Three-stage filtering system for mold plate grinding machining

Abstract

The invention relates to a three-stage filtering system for grinding a mold plate, which comprises a rack, a cooling tank is arranged on the rack, baffles are arranged on two opposite sides of the cooling tank, a filtering mechanism is arranged below the rack, and mounting grooves are formed in the opposite surfaces of the two baffles. A sponge block used for adsorbing cooling liquid and an extruding mechanism used for extruding the sponge block are arranged in the mounting groove, the filtering mechanism comprises a filtering box, a first partition plate is arranged in the filtering box, and a second partition plate is arranged on the first partition plate; a first filtering area and a second filtering area are defined by the opposite surfaces of the second partition plate, the inner side wall of the filtering box and the surface of the first partition plate, a third filtering area is defined by the lower surface of the first partition plate and the inner side wall of the filtering box, and the cooling pond communicates with the first filtering area through a liquid outlet pipe; a sewer pipe communicated with the second filtering area and the third filtering area is arranged on the first partition plate, a first filtering plate for filtering large impurities is arranged on the second partition plate, a second filtering plate for filtering medium impurities is arranged in the second filtering area, and a fine filtering assembly for filtering small impurities is arranged in the third filtering area. The cooling liquid spraying device has the effects of improving the cooling liquid spraying effect and reducing the waste of the cooling liquid.

Description

A three-stage filtration system for die plate grinding Technical Field

[0001] This application relates to the field of grinding equipment technology, and in particular to a three-stage filtration system for grinding mold plates. Background Technology

[0002] Grinding is a commonly used surface forming process in the mechanical manufacturing industry, and it is widely used in the processing of workpieces such as mold plates. It removes material through the relative motion between the grinding wheel and the workpiece. During the grinding process, the grinding wheel and the surface of the mold plate or workpiece will experience intense friction, generating a large amount of grinding heat instantaneously. Therefore, it is necessary to continuously spray coolant on the grinding area for cooling. In order to achieve the recycling of coolant, a filtration system is required to recover and filter the coolant.

[0003] The existing filtration system is mainly used in conjunction with grinding equipment. Its structure includes a frame, on which a cooling pool is installed to collect the coolant after spraying. To reduce coolant splash loss, baffles are installed on both sides of the cooling pool along the grinding direction of the grinding wheel. A filter box connected to the cooling pool is installed on the frame. Inside the filter box, a filter plate is installed to filter particulate impurities in the coolant. The output end of the filter box is connected to the spray system in the grinding equipment through a pipe. The working process is as follows: the coolant is sprayed by the spray system to the grinding contact area and then falls into the cooling pool. The baffles prevent coolant splashing. Subsequently, the coolant in the cooling pool flows into the filter box, is filtered by the filter plate, and is then transported back to the spray system, realizing the recycling of the coolant. However, existing filtration systems still have technical shortcomings in practical applications: First, although baffles are installed on both sides of the cooling pool, the coolant, when flung out by the high-speed rotating grinding wheel, has considerable kinetic energy and will splash again upon contact with the baffles, resulting in some coolant still escaping the cooling pool and being wasted. Second, existing filtration systems only perform single-pass filtration using a single filter plate, while the iron filings generated during grinding are of varying sizes, making it difficult to effectively remove these particles in a single pass. This results in a large amount of impurities remaining in the circulating coolant, reducing the spray cooling effect. In summary, existing grinding processes suffer from low cooling spray efficiency and coolant waste, indicating significant deficiencies. Summary of the Invention

[0004] In order to improve the cooling spray effect and reduce coolant waste, this application provides a three-stage filtration system for mold plate grinding.

[0005] This application provides a three-stage filtration system for mold plate grinding, comprising a frame, a cooling pool on the frame, baffles on opposite sides of the cooling pool, a filtration mechanism below the frame, mounting grooves on opposite surfaces of the baffles, a sponge block for absorbing coolant and a squeezing mechanism for squeezing the sponge block inside the mounting groove, and a filter box containing a filter box, a first partition inside the filter box, a second partition on the first partition, and so on. The opposing surfaces of the two partitions, together with the inner wall of the filter box and the surface of the first partition, form a first filtration zone and a second filtration zone. The lower surface of the first partition and the inner wall of the filter box form a third filtration zone. The cooling pool is connected to the first filtration zone through an outlet pipe. A drain pipe connecting the second filtration zone and the third filtration zone is provided on the first partition. A first filter plate for filtering large impurities is provided on the second partition. A second filter plate for filtering medium-sized impurities is provided inside the second filtration zone. A fine filter assembly for filtering small impurities is provided inside the third filtration zone.

