A spark machine for die production

Abstract

The application discloses a spark machine for die production, which comprises an operation table, a lifting air suction assembly, a centrifugal air purification mechanism and a driving liquid pump. One side of the operation table is provided with a fixed stand, and a processing device is fixedly installed on the fixed stand. A storage cavity is formed in the operation table. The lifting air suction assembly comprises a supporting table, a fixed ring stand and a lifting air suction cover. The fixed ring stand is fixed on the supporting table, and the lifting air suction cover is inserted into the fixed ring stand. A plurality of uniformly distributed air purification suction holes are formed in the lifting air suction cover. The centrifugal air purification mechanism comprises an air purification protective shell, a centrifugal box, a transmission shaft and turbine blades. One end of the transmission shaft is inserted into the centrifugal box. Through the arrangement of the corresponding mechanism, the smoke generated by the spark machine during the machining process can be quickly cleaned, so that the smoke is not easy to spread to the surrounding environment and is not easy to be inhaled into the body of the workers, thereby avoiding the pollution of the surrounding environment and the harm to the bodies of the workers.

Description

Technical Field

[0001] This invention belongs to the field of EDM technology, specifically relating to an EDM machine for mold production. Background Technology

[0002] Electrical discharge machining (EDM) is primarily used for machining holes and cavities in mold production. It has become the dominant processing method in the mold manufacturing industry, driving technological advancements. It is widely used in the manufacture of various metal molds and mechanical equipment. EDM utilizes the electro-erosion effect generated by pulsed discharge between two electrodes immersed in a working fluid to remove conductive materials; it is also known as electrical discharge machining or electro-erosion machining.

[0003] However, when EDM machines process molds, they produce fumes with irritating odors. These fumes not only pollute the environment but are also harmful to human health, significantly impacting the working environment of operators. Furthermore, long-term inhalation of these fumes is detrimental to the health of operators.

[0004] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide an EDM machine for mold production. Summary of the Invention

[0005] The purpose of this invention is to provide an EDM machine for mold production, which can solve the problem that the smoke generated by the EDM machine during the processing is difficult to handle in the prior art.

[0006] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0007] A spark dies for mold production includes: an operating table, a lifting and suction assembly, a centrifugal purification mechanism, and a drive liquid pump;

[0008] A fixed frame is installed on one side of the operating table, and a processor is fixedly installed on the fixed frame. A storage cavity is carved out on the operating table.

[0009] The lifting and suction assembly is disposed on the operating table. The lifting and suction assembly includes a support platform, a fixing ring frame and a lifting and suction cover. The support platform is fixed on the operating table, the fixing ring frame is fixed on the support platform, and the lifting and suction cover is inserted into the fixing ring frame. The lifting and suction cover has multiple evenly distributed clean air suction holes.

[0010] The centrifugal air purification mechanism is located inside the operating table. The centrifugal air purification mechanism includes a purification protective shell, a centrifuge box, a drive shaft, and turbine blades. The centrifuge box is located inside the purification protective shell. One end of the drive shaft is inserted into the centrifuge box, and the turbine blades are fixed to one end of the drive shaft.

[0011] The drive fluid pump is installed inside the storage chamber and is used to extract coolant.

[0012] In one or more embodiments of the present invention, a spray pipe is installed on the fixed frame for spraying coolant onto the processing area, thereby reducing the probability of damage to the processor and improving the service life of the device. The bottom of the operating table is chiseled with multiple evenly distributed exhaust holes for discharging the inhaled gas and preventing the gas from accumulating inside the operating table.

[0013] In one or more embodiments of the present invention, the support platform is provided with a collection chamber and a pair of transition chambers. The collection chamber is used to collect coolant, which facilitates the recycling and reuse of coolant and reduces waste of resources. The transition chambers are used to provide space for the installation of the drive fan and to provide a channel for the flow of gas, which facilitates the flow of smoke. The side wall of the collection chamber is provided with multiple drain holes to facilitate the downward flow of coolant and facilitate recycling and reuse.

