KR200256623Y1 - Jet-water course collector of wire discharger - Google Patents

Abstract

The present invention relates to a jet flow recovery machine of a wire discharge processor, one side cover formed with a connection hole at the top to connect the wire electrode and the guide tube for guiding the jet flow together, and the outlet for transferring only the wire electrode is attached to the top The other side cover, the recovery body main body of which both side covers are screw-assembled on both sides, the primary and secondary discharge passages formed in an isolated state inside the recovery body, respectively, and each of the primary and secondary discharge passages A connecting passage connecting the upper portion, a plurality of pressure reducing rings which allow the transfer of the wire electrode while being inserted into the connecting passage while the jet flow is discharged into the primary and secondary discharge passages, and the primary and secondary discharge passages. The primary and secondary recovery pipes are connected to two connectors formed at both ends of the lower side of the one side cover to communicate with each lower part to recover the jet flow. In the connected jet flow recovery device, a vortex absorption that extends to the rear side at a lower portion of the primary discharge passage of the collector main body is spaced apart from the secondary discharge passage to attenuate the vortex action of the jet stream in the primary discharge passage. The invention is characterized by the formation of a passage.

Description

Jet-water collector of wire discharge machine {Jet-water course collector of wire discharger}

The present invention relates to a jet flow recovery machine of a wire discharge processing machine for recovering the jet stream supplied to assist the transfer with the action of cooling the wire electrode subjected to the discharge processing of the workpiece in the wire discharge processing device.

In general, a wire discharge processing machine continuously supplies (+) (-) electrodes to a workpiece and a wire electrode in a state in which the wire electrodes are spaced apart at minute intervals from the workpiece, thereby pulsed discharge between the workpiece and the wire electrode. This is a device that repeatedly generates and cuts the work as a discharge energy or drills holes of various shapes in the work, and the wire electrode used for electric discharge machining usually has a very thin diameter of about 0.02 to 02 mm. As metal wires, copper wires are used in particular.

In addition, the wire discharge processing machine is to process the workpiece by generating a discharge between the metal wire and the workpiece, wherein the metal wire causing the discharge is subjected to the high heat discharge heat generated during the discharge as described above. Therefore, since the metal wire may be easily cut by high heat, it is a means of recovering the high-temperature metal wire leaving the workpiece with cooling water after discharge processing, so that the metal wire can be recovered without disconnection. In order to cool the metal wires, the supplied cooling water and the recovered metal wires are separated and recovered, and the cooling water is reused, and the metal wires are disposed of.

As a representative technique of the method of cooling the metal wire in the wire discharge processing machine as described above, the invention of International Publication No. WO 90/12672 may be mentioned. This invention cools the wire electrode by means of cooling the wire electrode by jet flow, thereby disconnecting the disconnection. While providing an effective advantage in preventing, the jet current is directly in contact with a pair of towing rollers for transporting wire electrodes and a complex drive mechanism for driving them, which has a devastating effect on electrical supply systems such as short circuits. The problem that the failure is caused, and the durability of the components of the drive device is shortened due to the inconvenience that often replace the parts, the problem caused by this applicant by the present applicant for the purpose of solving this problem -0028851 has been invented.

The invention described above relates to a recoverer for recovering jet streams supplied to cool the wire electrodes in the wire discharge processor. According to the invention, the wire electrodes subjected to the discharge processing of the workpiece are cooled with jet streams to the wire electrodes. The jet flow recovery unit is installed between the jet flow unit and the towing roller to impart a transfer force, and the jet flow recovery unit is formed by isolating the primary discharge passage and the secondary discharge passage in the main body and then Install a plurality of pressure reducing rings each having a discharge hole allowing the upper part of each of the primary and secondary discharge passages to penetrate each other and allowing the transfer of wire electrodes and the simultaneous discharge of jet streams. Doing.