[0006] By adopting the above technical solution, during filtration, part of the coolant falls directly into the cooling pool, while the other part is thrown out at high speed by the grinding wheel and comes into contact with the sponge block. At this time, the sponge block absorbs the coolant through its porous structure, reducing the possibility of secondary splashing due to the high-speed contact of the coolant with the baffle. Subsequently, the squeezing mechanism squeezes the sponge block to make the coolant fall into the cooling pool to participate in the subsequent filtration process, thus reducing the waste of coolant. The coolant accumulated in the cooling pool falls into the first filtration zone through the outlet pipe. The coolant flows from bottom to top in the first filtration zone, and after being filtered once by the first filter plate, it flows into the second filtration zone. The coolant is filtered a second time by the second filter plate as it flows from top to bottom in the second filtration zone, and finally flows into the third filtration zone through the drain pipe. The fine filter component in the third filtration zone performs three filtrations on the coolant, thus filtering out iron filings of different particle sizes mixed in with the coolant and improving the subsequent spraying effect of the coolant.

[0007] Optionally, the extrusion mechanism includes an extrusion plate slidably connected in the mounting groove. The extrusion plate has multiple extrusion protrusions on its surface facing the sponge block. A triggering component is provided in the mounting groove. When the sponge block is saturated with water, the triggering component drives the extrusion plate to extrude the sponge block.

[0008] By adopting the above technical solution, when the sponge block is saturated, the trigger component drives the extrusion plate to drive multiple extrusion protrusions to extrude the sponge block simultaneously, so that the coolant in the sponge block falls into the cooling pool. In this way, the sponge block changes from a saturated state to an unsaturated state, ensuring that the sponge block continues to absorb coolant.

[0009] Optionally, an elastic water-resistant membrane is provided on the inner sidewall of the mounting groove. The elastic water-resistant membrane is located between the extrusion plate and the sponge block, and the elastic water-resistant membrane is flat in its natural state.

[0010] By adopting the above technical solution, the setting of the elastic water-proof membrane avoids the coolant discharged by the sponge block being left in the gaps between the multiple extrusion protrusions. Moreover, the elastic water-proof membrane can stretch or contract synchronously with the reciprocating sliding of the extrusion plate, without hindering the deep extrusion action of the extrusion protrusions on the sponge block.

[0011] Optionally, the inner wall of the mounting groove is provided with a sliding groove, and the outer surface of the sponge block is provided with a mounting frame that is slidably connected in the sliding groove. The triggering component includes an elastic water bladder fixed to the bottom wall of the sliding groove. The elastic water bladder supports the bottom surface of the mounting frame. A slider is provided on the extrusion plate. An extrusion groove that is slidably connected to the slider is provided in the bottom wall of the mounting groove. The inner side wall of the extrusion groove and the slider are connected by a pushing water bag. The elastic water bladder and the pushing water bag are connected by multiple connecting pipes. When the sponge block is in an unsaturated state, the elastic water bladder is in a natural state, and the elastic water-resistant membrane is flat.

[0012] By adopting the above technical solution, when the sponge block absorbs coolant to the point of saturation, the supporting force of the elastic water bladder on the sponge block is less than the weight of the sponge block. The mounting frame squeezes the elastic water bladder, and the liquid stored inside the elastic water bladder is transported to the inside of the pushing water bag through the connecting pipe. This causes the pushing water bag to expand and push the slider towards the sponge block. The slider pushes the extrusion plate and extrusion protrusion to overcome the elastic force of the elastic water-proof membrane and squeeze the sponge block, squeezing out the coolant absorbed therein into the cooling pool. When the weight of the sponge block is reduced to less than the supporting force of the elastic water bladder, the elastic water bladder resets under its own elastic restoring force. At this time, the pushing force on the elastic water-proof membrane decreases and resets to a flat state. During the reset, the extrusion protrusion and extrusion plate are reset. The extrusion plate drives the slider to squeeze the pushing water bag, and the liquid in the pushing water bag flows back to the elastic water bladder through the connecting pipe. When the elastic water bladder resets, it pushes the sponge block to reset, thus ensuring the smooth operation of the next extrusion.

[0013] Optionally, a third partition is provided on the first partition. The opposing surfaces of the third partition and the inner wall of the third filtration zone enclose a processing zone and a fine filtration zone. An opening is provided on the third partition. The fine filtration assembly includes an unwinding roller and a winding roller rotatably connected in the processing zone. A soft magnetic tape is wound on the unwinding roller. The surface of the soft magnetic tape has multiple drainage holes. A first conveying roller is rotatably connected to the opening. A second conveying roller is rotatably connected to the end of the fine filtration zone away from the opening. The free end of the soft magnetic tape extends into the fine filtration zone through the surfaces of the first and second conveying rollers, passes around the second conveying roller, and exits from the bottom surface of the first conveying roller into the processing zone, and is finally placed on the winding roller. The opposing surfaces of the soft magnetic tape are attached to the inner wall of the fine filtration zone. A drive motor is provided on the outer surface of the filter box. The drive motor drives the unwinding roller or the winding roller to rotate through the switching assembly. A processing assembly for cleaning the soft magnetic tape is provided in the processing zone.