[0014] A first filter screen is fixedly installed inside the collection chamber for the first stage of filtration of the coolant, facilitating recycling and reuse. A pair of connecting pipes are fixed on the side wall of the collection chamber to facilitate the downward flow of the coolant for recycling and reuse. The two ends of the connecting pipes are respectively connected to the collection chamber and the storage chamber to facilitate the flow of coolant.

[0015] In one or more embodiments of the present invention, side column blocks are fixed on both sides of the support platform to facilitate the screwing in of the drive screw, thereby facilitating the fixing of the lifting air intake cover and making it difficult for the lifting air intake cover to move. Ear blocks are fixed on both sides of the lifting air intake cover to fix the drive screw, so that the drive screw can easily fix the lifting air intake cover, while the lifting air intake cover can no longer be lifted or moved.

[0016] The ear block is threaded with a drive screw, which is used to rotate and drive the lifting and lowering suction cover to move up and down. It can also fix the lifting and lowering suction cover at a certain height so that it will not move up and down. This allows multiple clean air suction holes to be exposed, making it convenient to quickly suck away the smoke generated during processing. The lower end of the drive screw is fixedly connected to the side column block with a fixed bearing, which is used to fix one end of the drive screw so that the rotation of the drive screw is not easily affected. This prevents the drive screw from shaking or tilting, thus improving the stability of the device.

[0017] In one or more embodiments of the present invention, the lifting suction cover is provided with a gas delivery groove to facilitate gas delivery, allowing gas to enter the transition chamber from the gas delivery groove. Multiple gas delivery pipes are fixed between the fixed ring frame and the support platform to connect the gas delivery groove and the transition chamber, enabling gas to be delivered and flow. A drive fan is provided in the transition chamber. After the drive fan is started, it can drive the flow of gas, causing multiple clean air suction holes to generate suction, thereby quickly sucking away the fumes generated during processing, preventing the fumes from spreading, and thus reducing the probability of fumes being inhaled by workers.

[0018] In one or more embodiments of the present invention, an air inlet pipe is fixed on the operating table, and the two ends of the air inlet pipe are respectively connected to the transition chamber and the centrifuge box, so that the gas drawn in after the fan is started can be transferred from the transition chamber to the centrifuge box, thereby facilitating the purification of the gas, effectively removing harmful components in the smoke, thereby avoiding pollution to the surrounding environment and preventing smoke from harming the staff.

[0019] In one or more embodiments of the present invention, a fixed ladder block is fixed inside the air purification protective shell to support and fix the drive motor, so as to prevent the drive motor from shaking or tilting and improve the stability of the device. The drive motor is fixedly installed inside the fixed ladder block to drive the rotation of the transmission shaft and turbine blades, thereby facilitating the rotation of the centrifuge and the smoke entering the centrifuge to achieve centrifugal purification. The output shaft of the drive motor is fixedly connected to the transmission shaft.

[0020] A support bearing is fixedly connected between the drive shaft and the fixed ladder block to support and fix the drive shaft, making it less prone to shaking or tilting, and ensuring that the rotation of the drive shaft is not affected. This allows the drive shaft to stably drive the centrifuge and turbine blades to rotate, thus improving the stability of the device.

[0021] In one or more embodiments of the present invention, the fixed ladder block is provided with multiple air passages to facilitate gas flow, allowing the gas to flow into the activated carbon filter element for further purification, thereby improving the purification effect on the smoke. The fixed ladder block is also equipped with an activated carbon filter element to further improve the purification effect on the smoke, so that the harmful components of the smoke are absorbed and discharged without causing pollution to the surrounding environment or harm to the health of the workers.

[0022] Several lower exhaust pipes are also fixed on the fixed ladder block. The lower end of the lower exhaust pipe is connected to the exhaust port, so that the purified gas can be discharged from the lower exhaust pipe into the exhaust port and then discharged outward from the exhaust port, avoiding the accumulation of smoke in the operating table and thus not affecting the subsequent inhalation of smoke.

