Wire cutting machine tool with automatic water and liquid adding function

Abstract

The application discloses a linear cutting machine tool with automatic water and liquid adding functions, and belongs to the technical field of linear cutting machine tools, which comprises an electric spark cutting machine unit, an automatic liquid supplement assembly unit and a controller; the electric spark cutting machine unit comprises a bed body, a liquid supply pipe, a liquid outlet pipe and an air exhaust pipe arranged on the bed body, and a negative pressure filter box arranged on one side of the bed body and connected with the air exhaust pipe. In the process of controlling the peristaltic pump to deliver the cutting fluid stock solution into the liquid storage tank, the cutting fluid stock solution and clean water in the liquid storage tank can be stirred, the cutting fluid stock solution and the clean water are disturbed with each other, the mixing speed between the two is accelerated, the local gathering of the cutting fluid stock solution is avoided, the overall mixing uniformity of the cutting mixed solution is improved, the mixed solution concentration in the liquid storage tank tends to be consistent, the detection result deviation caused by the local enrichment of the cutting fluid stock solution is effectively avoided, and thus the detection accuracy of the mixed solution concentration detection component on the cutting mixed solution in the liquid storage tank is improved.

Description

Technical Field

[0001] This invention relates to the field of wire EDM machine tool technology, and more specifically, to a wire EDM machine tool with automatic water and liquid addition function. Background Technology

[0002] Wire EDM machines are widely used in the processing of molds, precision parts, and other fields, relying on pulsed discharge to achieve metal removal. The cutting fluid mixture is a key medium in wire EDM; its concentration uniformity and ratio stability directly affect processing accuracy, workpiece quality, and electrode wire lifespan. To overcome the drawbacks of traditional manual mixing and adding of cutting fluid—low efficiency, large errors, and high costs—wire EDM machines with automatic water and fluid addition functions have become widespread. Through an automated control system combined with a pump and detection components, they can automatically complete the mixing, replenishment, and circulation of cutting fluid and clean water, eliminating the need for frequent manual operation. This effectively improves the automation level and processing continuity of the equipment, making them suitable for large-scale precision machining scenarios.

[0003] Currently, most automatic water-filling wire EDM machines employ a liquid supply structure consisting of a reservoir and a peristaltic pump, relying on a built-in concentration detection component to monitor the concentration of the mixed liquid in real time. When the liquid level in the reservoir is low due to cutting fluid loss, the control system drives the peristaltic pump to deliver the original cutting fluid and replenishes it with clean water, automatically adjusting the concentration and level of the mixed liquid. However, in actual use, these existing wire EDM machines with automatic water-filling functions suffer from several problems. Because the reservoir of the cutting machine is a static mixing structure, relying solely on natural diffusion and penetration for mixing, the peristaltic pump can easily cause localized accumulation of the original fluid during replenishment. This results in poor uniformity of the mixed liquid within the reservoir, and abnormal concentration data in locally concentrated areas can lead to detection deviations and misjudgments. Adjusting the replenishment based on this can further exacerbate the concentration imbalance, causing instability in the cooling, lubrication, and deionization effects of the cutting fluid. This can easily lead to problems such as workpiece machining accuracy deviations, substandard surface quality, accelerated electrode wire wear, and wire breakage, affecting the cutting accuracy and processing effect of the wire EDM machine, reducing equipment processing stability and finished product qualification rate, and failing to meet the requirements of high-precision wire EDM processing.

[0004] In view of this, we propose a wire cutting machine tool with automatic water and liquid addition function. Summary of the Invention

[0005] Technical problems to be solved The purpose of this invention is to provide a wire cutting machine tool with automatic water and liquid addition function, which solves the technical problems mentioned in the background art.

[0006] Technical solution The present invention provides a wire cutting machine tool with automatic water and liquid replenishment function, including an electrical discharge cutting machine unit, an automatic liquid replenishment component unit, and a controller; The electric spark cutting machine unit includes a bed, a liquid supply pipe, a liquid outlet pipe and an air extraction pipe installed on the bed, and a negative pressure filter box installed on one side of the bed and connected to the air extraction pipe. The automatic fluid replenishment unit includes a storage tank, and an automatic water replenishment component, an automatic cutting fluid replenishment component, a mixed solution concentration detection component, and a solution mixing component installed on the storage tank; The storage tank is equipped with a water level monitoring component, which is used to monitor the liquid level of the solution in the storage tank, and a liquid supply pump connected to the liquid supply pipe is fixedly installed on the storage tank. The automatic water replenishment component is used to replenish the water in the storage tank, the automatic cutting fluid replenishment component is used to replenish the cutting fluid in the storage tank, and the solution mixing component is used to mix the water and cutting fluid in the storage tank to form a cutting fluid mixture. The mixture concentration detection component is used to detect the concentration of the cutting fluid mixture after mixing in the storage tank; The automatic water replenishment component, the automatic cutting fluid replenishment component, the mixed solution concentration detection component, and the solution mixing component are all connected to the controller in communication.

[0007] Preferably, the water level monitoring component includes a high water level monitoring probe and a low water level monitoring probe. The top of one side of the liquid storage tank has an upper mounting hole communicating with its interior, and the bottom of one side has a lower mounting hole communicating with its interior. The high water level monitoring probe is fixedly installed in the upper mounting hole, and the low water level monitoring probe is fixedly installed in the lower mounting hole. The mixture concentration detection component includes a concentration monitoring and analysis instrument fixedly installed on one side of the storage tank, and a concentration detection probe fixedly installed in the middle of the inner wall of the storage tank. The concentration detection probe is communicatively connected to the concentration monitoring and analysis instrument.

[0008] Preferably, the automatic water replenishment component includes a water replenishment pipe fixedly installed on the top of the storage tank, and a water passage pipe fixedly installed on the storage tank and connected to the water replenishment pipe. A solenoid valve and a flow meter are fixedly installed on the water passage pipe, and the other end of the water passage pipe is connected to the top of the storage tank. The automatic cutting fluid replenishment component includes a storage tank located on one side of the storage tank, which is used to store the original cutting fluid. A peristaltic pump is fixedly installed on the top of the storage tank. A connecting pipe 1 extending into the storage tank is fixedly installed at the inlet end of the peristaltic pump, and a connecting pipe 2 is fixedly installed at the outlet end. The other end of the connecting pipe 2 is connected to the top of the storage tank.