[0014] By adopting the above technical solution, the drive motor drives the take-up roller to rotate through the switching component. When the coolant enters the fine filtration zone, it first comes into contact with the soft magnetic tape. At this time, the soft magnetic tape adsorbs fine impurities in the coolant through magnetic attraction, achieving three-stage filtration of the coolant. As the take-up roller continues to rotate, it pulls the soft magnetic tape adsorbing impurities towards the take-up roller, allowing the unsaturated soft magnetic tape on the unwinding roller to move into the processing zone and pass under the drain pipe. This ensures that the coolant is always in contact with the unsaturated soft magnetic tape when entering the fine filtration zone. To ensure the soft magnetic tape's ability to attract fine iron filings, when the take-up roller moves the soft magnetic tape to the processing component in the processing area, the processing component removes the iron filings from the soft magnetic tape, thus keeping the soft magnetic tape in an unsaturated state before it is wound up on the take-up roller. When the soft magnetic tape can no longer be wound on the take-up roller, the drive motor drives the unwind roller to rotate through the switching component. At this time, the unwind roller takes on the winding work, and the take-up roller takes on the unwinding work. This achieves bidirectional recycling of the soft magnetic tape, ensuring the filtration effect without the need for frequent shutdowns for cleaning.

[0015] Optionally, the processing assembly includes a demagnetizing roller rotatably connected to the processing area. The demagnetizing roller is located on the side of the take-up roller away from the unwind roller. The demagnetizing roller passes through the soft magnetic tape and is fitted with multiple demagnetizing coils. The filter box is equipped with a power supply module for supplying power to the demagnetizing coils and a negative pressure pump. The suction end of the negative pressure pump is connected to a main air pipe, and the discharge end is connected to a chip collection box. Two branch air pipes are connected to the main air pipe. The two branch air pipes extend into the processing area and are located on both sides of the opposite surface of the soft magnetic tape. Multiple chip suction nozzles are connected to the branch air pipes, and the chip suction direction of the chip suction nozzles is oriented towards the soft magnetic tape.

[0016] By adopting the above technical solution, during filtration, the power supply module energizes the demagnetizing coil, generating a local alternating magnetic field opposite to the magnetic direction of the soft magnetic tape. The area of ​​the soft magnetic tape close to the demagnetizing roller is rapidly demagnetized, reducing the magnetic tape's ability to attract iron filings. The soft magnetic tape located inside the fine filtration zone retains its magnetism because it is too far from the demagnetizing roller. At the same time, the negative pressure pump starts, and the negative pressure is transmitted to multiple chip suction nozzles through the main air pipe and the branch air pipe, causing the chip suction nozzles to generate negative pressure suction force. The negative pressure suction force draws the iron filings on the surface of the soft magnetic tape into the chip collection box, thus achieving the collection of fine iron filings on the soft magnetic tape.

[0017] Optionally, the switching assembly includes a drive gear coaxially arranged with the output shaft of the drive motor. A first gear ring meshing with the drive gear is slidably sleeved at the end of the unwinding roller, and a second gear ring meshing with the drive gear is slidably sleeved at the end of the take-up roller. Magnetic guide blocks are provided on the inner circumferential surfaces of both the first and second gear rings. Guide grooves that slidably engage with the guide blocks are formed on the surfaces of the unwinding and take-up rollers. A first electromagnetic plate and a second electromagnetic plate, which attract and engage with the guide blocks, are provided on the inner sidewalls of the guide grooves. When the first electromagnetic plate attracts the guide block, the first gear ring or the second gear ring meshes with the drive gear; when the second electromagnetic plate attracts the guide block, the first gear ring or the second gear ring disengages from the drive gear.

[0018] By adopting the above technical solution, when the first electromagnetic plate is energized and the second electromagnetic plate is de-energized, the first electromagnetic plate attracts the guide block and moves along the guide groove. The guide block drives the corresponding first or second gear ring to move and mesh with the drive gear. At this time, the rotation of the drive motor will drive the take-up roller or unwind roller to rotate through the transmission action of the drive gear and the first or second gear ring. When the second electromagnetic plate is energized and the first electromagnetic plate is de-energized, the second electromagnetic plate attracts the guide block away from the first electromagnetic plate. At this time, the guide block drives the corresponding first or second gear ring to disengage from the drive gear. The torque transmission of the drive motor cannot be transmitted to the take-up roller or unwind roller, thus realizing the power cut-off of the drive motor.