[0023] In one or more embodiments of the present invention, a collection box is fixedly arranged between the fixed ladder block and the clean air protective shell, and a fixed net is fixed on the collection box so that the oil mist centrifuged out can gradually slide down into the collection box, thereby facilitating collection and recycling, reducing resource waste. A one-way valve is fixedly installed between the operating table and the clean air protective shell so that the resources collected in the collection box can flow into the storage chamber through the one-way valve, thereby recycling and reusing resources and saving costs for users.

[0024] In one or more embodiments of the present invention, a second filter screen is fixedly installed on the side wall of the exhaust port for secondary treatment of the coolant, thereby improving the treatment effect of the coolant and preventing impurities from continuing to fall and thus not being sucked away by the drive pump.

[0025] Compared with the prior art, the present invention, through the setting of a corresponding mechanism, enables the smoke generated by the EDM machine during processing to be quickly cleared, so that it is not easily dispersed into the surrounding area or inhaled by workers, thus preventing pollution to the surrounding environment and harm to the health of workers. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a perspective view of an EDM machine for mold production according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The structural diagram shown at point A in the middle;

[0029] Figure 3 This is a schematic diagram of the structure of the lifting air intake cover in one embodiment of the present invention;

[0030] Figure 4 This is a cross-sectional view of an EDM machine for mold production according to one embodiment of the present invention;

[0031] Figure 5 for Figure 4 The structural diagram shown at point B in the middle;

[0032] Figure 6 for Figure 4 The structural diagram shown at point C is as follows;

[0033] Figure 7 for Figure 4The structural diagram shown at point D is shown in the middle.

[0034] Figure 8 for Figure 4 The structural diagram shown at point E in the middle.

[0035] Explanation of key figure labels:

[0036] 1-Operating table, 101-Fixed frame, 102-Processor, 103-Spray pipe, 104-Storage chamber, 105-Exhaust port, 2-Lifting suction assembly, 201-Support platform, 202-Fixed ring frame, 203-Lifting suction cover, 204-Lower drain hole, 205-Clean air suction hole, 206-Side column block, 207-Ear block, 208-Drive screw, 209-Fixed bearing, 210-Air delivery channel, 211-Air delivery pipe, 212-Drive fan, 213-Collection chamber, 2 14-First filter screen, 215-Connecting pipe, 3-Centrifugal air purification mechanism, 301-Air purification protective shell, 302-Centrifuge box, 303-Drive shaft, 304-Turbine blade, 305-Inlet pipe, 306-Fixed ladder block, 307-Drive motor, 308-Support bearing, 309-Transmission air passage, 310-Activated carbon filter element, 311-Storage box, 312-Fixed net, 313-Drain pipe, 314-One-way valve, 315-Second filter screen, 4-Drive liquid pump. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0038] like Figures 1-8 As shown, an EDM machine for mold production according to one embodiment of the present invention includes: an operating table 1, a lifting and suction assembly 2, a centrifugal purification mechanism 3, and a drive liquid pump 4.

[0039] like Figures 1-8 As shown, a fixed frame 101 is installed on one side of the operating table 1, and a processor 102 is fixedly installed on the fixed frame 101. A storage cavity 104 is carved into the operating table 1. The lifting and suction assembly 2 is set on the operating table 1. The lifting and suction assembly 2 includes a support platform 201, a fixed ring frame 202, and a lifting and suction cover 203. The support platform 201 is fixed on the operating table 1, the fixed ring frame 202 is fixed on the support platform 201, and the lifting and suction cover 203 is inserted into the fixed ring frame 202. Multiple evenly distributed clean air suction holes 205 are carved into the lifting and suction cover 203.

[0040] Specifically, the fixed platform 101 supports and fixes the processor 102 to prevent it from shaking and falling off, thus improving the stability of the device. The processor 102 then processes the mold for production, while the spray pipe 103 sprays coolant to ensure safety during the processing. The storage chamber 104 stores coolant for easy extraction by the driving pump 4. After extraction by the driving pump 4, the coolant is transported through pipelines to the spray pipe 103 and then sprayed out from one end of the spray pipe 103.