However, in the above invention, the flow rate of the jet stream discharged through the primary discharge passage of the recoverer body is high, whereas the primary discharge passage is bent in a 'b' shape, so the vortex phenomenon appears at the portion where the direction of the flow velocity is changed. In addition, this vortex phenomenon delays the discharge of jet stream and adversely affects the discharging action of the wire electrode passing through the decompression ring, which may cause disconnection of the wire electrode. Increasing the fluid resistance of the jet stream to recover the jet stream to the primary and secondary discharge passages, and the entire pressure reducing ring for discharging the wire electrode at the same time is made of expensive ceramics made of non-conductive and wear-resistant materials. The cost becomes expensive.

The present invention has been devised in view of the above, and especially occurs when the jet stream is discharged to the primary discharge passage of the main body of the collector by improving the present invention. In order to attenuate the vortex phenomenon, the object is to prevent the wire electrode being transported from being affected by the jet flow which is discharged, and a ring body having a cylindrical passage formed around the plurality of pressure reducing rings in the main body of the recovering body. The ring body is made of relatively inexpensive material such as synthetic resin, which is a non-conductive material, while the electrode body is made of ceramic, cemented carbide or diamond. As a means of manufacturing, it is possible to reduce the production cost and It's designed for different purposes.

Means of the present invention for this purpose,

One side cover formed with a connection hole at the top to connect the wire electrode and the guide tube for guiding the jet flow together, the other side cover is attached to the top of the outlet port for transferring only the wire electrode, and the two side cover screw assembly on each side A recovery main body, a primary and secondary discharge passages formed in an isolated state in the recovery main body, respectively, connecting passages connecting upper portions of the primary and secondary discharge passages, and inserted into the connection passages. A plurality of decompression rings for discharging the wire electrodes while allowing jet flow to be discharged to the primary and secondary discharge passages, and formed on both sides of the lower ends of the one side cover to communicate with the lower portions of the primary and secondary discharge passages. In the jet flow recovery device is connected to the primary side and the secondary side recovery pipe connected to the two connecting ports for recovering the jet flow,

It is characterized in that the lower portion of the primary discharge passage of the recovering body is formed to form a vortex absorbing passage that is extended to the rear side while being spaced apart from the secondary discharge passage to attenuate the vortex action of the jet stream in the primary discharge passage. ,

In addition, each of the plurality of pressure-reduction ring is inserted into the connecting passage formed in the upper portion of the primary and secondary discharge passage of the recovery body is divided into a ring body and an electrode discharge guide that is inserted into the cylindrical passage formed in the center of the ring body It is characterized in that the fabricated and assembled.

1 is a cross-sectional view of the assembled state of the present invention.

2 is a cross-sectional view taken along the line A-A of FIG.

3 is a cross-sectional view taken along the line B-B in FIG.

4 is a cross-sectional view taken along the line C-C of FIG.

5 is a cross-sectional view taken along the line D-D of FIG.

Figure 6 is an exploded perspective view of a partial cross-sectional view of the pressure reducing ring which is the main part of the present invention.

※ Explanation of code for main part of drawing

1: Jet Water Collector 2: Collector Main Body

2a, 2b: Both side cover 3a, 3b: Primary and secondary discharge passage

4 wire electrode 5 pressure reducing ring

6: upper connector 7: connector

8a, 8b: Primary and secondary lower connection ports

9: outlet 21: base member

31a, 31b: Upper connecting passage 32a, 32b: Middle part

33a, 33b: Lower 34: Extension passage

35: vortex absorption passage 51: ring body

52: electrode discharge guide 521: discharge hole

522,523,63: tapered side 53,62: leg

54: space 61: screw part

64: transfer hole 71: guide tube

72, 82a, 82b: One-touch connection ports 81a, 81b: Primary and secondary recovery pipes

91: air ball

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view of the assembled state of the present invention, Figure 2 is a cross-sectional view taken along the line AA of Figure 1, Figure 3 is a cross-sectional view taken along the line BB of Figure 1, Figure 4 is a cross-sectional view taken along the line CC of Figure 1, Figure 5 6 is a cross-sectional view of the DD line, and FIG. 6 is an exploded perspective view showing a partial cross section of a pressure reducing ring which is an essential part of the present invention.