[0009] Preferably, the solution mixing component includes an air inlet pipe fixedly installed on the liquid storage tank and extending into it, and an air outlet pipe unit connected to the bottom of the air inlet pipe is installed inside the liquid storage tank, which includes a connecting pipe, a middle connecting pipe, a first connecting pipe, an inner connecting pipe, a second connecting pipe, and an outer connecting pipe. The connecting pipe is connected to the bottom of the intake pipe. A horizontal middle connecting pipe is connected through one side of the connecting pipe, and connecting pipe fittings are symmetrically connected to both ends of the connecting pipe. A horizontal inner connecting pipe is fixedly installed on one side of the connecting pipe fitting. A second connecting pipe is installed at the ends of the two connecting pipe fittings that are far apart from each other. A horizontal outer connecting pipe is fixedly installed at the ends of the two connecting pipe fittings that are far apart from each other. The axes of the outer connecting pipe, inner connecting pipe and middle connecting pipe are parallel. Multiple exhaust square pipes are connected through the top of the outer connecting pipe, inner connecting pipe and middle connecting pipe. Exhaust holes are opened on both sides of the exhaust square pipe and communicate with its interior. A one-way valve is fixedly installed in the exhaust hole of the exhaust square pipe.

[0010] Preferably, a negative pressure pump is fixedly installed on the negative pressure filter box. The air inlet of the negative pressure pump is connected to the inside of the negative pressure filter box through a connecting pipe three, and an air guide pipe is fixedly installed on the air outlet. A venting box connected to the air guide pipe is fixedly installed on the negative pressure filter box. An exhaust pipe is connected through one side of the venting box, and a venting pipe connected through the venting box is connected to the air inlet pipe. A sealing plate for sealing the exhaust pipe or venting pipe is rotatably connected inside the venting box, and a motor for driving the sealing plate to rotate is fixedly installed on the venting box.

[0011] Preferably, the connecting pipe fitting includes a corrugated hose fixedly connected to one end of the connecting pipe, a connecting pipe fixedly installed at the other end of the corrugated hose, and a return spring sleeved on the outside of the corrugated hose fixedly installed between the connecting pipe and the connecting pipe. The second connecting pipe includes a second corrugated hose fixedly connected to the other end of the connecting pipe, and a connecting bend fixedly connected to the other end of the second corrugated hose. A second return spring sleeved on the outside of the second corrugated hose is fixedly installed between the connecting pipe and the connecting bend. A sliding seat is fixedly installed on the inner bottom wall of the liquid storage tank. Two inner sliding plates are symmetrically and horizontally slidably connected to the sliding seat. Two outer sliding plates are symmetrically and horizontally slidably connected to the sliding seat outside the two inner sliding plates. The two inner sliding plates are fixedly connected to two connecting pipes respectively. The two outer sliding plates are fixedly connected to two connecting bends respectively. A drive assembly is installed on the liquid storage tank and is connected to both the two inner sliding plates and the two outer sliding plates. It is used to make the two inner sliding plates and the two outer sliding plates slide on the sliding seat.

[0012] Preferably, the drive assembly includes a horizontally oriented shaft rotatably mounted on the liquid storage tank. One end of the shaft extends into the liquid storage tank, and a first winding roller and a second winding roller are coaxially fixed to the end of the shaft extending into the liquid storage tank. Two first pull ropes are wound on the first winding roller, and the other ends of the two first pull ropes are respectively fixed to two inner sliding plates. Two second pull ropes are wound on the second winding roller, and the other ends of the two second pull ropes are respectively fixed to two outer sliding plates. A drive component for driving the shaft to reciprocate is installed on the liquid storage tank.

[0013] Preferably, the first winding roller has two winding grooves, and the ends of the two pull ropes are respectively wound into the two winding grooves. The second winding roller has two winding grooves, and the ends of the two pull ropes are respectively wound into the two winding grooves. The inner diameter of the first winding groove is smaller than the inner diameter of the second winding groove.

[0014] Preferably, the liquid storage tank is equipped with a liquid filtration assembly connected to the liquid outlet pipe, and the liquid outlet end of the liquid filtration assembly is connected to the inside of the liquid storage tank. The liquid filtration assembly includes a filter housing fixedly installed on the top of the storage tank, an outlet pipe end connected to the top of the filter housing, a fixing ring fixedly installed on the inner wall of the filter housing and on one side of the outlet pipe, a filter cylinder fixedly installed inside the fixing ring, the other end of the filter cylinder abutting against the inner wall of the filter housing, a drain pipe connected to the bottom of the filter housing and below the filter cylinder, a waste liquid pipe connected to the end of the filter housing and communicating with the inside of the filter cylinder, a second solenoid valve fixedly installed on the drain pipe, and a third solenoid valve fixedly installed on the waste liquid pipe.

[0015] Preferably, the liquid storage tank is equipped with a cleaning component for cleaning the inner wall of the filter cartridge, which includes a cleaning brush that is horizontally oriented and rotatably installed inside the filter housing. The outer wall of the cleaning brush is in contact with the inner wall of the filter cartridge, and a reduction motor for driving the cleaning brush to rotate is fixedly installed on the liquid storage tank.

[0016] Beneficial effects One or more technical solutions provided in this invention have at least the following technical effects or advantages: 1. By incorporating a solution mixing component, the cutting fluid concentrate and purified water in the reservoir are agitated during the peristaltic pump's delivery of the concentrate to the reservoir. This agitation accelerates the mixing process, preventing localized accumulation of the cutting fluid concentrate and improving the overall uniformity of the mixture. This helps to ensure a more consistent concentration throughout the reservoir, effectively preventing deviations in test results caused by localized concentrations of the cutting fluid concentrate. Consequently, the accuracy of the concentration detection component for the cutting fluid mixture in the reservoir is improved, reducing misjudgments due to uneven local concentrations.