[0041] In addition, the fixed ring 202 can ensure that the coolant will not spill and is easy to collect, while the raised lifting air intake cover 203 can expose multiple clean air intake holes 205. The fumes generated during the processing can be quickly sucked away by the multiple clean air intake holes 205, thereby preventing them from spreading outward and polluting the environment and from being inhaled by the workers.

[0042] like Figures 1-8 As shown, the centrifugal air purification mechanism 3 is located inside the operating table 1. The centrifugal air purification mechanism 3 includes a purification protective shell 301, a centrifuge chamber 302, a drive shaft 303, and turbine blades 304. The centrifuge chamber 302 is housed within the purification protective shell 301. One end of the drive shaft 303 is inserted into the centrifuge chamber 302, and the turbine blades 304 are fixed to one end of the drive shaft 303. A drive pump 4 is installed within the storage chamber 104 and is used to extract coolant.

[0043] Specifically, by introducing gas into the centrifuge chamber 302 and then using centrifugal purification, the gas is rotated by the centrifuge chamber 302 and the turbine blades 304, so that the gas and oil mist in the smoke can be separated. The oil mist will slide down the inner wall of the clean gas protective shell 301, and then be easily collected by the staff.

[0044] like Figures 1-2 As shown, a spray pipe 103 is installed on the fixed frame 101 for spraying coolant onto the processing area, thereby reducing the probability of damage to the processor 102 and improving the service life of the device. Multiple evenly distributed vent holes 105 are drilled at the bottom of the operating table 1 to expel the inhaled gas and prevent gas accumulation inside the operating table 1. Preferably, a drive pump 4 is connected to one end of the spray pipe 103, allowing the drive pump 4 to draw coolant from the storage chamber 104 and then deliver it to the spray pipe 103 for spraying, thus protecting the processor 102 and reducing the probability of damage to the processor 102 during processing.

[0045] like Figures 1-4As shown, the support platform 201 has a collection chamber 213 and a pair of transition chambers. The collection chamber 213 is used to collect coolant and facilitates the downward flow of the collected coolant, making it easy to recycle and reuse the coolant, reducing resource waste. The transition chambers provide space for the drive fan 212, enabling the drive fan 212 to drive gas flow and providing a channel for gas circulation, facilitating the flow of fumes, and allowing the clean air suction port 205 to generate suction to quickly remove the fumes generated during processing. Multiple drain holes 204 are carved on the side wall of the collection chamber 213 to facilitate the downward flow of coolant, making it easy to recycle and reuse the coolant, reducing resource waste and saving costs for the user.

[0046] like Figures 1-8 As shown, a first filter screen 214 is fixedly installed inside the collection chamber 213 for the first stage of filtration of the coolant, facilitating its recycling and reuse. A pair of connecting pipes 215 are fixed on the side wall of the collection chamber 213 to facilitate the downward flow of the coolant for recycling and reuse. The two ends of the connecting pipes 215 are respectively connected to the collection chamber 213 and the storage chamber 104 to facilitate the flow of coolant.

[0047] like Figures 1-5 As shown, side pillar blocks 206 are fixed on both sides of the support platform 201 to facilitate the screwing in of the drive screw 208, thereby facilitating the fixing of the lifting suction cover 203 and making it difficult for the lifting suction cover 203 to move. Ear blocks 207 are fixed on both sides of the lifting suction cover 203 to fix the drive screw 208, allowing the drive screw 208 to easily fix the lifting suction cover 203, while preventing the lifting suction cover 203 from moving up or down.

[0048] like Figures 1-5 As shown, a drive screw 208 is threaded onto the ear block 207, used to rotate and drive the lifting suction cover 203 to move up and down, and to fix the lifting suction cover 203 at a certain height so that it will not move up and down, thus exposing multiple clean air suction holes 205 for quick removal of fumes generated during processing. A fixed bearing 209 is fixedly connected between the lower end of the drive screw 208 and the side column block 206, used to fix one end of the drive screw 208, so that the rotation of the drive screw 208 is not easily affected, thus preventing the drive screw 208 from shaking or tilting, and improving the stability of the device.