[0019] In summary, this application includes at least one of the following beneficial technical effects: By setting up a sponge block and a squeezing mechanism, the coolant is thrown out at high speed by the grinding wheel and comes into contact with the sponge block. At this time, the sponge block adsorbs the coolant through its porous structure, reducing the possibility of secondary splashing of the coolant due to high-speed contact with the baffle. Subsequently, the squeezing mechanism squeezes the sponge block, causing the coolant to fall into the cooling pool to participate in the subsequent filtration process, thus reducing coolant waste. By setting up a trigger component and an elastic water-resistant membrane, when the sponge block reaches saturation with coolant, the sponge block squeezes the elastic water bag under gravity. The elastic water bag pushes the water bag, causing the squeezing plate to squeeze the sponge block, causing the coolant in the sponge block to fall into the cooling pool. This changes the sponge block from a saturated state to an unsaturated state, ensuring the sponge block continues to adsorb coolant. By setting up a processing component, a switching component, and a fine filtration component, the three components work together to allow the soft magnetic tape to be recycled bidirectionally and always remain in an unsaturated state, ensuring the three-stage filtration effect of the filtration mechanism on the coolant. Attached Figure Description

[0020] Figure 1 is a schematic diagram of the structure of this application.

[0021] Figure 2 is a cross-sectional view of the baffle in an embodiment of this application.

[0022] Figure 3 is a schematic diagram of the structure of the filter box outer surface treatment component in an embodiment of this application.

[0023] Figure 4 is a cross-sectional view of the filter box in an embodiment of this application.

[0024] Figure 5 is a schematic diagram of the switching component in an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 01, Grinding mechanism; 02, Spraying mechanism; 1, Frame; 2, Cooling pool; 21, Liquid outlet pipe; 3, Filtration mechanism; 31, Filter box; 311, First partition; 312, Second partition; 313, First filtration zone; 314, Second filtration zone; 315, Third filtration zone; 3151, Fine filtration zone; 3152, Treatment zone; 32, Flow buffer plate; 33, First filter plate; 34, Second filter plate; 35, Drain pipe; 316, Third partition; 3161, Opening; 3162, Absorbent roller; 4, Baffle; 41, Mounting groove; 411, Sliding groove; 412, Extrusion groove; 42, Sponge block; 421, Mounting frame; 43, Elastic water-resistant membrane; 5, Extrusion mechanism; 51, Extrusion plate; 52. Extrusion protrusion; 53. Trigger assembly; 531. Elastic water bladder; 532. Slider; 533. Push water bag; 534. Connecting pipe; 6. Fine filtration assembly; 61. Unwinding roller; 62. Rewinding roller; 63. Soft magnetic tape; 631. Drain hole; 64. First conveying roller; 65. Second conveying roller; 7. Processing assembly; 71. Demagnetizing roller; 72. Demagnetizing coil; 73. Power supply module; 74. Negative pressure pump; 75. Main air pipe; 76. Chip collection box; 77. Air distribution pipe; 78. Chip suction nozzle; 8. Support frame; 81. Drive motor; 9. Switching assembly; 91. Drive gear; 92. First gear ring; 93. Second gear ring; 94. Guide block; 95. First electromagnetic plate; 96. Second electromagnetic plate; 10. Guide groove. Detailed Implementation

[0026] The present application will be further described in detail below with reference to Figures 1-5.

[0027] This application discloses a three-stage filtration system for grinding mold plates.

[0028] Referring to Figure 1, a three-stage filtration system for grinding mold plates includes a frame 1, on which a grinding mechanism 01 and a spraying mechanism 02 are mounted. Both the grinding mechanism 01 and the spraying mechanism 02 are existing technologies in grinding equipment and will not be described in detail in this embodiment.

[0029] Referring to Figure 1, a cooling pool 2 is installed on the frame 1. A liquid outlet pipe 21 is connected to the outer wall of the cooling pool 2 near the bottom. A filter mechanism 3 connected to the liquid outlet pipe 21 is installed at the bottom of the frame 1. The filter mechanism 3 can be connected to the coolant supply device through a return pipe (not shown in the figure), thus realizing the circulation of coolant.

[0030] Referring to Figures 1 and 2, baffles 4 are fixedly connected to both sides of the cooling pool 2 along the grinding direction of the grinding wheel. The opposing surfaces of the two baffles 4 are provided with mounting grooves 41. The mounting grooves 41 are inclined near the side wall of the cooling pool 2. Sponge blocks 42 for absorbing coolant are provided inside the mounting grooves 41. Each mounting groove 41 is provided with a squeezing mechanism 5. The squeezing mechanism 5 includes a squeezing plate 51 slidably connected in the mounting groove 41. Multiple squeezing protrusions 52 are fixedly connected to the surface of the squeezing plate 51 facing the sponge block 42. A triggering component 53 is provided inside the mounting groove 41. When the sponge block 42 is saturated, the triggering component 53 drives the squeezing plate 51 to squeeze the sponge block 42.

[0031] When the coolant is thrown out at high speed by the grinding wheel and comes into contact with the sponge block 42, the sponge block 42 absorbs the coolant through its porous structure, thereby reducing the possibility of secondary splashing of the coolant due to high-speed contact with the baffle 4. When the coolant collected in the sponge block 42 reaches a certain weight, the trigger component 53 drives the extrusion plate 51 to extrude the sponge block 42. At this time, the extrusion protrusion 52 will expel the coolant absorbed in the sponge block 42. The extruded coolant falls into the cooling pool 2 to participate in the subsequent filtration and purification process. In this way, the sponge block 42 is always in an unsaturated water-absorbing state, while reducing the waste of coolant caused by splashing.

