A slow wire EDM machine for steel sheets
By introducing a filtration system consisting of filter cartridges, transfer tubes, ball tanks, and activated carbon into the wire EDM machine, the problem of incomplete chip separation was solved, achieving efficient filtration and cleaning of the working fluid and ensuring stable operation of the machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN CHANGXUN PRECISE ELECTRONIC CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-05-26
AI Technical Summary
Existing wire EDM machines cannot efficiently separate and easily clean debris from the working fluid, resulting in the inability of the device to operate stably for extended periods.
A filtration system comprising a filter cartridge, a transfer tube, a spherical tank, and activated carbon was designed. The filter screen traps debris of different sizes, the activated carbon adsorbs fine debris, and a negative pressure is created by the suction pipe to allow the working fluid to flow smoothly. Combined with a liquid pump, the debris and liquid are separated and cleaned.
It achieves multiple filtrations and adsorptions of debris in the working fluid, ensuring effective separation of debris from the liquid, facilitating easy disassembly and cleaning, and ensuring stable operation of the device over a long period of time.
Smart Images
Figure CN224273601U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slow wire EDM machine tool technology, specifically a slow wire EDM machine tool for steel sheets. Background Technology
[0002] A slow wire EDM machine is a high-precision electrical discharge wire cutting machine, mainly used for cutting conductive materials, such as metal mobile phone steel sheets. The "slow wire EDM" in its name refers to the fact that the electrode wire moves at a low speed, usually a few meters per second in one direction, in contrast to a "fast wire EDM machine".
[0003] Existing wire EDM machines require a working fluid for cooling, insulation, and flushing away debris during operation. This working fluid is typically deionized water or oil-based. After separation from the steel sheet, the working fluid contains a large amount of debris. Existing wire EDM machines cannot efficiently separate this debris from the working fluid, nor can they easily clean up the trapped debris. Therefore, a new wire EDM machine needs to be designed to address these issues. Utility Model Content
[0004] The purpose of this utility model is to provide a slow wire EDM machine for steel sheets to solve at least one technical problem existing in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A slow wire EDM machine for steel sheets, comprising:
[0007] The machine tool body has a working fluid discharge pipe installed on one side. The end of the working fluid discharge pipe is connected to one side of the filter cartridge, and the other end of the filter cartridge is connected to one end of the transfer pipe. The horizontal part of the transfer pipe is connected to one side of the middle of the spherical tank.
[0008] The transfer tube has its bottom outer wall connected and fixed to the top of the inner wall of the separator cylinder, and its bottom end connected and fixed to the bottom of the inner wall of the spherical tank. A bottom discharge pipe is installed at the bottom of the spherical tank. The top of the vertical part of the transfer tube passes through the middle of the flattening net. The flattening net is fixedly installed inside the spherical tank. Activated carbon is placed inside the spherical tank below the flattening net.
[0009] A spherical tank, wherein a safety plate is fixed to the upper part of the inner wall of the spherical tank, an air extraction pipe is installed on the top of the spherical tank, a top blocking net is fixed to the bottom end of the air extraction pipe, and an extraction pipe is fixed to the other side of the middle of the spherical tank, and a liquid extraction pump is installed on the extraction pipe.
[0010] Preferably, a filter screen is fixedly installed inside the filter cartridge. The filter screen is evenly spaced, and the mesh diameter of the filter screen decreases sequentially towards the spherical tank.
[0011] Preferably, the transfer tube has an "L" shape when viewed from the front, and the center of the vertical part of the transfer tube is on the same vertical line as the center of the spherical tank.
[0012] Preferably, the bottom of the vertical portion of the transfer tube is higher than the horizontal center of the separator cylinder, and the diameter of the mesh on the separator cylinder is smaller than the diameter of the activated carbon.
[0013] Preferably, the safety plate is alternately arranged on both sides of the upper inner wall of the spherical tank, the shape of the safety plate when viewed from below is semi-circular, and the vertical surface of the end of the safety plate coincides with the vertical surface of the center of the spherical tank.
[0014] Preferably, the diameter of the extraction pipe and the top blocking net is larger than the diameter of the transfer pipe, and the distance between the top blocking net and the top surface of the topmost safety plate is greater than the vertical spacing of the staggered safety plates.
[0015] Preferably, a bottom blocking mesh is fixed at the bottom end of the extraction tube, and the bottom surface of the bottom blocking mesh is in contact with the top surface of the flat mesh.
[0016] Preferably, the extraction tube has an "L" shape when viewed from the front, and the diameter of the extraction tube is not less than the diameter of the transfer tube.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] The novel structural design enables multiple filtrations and adsorptions of debris in the working fluid, ensuring effective separation of debris from the working fluid. Furthermore, the filtration and adsorption processes are easily disassembled, cleaned, and cleared, allowing the entire device to stably process the working fluid over a long period of time.