[0049] like Figures 1-5As shown, the lifting suction cover 203 has a gas delivery groove 210 for facilitating gas delivery, allowing gas to enter the transition chamber from the gas delivery groove 210. Multiple gas delivery pipes 211 are fixed between the fixed ring frame 202 and the support platform 201 to connect the gas delivery groove 210 and the transition chamber, enabling gas flow. A drive fan 212 is installed inside the transition chamber. When the drive fan 212 is started, it drives the gas flow, causing the multiple clean air suction holes 205 to generate suction, thereby quickly removing the fumes generated during processing, preventing the fumes from spreading, and reducing the probability of workers inhaling the fumes.

[0050] like Figures 1-6 As shown, an air inlet pipe 305 is fixed on the operating table 1. The two ends of the air inlet pipe 305 are connected to the transition chamber and the centrifuge box 302 respectively, so that the gas drawn in after the fan 212 is started can be transferred from the transition chamber to the centrifuge box 302, thereby facilitating the purification of the gas, effectively removing harmful components in the smoke, and thus avoiding pollution to the surrounding environment and preventing smoke from harming the staff.

[0051] like Figures 1-6 As shown, a fixed step block 306 is fixed inside the clean air protection shell 301 to support and fix the drive motor 307, preventing the drive motor 307 from shaking or tilting and improving the stability of the device. The drive motor 307 is fixedly installed inside the fixed step block 306 to drive the rotation of the transmission shaft 303 and the turbine blades 304, thereby facilitating the rotation of the centrifuge box 302 and the smoke entering the centrifuge box 302 to achieve centrifugal purification; the output shaft of the drive motor 307 is fixedly connected to the transmission shaft 303.

[0052] A support bearing 308 is fixedly connected between the drive shaft 303 and the fixed step block 306 to support and fix the drive shaft 303, making it less prone to shaking or tilting, and will not affect the rotation of the drive shaft 303. This allows the drive shaft 303 to stably drive the centrifuge 302 and turbine blades 304 to rotate, thus improving the stability of the device.

[0053] like Figures 1-7 As shown, the fixed ladder block 306 has multiple air passages 309 for facilitating gas flow, allowing the gas to flow into the activated carbon filter element 310 for further purification, thereby improving the purification effect on the smoke. The fixed ladder block 306 also houses the activated carbon filter element 310 to further enhance the smoke purification effect, ensuring that harmful components in the smoke are absorbed and discharged without polluting the surrounding environment or harming workers.

[0054] like Figures 1-7As shown, several lower exhaust pipes 313 are also fixed on the fixed ladder block 306. The lower end of the lower exhaust pipe 313 is connected to the exhaust port 105, so that the purified gas can be discharged from the lower exhaust pipe 313 into the exhaust port 105, and then discharged outward from the exhaust port 105, so as to avoid the smoke from accumulating in the operating table 1 and thus not affecting the subsequent smoke inhalation.

[0055] like Figures 1-7 As shown, a collection box 311 is fixedly installed between the fixed ladder block 306 and the clean air protection shell 301. A fixing net 312 is fixed on the collection box 311, allowing the oil mist discharged by centrifugation to gradually slide down into the collection box 311, thus facilitating collection and recycling and reducing resource waste. A one-way valve 314 is fixedly installed between the operating table 1 and the clean air protection shell 301, allowing the resources collected in the collection box 311 to flow into the storage chamber 104 through the one-way valve 314, thereby recycling and reusing the resources and saving costs for the user.

[0056] A second filter screen 315 is fixedly installed on the side wall of the exhaust port 105 to perform a second treatment on the coolant, improve the treatment effect of the coolant, and prevent impurities from falling further and being sucked away by the drive pump 4.

[0057] In practical use, first rotate a pair of drive screws 208. The rotation of the drive screws 208 drives the ear block 207 and the lifting suction cover 203 to rise, thereby exposing multiple clean air suction holes 205. Then, control a pair of drive fans 212 to start, so that the drive fans 212 can drive the air flow, thereby causing the multiple clean air suction holes 205 to generate suction. Then, place the workpiece on the support table 201 and process it through the processor 102. The spray pipe 103 will spray coolant onto the processing area.

