-described device configuration, the following effects peculiar to the present invention are exhibited.

First, according to the first aspect of the invention, the liquid ejecting means provided in the chip ejecting device has a structure in which a liquid ejecting hole is provided on the side surface of the liquid ejecting pipe, and moreover, from the liquid ejecting hole. Since it is equipped with a diffuser plate that reflects and disperses the jet flow, the liquid jetting device does not become clogged, and the chip discharging device operates for a long time without requiring special maintenance. can do. Further, it is possible to adjust the reflection / dispersion state of the jet flow simply by changing the arrangement of the diffusion plate, and the chips can be removed efficiently.

According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the purge means is provided at the end of the liquid discharge pipe, the liquid is not ejected from the liquid ejection hole. The liquid is quickly discharged without staying in the liquid discharge pipe, and the occurrence of clogging in the liquid ejection means is further reduced. Further, the maintenance work of the chip discharging device is further reduced.

Furthermore, according to the present invention of claim 3,
In addition to the effects achieved by the invention according to claim 1 or claim 2, the angle and / or the arrangement of the diffusion plate can be changed with respect to the position of the liquid ejection hole and the ejection direction of the liquid from the liquid ejection hole. Since the configuration is adopted, it becomes possible to easily adjust the reflection / dispersion state of the jet flow from the liquid jet hole. Moreover, since it is not necessary to separately provide an adjusting device such as a valve, the number of parts of the chip discharging device can be reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a chip unloading device that is Embodiment 1 of the present invention.

FIG. 2 is an enlarged perspective view and a sectional view of the liquid jetting means of the present invention.

FIG. 3 is a diagram showing an arrangement of a diffusion plate of a liquid ejection unit and a state of ejection flow.

FIG. 4 is a diagram showing a size of a diffusion plate of a liquid ejection unit and a state of an ejection flow.

FIG. 5 is a perspective view of a chip unloading device that is Embodiment 2 of the present invention.

FIG. 6 is a sectional view of a chip unloading device that is Embodiment 3 of the present invention.

FIG. 7 is a side view of a chip carrying-out device according to a fourth embodiment of the present invention.

FIG. 8 is a sectional view of a conventional chip carrying-out device.

FIG. 9 is a perspective view of a conventional liquid ejecting means for a chip discharging device.

[Explanation of symbols]

1, 30, 40 ・ ・ ・ Chip discharge device 2, 32 ... Turbid coolant processing tank 4 ... Hinge belt 4a ・ ・ ・ Upward transport side hinge belt 4b ... Downward return hinge belt 4d ・ ・ ・ Drive sprocket 5 ... Cylindrical member 6 ... Partition board 8, 31 ・ ・ ・ Filter drum 8a, 31a ... Filtration filter 8b, 31b ... Outflow hole 9, 39, 49 ... Liquid ejection means 9a ... Supply pipe 9b ... Liquid discharge pipe 9c ... Liquid ejection hole 9d ... Purge means 9e ... Diffusion plate 10 ... Drain hole 11, 41 ・ ・ ・ Slope 12, 42 ・ ・ ・ Filtration net 33 ・ ・ ・ Rotating brush 34, 44 ・ ・ ・ Coolant tank A: Tail part B: Chip discharge part C ... Coolant D: Cloudy coolant E ・ ・ ・ Clean coolant storage tank F: Chip collection box M: Machine tool S ... Jet flow

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01D 35/02

Claims (3)

[Claims] 1. A chip discharging device for separating and discharging the chips from a cloudy coolant containing the chips discharged from a machine tool, wherein the chip discharging device removes the chips accumulated in the device. And a liquid discharge pipe having one or a plurality of liquid jet holes, and a diffusion plate for reflecting / dispersing the jet flow from the liquid jet holes. A chip carrying-out device having. 2. The liquid ejecting means is provided with the liquid ejecting hole on a side surface of the liquid ejecting pipe, and ejects liquid not ejected from the liquid ejecting hole to an end portion of the liquid ejecting pipe. The swarf carrying-out device according to claim 1, further comprising: 3. The angle and / or the arrangement of the diffusion plate with respect to the position of the liquid ejection hole and the ejection direction of the liquid from the liquid ejection hole can be changed, and the liquid ejection hole can be changed by the change. The chip discharge device according to claim 1 or 2, wherein the reflection / dispersion state of the jet flow from the nozzle is adjustable.