Reference numeral 1 denotes a jet flow recoverer, which has a structure in which both side covers 2a and 2b are screw-assembled as bolts on both sides of the recoverer main body 2, and the recoverer main body ( Inside 1), primary and secondary discharge passages 3a and 3b are formed at both left and right sides of the drawing, and the primary and secondary discharge passages are shown in the example of FIG. While each upper part is formed on both left and right sides of (2), the center thereof is located on the same horizontal line at the center of the upper end of the main body of the recovery machine 2 so that the centers coincide with each other while Afterwards, the first and second discharge passages 3a and 3b are symmetrically staggered with each other toward both sides, so that the first and second discharge passages 3a and 3b are formed in an eight-shaped '八' shape, as viewed from either the side cover 2a or the other side cover 2b. Have

When explaining the structure of each of the primary and secondary discharge passage (3a) (3b) formed in the '8' shape as described above in more detail, the upper portion is inserted a plurality of pressure reducing ring (4) having a circular cross section While being connected to each other by the upper connection passages 31a and 31b formed to be installed, the middle portions 32a and 32b and the lower portions 33a and 33b that are out of the upper connection passage are insulated from each other. Are formed in a symmetrical structure extending downward in the opposite direction to each other.

One of the features of the present invention is that the vortex absorption passage 35 is formed in the lower portion 33a of the primary discharge passage 3a, and the vortex absorption passage 35 is the lower portion 33a of the primary discharge passage. The primary discharge passage 3a is formed to extend in the rearward direction to absorb and attenuate the vortex action generated when the jet stream flowing into the primary discharge passage 3a strikes the lower portion 33a. Vortex phenomena generated in the inside does not affect the transfer operation of the wire electrode 4 and serves to promote the discharge of the jet water at the same time.

In addition, another feature of the present invention, a plurality of pressure-reduction ring is inserted into each of the upper connecting passage (31a) (31b) formed to communicate with each other on the upper portion of the primary and secondary discharge passage (3a) (3b) ( 5) is produced by assembling the ring body 51 and the electrode delivery guide 52 inserted into the center of the ring body divided into pieces. That is, the ring body 51 is made of a non-conductive, heat-resistant synthetic resin material, and the electrode delivery guide 52 is selected from among those made of ceramic, cemented carbide or diamond as a wear-resistant material.

The electrode discharging guide 52 is formed with the tapered surfaces 522 and 523 of the fallopian tube which are extended to both left and right sides based on the dispensing hole 521 having a very small diameter formed at the center of the inner side. The tapered surface 522 acts to rapidly reduce the flow rate of the jet stream conveyed together with the wire electrode 4 to reduce the amount of jet flow out of the discharge hole 521, while the tapered surface 523 on the other side. Is responsible for reducing the fluid pressure of the jet stream passing through the discharge hole (521).

In addition, one side of the ring body 51 of each of the decompression rings 5, that is, the wire electrode 4 and the side of the jet water discharge, protrude a plurality of legs 53 to jet flow between the decompression rings 5. The jet flow which reduces the fluid pressure in the other tapered surface 523 after passing through the delivery hole 521 of each electrode delivery guide 52 so that the space 54 for discharging is formed is a plurality of legs 53. As the discharge hole 521 of the decompression ring 5 provided at the end of the secondary discharge passage 3b while allowing it to fall into the primary and secondary discharge passages 3a and 3b through the space 54 between them. Only the wire electrode 4 is sent out.

Next, both side covers (2a) (2b) are assembled to the left and right sides of the recovering body (2) is a structure that is attached to the assembly parts such as the preceding invention (published Patent Publication No. 1995-0028851) described above It will be described as follows.