[0017] 2. In the process of controlling the peristaltic pump to deliver the cutting fluid stock solution into the reservoir, improving the overall mixing uniformity of the cutting fluid mixture can enhance the stability of the cutting fluid concentration output from the reservoir. This allows the cutting fluid to fully exert its functions of cooling, insulation, chip removal, and arc extinguishing, thereby reducing problems such as wire breakage, deterioration of the machined surface quality, and unstable discharge caused by fluctuations in cutting fluid concentration. This helps ensure that the EDM machine can continuously and stably carry out cutting operations and improve the workpiece cutting quality.

[0018] 3. During use, the peristaltic pump is controlled by the controller to deliver cutting fluid concentrate to the storage tank. At the same time, the motor is controlled to rotate the sealing plate to block the exhaust pipe. At this time, the vent pipe is connected to the vent box. When the negative pressure pump works to draw the air out of the negative pressure filter box, it can be delivered to the air inlet pipe through the vent pipe to achieve the effect of injecting air into the air inlet pipe. There is no need to add an independent air supply device, which reduces the equipment cost.

[0019] 4. Through the design of the sliding seat, inner slide plate, outer slide plate, and drive assembly, when the peristaltic pump is controlled by the controller to deliver cutting fluid concentrate into the reservoir, the controller simultaneously controls the second motor to continuously wind and unwind the two pull ropes, thereby driving the two inner and two outer connecting pipes to move horizontally back and forth. This simultaneously drives the exhaust square pipes on the inner and outer connecting pipes to move horizontally back and forth, thus simultaneously agitating the solution from multiple positions from the middle of the reservoir to the side of the tank, promoting solution flow, accelerating the overall mixing speed, and improving the overall mixing efficiency. At the same time, it further prevents the cutting fluid mixture discharged through the drain pipe and the cutting fluid concentrate injected into the reservoir from accumulating below the pipe opening, causing localized uneven concentration.

[0020] 5. Utilizing a special design that staggers the venting square pipes on the inner and outer connecting pipes, the displacement of multiple venting square pipes on the inner connecting pipe allows the liquid to flow to both sides through the venting square pipes. The liquid flowing to both sides of the venting square pipes then comes into contact with the venting square pipes on the outer connecting pipes, thereby forming multiple intersecting liquid flows within the storage tank. This facilitates the mixing of liquids in different areas and further improves the uniformity of the cutting fluid mixture.

[0021] 6. Utilizing the special design that the inner diameter of the first winding groove is smaller than that of the second winding groove, the reciprocating rotation of the shaft continuously winds and unwinds the two pull ropes. This results in the two outer sliding plates sliding at a greater speed than the two inner sliding plates, and the outer connecting pipe displaces at a greater speed than the inner connecting pipe. When mixing the liquid in the storage tank, this accelerates the flow disturbance of the solution in the edge area of ​​the storage tank, thus helping to reduce solution stagnation and local concentration stratification at the corners. Furthermore, the different sliding speeds inside and outside create a speed difference, constructing a gradient solution flow field inside the storage tank. This promotes convection and exchange between the solution at the edge and center of the storage tank, improving the overall solution mixing uniformity and further enhancing the mixing effect. This effectively avoids problems such as wire breakage, deterioration of the processed surface quality, and unstable discharge caused by fluctuations in cutting fluid concentration during wire cutting, ensuring the quality of workpiece cutting.

[0022] 7. By incorporating a cleaning component, when the cutting fluid level in the storage tank drops below the low-level monitoring probe due to usage losses, the controller opens solenoid valve one to replenish the storage tank with purified water. Simultaneously, the controller closes solenoid valve two and opens solenoid valve three, driving a geared motor to rotate the cleaning brush. This brush sweeps away dust adhering to the inner wall of the filter cartridge, and the dust is discharged through the waste pipe along with the liquid flowing into the filter housing, effectively cleaning any remaining dust in the filter cartridge. When purified water is continuously added to the storage tank, causing the fluid level to rise to the high-level monitoring probe, the controller closes the geared motor, opens solenoid valve two, and closes solenoid valve three. This effectively prevents the waste of cutting fluid concentrate after subsequent replenishment through the waste pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the installation structure of the liquid supply pump of the present invention.

[0025] Figure 3 This is a schematic diagram of the installation structure of the automatic water purification replenishment component of the present invention.

[0026] Figure 4 For the present invention Figure 3 A magnified schematic diagram of a portion of the structure in section A.

[0027] Figure 5 This is a schematic diagram of the installation structure of the negative pressure pump of the present invention.

[0028] Figure 6 For the present invention Figure 5 A magnified schematic diagram of a local structure in section B.

[0029] Figure 7 This is a schematic diagram of the installation structure of the water level monitoring component of the present invention.

[0030] Figure 8 This is a schematic diagram of the installation structure of the solution mixing component of the present invention.

[0031] Figure 9 This is a schematic diagram of the installation structure of the connecting pipe fitting of the present invention.

[0032] Figure 10 This is a schematic diagram of the installation structure of the winding roller of the present invention.

[0033] Figure 11 This is a schematic diagram of the installation structure of the cleaning brush of the present invention.

[0034] Figure 12 For the present invention Figure 7 A magnified schematic diagram of a local structure in section C.

