KR101920167B1 - Auxiliary tank for working fluid circulator of electric discharge machine - Google Patents

Abstract

An auxiliary tank of the present invention is configured to receive and filter waste water from a first reservoir and supply the waste water to a second reservoir such that the waste water can be used by an electric discharge machine, thereby supplying sufficient amounts of filtered water and stably carrying out an electrical discharge process. In particular, the auxiliary tank includes a cleaning line to supply the waste water stored in the first reservoir to a third pump, and one end of the cleaning line is immersed into the first reservoir, and is freely moved to supply the waste water. Even though the first reservoir is not cleaned separately, the first reservoir can be quickly and easily cleaned by the cleaning line, without stopping the electrical discharge machine. Also, since the present invention includes the pump for supplying the waste water which is a pump of an open impeller type, it is possible to minimize alien substances contained in the waste water from adhering to the impeller or being jammed in the impeller, thereby easily maintaining the machine.

Description

TECHNICAL FIELD [0001] The present invention relates to an auxiliary tank for an operating fluid circulator of an electric discharge machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary tank for an operating fluid circulating device of an electric discharge machine, and more particularly, to an auxiliary tank for an operating fluid circulator of an electric discharge machine, Therefore, it is possible to extend the filter life by reducing the filtration amount of the filter attached to the working fluid circulating device. Moreover, by adding a cleaning line, one end of the cleaning line can be moved or moved freely in the water tank storing the wastewater The suction force for sucking the wastewater sucks the foreign matter in the water tank, thereby improving the cleaning efficiency.

Discharge machining refers to a machining method that utilizes the physical, mechanical, and electrical actions that occur when a discharge occurs between two electrodes. Such an electrical discharge machining apparatus mainly includes a super-drilling electric discharge machine for machining grooves or holes in an object to be machined, a wire electric discharge machining machine for drilling through holes in a workpiece to form a desired shape by inserting wires into the holes, And a tap discharging machine for discharging. Particularly, in order to effectively remove heat and chips generated by electric discharge machining when drilling a hole or a groove in an object to be processed, a cooling device such as the following Patent Document 1 is used.

(Patent Document 1) Korean Patent No. 1075503

A first object of the present invention is to provide a cooling device for a super-drill electric discharge machine, and more particularly to a cooling device for a super-drill electric discharge machine, . A second object of the present invention is to make it possible to facilitate the maintenance of the cooling device such as the replenishing of the cooling water or the removal of the foreign matter to be filtered by allowing the cooling device (cooling water tank) to be easily taken out from the main body in a sliding manner. In order to achieve this object, a cooling device for a super-drill electric discharge machine collects cooling water supplied to an electrode wire of a super drill and cooling water supplied for cooling an object to be processed into a cooling water tank, Wherein the cooling device including the cooling water tank is installed in the main body of the super drill electric discharge machine so as to be able to be taken out of the main body of the super drill electric discharge machine.

On the other hand, such a working fluid is used for cooling and chip removal, and then a working fluid circulating device 100 is used in which the working fluid once used is filtered and circulated again as shown in FIG. The circulation apparatus 100 includes a first water tank 110 for storing wastewater used in an electric discharge machine, and a second water tank 120 for storing filtered water filtered through the wastewater. Particularly, the first and second water tanks 110 and 120 are separated from each other by the separating plate 111 so that the first water tank 110 floods when the filtered water reaches the second water tank 120. When the limit switch 121 is installed in the second water tank 120 and the water level of the second water tank 120 is too low, it functions as a safety device to prevent the filtered water from being supplied to the electric discharge machining apparatus.

1, the circulation apparatus 100 is provided with a first pump 130 for feeding the wastewater stored in the first water tank 110. The outlet of the first pump 130 is provided with a The first filter 150 is connected. The first filter 150 filters waste water filtered by the first pump 130 and stores the filtered water in the second water tank 120.

The circulation apparatus 100 is equipped with a second pump 140 for supplying filtered water stored in the second water tank 120 to the electric discharge machining apparatus M as shown in FIG. The filtered water supplied to the second pump 140 is used as working fluid in an electric discharge machine, and then returned to the first water tank 110 as waste water.

Such a circulation device has the following problems.

(1) The filter capacity determines the filtration quantity, and it is not possible to secure enough filtered water as a filter used in the field of the electric discharge machine at present. This is because there is a possibility that the filtered water is insufficient in the middle of the discharge machining when it is filtered by the filter while being discharged by the electric discharge machine.

(2) As described above, when the amount of filtered water is insufficient during the discharge machining, heat and chips generated in the discharge machining apparatus can not be removed cleanly, and in particular, the discharge machining can not be performed due to insufficient filtered water used as the working fluid. Occasionally.

