JP4274497B2 - Chip conveying filter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chip conveying type filtration device, which separates the cutting oil before purification into a state containing chips discharged after metal cutting, into chips and cutting oil to remove the chips. The present invention relates to a chip conveying type filtration device used for reusing the purified cutting oil by obtaining the separated cutting oil as the purified cutting oil.
[0002]
[Prior art]
Conventionally, after performing metal cutting or metal grinding with various metal machine tools, the cutting oil before cleaning that contains discharged chips and grinding powder is separated into chips and cutting oil Many filtering devices have been proposed for obtaining cutting oil that can be reused.
Examples thereof are Japanese Laid-Open Patent Publication No. 4-101746, US Pat. No. 5,167,830, Japanese Patent Application No. 5-72729 (Japanese Utility Model Laid-Open No. 7-37309), Japanese Laid-Open Patent Publication No. 7-204427, etc. It is the technique disclosed in the product.
[0003]
Further, the applicant of the present invention is aware of the drawbacks of the prior art, and in recent years as cutting oil that separated chips from so-called turbid coolant discharged in a state of containing curled or dumpling chips from a machining center. In order to take out and reuse the cutting oil, a tank provided with a hinge conveyor to be rotationally driven and a rotation-driven filtration drum provided with a filtration filter having a predetermined mesh according to the filtration accuracy on the outer peripheral surface were arranged. An opening on the side of the filtration drum is used as the filtered and purified cutting oil after removing finer chips on the filtration drum installed in the latter tank. Developed a chip-conveying filter that is configured to take out the purified cutting oil from the outside and applied for a patent. This is disclosed in Japanese Patent Laid-Open No. 9-300171, and this technique is put into practical use.
[0004]
According to the chip conveying type filtration device disclosed in Japanese Patent Application Laid-Open No. 9-300171 developed by the present inventor, a tank provided with a hinge conveyor and a tank provided with a filtration drum are configured separately, and the hinge The cutting oil before purification containing curled or dumpling-shaped chips discharged from metal cutting is put on the hinge conveyor of the tank provided with the conveyor, and the above-mentioned pre-purification is performed by the hinge conveyor. While discharging the chips mixed in the cutting oil, the cutting oil before purification containing fine chips after discharging the chips is passed through the filter filter of the filtration drum to obtain the cutting oil after purification. Is configured to get.
[0005]
However, as described above, the chip conveying type filtration apparatus that implements the invention disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 9-300171 separately comprises a tank provided with a hinge conveyor and a tank provided with a filtration drum. Therefore, there is a problem that the installation cost is more than necessary, and the driving force of the hinge conveyor and the filtration drum is taken in from another device, so that the cost is very high.
[0006]
Therefore, in order to solve the above problem, a chip conveying type filtration device was developed in which a filtration drum was arranged in the rotation trajectory of the hinge conveyor of the tank provided with the hinge conveyor. If the filter is damaged or the filter is periodically replaced, according to the conventional chip conveyance type filtration device, the filtration drum is installed below the hinge conveyor. The top plate or the side plate provided detachably is removed, and the filtration filter replacement work of the filtration drum is performed from above or from the side.
[0007]
However, in recent years, there has been a demand for installing the chip conveying type filtration device under the position where the machine tools are located. Therefore, the installation of the device has become an installation method corresponding to the request. In this case, for exchanging and inspecting the filter of the filter drum, the top plate of the chip conveying type filter device can be removed as described above and the filter filter of the filter drum cannot be inspected and replaced. Therefore, when it is necessary to perform the above work, a chip conveying type filtration device is installed as a system that can be pulled out from below the machine tools, and when the necessity arises, the device is pulled out and the top of the device is removed. It is sufficient to remove the plate, but for this purpose, it is necessary to secure an extra installation area for the replacement work of the filtration filter of the filtration drum of the chip conveying type filtration device, and also to remove various pipes. Therefore, it is practically impossible to adopt the above-described method.
[0008]
[Problems to be solved by the invention]
The chip conveying type filtration device of the present invention has been made in view of the above circumstances, such as a chip conveying unit provided with a hinge conveyor, a filtration drum rotated by receiving a rotational force from the hinge conveyor, and the like. It aims at making it the apparatus of the structure which can perform the inspection and member replacement | exchange work of a chip conveyance type | formula filtration apparatus provided with various members of these easily.
[0009]
Furthermore, the present invention provides an apparatus configured to exhibit a function of improving chip collection efficiency by a hinge conveyor in a chip conveying type filtration apparatus of a configuration type in which a filtration drum is disposed in a rotation trajectory of a hinge conveyor. It is intended to provide.