[0019] 1. This utility model uses filter screens with equal spacing inside the filter cartridge to trap debris of different sizes, avoiding debris from clogging the filter structure in a single location, and uses activated carbon to adsorb fine debris, ensuring the separation effect of debris;
[0020] 2. This utility model draws air from the spherical tank through the suction pipe to create negative pressure, allowing the working fluid to flow smoothly through the working fluid discharge pipe, filter cartridge, and transfer pipe into the activated carbon inside the spherical tank under the action of air pressure. The safety plate prevents the working fluid from entering the suction pipe due to excessive negative pressure, ensuring that the entire device can work stably for a long time. Attached Figure Description
[0021] Figure 1 This is a front view structural diagram of the present utility model.
[0022] Figure 2 This is a front view cross-sectional structural diagram of the filter cartridge and spherical tank of this utility model.
[0023] Figure 3This is a top view schematic diagram of the structure of the separator mesh cylinder and activated carbon paving of this utility model.
[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the middle part of the spherical tank of this utility model, viewed from below.
[0025] In the diagram: 1. Machine tool body; 2. Working fluid discharge pipe; 3. Filter cartridge; 4. Filter screen; 5. Transfer pipe; 6. Spherical tank; 7. Separating screen cylinder; 8. Bottom discharge pipe; 9. Leveling screen; 10. Activated carbon; 11. Safety plate; 12. Air extraction pipe; 13. Top blocking screen; 14. Extraction pipe; 15. Bottom blocking screen; 16. Liquid pump. Detailed Implementation
[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figure 1-4 One embodiment provided by this utility model:
[0031] A slow wire EDM machine for steel sheets, comprising:
[0032] The machine tool body 1 has a working fluid discharge pipe 2 installed on one side. The end of the working fluid discharge pipe 2 is connected to one side of the filter cartridge 3, and the other end of the filter cartridge 3 is connected to one end of the transfer pipe 5. The horizontal part of the transfer pipe 5 is connected to one side of the middle of the spherical tank 6. A filter screen 4 is fixedly installed inside the filter cartridge 3. The filter screen 4 is evenly distributed, and the mesh diameter of the filter screen 4 decreases sequentially from the direction closer to the spherical tank 6. The above structural design can effectively intercept debris of different diameters and avoid debris from remaining in the same filter structure, reducing the probability of blockage. The front view shape of the transfer pipe 5 is "L" shaped. The center of the vertical part of the transfer pipe 5 is on the same vertical line as the center of the spherical tank 6. The above structural design allows the working fluid to be discharged into the middle of the activated carbon 10 through the bottom of the transfer pipe 5, ensuring that the working fluid can be evenly dispersed and contacted with the activated carbon 10.
[0033] The transfer tube 5 has its bottom outer wall connected and fixed to the top of the inner wall of the separator screen 7. The bottom of the separator screen 7 is connected and fixed to the bottom of the inner wall of the spherical tank 6. The bottom of the vertical part of the transfer tube 5 is higher than the horizontal center of the separator screen 7. The diameter of the mesh on the separator screen 7 is smaller than the diameter of the activated carbon 10. The above structural design can ensure the smooth flow of the working fluid and prevent the activated carbon 10 from entering the inner side of the separator screen 7. The bottom discharge pipe 8 is installed at the bottom of the spherical tank 6. The top of the vertical part of the transfer tube 5 passes through the middle of the flattening net 9. The flattening net 9 is fixedly installed inside the spherical tank 6. Activated carbon 10 is placed inside the spherical tank 6 below the flattening net 9.
[0034] The spherical tank 6 has a safety plate 11 fixed on the upper part of its inner wall, an air extraction pipe 12 installed on the top of the spherical tank 6, a top blocking net 13 fixed at the bottom of the air extraction pipe 12, and an extraction pipe 14 fixed on the other side of the middle of the spherical tank 6. A liquid extraction pump 16 is installed on the extraction pipe 14.
[0035] In one embodiment, the safety plate 11 is alternately arranged on both sides of the upper inner wall of the spherical tank 6. The shape of the safety plate 11 when viewed from below is semi-circular. The vertical surface of the end of the safety plate 11 coincides with the vertical surface of the center of the spherical tank 6. The above structural design can prevent the working fluid from moving upward into the suction pipe 12 when the negative pressure is too large.
[0036] In one preferred embodiment, the diameter of the suction pipe 12 and the top blocking net 13 is greater than the diameter of the transfer pipe 5, and the distance between the top blocking net 13 and the top surface of the topmost safety plate 11 is greater than the vertical spacing of the staggered safety plates 11. The above structural design ensures that the suction efficiency of the suction pipe 12 is high, thereby ensuring that the negative pressure inside the spherical tank 6 is sufficient.