(3) Forced termination of such an electric discharge machining apparatus not only imposes an excessive external force on the electric discharge machining apparatus but also lowers the working efficiency of the electric discharge machining apparatus and deteriorates the quality of the electric discharge machining.

(4) On the other hand, the filter is somewhat clogged so that it can not be filtered due to the lowering of the filtration capacity. In the conventional circulating apparatus, it is impossible to filter a sufficient amount of wastewater required by the discharge processing machine. Therefore, if the filter is blocked by about 40 to 50%, it should be replaced.

(5) This not only makes it impossible to discharge-process the electric discharge machine during the exchange of the filter, but also requires a correspondingly higher maintenance cost due to the replacement of the filter.

(6) Since the wastewater is stored in the first tank and the wastewater is supplied to the filter by the first pump, foreign matter or sludge easily attaches to the inner wall of the first tank as the wastewater is stored in the first tank. Therefore, it is troublesome to clean the inside of the water tank frequently.

Korean Patent No. 1075503 (Registered on October 14, 2011)

The present invention takes this point into consideration, and it is possible to provide a sufficient amount of filtered water because it is constituted to be supplied to the second water tank after being supplied with a part of the wastewater in the first water tank, And to provide an auxiliary tank for a working fluid circulating device of an electric discharge machine.

Particularly, the present invention constitutes a cleaning line for supplying wastewater contained in the first tank to the third pump, and one end of the cleaning line is immersed in the first tank and the end of the cleaning line can be moved to supply wastewater Another object of the present invention is to provide an auxiliary tank for a working fluid circulating device of an electric discharge machine which can clean the water tank easily and quickly through a cleaning line without cleaning the first water tank separately and without stopping the electric discharge machine.

In addition, since the pump for supplying wastewater is an open impeller pump, it is possible to easily maintain the impurities in the wastewater by preventing the impurities from being caught or adhered to the impeller. There is another purpose in providing an auxiliary tank.

In order to achieve the above object, an auxiliary tank for an operating fluid circulating apparatus of an electric discharge machine according to the present invention includes a first water tank 110 for storing wastewater used in an electric discharge machine M, A second pump 140 for feeding the filtered water of the second water tank 120 to the electric discharge machining apparatus M, a second pump 140 for supplying the filtered water to the second water tank 120, And at least two first filters (150) connected to the outlet side of the first pump (130) to filter the wastewater and store the wastewater in the second water tank (120) In the auxiliary tank, a frame (200); A third pump 210 mounted on the frame 200; A supply line 220 for supplying wastewater from the first water tank 110 to the third pump 210; At least two second filters (230) connected to an outlet side of the third pump (210) to filter wastewater; And an auxiliary line 240 for supplying the filtered water filtered by the second filter 230 to the second water tank 120. [

In particular, the first and third pumps 130 and 210 are each a pump equipped with an open impeller.

The first filter 150 and the second filter 230 are the same kind of filters of the same capacity.

The auxiliary line 240 may be formed in a manner such that it can naturally fall under the second filter 230 so that the filtered water collected below the second filter 230 can be supplied to the auxiliary line 240, (241).

Finally, the supply line 220 is inserted into the first water tank 110 and the waste water is supplied to the third pump 210 while moving in the first water tank 110 to clean the inside of the first water tank 110 And the cleaning line 300 is further provided.

The auxiliary tank for the working fluid circulating device of the electric discharge machining apparatus according to the present invention has the following effects.

(1) Since the wastewater is filtered through the auxiliary tank and supplied to the second water tank, the working fluid required by the discharge machining apparatus can be sufficiently supplied.

(2) Since the filtered water used as the working fluid is insufficient, the discharge machining apparatus can perform the discharge machining without stopping during the discharge machining, thereby improving the working efficiency while improving the machining quality.

(3) In particular, since the filtered water is sufficiently supplied through the auxiliary tank, it can be used until the degree of clogging of the filter mounted on the fluid circulating apparatus becomes 90% or more. Thus, the lifetime of the filter can be increased to increase the replacement cycle and reduce the maintenance cost.

(4) Since the open impeller type pump is used for supplying the wastewater, the foreign matter contained in the wastewater can be prevented from being trapped, thereby preventing the pump from stopping and increasing the period for cleaning the pump.

(5) Since the end of the cleaning line is configured to be able to supply the wastewater to the third pump while moving in the first water tank storing the wastewater, foreign matter, sludge, etc., together with the wastewater to be sent to the third pump, Filtering can be performed, which not only eliminates the need to clean the water tank separately, but also can reduce cleaning costs.