[0035] Explanation of the labels in the diagram: 1. Bed; 11. Liquid supply pipe; 12. Liquid outlet pipe; 13. Air extraction pipe; 14. Filter box; 141. Negative pressure pump; 142. Ventilation box; 143. Exhaust pipe; 144. Ventilation pipe; 145. Sealing plate; 146. Motor 1; 2. Liquid storage tank; 21. Water level monitoring component; 211. High water level monitoring probe; 212. Low water level monitoring probe; 22. Liquid supply pump; 23. Sliding seat; 231. Inner sliding plate; 232. Outer sliding plate; 3. Automatic water purification system replenishment component; 31. Water replenishment pipe; 32. Water supply pipe; 33. Solenoid valve 1; 34. Flow meter; 4. Automatic cutting fluid replenishment unit; 41. Fluid reservoir; 42. Peristaltic pump; 5. Mixture concentration detection component; 51. Concentration monitoring and analysis instrument; 52. Concentration detection probe; 6. Solution mixing component; 61. Inlet pipe; 62. Connecting pipe; 63. Middle connecting pipe; 64. Connecting fitting one; 641. Corrugated hose one; 642. Connecting pipe; 643. Return spring one; 65. Inner connecting pipe; 66. Connecting fitting two; 661. Corrugated hose two; 662. Connecting elbow; 663. Return spring two; 67. Outer connecting pipe; 68. Exhaust square pipe; 681. Check valve; 7. Drive assembly; 71. Rotary shaft; 72. Winding roller one; 721. Winding groove one; 73. Winding roller two; 731. Winding groove two; 74. Pull rope one; 75. Pull rope two; 76. Drive component; 8. Liquid filtration assembly; 81. Filter housing; 82. Fixing ring; 83. Filter cylinder; 84. Drain pipe; 85. Waste liquid pipe; 86. Solenoid valve two; 87. Solenoid valve three; 9. Cleaning components; 91. Cleaning brush; 92. Gear motor. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Example 1, refer to Figures 1-12 The first embodiment of the present invention provides a wire cutting machine tool with automatic water and liquid addition function, including an electrical discharge cutting machine unit, an automatic liquid replenishment component unit and a controller. The controller has a built-in PLC control system. The PLC control system has preset cutting mixture concentration ratio threshold and preset liquid supply pump 22 working time threshold after the cutting fluid original liquid is quantitatively replenished. The electric discharge cutting machine unit includes a bed 1, a liquid supply pipe 11, a liquid outlet pipe 12 and an air extraction pipe 13 disposed on the bed 1, and a negative pressure filter box 14 disposed on one side of the bed 1 and connected to the air extraction pipe 13. Specifically, it should be noted that the installation structure between the liquid supply pipe 11, the liquid outlet pipe 12 and the air extraction pipe 13 and the bed 1, and the installation structure between the air extraction pipe 13 and the negative pressure filter box 14 are all existing technologies and are known to those skilled in the art, and will not be described in detail here. The automatic fluid replenishment unit includes a storage tank 2, and an automatic water replenishment component 3, an automatic cutting fluid replenishment component 4, a mixed liquid concentration detection component 5, and a solution mixing component 6 installed on the storage tank 2. The storage tank 2 is equipped with a water level monitoring component 21, which is used to monitor the liquid level of the solution in the storage tank 2, and a liquid supply pump 22 connected to the liquid supply pipe 11 is fixedly installed on the storage tank 2. The automatic water replenishment component 3 is used to replenish the water in the storage tank 2, the automatic cutting fluid replenishment component 4 is used to replenish the cutting fluid in the storage tank 2, and the solution mixing component 6 is used to mix the water and cutting fluid in the storage tank 2 to form a cutting mixture. The mixture concentration detection component 5 is used to detect the concentration of the cutting fluid mixture after mixing in the storage tank 2; The automatic water purification fluid replenishment component 3, the automatic cutting fluid replenishment component 4, the mixed solution concentration detection component 5, and the solution mixing component 6 are all connected to the controller in communication. The water level monitoring component 21 includes a high water level monitoring probe 211 and a low water level monitoring probe 212. The top of one side of the liquid storage tank 2 is provided with an upper mounting hole communicating with its interior, and the bottom of one side is provided with a lower mounting hole communicating with its interior. The high water level monitoring probe 211 is fixedly installed in the upper mounting hole, and the low water level monitoring probe 212 is fixedly installed in the lower mounting hole. The mixture concentration detection component 5 includes a concentration monitoring and analysis instrument 51 fixedly installed on one side of the storage tank 2, and a concentration detection probe 52 fixedly installed in the middle of the inner wall of the storage tank 2. The concentration detection probe 52 is communicatively connected to the concentration monitoring and analysis instrument 51. The automatic water replenishment component 3 includes a water replenishment pipe 31 fixedly installed on the top of the storage tank 2. Specifically, the water replenishment pipe 31 is connected to the delivery end of an external water purification pump, and a water passage pipe 32 fixedly installed on the storage tank 2 and connected to the water replenishment pipe 31. A solenoid valve 33 and a flow meter 34 are fixedly installed on the water passage pipe 32, and the other end of the water passage pipe 32 is connected to the top of the storage tank 2. The automatic cutting fluid replenishment component 4 includes a storage tank 41 located on one side of the storage tank 2, which is used to store the original cutting fluid. A peristaltic pump 42 is fixedly installed on the top of the storage tank 2. A connecting pipe 1 extending into the storage tank 41 is fixedly installed at the inlet end of the peristaltic pump 42, and a connecting pipe 2 is fixedly installed at the outlet end. The other end of the connecting pipe 2 is connected through to the top of the storage tank 2.

[0040] The solution mixing component 6 includes an air inlet pipe 61 fixedly installed on the liquid storage tank 2 and extending into it. The liquid storage tank 2 is equipped with an air outlet pipe unit connected to the bottom of the air inlet pipe 61, which includes a connecting pipe 62, a middle connecting pipe 63, a first connecting pipe 64, an inner connecting pipe 65, a second connecting pipe 66, and an outer connecting pipe 67. The connecting pipe 62 is connected to the bottom of the intake pipe 61. A horizontally oriented middle connecting pipe 63 is connected through one side of the connecting pipe 62, and connecting pipe fittings 64 are symmetrically connected to both ends of the connecting pipe 62. A horizontally oriented inner connecting pipe 65 is fixedly installed on one side of each connecting pipe fitting 64. A second connecting pipe 66 is installed at the ends of the two connecting pipe fittings 64 that are far apart from each other. A horizontally oriented outer connecting pipe 67 is fixedly installed at the ends of the two connecting pipe fittings 66 that are far apart from each other. The outer connecting pipe 67 and the inner connecting pipe 65... The axes of pipe 65 and middle connecting pipe 63 are parallel. Multiple exhaust square pipes 68 are connected through the top of outer connecting pipe 67, inner connecting pipe 65 and middle connecting pipe 63. The exhaust square pipes 68 on inner connecting pipe 65 and exhaust square pipes 68 on outer connecting pipe 67 are staggered. Both sides of exhaust square pipe 68 are provided with exhaust holes that communicate with their interiors. A one-way valve 681 is fixedly installed in the exhaust hole of the exhaust square pipe 68. The one-way valve 681 allows gas to flow unidirectionally from the interior of the exhaust square pipe 68 to its exterior. The liquid storage tank 2 is equipped with a liquid filter assembly 8 connected to the liquid outlet pipe 12, and the liquid outlet end of the liquid filter assembly 8 is connected to the inside of the liquid storage tank 2. The liquid filtration assembly 8 includes a filter housing 81 fixedly installed on the top of the liquid storage tank 2. The end of the outlet pipe 12 is connected to the top of the filter housing 81. A fixing ring 82 is fixedly installed on the inner wall of the filter housing 81, located on one side of the outlet pipe 12. A filter cylinder 83 is fixedly installed inside the fixing ring 82. The other end of the filter cylinder 83 abuts against the inner wall of the filter housing 81. A drain pipe 84 is connected to the bottom of the filter housing 81, located below the filter cylinder 83. A drain pipe 84 is connected to the end of the filter housing 81. The waste liquid pipe 85 is connected to the inside of the filter cartridge 83. A solenoid valve 2 86 is fixedly installed on the drain pipe 84. A solenoid valve 3 87 is fixedly installed on the waste liquid pipe 85. Specifically, the filter shell 81 includes an outer shell fixedly installed on the storage tank 2. One end of the outer shell is open. A shell cover is fixedly installed on the outer shell by screws. A fixing ring 82 is fixed inside the outer shell, and the outer side wall of the fixing ring 82 is in contact with the inner side wall of the outer shell. The outlet pipe 12, the drain pipe 84 and the waste liquid pipe 85 are all connected to the outer shell.