[0010]
[Means for Solving the Problems]
The chip conveying type filtration device of the present invention removes large and small chips from a cutting oil mixed with large and small chips before filtration (hereinafter referred to as turbid coolant), and further removes small chips from the cutting oil. And a filtered cutting oil storage tank containing the filtration tank.
The filtration tank has an inlet on the upstream ceiling, the bottom side is the conveyor reversing part with the chain wheel on the upstream end, and the lower end part of the filtration drum is between the reversing part and the downstream end. A rising inclined plate with a circular arc recess, which is a place for arranging a slab, is used as a tank with a tip thereof as a chip discharging unit provided with a chain sprocket.
[0011]
In the circular arc recess of the tank, a lower chord of a filtration drum provided with an outlet through which filtered cutting oil flows out is disposed on at least one side plate.
[0012]
The chain sprocket arranged at the reversing part of the tank and the chain sprocket arranged at the chip discharge port have a filter drum with a lower string positioned in a circular arc recess formed on the bottom side of the hinge conveyor. Suspend to rotate through the arc recess.
[0013]
An upstream convection injection pipe is disposed near the reversing portion of the tank, and a downstream convection injection pipe is disposed near the filtration drum on the inclined surface.
[0014]
At least one of the side plates of the tank is provided with an outlet that communicates with an outlet of the filtered cutting oil provided on the side plate of the filtration drum, and a position corresponding to an arrangement position of the filtration drum, and the chips A side plate provided with an open / close door is arranged at a position between the positions corresponding to the arrangement positions of the chain sprockets arranged on the discharge port side to form a filtration tank containing these members.
[0015]
The above-described filtration tank is accommodated in the storage tank in a state in which the filtered cutting oil filtered in the filtration tank flows out from the filtration tank.
[0016]
In short, the present invention has a configuration in which a filtration tank is accommodated in a storage tank.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described below with reference to the drawings.
[0018]
FIG. 1 is a front view showing a configuration of a chip conveying filter device 1 according to an embodiment. 2 is a sectional view taken along line XX in FIG. 1, FIG. 3 is a sectional view taken along line YY in FIG. 1, and FIG. 4 is a sectional view taken along line ZZ in FIG. is there.
[0019]
With reference to FIG.1, 2, and FIG. 3, the whole structure of the chip conveyance type filtration apparatus 1 which concerns on this invention is described. The tank body 2 includes a storage tank (hereinafter referred to as a storage tank) 2b for storing the filtered cutting oil after filtration, and large and small chips from filtered cutting oil before filtration mixed with large and small chips arranged inside thereof. And a processing tank (hereinafter referred to as a filtration tank) 2a that separates fine chips from this, and a storage tank 2b that constitutes the tank body 2 as shown in FIG. In addition to being horizontally installed and fixed on the floor surface, the installation and fixing is performed in a state where a part of the machine tool 100 includes a machining center which is a variety of machining devices and is partially infiltrated. And in the filtration tank 2a arranged inside the storage tank 2b, cutting oil before filtration called turbid coolant containing chips in the shape of curls or dumplings is indicated by a one-dot chain line in the figure. The liquid level is set to be 4 through the charging port 3 with a slight fluctuation. Further, the filtered cutting oil that has been filtered in the filtering tank 2a flows out into the storage tank 2b and is stored in the storage tank 2b, and the cutting oil is reused. Is supplied to the machining apparatus, and a part thereof is supplied to the injection pipe 11 disposed in the filtration drum 10 by a pump.
[0020]
As shown in FIG. 1, the filtration tank 2 a constituting the tank body 2 formed in this manner is provided with chips or chips discharged by operating the machine tool 100 and performing metal cutting on the upstream side. An inlet 3 is provided in the ceiling for introducing turbid coolant containing grinding powder and the like. The upstream end of the bottom side portion is a conveyor reversing portion provided with a chain wheel 15, and the downstream side is a filter drum. An inclined surface portion extending obliquely upward is formed through an arc recess portion in which the lower chord portion is disposed, and a chip discharge port 6 in which a chain sprocket 8 is arranged is formed on the uppermost side of the inclined surface portion. Large and small chips G are dropped into a chip collection box 7 that is appropriately moved below the chip discharge port 6.