(6) The filtered water filtered through the third filter is configured to be able to be supplied to the second water tank while falling naturally through the elbow attached to the lower portion of the third filter, so that the filtered water is naturally supplied to the second water tank.

1 is a schematic view showing an example of a working fluid circulating apparatus for a conventional electric discharge machine.
[Fig. 2] is a schematic view showing a configuration of an auxiliary device mounted on a working fluid circulating device for an electric discharge machine according to [Embodiment 1] of the present invention. [Fig.
[Fig. 3] is a cross-sectional view showing a state in which an elbow is attached to a second filter according to [Embodiment 1] of the present invention.
4 is a schematic view showing a configuration of an auxiliary device mounted on a working fluid circulating device for an electric discharge machine according to [Embodiment 2] of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

The auxiliary tank for the working fluid circulating device of the discharge machining apparatus according to [Embodiment 1] of the present invention includes a frame 200, a third pump 210, a supply line 220, a second filter 230, (240).

Particularly, the auxiliary line 240 is configured so that the filtered water obtained by filtering the wastewater supplied through the third pump 210 through the second filter 230 can be used in the discharge machining apparatus M, So that sufficient filtering water can be supplied through the working fluid circulating device 100 for supplying the working fluid to the working fluid circulating device 100.

Since the third pump 210 uses an open impeller, since the impeller having no side plate is used, foreign matter is not stuck on the side plate, so that the third pump 210 can be used for a long time and can be easily and conveniently maintained .

In addition, since the elbow 241 is attached to the lower part of the auxiliary line 240 for storing the filtered water by the second filter 230, the filtered water can flow naturally, so that it can be easily and naturally 2 can be transported to the water tank 120. Fig.

Hereinafter, this configuration will be described in more detail. In the drawing, "100" represents a working fluid circulating device which supplies filtration water to an electric discharge machine M for electric discharge processing, and after the electric discharge machining, the waste water is received and filtered again. 2, the working fluid circulating apparatus 100 includes a first water tank 110 for storing wastewater used in the electric discharge machine M, a second water tank 120 for storing filtered water filtered through the wastewater, A first pump 130 for feeding the wastewater of the first water tank 110 to pressurize the wastewater, and a second water tank 130 connected to the outlet of the first pump 130 for filtering wastewater, And a second pump 140 for feeding the filtered water of the second water tank 120 to the electric discharge machine M. [ And reference numeral 121 denotes a limit switch. The construction of the working fluid circulating apparatus 100 is the same as that of the conventional art, and a detailed description thereof will be omitted.

The frame 200 provides a space for mounting a third pump 210, a second filter 230 and the like, which will be described later, as shown in Figs. 2 and 3. The frame 200 is manufactured to have a size capable of sufficiently storing the amount of filtration that can be filtered by the second filter 230.

The third pump 210 is mounted on the above-described frame 200 as shown in Fig. The third pump 210 is connected to the first water tank 110 constituting the working fluid circulating apparatus 100 to supply a part of the wastewater to the second filter 230 do.

In a preferred embodiment of the present invention, the third pump 210 preferably uses an open impeller type pump. Here, the open impeller is an impeller (wing car) manufactured by a conventional technique without a side plate, so that it can be used for a long time because it is less clogged by foreign matter or the like, and is continuously operated during discharge processing to obtain sufficient filtered water . In addition, it is preferable that the second pump 130, which pumps the wastewater in addition to the third pump 210, also minimizes clogging by using an open impeller.

In a preferred embodiment of the present invention, the third pump 210 may be configured to operate in conjunction with another pump, or may be configured to independently control a switch to operate only when necessary.

The supply line 220 connects the first tank 110 and the third pump 210 and connects the third pump 210 to the waste water stored in the first tank 110 as shown in FIG. And the like.

In particular, the supply line 220 includes at least one valve 221 as shown in FIG. 2, so that when the auxiliary tank according to the present invention is not used, the wastewater flows to the third pump 210 It is desirable to arrange such that the flow of the wastewater can be blocked.

The second filter 230 is mounted on the outlet side of the third pump 210 as shown in Figs. 2 and 3. At this time, the second filter 230 is configured to be able to filter and receive the wastewater in a linear form with the third pump 210, thereby preventing the foreign matter or the like contained in the wastewater from sticking to or blocking the pressure- It is preferable to configure it so as to increase the height

It is preferable that the second filter 230 is installed in the same number of filters as the first filter 150, as shown in FIG. This is because it is possible to obtain a sufficient amount of filtered water required in the electric discharge machine (M) by making it possible to filter by a flow amount equal to the filtering amount to be filtered through the first filter (150).