[0041] During the cutting operation, the liquid supply pump 22 operates to extract the cutting fluid from the storage tank 2, which flows out through the supply pipe 11 and sprays onto the cutting area. It then flows back through the outlet pipe 12 into the filter housing 81, and then into the filter cylinder 83. The filter cylinder 83 filters out dust particles from the liquid, leaving the dust particles inside. The filtered cutting fluid then flows back down through the drain pipe 84 into the storage tank 2 for reuse. The negative pressure filter box 14 operates by drawing the fumes generated during cutting into the negative pressure filter box 14 through the exhaust pipe 13, where they are filtered and then discharged. During operation, when the cutting fluid level in the storage tank 2 drops below the low-level monitoring probe 212 due to wear and tear, the probe's signal changes and is fed back to the controller. The controller then opens the solenoid valve 33, activating the external water supply pump connected to the water supply pipe 31. This pump delivers purified water through the supply pipe 31 to the water pipe 32, replenishing the storage tank 2. As purified water is continuously added to the storage tank 2, the fluid level rises to the high-level monitoring probe 211, causing a change in the probe's signal, which is also fed back to the controller. The controller controls the solenoid valve 33 to close. During the replenishment of purified water, when the purified water flows in the water pipe 32, the flow meter 34 detects and measures the amount of purified water flowing in the water pipe 32 and feeds back the amount of purified water replenishment to the controller. Based on the preset cutting fluid concentration ratio in the PLC control system, the amount of cutting fluid stock solution to be replenished is calculated. Then, the controller controls the peristaltic pump 42 to work and deliver the cutting fluid stock solution stored in the storage tank 41 to the storage tank 2. When the amount of cutting fluid stock solution delivered by the peristaltic pump 42 reaches the required amount of cutting fluid stock solution to be replenished, the controller controls the peristaltic pump 42 to close, thereby achieving the effect of automatically adding water and liquid to the storage tank 2. During this period, the concentration detection probe 52 is located inside the cutting fluid mixture. After the quantitative replenishment of the cutting fluid stock solution is completed, when the supply pump 22 continues to work for the time threshold preset in the PLC control system after the quantitative replenishment of the cutting fluid stock solution is completed, the concentration monitoring analyzer 51 analyzes the concentration of the cutting fluid mixture detected by the concentration detection probe 52. If the concentration of the cutting fluid mixture in the reservoir 2 is within the range of the cutting fluid mixture concentration ratio threshold preset in the PLC control system, it indicates that the automatic water and fluid replenishment in the reservoir 2 is completed; otherwise, based on the analyzed cutting fluid mixture concentration, it is determined that the reservoir 2 is short of water or cutting fluid stock solution. Then, the controller controls the solenoid valve 33 or the peristaltic pump 42 to perform a secondary water or fluid replenishment operation in the reservoir 2, so that the concentration of the cutting fluid mixture in the reservoir 2 reaches the cutting fluid mixture concentration ratio threshold preset in the PLC control system.

[0042] By incorporating a solution mixing component 6, gas is simultaneously supplied to the air inlet pipe 61 while the peristaltic pump 42 delivers the cutting fluid concentrate to the reservoir 2. The gas flows through the central connecting pipe 63, the two inner connecting pipes 65, and the two outer connecting pipes 67, and is then discharged outwards through one-way valves 681 on the multiple exhaust square pipes 68. As the gas rises and flows within the reservoir 2, it agitates the cutting fluid concentrate and purified water, promoting mutual agitation and accelerating the mixing speed. This prevents localized accumulation of the cutting fluid concentrate, improves the overall uniformity of the cutting fluid mixture, and facilitates thorough mixing throughout the reservoir 2. The uniformity of the fluid concentration effectively avoids deviations in detection results caused by localized enrichment of the original cutting fluid, thereby improving the accuracy of the fluid concentration detection component 5 in detecting the cutting fluid mixture in the reservoir 2 and reducing misjudgments caused by uneven local concentrations. At the same time, improving the overall uniformity of the cutting fluid mixture can enhance the stability of the cutting fluid concentration output from the reservoir 2, which is conducive to the cutting fluid fully exerting its functions of cooling, insulation, chip removal, and arc extinguishing. This reduces the occurrence of problems such as wire breakage, deterioration of the machined surface quality, and unstable discharge caused by fluctuations in cutting fluid concentration, and helps ensure that the EDM machine can continuously and stably carry out cutting operations, thus improving the workpiece cutting quality.