[0032] Referring to Figures 1 and 2, an elastic water-resistant membrane 43 is fixedly connected to the side wall of the mounting groove 41 between the sponge block 42 and the extrusion plate 51. In this embodiment, the elastic water-resistant membrane 43 is a thin elastic membrane made of nitrile rubber, so as to prevent the coolant squeezed out by the sponge block 42 from remaining in the gaps between the multiple extrusion protrusions 52. The elastic water-resistant membrane 43 can stretch or contract synchronously with the reciprocating sliding of the extrusion plate 51, without hindering the deep extrusion action of the extrusion protrusions 52 on the sponge block 42.

[0033] Referring to Figures 1 and 2, the mounting groove 41 has sliding grooves 411 on opposite sides along the vertical direction. The outer surface of the sponge block 42 is fitted with a mounting frame 421 that is slidably connected to the sliding groove 411. The triggering component 53 includes an elastic water bladder 531 fixedly connected to the bottom wall of the sliding groove 411. The elastic water bladder 531 is filled with liquid and its top supports the bottom surface of the mounting frame 421. The bottom of the extrusion plate 51 is fixedly connected to a slider 532. The bottom wall of the mounting groove 41 has a sliding groove that slides with the slider 532. The compression groove 412 is connected, and a pushing water bag 533 is fixedly connected to the inner wall of the compression groove 412 away from the sponge block 42. The end of the pushing water bag 533 away from the compression groove 412 is fixedly connected to the slider 532. The elastic water bag 531 and the pushing water bag 533 are connected by multiple connecting pipes 534. When the sponge block 42 is in an unsaturated state, the elastic water bag 531 is in a natural state. At this time, the elastic water-proof membrane 43 is flat, and the compression protrusion 52 does not contact the sponge block 42.

[0034] When the sponge block 42 gradually reaches saturation due to the absorption of coolant, the supporting force of the elastic water bladder 531 on the sponge block 42 and the mounting frame 421 is less than the weight of the sponge block 42 and the mounting frame 421. The mounting frame 421 slides downward along the sliding groove 411 and squeezes the elastic water bladder 531. The liquid stored inside the elastic water bladder 531 is transported to the inside of the push water bag 533 through the connecting pipe 534, causing the push water bag 533 to expand and push the slider 532 toward the sponge block 42. The slider 532 then pulls the extrusion plate 51 and the extrusion protrusion 52 to move horizontally toward the sponge block 42, and overcomes the elasticity of the elastic water-resistant membrane 43 to squeeze the sponge. Block 42 squeezes out the adsorbed coolant into the cooling pool 2. As the coolant is discharged from the sponge block 42, the overall weight of the sponge block 42 is reduced, and the elastic water bag 531 resets under its own elastic restoring force. At this time, the pushing force on the elastic water-proof membrane 43 decreases and resets to a flat state. When resetting, it pushes the extrusion protrusion 52 and the extrusion plate 51 to reset. The extrusion plate 51 drives the slider 532 to extrude and push the water bag 533, pushing the liquid in the water bag 533 to flow back to the elastic water bag 531 through the connecting pipe 534. When the elastic water bag 531 resets, it pushes the sponge block 42 to reset, thus ensuring the smooth progress of the next extrusion operation.

[0035] Referring to Figures 3 and 4, the filtration mechanism 3 includes a filter box 31. A first partition 311 is fixedly connected inside the filter box 31. A second partition 312 is fixedly connected to the upper surface of the first partition 311. The opposing surfaces of the second partition 312, the inner wall of the filter box 31, and the first partition 311 enclose a first filtration zone 313 and a second filtration zone 314. The lower surface of the first partition 311 and the inner wall of the filter box 31 enclose a third filtration zone 315. The liquid outlet pipe 21 passes through the filter box 31 and communicates with the first filtration zone 313. The liquid return pipe communicates with the third filtration zone 315 and the spray system.

[0036] Referring to Figures 3 and 4, a flow-damping plate 32 is fixedly connected to the surface of the first partition 311 located in the first filtration zone 313. The opposite surface of the flow-damping plate 32 abuts against the inner wall of the first filtration zone 313. A first filter plate 33 for filtering large impurities is installed on the second partition 312. The height of the first filter plate 33 is lower than the height of the flow-damping plate 32. After the coolant enters the first filtration zone 313 through the outlet pipe 21, it flows upward in the first area defined by the flow-damping plate 32. When the liquid level rises to a position close to the top of the flow-damping plate 32, the coolant overflows from the top of the flow-damping plate 32 to the next area of ​​the first filtration zone 313. Then, driven by the liquid flow, it flows to the first filter plate 33. Since the height of the first filter plate 33 is lower than the height of the flow-damping plate 32, the coolant smoothly passes through the first filter plate 33 to complete the first stage of filtration. After removing large impurities from the coolant, it enters the second filtration zone 314.