The auxiliary line 240 is a line for supplying the filtered water filtered by the second filter 230 to the second water tank 120 to be used in the electric discharge machine M as shown in FIG. .

Particularly, the auxiliary line 240 is configured such that, as shown in FIGS. 2 and 3, the filtered water is naturally lowered through the lower part of the water collection tube 242 for collecting the filtered water filtered in the second filter 230 described above And is directed to the second water tank 120. [0064] At this time, the elbow 241 is attached to the connection part between the collection receptacle 242 and the auxiliary line 240 so that the filtered water can be discharged to the side while flowing downward. Thus, the filtered water can be discharged more naturally .

2, the part of the wastewater is fed in the first tank 110 as the third pump 210 is driven, and the wastewater fed by the pressure is fed through the second filter 230 Filtration is carried out. The filtered water is stored in the second water tank 120 through the auxiliary line 240 and is supplied to the electric discharge machine M as the second pump 140 is driven.

On the other hand, the filtered water supplied to the electric discharge machine M is stored in the second water tank 120. The filtered water passes through the filtered water supplied through the auxiliary line 240 and the water Which is filtered through the first filter 150.

The filtered water supplied to the electric discharge machine M is collected in the first water tank 110 through the electric discharge machine M and is collected by the first and third pumps 130 and 210, 1 and the second filters 150 and 230, and then returned to the second water tank 120 to repeat the circulation.

As shown in Fig. 4, the auxiliary tank for the working fluid circulating apparatus of the electric discharge machining apparatus according to the second embodiment of the present invention has the same structure as that of the first embodiment described above, The cleaning line 300 may be additionally provided. Here, the same components as those of the first embodiment are not described in detail, and only the additional configuration will be described.

[Embodiment 2] adds a cleaning line 300 as shown in Fig. At this time, the cleaning line 300 is configured to connect one end to the third pump 210 and the other end to be inserted into the first water tank 110. Particularly, the other part of the cleaning line 300 inserted into the first water tank 110 is used as oil connection or the like so that the water can be easily moved, thereby moving the water in the first water tank 110, The sludge and foreign substances in the first water tank 110 may be sent together with the wastewater to increase the cleaning effect.

3, the cleaning line 300 may be branched from the supply line 220. However, the cleaning line 300 is not limited to this configuration and may be configured such that the third pump 210 can pump the wastewater It will be readily apparent to those skilled in the art to which the present invention pertains.

In addition, the cleaning line 300 may be configured to be coupled and separated using a coupling or a one-touch lever so that the cleaning line 300 can be easily separated from or connected to the supply line 200. Particularly, It is preferable to provide a valve so as not to be discharged to the outside.

100: working fluid circulator
110: First tank
120: Second tank
130: first pump
140: Second pump
150: first filter
200: frame
210: Third pump
220: Supply line
230: second filter
240: auxiliary line

Claims (5)

A first water tank 110 for storing wastewater used in the electric discharge machine M, a second water tank 120 for storing filtered water filtered through the wastewater, a first pump for feeding the waste water of the first water tank 110 A second pump 140 for feeding the filtered water from the second water tank 120 to the discharge machine M and a second pump 140 connected to the outlet side of the first pump 130 for filtering wastewater, In an auxiliary tank connected to a working fluid circulating device for an electric discharge machine including at least two first filters (150)
A frame 200; A third pump 210 mounted on the frame 200; A supply line 220 for supplying wastewater from the first water tank 110 to the third pump 210; At least two second filters (230) connected to an outlet side of the third pump (210) to filter wastewater; And an auxiliary line (240) for supplying the filtered water filtered by the second filter (230) to the second water tank (120)
The first filter (150) and the second filter (230)
An auxiliary tank for the working fluid circulating device of the electric discharge machine.
The method of claim 1,
The first and third pumps (130, 210)
Wherein the pump is a pump equipped with an open impeller, and the auxiliary tank is an auxiliary impeller for an operating fluid circulating device of an electric discharge machine.
delete The method of claim 1,
The auxiliary line (240)
And an elbow 241 for allowing filtration water to flow sideways and flow naturally under the second filter 230 so as to supply filtered water collected below the second filter 230 to the auxiliary line 240. [ Auxiliary tank for working fluid circulation device of discharge machine.
The method according to any one of claims 1, 2, and 4,
In the supply line 220,
A cleaning line 300 is further provided so as to clean the inside of the first water tank 110 by inserting the water into the first water tank 110 and moving the water in the first water tank 110 to supply the waste water to the third pump 210 An auxiliary tank for working fluid circulation device of an electric discharge machine.

Images