The upper portion of the upper side of the one side cover (2a) is assembled to one side of the main body of the collector 2, the upper portion so as to coincide with the upper connection passages (31a) (31b) of the primary and secondary discharge passage (3a) (3b) on a horizontal line The connector 6 is screwed, and the end of the threaded portion 61 of the upper connector 6 is in contact with the ring body 51 of the pressure reducing ring 5 inserted into the distal end of the upper connection passage 31a. The two legs 62 protrude so that the jet stream can flow into the primary discharge passage 3a through a space (not shown) formed between the legs 62 and inside the upper connection port 6. A tapered surface 63 for reducing the flow rate of the jet stream and a small diameter feed hole 64 for transferring the jet stream to the upper connecting passage 3a are formed.

In addition, the upper connector (6) is a screw connection connector 7 is assembled, the connection connector 7 is provided with a one-touch connector 72 for connecting the guide tube 71 for transferring the wire electrode and jet stream together. have.

Primary and secondary lower splices 8a and 8b are respectively assembled to the lower both sides of the one side cover 2a, and the primary lower splice 8a is one side of the lower portion 33a of the primary discharge passage 3a. While connected in a state directly connected to (the opposite side of the vortex attenuation passage), the secondary side lower connection port (8b) is an extended passage formed between one side of the lower side (33b) and one side cover (2a) of the secondary discharge passage (33b) 34), and one-touch connection ports 82a and 82b connected to the primary and secondary lower connection ports 8a and 8b are connected to the primary and secondary recovery pipes 81a and 81b, respectively. Each is installed.

Next, the ring body 51 of the decompression ring 5 installed at the end of the upper connection passage 31b of the secondary discharge passage 3b at the center of the upper end of the other cover 2b assembled on the other side of the main body of the recovery machine 2. An outlet 9 is assembled to be screwed to contact the plurality of legs 53 protruding from the outlet, and the outlet 9 is provided with a hole 91 for the wire electrode.

A base member 21 is attached to the bottom of the recoverer body 2 so that the jet stream recoverer 1 can be fixed to a mounting table (not shown) in a screw-assembled state.

The operation of the present invention configured as described above will be described.

The wire electrode 4 which discharged the workpiece and the jet stream are transferred together into the guide pipe 71 connected to one side of the jet flow recovery device 1, and the wire electrode 4 is transferred to the upper connector 6. Outlet hole of each of the several pressure reduction rings 5 inserted in the hole 64 and the upper connection passage 31a, 31b of the primary and secondary discharge passage 3a, 3b of the recoverer main body 2 in order, respectively. 521 and the discharge port 91 of the discharge port 9, and the jet flow to the guide tube 71 together with the wire electrode 4 is tapered surface 63 of the upper connector (6) Jet flow flowing into the upper connection passage 31a of the primary discharge passage 3a of the recoverer main body 2 through the feed hole 64 while the flow rate is primarily reduced by a plurality of pressure reducing rings 5 The inner diameter of the electrode delivery guide 52 inserted into the center of each of the decompression rings is rapidly decreased in the course of passing in turn. The flow rate is rapidly reduced by the one side taper surface 522, so that the jet flow is rapidly reduced in stages as it passes through each pressure reducing ring 5, and as the primary discharge passage 3a, A large amount of jet stream is discharged at a high flow rate, while a small amount of jet stream is discharged at a slow flow rate in the secondary discharge passage 3b.