[0037] Referring to Figures 3 and 4, a second filter plate 34 for filtering medium-sized impurities is installed inside the second filter zone 314. The second filter plate 34 is perpendicular to the first filter plate 33 and its installation height is lower than the bottom of the first filter plate 33. The first partition plate 311 is located on the surface of the second filter zone 314 and is connected to a drain pipe 35 that communicates with the third filter zone 315. The coolant enters the second filter zone 314 and flows downward. When passing through the second filter plate 34, the coolant undergoes secondary filtration, further intercepting the fine suspended impurities remaining in the coolant. The coolant after secondary filtration collects at the bottom of the second filter zone 314 and flows into the third filter zone 315 through the drain pipe 35.

[0038] Referring to Figures 3 and 4, the bottom of the first partition 311 is fixedly connected to the third partition 316 inside the third filtration zone 315. The outer sidewall of the third partition 316 and the inner sidewall of the third filtration zone 315 enclose the fine filtration zone 3151 and the processing zone 3152. An opening 3161 is provided on the third partition 316 to connect the processing zone 3152 and the fine filtration zone 3151. A fine filtration assembly 6 is provided inside the processing zone 3152 and the fine filtration zone 3151.

[0039] Referring to Figures 3 and 4, the fine filtration assembly 6 includes an unwinding roller 61 and a take-up roller 62 rotatably connected within the processing zone 3152. A soft magnetic tape 63 is wound onto the unwinding roller 61. The surface of the soft magnetic tape 63 has multiple drainage holes 631. A first conveying roller 64 is rotatably connected within the opening 3161. A second conveying roller 65 is rotatably connected to the side of the fine filtration zone 3151 away from the opening 3161. After the free end of the soft magnetic tape 63 is released from the unwinding roller 61, it first passes through the surface of the first conveying roller 64, then extends along the length of the fine filtration zone 3151 until it wraps around the second conveying roller 65, and finally is fixedly connected to the take-up roller 62 through the bottom surfaces of the second conveying roller 65 and the first conveying roller 64. The opposite outer walls of the soft magnetic tape 63 are tightly attached to the inner wall of the fine filtration zone 3151.

[0040] Referring to Figures 3 and 4, the processing area 3152 is equipped with a processing component 7 for processing iron filings adsorbed on the soft magnetic tape 63. A support frame 8 is fixedly installed on the outer surface of the filter box 31. A drive motor 81 is installed on the support frame 8. The output shaft of the drive motor 81 is connected to the unwinding roller 61 or the winding roller 62 through a switching component 9.

[0041] Initially, the drive motor 81 drives the take-up roller 62 to rotate via the switching component 9. When the coolant enters the fine filtration zone 3151 through the drain pipe 35, the coolant first comes into contact with the soft magnetic tape 63. At this time, the soft magnetic tape 63 adsorbs small ferromagnetic impurities in the coolant through magnetic attraction. Simultaneously, the coolant gathers inside the fine filtration zone 3151 through the drain hole 631 and finally flows back to the coolant supply mechanism through the return pipe. As the take-up roller 62 continues to rotate, it pulls the soft magnetic tape 63 to move within the fine filtration zone 3151 and the processing zone 3152. This causes the soft magnetic tape 63, which adsorbs impurities, to gradually move towards the take-up roller 62 in the processing zone 3152, allowing the unsaturated soft magnetic tape 63 on the unwind roller 61 to move into the processing zone 3152 and pass under the drain pipe 35. This ensures that the coolant is always in contact with the unsaturated soft magnetic tape 63 when entering the fine filtration zone 3151, ensuring that the soft magnetic tape 63 can effectively remove small iron filings. With its adsorption capacity, when the take-up roller 62 moves the soft magnetic tape 63 to the processing component 7 in the processing zone 3152, the processing component 7 causes the iron filings on the soft magnetic tape 63 to detach from the soft magnetic tape 63, thus making the soft magnetic tape 63 unsaturated before being wound up on the take-up roller 62. When the soft magnetic tape 63 can no longer be wound up on the take-up roller 62, the drive motor 81 drives the unwinding roller 61 to rotate through the switching component 9. At this time, the unwinding roller 61 undertakes the winding work, and the take-up roller 62 undertakes the unwinding work of the unsaturated soft magnetic tape 63. As the unwinding roller 61 rotates, the unsaturated soft magnetic tape 63 wound on the take-up roller 62 moves inside the fine filtration zone 3151 and the processing zone 3152. When passing through the fine filtration zone 3151, the coolant is filtered. After passing through the processing component 7, it is wound up on the unwinding roller 61. In this way, the soft magnetic tape 63 is reusable in both directions, and the filtration effect can be guaranteed without frequent shutdowns for cleaning of the soft magnetic tape 63.