[0037] In one embodiment, a bottom blocking net 15 is fixed to the bottom end of the extraction tube 14, and the bottom surface of the bottom blocking net 15 is attached to the top surface of the flat net 9. The above structural design can prevent the activated carbon 10 from entering the extraction tube 14 and ensure the suction effect of the extraction tube 14 on the working fluid passing through the activated carbon 10.
[0038] In one preferred embodiment, the extraction tube 14 has an "L" shape when viewed from the front, and the diameter of the extraction tube 14 is not less than the diameter of the transfer tube 5. The above structural design enables the extraction tube 14 to smoothly transfer the working fluid that has been adsorbed by the activated carbon 10 to fine debris.
[0039] The working principle of this utility model is as follows: During operation, the air in the ball tank 6 is extracted by the vacuum equipment connected to the air extraction pipe 12. At this time, the valve on the bottom discharge pipe 8 and the liquid pump 16 are closed, and a negative pressure is formed in the ball tank 6. The air pressure extracts the working fluid carrying debris from the machine tool body 1. The working fluid enters the filter cartridge 3 through the working fluid discharge pipe 2. Larger diameter debris is intercepted by the filter screens 4 that are evenly distributed.
[0040] The working fluid is then discharged through the bottom of the transfer tube 5, passes through the separator screen 7 and comes into contact with the activated carbon 10. The activated carbon 10 adsorbs the fine debris in the working fluid. The working fluid then accumulates in the activated carbon 10 and the liquid level rises until the working fluid level comes into contact with the bottom baffle screen 15. The pump 16 is then started, and the filtered working fluid is extracted through the extraction tube 14 and transported back to the machine tool body 1 to participate in production.
[0041] When cleaning is required, the two ends of the filter cartridge 3 can be disassembled from the working liquid discharge pipe 2 and the transfer pipe 5 respectively. The filter screen 4 inside the filter cartridge 3 can be cleaned, and the cleaning liquid and clean water can be injected through the transfer pipe 5 to soak and clean the activated carbon 10. The bottom discharge pipe 8 can be opened to discharge the sewage. The filter cartridge 3 can be reinstalled and the whole device can work again.
[0042] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A slow wire EDM machine for steel sheets, characterized in that, It includes: The machine tool body (1) has a working fluid discharge pipe (2) installed on one side. The end of the working fluid discharge pipe (2) is connected to one side of the filter cartridge (3). The other end of the filter cartridge (3) is connected to one end of the transfer pipe (5). The horizontal part of the transfer pipe (5) is connected to one side of the middle of the spherical tank (6). The transfer tube (5) has its bottom outer wall connected and fixed to the top of the inner wall of the separator cylinder (7), and its bottom end is connected and fixed to the bottom of the inner wall of the spherical tank (6). The bottom end of the spherical tank (6) is equipped with a bottom discharge pipe (8). The top of the vertical part of the transfer tube (5) passes through the middle of the flattening net (9). The flattening net (9) is fixedly installed inside the spherical tank (6). Activated carbon (10) is provided inside the spherical tank (6) below the flattening net (9). A spherical tank (6) has a safety plate (11) fixed on the upper part of its inner wall. A suction pipe (12) is installed on the top of the spherical tank (6). A top blocking net (13) is fixed at the bottom of the suction pipe (12). A extraction pipe (14) is fixed on the other side of the middle of the spherical tank (6). A liquid pump (16) is installed on the extraction pipe (14).
2. The slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: A filter screen (4) is fixedly installed inside the filter cylinder (3). The filter screen (4) is evenly spaced, and the mesh diameter of the filter screen (4) decreases sequentially in the direction closer to the spherical tank (6).
3. The slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: The transfer tube (5) has an "L" shape when viewed from the front, and the center of the vertical part of the transfer tube (5) is on the same vertical line as the center of the spherical tank (6).
4. The slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: The bottom of the vertical part of the transfer tube (5) is higher than the horizontal center of the separator cylinder (7), and the diameter of the mesh on the separator cylinder (7) is smaller than the diameter of the activated carbon (10).
5. A slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: The safety plate (11) is alternately arranged on both sides of the upper inner wall of the spherical tank (6). The shape of the safety plate (11) when viewed from below is semi-circular, and the vertical surface of the end of the safety plate (11) coincides with the vertical surface of the center of the spherical tank (6).
6. The slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: The diameter of the extraction pipe (12) and the top blocking net (13) is greater than the diameter of the transfer pipe (5), and the distance between the top blocking net (13) and the top surface of the topmost safety plate (11) is greater than the vertical spacing of the staggered safety plates (11).
7. A slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: The bottom end of the extraction tube (14) is fixed with a bottom blocking net (15), and the bottom surface of the bottom blocking net (15) is in contact with the top surface of the flat net (9).
8. A slow wire EDM machine tool for steel sheets according to claim 1, characterized in that: The extraction tube (14) has an "L" shape when viewed from the front, and the diameter of the extraction tube (14) is not less than the diameter of the transfer tube (5).