[0021]
Further, as shown in the external perspective view of FIG. 6, the hinge conveyor which is the chip conveying means illustrated by the one-dot chain line in FIG. 1 can be bent so that the plurality of hinge members 5 are convex outward. In addition to being connected, standing parts 5 a are formed on both sides of each hinge member 5, and both ends are fixed to a chain 19 that is an endless body. As shown in the figure, the chain 19 of the hinge member 5 connected endlessly in this way is meshed along the chain wheel 15 arranged at the conveyor reversing portion at the upstream end as shown in FIG. By changing the direction, the chain 19 is engaged with the chain sprocket 8 continuously rotated in the direction of the arrow by a motor (not shown) disposed at the discharge port 6 at the downstream end, and guided by the chain guide 22. 1 is configured to continuously operate so as to follow a trajectory as shown in FIG.
[0022]
Further, the hinge conveyor is formed so that the connecting portion of each hinge member 5 protrudes upward as an arcuate surface as shown in the figure, so that the turbid coolant introduced from the inlet 3 is rotated by the rotating hinge conveyor. Cutting oil in the turbid coolant on the hinge member 5 is dropped into the filtration tank. The large and small chips G mixed in the turbid coolant in which the cutting oil has fallen into the filtration tank are placed on the hinge conveyor and conveyed to the downstream side in the direction of the arrow shown in FIG. 1, and the inclined surface of the filtration tank 2a. And is dropped from the chip discharge port 6.
[0023]
Further, in FIG. 6, a flotation member 9 having a width dimension of about 3/1 W with respect to the width dimension W of the hinge member 5 is fixed on the hinge member 5 in a staggered manner as shown in the drawing, thereby In order to prevent the falling of the large and small chips G conveyed toward the chip discharge port 6 at the upper end of the inclined surface 2a from the hinge conveyor that rotates, it is possible to perform normal chip conveyance. good. Further, it is necessary that the hinge member 5 or the lifting member 9 be set to a level 4 or less of the liquid to be filtered before filtration so as not to hinder convection generated in the liquid to be filtered, which will be described later.
[0024]
As described above, the hinge conveyor (chip conveying means) rotates inside the filtration tank 2a shown in FIG. 1 from the conveyor reversing portion at the upstream end toward the chip discharge port 6 at the downstream end. By driving on a turning path that forms a reciprocating path with the side turning as a return path from the chip discharge port 6 at the downstream end toward the conveyor reversing part at the upstream end, A large amount of curled or dumpling-shaped chips G, which are roughly filtered from the joints of the hinge members 5 of the hinge conveyor rotating in the forward path or from the joints, continuously from the inlet 3 toward the chips outlet 6. Transport.
[0025]
The inner side of the hinge conveyor configured as described above is surrounded by the rotation trajectory of the hinge conveyor as shown in FIG. A drum 10 is provided. The filtration drum 10 is finely cut from the liquid to be filtered that has been coarsely filtered by the hinge conveyor as described above and has become a liquid to be filtered containing fine chips and grinding powders that do not contain large and small chips G. A function of filtering the filtered liquid with a filter in order to prevent the above-mentioned fine chips and grinding powder from flowing into the filtered liquid in order to obtain filtered cutting from which the powder and grinding powder are separated. It is a member to fulfill. In other words, the filtration drum functions to cause the above-described liquid to be filtered to flow into the storage tank 2b after being used as filtered cutting oil.
[0026]
For this purpose, a filtration filter 28 is provided on the outer peripheral surface of the filtration drum 10 in a replaceable manner, and an inner race is fixed to the shaft body 12 of the filtration tank 2a, and a pair of left and right bearings 27 are fixed to the filtration drum 10. The filtration drum 10 is pivotally supported by the shaft, and is a kind of lip rubber seal, and has a V-shaped cross section as shown in the figure, so that it slides on the side surface of the chain sprocket 24 at the side portion of the filtration drum 10. Thus, V seals 25 for maintaining the liquid tight state are provided on the left and right sides, respectively, so that the filtration drum 10 is slidably supported in the liquid tight state.
[0027]
Moreover, the purified liquid after filtration (filtered cutting oil) so as to eliminate clogging of the filtration filter between the left and right side plates constituting the filtration drum 10 disposed in the filtration tank 2a constituting the tank body 2 Or the injection tube 11 which injects air from the inside toward a filtration filter vigorously is provided.