[0042] Referring to Figures 3 and 4, the processing assembly 7 includes a demagnetizing roller 71 rotatably connected inside the processing zone 3152. The demagnetizing roller 71 is disposed between the unwinding roller 61 and the third partition 316 and passes through the soft magnetic tape 63. A demagnetizing coil 72 is sleeved on the outer surface of the demagnetizing roller 71. A power supply module 73 for energizing the demagnetizing coil 72 is installed on the outer surface of the filter box 31. A negative pressure pump 74 is installed on the outer surface of the filter box 31. The suction end of the negative pressure pump 74 is connected to a main air pipe 75, and the exhaust end is connected to a chip collection box 76. The chip collection box 76 has an air vent (not shown in the figure) that communicates with the atmosphere, and a metal filter screen (not shown in the figure) is installed at the air vent to intercept iron filings and prevent them from overflowing with the airflow. Two branch air pipes 77 are connected to the main air pipe 75. The two branch air pipes 77 are located inside the processing area 3152 and are located on the upper and lower sides of the demagnetizing roller 71, respectively. Each branch air pipe 77 has multiple chip suction nozzles 78 evenly installed along its length. The suction direction of the chip suction nozzles 78 is set towards the adsorption surface of the soft magnetic tape 63.

[0043] During filtration, the power supply module 73 energizes the demagnetizing coil 72, generating a local alternating magnetic field opposite to the magnetic direction of the soft magnetic tape 63. The area of ​​the soft magnetic tape 63 near the demagnetizing roller 71 is rapidly demagnetized, reducing the magnetic tape 63's ability to attract iron filings. The soft magnetic tape 63 located inside the fine filtration zone 3151 remains magnetic because it is too far from the demagnetizing roller 71. At the same time, the negative pressure pump 74 is activated, and the negative pressure is transmitted to multiple chip suction nozzles 78 through the main air pipe 75 and the branch air pipe 77, causing the chip suction nozzles 78 to generate negative pressure suction force. When the soft magnetic tape 63 with iron filings is moved to the demagnetizing roller 71, the magnetic properties of the soft magnetic tape 63 are greatly reduced. At this time, the negative pressure suction force draws the iron filings on the surface of the soft magnetic tape 63 into the chip collection box 76. In this way, the soft magnetic tape 63 remains unsaturated when it is wound on the unwinding roller 61 or the winding roller 62, thus cleaning the iron filings on the soft magnetic tape 63.

[0044] Referring to Figures 3 and 4, the third partition 316 is rotatably connected to a water-absorbing roller 3162 at the opening 3161. The water-absorbing roller 3162 abuts against the surface of the soft magnetic tape 63. When the soft magnetic tape 63 passes through the opening 3161, the water-absorbing roller 3162 absorbs and wipes the residual moisture on the surface of the soft magnetic tape 63, thereby reducing the possibility of the demagnetizing coil 72 being short-circuited due to water immersion and ensuring the smooth operation of the processing component 7.

[0045] Referring to Figures 3 and 5, the switching assembly 9 includes a drive gear 91 coaxially fixedly connected to the output shaft of the drive motor 81. The ends of the unwinding roller 61 and the take-up roller 62 both extend to the outside of the filter box 31. The end of the unwinding roller 61 is slidably fitted with a first gear ring 92 that meshes with the drive gear 91. The end of the take-up roller 62 is slidably fitted with a second gear ring 93 that meshes with the drive gear 91. The inner circumferential surfaces of the first gear ring 92 and the second gear ring 93 are both fixedly connected with guide blocks 94 made of magnetic material. The outer surfaces of the unwinding roller 61 and the take-up roller 62 are provided with guide grooves 10 that slide with the guide blocks 94. The inner sidewalls of the guide grooves 10 opposite to each other are fixedly installed with a first electromagnetic plate 95 and a second electromagnetic plate 96 that attract and cooperate with the guide blocks 94. When the first electromagnetic plate 95 attracts the guide block 94, the first gear ring 92 or the second gear ring 93 meshes with the drive gear 91. When the second electromagnetic plate 96 attracts the guide block 94, the first gear ring 92 or the second gear ring 93 disengages from the drive gear 91.

[0046] The worker can selectively energize the first electromagnetic plate 95 or the second electromagnetic plate 96 of the take-up roller 62 or the unwind roller 61. When the first electromagnetic plate 95 is energized and the second electromagnetic plate 96 is de-energized, the first electromagnetic plate 95 attracts the guide block 94 and moves along the guide groove 10. The guide block 94 drives the corresponding first gear ring 92 or second gear ring 93 to move and mesh with the drive gear 91. At this time, the drive motor 81 rotates and drives the take-up roller 62 or the unwind roller 61 to rotate through the transmission action of the drive gear 91 and the first gear ring 92 or the second gear ring 93. When the second electromagnetic plate 96 is energized and the first electromagnetic plate 95 is de-energized, the second electromagnetic plate 96 attracts the guide block 94 away from the first electromagnetic plate 95. At this time, the guide block 94 drives the corresponding first gear ring 92 or second gear ring 93 to disengage from the drive gear 91. The torque transmission of the drive motor 81 cannot be transmitted to the take-up roller 62 or the unwind roller 61, thus realizing the power cut-off of the drive motor 81.