[0058] Smoke is generated during processing, which is quickly drawn away and transported to the transition chamber through the clean air suction hole 205, the air delivery groove 210 and the air delivery pipe 211. Then it is transported to the centrifuge box 302 through the air inlet pipe 305. The start of the drive motor 307 will drive the transmission shaft 303, the turbine blades 304 and the centrifuge box 302 to rotate, which will drive the gas to rotate, realizing oil-gas separation. The oil mist can splash out and then be adsorbed on the inner wall of the clean air protective shell 301. Then it slides down and falls into the collection box 311 through the fixing net 312. Finally, it flows into the storage chamber 104 through the one-way valve 314, realizing the recycling of resources.

[0059] The gas is then transported to the activated carbon filter 310 through the transmission channel 309, purified by the activated carbon filter 310, and finally discharged to the outside through the lower discharge pipe 313 and the exhaust port 105.

[0060] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spark dies for mold production, characterized in that, include: An operating table, a fixed frame is installed on one side of the operating table, a processor is fixedly installed on the fixed frame, and a storage cavity is carved out on the operating table; A lifting and suction assembly is provided on the operating table. The lifting and suction assembly includes a support platform, a fixing ring frame, and a lifting and suction cover. The support platform is fixed on the operating table, the fixing ring frame is fixed on the support platform, and the lifting and suction cover is inserted into the fixing ring frame. Multiple evenly distributed clean air suction holes are drilled on the lifting and suction cover. A centrifugal air purification mechanism is located inside the operating table. The centrifugal air purification mechanism includes a purification protective shell, a centrifuge box, a drive shaft, and turbine blades. The centrifuge box is located inside the purification protective shell. One end of the drive shaft is inserted into the centrifuge box, and the turbine blades are fixed to one end of the drive shaft. A drive fluid pump is installed inside the storage chamber and is used to extract coolant.

2. The EDM machine for mold production according to claim 1, characterized in that, The fixed frame is equipped with a spray pipe, and the bottom of the operating table has multiple evenly distributed vent holes.

3. The EDM machine for mold production according to claim 1, characterized in that, The support platform has a collection chamber and a pair of transition chambers. The side wall of the collection chamber has multiple drain holes. A first filter screen is fixedly installed in the collection chamber. A pair of connecting pipes are fixed on the side wall of the collection chamber. The two ends of the connecting pipes are respectively connected to the collection chamber and the storage chamber.

4. The EDM machine for mold production according to claim 1, characterized in that, Side column blocks are fixed on both sides of the support platform, and ear blocks are fixed on both sides of the lifting air intake cover. A drive screw is threaded onto the ear block, and a fixed bearing is fixedly connected between the lower end of the drive screw and the side column block.

5. The EDM machine for mold production according to claim 3, characterized in that, The lifting air intake cover has an air delivery groove, and multiple air delivery pipes are fixed between the fixed ring frame and the support platform. A drive fan is installed in the transition cavity.

6. The EDM machine for mold production according to claim 5, characterized in that, An air inlet pipe is fixed on the operating table, and the two ends of the air inlet pipe are respectively connected to the transition chamber and the centrifuge box.

7. The EDM machine for mold production according to claim 2, characterized in that, A fixed ladder block is fixed inside the air purification protective shell, and a drive motor is fixedly installed inside the fixed ladder block. The output shaft of the drive motor is fixedly connected to the transmission shaft, and a support bearing is fixedly connected between the transmission shaft and the fixed ladder block.

8. The EDM machine for mold production according to claim 7, characterized in that, The fixed ladder block has multiple air transmission channels, and an activated carbon filter is installed inside the fixed ladder block. Several lower exhaust pipes are also fixed on the fixed ladder block, and the lower end of the lower exhaust pipes is connected to the exhaust port.

9. The EDM machine for mold production according to claim 8, characterized in that, A storage box is fixedly installed between the fixed ladder block and the clean air protection shell, and a fixing net is fixed on the storage box. A one-way valve is fixedly installed between the operating table and the clean air protection shell.

10. A spark dies for mold production according to claim 9, characterized in that, A second filter screen is fixedly installed on the side wall of the exhaust port.

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