[0028]
Furthermore, an opening (outlet) 26 is formed in at least one side plate of the filtration drum 10, and at least one of the side plates provided in the filtration tank 2 a communicating with the opening (outlet) 26. The filtered cutting oil after filtration flows from the filtration tank 2a into the storage tank 2b through the opening 18. Moreover, before making it flow into the storage tank 2b from the filtration tank 2a, as shown in the external perspective view of FIG. 5, the liquid level 4 of the liquid to be filtered is maintained at a liquid level higher than the forward path surface of the chip conveying means. A liquid level adjusting tank 20 is provided as a liquid level maintaining means for this purpose.
[0029]
A liquid level adjusting plate 21 is further fixed to the liquid level adjusting tank 20 by adjusting bolts 23 so as to reach a predetermined level. By maintaining the liquid level 40 after filtration as shown in FIG. 2 by the liquid level adjustment tank 20 and the liquid level adjustment plate 21, the liquid level of the liquid to be filtered around the filtration drum 10 before filtration. 4 can be maintained at a high position, and the liquid level 4 can be maintained above the upper surface of the forward hinge member 5 as shown in FIG.
[0030]
Further, as shown in FIG. 2, the chain 19 to which the hinge member 5 of the hinge conveyor is fixed is guided by the chain guide 22, and meshes with the lower side of the chain sprocket 24 of the filtration drum 10. In this manner, the rotation of the filtration drum 10 is firmly received by the power transmission from the rotating hinge conveyor. In this configuration, the drive motor dedicated to the filtration drum 10 is omitted, and the cost of the apparatus is reduced.
As shown in FIG. 1, the portion where the chain 19 of the hinge conveyor and the chain sprocket of the filtration drum 10 are meshed with each other is shown in FIG. This is the place where it was placed. Engagement of the chain 19 of the hinge conveyor at this point with the chain sprocket of the filtration drum 10 is ensured. As a result, power transmission from the hinge conveyor to the filtration drum is transmitted as strong power. At the same time, the scraping function of the chips that have been collected at the location can be effectively exhibited.
[0031]
Again, the liquid to be filtered, which is put into the filtration tank 2a in FIG. 1 and stays in the part sandwiched between the right side portion of the filtration drum 10 and the inclined surface, needs to generate convection. Similarly, it is necessary to positively generate convection in the lower part of the inlet 3.
[0032]
The reason is that fine chips adhering to the filtration filter 28 of the filtration drum 10 are concentrated at the portion sandwiched between the right side portion of the filtration drum 10 and the inclined surface. This is because the filtration performance is impaired by adhering to the filtration filter 28 again. Similarly, the fine chips after being roughly filtered as described above are concentrated in the lower part of the inlet 3 as well, so that they gradually accumulate and become a chain drive brake.
[0033]
Therefore, the liquid level adjustment tank 20 and the adjustment plate 21 maintain the liquid level 4 before filtration as shown in FIG. 2, and the convection injection pipes 13 and 14 are respectively positioned at the positions shown in the figure. Then, the purified liquid after filtration is ejected from the pump by the pump, so that the chips move toward the lower side of the hinge member 5 as shown in FIG. 4 which is a sectional view taken along the line ZZ in FIG. Like that.
[0034]
Moreover, since the rotation track of the hinge conveyor to which the hinge member 5 is fixed meshes with the chain sprocket of the filtration drum as described above, a track that substantially matches the circular arc recess below the filtration tank 2a is partially formed. As a result, the chips of the filter drum 10 can be effectively discharged on the return path of the hinge conveyor. Further, the side of the filtration tank 2a is provided with a door for the opening 17 for exchanging and inspecting the filtration filter 28 by making the filtration drum 10 accessible. This door is opened without removing the conveyor, and the operation is performed through the opening 17.
[0035]
Further, a brush 16 for removing chips adhering to the hinge member 5 is fixed below the chain sprocket 8 arranged on the chip discharge port 6 side, so that the adhering chips are positively removed. It will be possible.
[0036]
In the apparatus described above, with reference to FIG. 1, after being used in the machining apparatus 100 including the machining center, the to-be-filtered cutting oil in a state of containing curled or dumpling-shaped chips is supplied from the inlet 3. When thrown in, the hinge member 5 constituting the hinge conveyor is subjected to rough filtration of a relatively large chip G in a curled or dumpling shape, and is conveyed downstream and collected from the discharge port 6. Although it will fall in the box 7, the cutting oil contained in the chip falls in the middle of conveyance of an inclined surface, and falls as a dry chip.