[0043] Example 2, refer to Figures 3-12 This is the second embodiment of the present invention, which differs from the first embodiment in that: A negative pressure pump 141 is fixedly installed on the negative pressure filter box 14. The air inlet of the negative pressure pump 141 is connected to the inside of the negative pressure filter box 14 through a connecting pipe three, and an air guide pipe is fixedly installed on the air outlet. Specifically, an adsorption filter plate for sealing the inside of the negative pressure filter box 14 is installed inside. The installation structure of the adsorption filter plate is existing technology and will not be described in detail here. The connection point between the connecting pipe three and the negative pressure filter box 14 is located on the side of the adsorption filter plate away from the exhaust pipe 13. A ventilation box 142 connected to the air guide pipe is fixedly installed on the negative pressure filter box 14. An exhaust pipe 143 is connected through one side of the ventilation box 142. Furthermore, a ventilation pipe 144 connected to the air inlet pipe 61 is connected through the ventilation box 142. A sealing plate 145 for blocking the exhaust pipe 143 or the ventilation pipe 144 is rotatably connected inside the ventilation box 142. A motor 146 for driving the sealing plate 145 to rotate is fixedly installed on the ventilation box 142. In use, the sealing plate 145 is rotated by the motor 146 to block the ventilation pipe 144, and the negative pressure pump 141 is controlled to work, drawing the air out of the negative pressure filter box 14, so that a negative pressure is formed inside the negative pressure filter box 14. Thus, the smoke generated by cutting can be drawn into the negative pressure filter box 14 through the air extraction pipe 13, filtered, and then discharged. The connecting pipe fitting 64 includes a corrugated hose 641 fixedly connected to one end of the connecting pipe 62, and a connecting pipe 642 fixedly installed at the other end of the corrugated hose 641. A return spring 643 sleeved on the outside of the corrugated hose 641 is fixedly installed between the connecting pipe 62 and the connecting pipe 642. The connecting pipe fitting 66 includes a corrugated hose 661 fixedly connected to the other end of the connecting pipe 642. The other end of the corrugated hose 661 is fixedly connected to a connecting bend 662. A return spring 663 sleeved on the outside of the corrugated hose 661 is fixedly installed between the connecting pipe 642 and the connecting bend 662. A sliding seat 23 is fixedly installed on the inner bottom wall of the liquid storage tank 2. Two inner sliding plates 231 are symmetrically and horizontally slidably connected to the sliding seat 23. Two outer sliding plates 232 are symmetrically and horizontally slidably connected to the sliding seat 23 and located outside the two inner sliding plates 231. The two inner sliding plates 231 are fixedly connected to two connecting pipes 642 respectively. The two outer sliding plates 232 are fixedly connected to two connecting bends 662 respectively. A drive assembly 7 is installed on the liquid storage tank 2 and is connected to both the two inner sliding plates 231 and the two outer sliding plates 232. It is used to make both the two inner sliding plates 231 and the two outer sliding plates 232 slide on the sliding seat 23. The extension direction of the vent hole is parallel to the axial direction of the outer connecting pipe 67. The axial direction of the outer connecting pipe 67 is perpendicular to the sliding direction of the inner sliding plates 231 and the outer sliding plates 232 on the sliding seat 23. The drive assembly 7 includes a horizontally oriented shaft 71 rotatably mounted on the liquid storage tank 2. One end of the shaft 71 extends into the liquid storage tank 2. A first winding roller 72 and a second winding roller 73 are coaxially fixed to the end of the shaft 71 extending into the liquid storage tank 2. Two pull ropes 74 are wound on the first winding roller 72, and the other ends of the two pull ropes 74 are respectively fixed to two inner sliding plates 231. Two pull ropes 75 are wound on the second winding roller 73, and the other ends of the two pull ropes 75 are respectively fixed to two outer sliding plates 232. A drive component 76 for driving the shaft 71 to reciprocate is installed on the liquid storage tank 2. Specifically, the drive component 76 includes a transmission component installed on the liquid storage tank 2 and a second motor fixedly installed on the liquid storage tank 2. One end of the transmission component is connected to the shaft 71, and the other end is connected to the output shaft of the second motor. The transmission component adopts a crank-rocker structure.

[0044] During use, the peristaltic pump 42 is controlled by the controller to deliver cutting fluid stock solution into the storage tank 2. Simultaneously, the motor 146 is controlled to rotate the sealing plate 145 to block the exhaust pipe 143. At this time, the vent pipe 144 is connected to the vent box 142. When the negative pressure pump 141 works to draw air out of the negative pressure filter box 14, the air can be delivered to the air inlet pipe 61 through the vent pipe 144, achieving the effect of injecting air into the air inlet pipe 61. There is no need to add an independent air supply device, reducing equipment costs. When the concentration of cutting fluid mixture in the storage tank 2 is within the cutting fluid concentration ratio threshold range preset in the PLC control system, the motor 146 is controlled by the controller to rotate the sealing plate 145 to block the vent pipe 144.

[0045] Through the design of the sliding seat 23, inner sliding plate 231, outer sliding plate 232, and drive assembly 7, when the peristaltic pump 42 is controlled by the controller to deliver cutting fluid stock solution to the reservoir 2, the controller synchronously controls the second motor to work. The output shaft of the second motor rotates and drives the rotating shaft 71 to reciprocate through the crank rocker structure, thereby driving the first winding roller 72 and the second winding roller 73 to reciprocate synchronously, continuously winding and unwinding the two pull ropes 74 and 75. During this process, when the two pull ropes 74 and 75 are wound, the two inner sliding plates 231 slide closer to each other on the sliding seat 23, and the two outer sliding plates 232 slide closer to each other on the sliding seat 23. This causes the two inner connecting pipes 65 to move closer to each other through the two connecting pipes 642, and the two outer connecting pipes 67 to move closer to each other through the two connecting bends 662. The corrugated hose 641, return spring 643, corrugated hose 661, and return spring 7 are all connected to the second motor. Both spring 663 deforms, and when the two pull ropes 74 and 75 are unfolded, the return springs 643 and 663 return to their natural state. This drives the inner slide plate 231 and the outer slide plate 232 to slide and reset along the sliding seat 23 through the connecting pipe 642 and the connecting bend 662, thereby resetting the inner connecting pipe 65 and the outer connecting pipe 67. This achieves the effect of moving the two inner connecting pipes 65 and the two outer connecting pipes 67 horizontally to reset, and simultaneously moves the exhaust square pipes 68 on the inner connecting pipes 65 and the outer connecting pipes 67 horizontally to reset. This allows the solution to be disturbed from multiple positions from the middle of the storage tank 2 to the side of the tank, promoting solution flow, accelerating the overall mixing speed of the solution, improving the overall mixing efficiency of the solution, and further preventing the cutting fluid discharged through the drain pipe 84 and the original cutting fluid injected into the storage tank 2 from accumulating below the pipe opening, causing local uneven concentration. Furthermore, by utilizing the special design of staggered arrangement of the exhaust square pipes 68 on the inner connecting pipe 65 and the exhaust square pipes 68 on the outer connecting pipe 67, the multiple exhaust square pipes 68 on the inner connecting pipe 65 are displaced. When the liquid flows to both sides through the exhaust square pipes 68, the liquid flowing to both sides of the exhaust square pipes 68 comes into contact with the exhaust square pipes 68 on the outer connecting pipe 67. This allows multiple intersecting liquid flows to be formed in the liquid storage tank 2, which is beneficial for the mutual mixing of liquids in different areas and further improves the mixing uniformity of the cutting fluid.