When the jet stream is discharged to the primary discharge passage (3a) at a high flow rate as described above, the jet flow hits the lower portion (33a) and the discharge direction is changed, the vortex phenomenon appears, wherein the primary discharge passage (3a) In the lower portion 33a, the jet streams vortexing at the lower portion 33a are absorbed in the vortex absorption passage 34 extending to the rear side of the lower portion 33a, and thus the vortex action of the jet stream is attenuated. The jet flow of the jet flow is to be made smoothly, and the jet flow subjected to the fluid resistance force by the tapered surface 522 of one side of the pressure reducing ring (5) installed in the upper connection passage (31a) of the primary discharge passage (3a) The discharge to the primary discharge passage (3a) through the space 525 between each leg 524 is made smoothly, and thus the pressure reducing ring installed in the upper connection passage (31a) side of the primary discharge passage (3a) The wale being conveyed to the delivery hole 521 of (5). Control electrode 4 is to be transported to be so stable standing without fear of disconnection to protect against jet water flow discharged from the first exhaust passage (3a).

After passing through the decompression ring 5 installed in the upper connection passage 31a of the primary discharge passage 3a, the final decompression ring 5 installed at the end of the upper connection passage 31b of the secondary discharge passage 3b. The jet stream passing through the discharge hole 521 is in a state where the flow velocity becomes very slow and cannot be moved to the discharge port 9 side, and is discharged entirely through the secondary discharge passage 3b. In the delivery hole 91, only the wire electrode 4 is sent out.

Meanwhile, as described above, the jet streams discharged to the primary and secondary discharge passages 3a and 3b are stored in the jet stream recovery tanks through the primary and secondary recovery pipes 81a and 81b, and then again into the jet stream units. Is used to cool the wire electrode 4, and the wire electrode 4 sent out to the outlet 9 is discarded after being recovered into the wire recovery tank.

According to the present invention as described above by absorbing the vortex action of the jet stream discharged to the primary discharge passage by means of forming a vortex absorption passage extending toward the rear side in the lower portion of the primary discharge passage of the recoverer body The main effect is that the wire electrode can be transported without receiving the irregular resistance of the fluid due to the vortex action, so that the wire electrode can be sent out without fear of disconnection, and the jet flow is flowed into the primary and secondary discharge passages. In manufacturing a plurality of pressure reducing rings for discharging the wire electrode while discharging, the ring body is manufactured by dividing the whole of the pressure reducing ring into a ring body and an electrode discharging guide rather than using the expensive ceramic material. Made of cheap synthetic resin material, the small size electrode delivery guide is made of ceramic material or cemented carbide. Alternatively, since the pressure reducing ring can be constructed as a structure made of diamond material and then assembled, it can significantly reduce the production cost of the pressure reducing ring itself. In addition, the recovery body is made of synthetic resin and both covers are made of aluminum or brass. It is a useful design that offers the advantage of making the jet stream collector itself at a low production cost.

Claims (2)

One side cover formed with a connection hole at the top to connect the wire electrode and the guide tube for guiding the jet flow together, the other side cover is attached to the top of the outlet port for transferring only the wire electrode, and the two side cover screw assembly on each side A recovery main body, a primary and secondary discharge passages formed in an isolated state in the recovery main body, respectively, connecting passages connecting upper portions of the primary and secondary discharge passages, and inserted into the connection passages. A plurality of decompression rings for discharging the wire electrodes while allowing jet flow to be discharged to the primary and secondary discharge passages, and formed on both sides of the lower ends of the one side cover to communicate with the lower portions of the primary and secondary discharge passages. In the jet flow recovery device is connected to the primary side and the secondary side recovery pipe connected to the two connecting ports for recovering the jet flow, The lower portion of the primary discharge passage of the collector body is extended to the rear side while being spaced apart from the secondary discharge passage to form a vortex absorption passage to attenuate the vortex action of the jet stream in the primary discharge passage Jet stream recoverer of electric discharge machine. The method of claim 1, Each of the plurality of decompression rings inserted into the connection passage formed on the upper part of the first and second discharge passages of the recovering body is divided into electrode delivery guides inserted into the ring body and the cylindrical passage formed in the center of the ring body. Jet flow recovery device of the wire discharge processing machine, characterized in that assembled by.