[0037]
Further, after coarse filtration of large and small chips G, the liquid to be filtered in which fine chips are mixed is filtered by a filter 28 provided on the outer peripheral surface of the rotationally driven filtration drum 10 and filtered. The inside of the drum is introduced as filtered cutting oil, and this is taken out from the opening (outlet) 26 on the side of the filtration drum and the opening (outlet) 18 of the filtration tank 2a to the storage tank 2b as filtered cutting oil. . At this time, the liquid level 40 of the filtered cutting oil is maintained at a predetermined level by the liquid level adjusting plate 21 so that the liquid level 4 of the liquid to be filtered before filtration is above the forward path of the hinge conveyor. To do. On the other hand, convection is generated in the liquid to be filtered by the cleaning liquid injected from the injection pipes 13 and 14 so that the chips move as described above to prevent reattachment to the filtration filter, Prevents precipitation in the filtration tank.
[0038]
According to the chip conveying type filtration device according to the present invention configured as described above, the portion provided with the hinge conveyor and the portion provided with the filtration drum can be integrally configured, so that the cutting device is cut as compared with the conventional purification device. Powder recovery efficiency is good and cost reduction can be realized.
[0039]
In addition, it cannot be overemphasized that this invention is not limited to the structure of the said description, Moreover, although the case where cutting oil was used as the filtration object liquid before filtration was described, it is not limited to this, The solid which should be conveyed by a hinge conveyor in liquid All of them can be applied to a chip conveying type filtration device for a liquid in which objects are mixed.
[0040]
【The invention's effect】
As described above, according to the present invention, it is possible to configure a chip conveying type filtration device provided with a chip conveying means including a hinge conveyor and a rotationally driven filtration drum at low cost.
[0041]
In addition to the above effects, it is possible to provide a chip conveying type filtration device that can easily perform exchange and inspection work of the filtration filter of the filtration drum at the installation site installed in a limited installation area. .
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a front view in which a main part of a chip conveying filter device according to an embodiment is cut away.
2 is a cross-sectional view taken along line X-X in FIG. 1;
3 is a cross-sectional view taken along line YY in FIG.
4 is a cross-sectional view taken along the line ZZ in FIG. 1;
FIG. 5 is an external perspective view of the liquid level adjustment labor 20 of the filtration drum.
FIG. 6 is an external perspective view of a hinge conveyor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Chip conveyance type filtration apparatus 2 Tank main body 2a Filtrate storage tank 2b before filtration Filtrate storage tank 3 Filtration liquid storage tank 3 Input port 4 Liquid surface 5 Hinge member 6 Outlet 7 Chip collection box 8 Chain sprocket 9 Lifting member 10 Filtration Drum 11 Cleaning injection pipe 12 Rotating shaft 13 Downstream convection injection pipe 14 Upstream convection injection pipe 15 Chain wheel 16 Brush 17 Opening 18 Opening 19 Chain 20 Liquid level adjusting tank 21 Liquid level adjusting plate 22 Chain Guide 23 Adjustment bolt 24 Chain sprocket 25 V seal 26 Opening 27 Bearing 28 Filtration filter 40 Liquid level G after filtration Chip

Claims (1)

A filtration tank that removes small and large chips from the cutting oil mixed with large and small chips before filtration, and further removes small chips from the cutting oil, and a filtered cutting oil storage tank containing the filtration tank. And
The filtration tank has an inlet on the upstream ceiling, the bottom side is the conveyor reversing part with the chain wheel on the upstream end, and the lower end part of the filtration drum is between the reversing part and the downstream end. With a rising slope plate interposing a circular arc recess that is a place to place, the tip of the tank as a chip discharge part arranged with a chain sprocket,
In the circular arc recess of the tank, the lower chord of the filtration drum provided with an outlet for flowing the filtered cutting oil out on at least one side plate is positioned and arranged,
The chain sprocket arranged at the reversing part of the tank and the chain sprocket arranged at the chip discharge port have a filter drum with a lower string positioned in a circular arc recess formed on the bottom side of the hinge conveyor. Suspend to rotate through the arc recess,
An upstream convection injection pipe is disposed on the reversing portion side of the tank, and a downstream convection injection pipe is disposed near the filtration drum on the inclined surface.
At least one of the side plates of the tank is provided with an outlet that communicates with an outlet of the filtered cutting oil provided on the side plate of the filtration drum, and a position corresponding to an arrangement position of the filtration drum, and the chips While arranging a side plate provided with an open / close door at a position located between positions corresponding to the arrangement position of the chain sprocket arranged on the discharge port side, a filtration tank containing these members is provided,
In the storage tank, the above-mentioned filter tank is accommodated in a state in which the filtered cutting oil filtered in the filter tank flows out from the filter tank.

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