[0046] The remaining structure is the same as that in Example 1.

[0047] Example 3, referring to Figures 1-12 This is the third embodiment of the present invention, which differs from the second embodiment in that: The first winding roller 72 has two winding grooves 721, and the ends of the two pull ropes 74 are respectively wound into the two winding grooves 721. The second winding roller 73 has two winding grooves 731, and the ends of the two pull ropes 75 are respectively wound into the two winding grooves 731. The inner diameter of the first winding groove 721 is smaller than the inner diameter of the second winding groove 731. The liquid storage tank 2 is equipped with a cleaning component 9 for cleaning the inner wall of the filter cylinder 83. The cleaning component 91 is horizontally oriented and rotatably installed in the filter shell 81. The outer wall of the cleaning brush 91 is in contact with the inner wall of the filter cylinder 83. A reduction motor 92 for driving the cleaning brush 91 to rotate is fixedly installed on the liquid storage tank 2.

[0048] During use, the special design of the inner diameter of the first winding groove 721 being smaller than that of the second winding groove 731 allows the rotating shaft 71 to reciprocate and continuously wind and unwind the two pull ropes 74 and 75. This results in the two outer sliding plates 232 sliding on the sliding seat 23 at a greater speed than the two inner sliding plates 231 sliding on the sliding seat 23. Consequently, the outer connecting pipe 67 has a greater displacement speed than the inner connecting pipe 65. When mixing the liquid in the storage tank 2, this accelerates the flow disturbance of the solution in the edge area of ​​the storage tank 2, thereby helping to reduce the phenomenon of solution stagnation and local concentration stratification at the corners of the storage tank 2. Furthermore, the different sliding speeds inside and outside create a speed difference, constructing a gradient solution flow field inside the storage tank 2. This promotes mutual convection and exchange between the solution at the edge and the center of the storage tank 2, improving the overall solution mixing uniformity and further enhancing the mixing effect. This effectively avoids problems such as wire breakage, deterioration of the processed surface quality, and unstable discharge caused by fluctuations in the cutting fluid concentration during wire cutting, ensuring the cutting quality of the workpiece.

[0049] By setting up the cleaning component 9, when the cutting fluid level in the storage tank 2 drops below the low water level monitoring probe 212 due to usage loss, the controller controls the solenoid valve 33 to open and replenish the storage tank 2 with clean water. Simultaneously, the controller controls the solenoid valve 86 to close and the solenoid valve 87 to open, and then controls the geared motor 92 to drive the cleaning brush 91 to rotate, sweeping and cleaning the dust adhering to the inner wall of the filter cartridge 83. The dust is then discharged through the waste liquid pipe 85 along with the liquid flowing into the filter shell 81, achieving the cleaning effect of the dust remaining in the filter cartridge 83. When the cutting fluid level in the storage tank 2 rises to the high water level monitoring probe 211 after continuous replenishment with clean water, the controller controls the geared motor 92 to close, and controls the solenoid valve 86 to open and the solenoid valve 87 to close. This effectively avoids the waste of cutting fluid concentrate caused by the discharge through the waste liquid pipe 85 after subsequent replenishment.

[0050] The remaining structure is the same as that in Example 2.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wire cutting machine tool with automatic water and liquid adding function, characterized in that: Includes an electrical discharge machining unit, an automatic liquid replenishment unit, and a controller; The electric spark cutting machine unit includes a bed, a liquid supply pipe, a liquid outlet pipe and an air extraction pipe installed on the bed, and a negative pressure filter box installed on one side of the bed and connected to the air extraction pipe. The automatic fluid replenishment unit includes a storage tank, and an automatic water replenishment component, an automatic cutting fluid replenishment component, a mixed solution concentration detection component, and a solution mixing component installed on the storage tank; The storage tank is equipped with a water level monitoring component, which is used to monitor the liquid level of the solution in the storage tank, and a liquid supply pump connected to the liquid supply pipe is fixedly installed on the storage tank. The automatic water replenishment component is used to replenish the water in the storage tank, the automatic cutting fluid replenishment component is used to replenish the cutting fluid in the storage tank, and the solution mixing component is used to mix the water and cutting fluid in the storage tank to form a cutting fluid mixture. The mixture concentration detection component is used to detect the concentration of the cutting fluid mixture after mixing in the storage tank; The automatic water purification fluid replenishment component, the automatic cutting fluid replenishment component, the mixed solution concentration detection component, and the solution mixing component are all communicatively connected to the controller. The solution mixing component includes an air inlet pipe fixedly installed on the liquid storage tank and extending into it. An air outlet pipe unit connected to the bottom of the air inlet pipe is installed inside the liquid storage tank. The outlet pipe unit includes a connecting pipe, a middle connecting pipe, a first connecting pipe, an inner connecting pipe, a second connecting pipe, and an outer connecting pipe. The connecting pipe is connected to the bottom of the intake pipe. A horizontal middle connecting pipe is connected through one side of the connecting pipe, and connecting pipe fittings are symmetrically connected to both ends of the connecting pipe. A horizontal inner connecting pipe is fixedly installed on one side of the connecting pipe fitting. A second connecting pipe is installed at the ends of the two connecting pipe fittings that are far apart from each other. A horizontal outer connecting pipe is fixedly installed at the ends of the two connecting pipe fittings that are far apart from each other. The axes of the outer connecting pipe, inner connecting pipe and middle connecting pipe are parallel. Multiple exhaust square pipes are connected through the top of the outer connecting pipe, inner connecting pipe and middle connecting pipe. Exhaust holes are opened on both sides of the exhaust square pipe and communicate with its interior. A one-way valve is fixedly installed in the exhaust hole of the exhaust square pipe.

2. The wire cutting machine tool with automatic water and liquid addition function according to claim 1, characterized in that: The water level monitoring component includes a high water level monitoring probe and a low water level monitoring probe. The top of one side of the liquid storage tank has an upper mounting hole that communicates with its interior, and the bottom of one side has a lower mounting hole that communicates with its interior. The high water level monitoring probe is fixedly installed in the upper mounting hole, and the low water level monitoring probe is fixedly installed in the lower mounting hole. The mixture concentration detection component includes a concentration monitoring and analysis instrument fixedly installed on one side of the storage tank, and a concentration detection probe fixedly installed in the middle of the inner wall of the storage tank. The concentration detection probe is communicatively connected to the concentration monitoring and analysis instrument.

3. The wire cutting machine tool with automatic water and liquid addition function according to claim 2, characterized in that: The automatic water replenishment component includes a water replenishment pipe fixedly installed on the top of the storage tank, and a water passage pipe fixedly installed on the storage tank and connected to the water replenishment pipe. A solenoid valve and a flow meter are fixedly installed on the water passage pipe, and the other end of the water passage pipe is connected to the top of the storage tank. The automatic cutting fluid replenishment component includes a storage tank located on one side of the storage tank, which is used to store the original cutting fluid. A peristaltic pump is fixedly installed on the top of the storage tank. A connecting pipe 1 extending into the storage tank is fixedly installed at the inlet end of the peristaltic pump, and a connecting pipe 2 is fixedly installed at the outlet end. The other end of the connecting pipe 2 is connected to the top of the storage tank.

4. The wire cutting machine tool with automatic water and liquid addition function according to claim 3, characterized in that: A negative pressure pump is fixedly installed on the negative pressure filter box. The air inlet of the negative pressure pump is connected to the inside of the negative pressure filter box through a connecting pipe three, and an air guide pipe is fixedly installed on the air outlet. A venting box connected to the air guide pipe is fixedly installed on the negative pressure filter box. An exhaust pipe is connected through one side of the venting box, and a venting pipe connected through the venting box is connected to the air inlet pipe. A sealing plate for sealing the exhaust pipe or venting pipe is rotatably connected inside the venting box. A motor for driving the sealing plate to rotate is fixedly installed on the venting box.

5. The wire cutting machine tool with automatic water and liquid addition function according to claim 4, characterized in that: The connecting pipe fitting includes a corrugated hose fixedly connected to one end of the connecting pipe, a connecting pipe fixedly installed at the other end of the corrugated hose, and a return spring sleeved on the outside of the corrugated hose fixedly installed between the connecting pipe and the connecting pipe. The second connecting pipe includes a second corrugated hose fixedly connected to the other end of the connecting pipe, and a connecting bend fixedly connected to the other end of the second corrugated hose. A second return spring sleeved on the outside of the second corrugated hose is fixedly installed between the connecting pipe and the connecting bend. A sliding seat is fixedly installed on the inner bottom wall of the liquid storage tank. Two inner sliding plates are symmetrically and horizontally slidably connected to the sliding seat. Two outer sliding plates are symmetrically and horizontally slidably connected to the sliding seat outside the two inner sliding plates. The two inner sliding plates are fixedly connected to two connecting pipes respectively. The two outer sliding plates are fixedly connected to two connecting bends respectively. A drive assembly is installed on the liquid storage tank and is connected to both the two inner sliding plates and the two outer sliding plates. It is used to make the two inner sliding plates and the two outer sliding plates slide on the sliding seat.

6. The wire cutting machine tool with automatic water and liquid addition function according to claim 5, characterized in that: The drive assembly includes a horizontally oriented shaft rotatably mounted on a liquid storage tank. One end of the shaft extends into the liquid storage tank, and a first winding roller and a second winding roller are coaxially fixed to the end of the shaft extending into the liquid storage tank. Two first pull ropes are wound on the first winding roller, and the other ends of the two first pull ropes are respectively fixed to two inner sliding plates. Two second pull ropes are wound on the second winding roller, and the other ends of the two second pull ropes are respectively fixed to two outer sliding plates. A drive component for driving the shaft to reciprocate is installed on the liquid storage tank.

7. The wire cutting machine tool with automatic water and liquid addition function according to claim 6, characterized in that: The first winding roller has two winding grooves, and the ends of the two pull ropes are wound into the two winding grooves respectively. The second winding roller has two winding grooves, and the ends of the two pull ropes are wound into the two winding grooves respectively. The inner diameter of the first winding groove is smaller than the inner diameter of the second winding groove.

8. The wire cutting machine tool with automatic water and liquid addition function according to claim 7, characterized in that: The liquid storage tank is equipped with a liquid filtration assembly connected to the liquid outlet pipe, and the liquid outlet end of the liquid filtration assembly is connected to the inside of the liquid storage tank. The liquid filtration assembly includes a filter housing fixedly installed on the top of the storage tank, an outlet pipe end connected to the top of the filter housing, a fixing ring fixedly installed on the inner wall of the filter housing and on one side of the outlet pipe, a filter cylinder fixedly installed inside the fixing ring, the other end of the filter cylinder abutting against the inner wall of the filter housing, a drain pipe connected to the bottom of the filter housing and below the filter cylinder, a waste liquid pipe connected to the end of the filter housing and communicating with the inside of the filter cylinder, a second solenoid valve fixedly installed on the drain pipe, and a third solenoid valve fixedly installed on the waste liquid pipe.

9. The wire cutting machine tool with automatic water and liquid addition function according to claim 8, characterized in that: The liquid storage tank is equipped with a cleaning component for cleaning the inner wall of the filter cartridge. The component includes a cleaning brush that is horizontally oriented and rotatably installed inside the filter housing. The outer wall of the cleaning brush is in contact with the inner wall of the filter cartridge. A geared motor for driving the cleaning brush to rotate is fixedly installed on the liquid storage tank.

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