[0047] The implementation principle of a three-stage filtration system for mold plate grinding in this application embodiment is as follows: During filtration, part of the coolant falls directly into the cooling pool 2, while the other part is thrown out at high speed by the grinding wheel and comes into contact with the sponge block 42. At this time, the sponge block 42 absorbs the coolant through its porous structure, reducing the possibility of secondary splashing due to the high-speed contact of the coolant with the baffle 4. Subsequently, the squeezing mechanism 5 squeezes the sponge block 42 to make the coolant fall into the cooling pool 2 to participate in the subsequent filtration process, thus reducing the waste of coolant. The coolant accumulated in the cooling pool 2 flows through the outlet pipe 21. The coolant falls into the first filtration zone 313 and flows from bottom to top. After being filtered once by the first filter plate 33, it flows into the second filtration zone 314. In the second filtration zone 314, the coolant is filtered a second time by the second filter plate 34 as it flows from top to bottom. Finally, it flows through the drain pipe 35 to the third filtration zone 315. The fine filter component 6 in the third filtration zone 315 filters the coolant three times. This ensures that iron filings of different particle sizes mixed in the coolant are filtered out, improving the subsequent spraying effect of the coolant.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A three-stage filtration system for grinding mold plates, comprising a frame (1), a cooling pool (2) disposed on the frame (1), baffles (4) disposed on opposite sides of the cooling pool (2), and a filtration mechanism (3) disposed below the frame (1), characterized in that, The two baffles (4) have mounting grooves (41) on their opposing surfaces. Each mounting groove (41) contains a sponge block (42) for absorbing coolant and a squeezing mechanism (5) for squeezing the sponge block (42). The filtration mechanism (3) includes a filter box (31). A first partition (311) is provided inside the filter box (31). A second partition (312) is provided on the first partition (311). The opposing surfaces of the second partition (312), the inner wall of the filter box (31), and the surface of the first partition (311) enclose a first filtration zone (313) and a second filtration zone (314). The first partition ( The lower surface of the filter box (31) and the inner wall of the filter box (31) form a third filter zone (315). The cooling pool (2) is connected to the first filter zone (313) through the liquid outlet pipe (21). The first partition (311) is provided with a drain pipe (35) connecting the second filter zone (314) and the third filter zone (315). The second partition (312) is provided with a first filter plate (33) for filtering large impurities. The second filter zone (314) is provided with a second filter plate (34) for filtering medium impurities. The third filter zone (315) is provided with a fine filter assembly (6) for filtering small impurities.

2. The three-stage filtration system for mold plate grinding according to claim 1, characterized in that, The extrusion mechanism (5) includes an extrusion plate (51) slidably connected in the mounting groove (41). The extrusion plate (51) has a plurality of extrusion protrusions (52) on its surface facing the sponge block (42). A triggering component (53) is provided in the mounting groove (41). When the sponge block (42) is saturated with water, the triggering component (53) drives the extrusion plate (51) to extrude the sponge block (42).

3. A three-stage filtration system for mold plate grinding according to claim 2, characterized in that, An elastic water-resistant membrane (43) is provided on the inner wall of the mounting groove (41). The elastic water-resistant membrane (43) is located between the extrusion plate (51) and the sponge block (42). The elastic water-resistant membrane (43) is flat in its natural state.

4. A three-stage filtration system for mold plate grinding according to claim 3, characterized in that, The inner wall of the mounting groove (41) is provided with a sliding groove (411). The outer surface of the sponge block (42) is provided with a mounting frame (421) that is slidably connected in the sliding groove (411). The trigger component (53) includes an elastic water bladder (531) fixed in the bottom wall of the sliding groove (411). The elastic water bladder (531) supports the bottom surface of the mounting frame (421). A slider (532) is provided on the extrusion plate (51). The mounting groove (41) is located within... The bottom wall is provided with an extrusion groove (412) that is slidably connected to the slider (532). The inner side wall of the extrusion groove (412) and the slider (532) are connected by a pushing water bag (533). The elastic water bag (531) and the pushing water bag (533) are connected by multiple connecting pipes (534). When the sponge block (42) is in an unsaturated state, the elastic water bag (531) is in a natural state, and the elastic water-resistant membrane (43) is flat.

5. A three-stage filtration system for mold plate grinding according to claim 1, characterized in that, A third partition (316) is provided on the first partition (311). The opposing surfaces of the third partition (316) and the inner wall of the third filtration zone (315) enclose a processing zone (3152) and a fine filtration zone (3151). An opening (3161) is provided on the third partition (316). The fine filtration assembly (6) includes an unwinding roller (61) and a winding roller (62) rotatably connected in the processing zone (3152). A soft magnetic tape (63) is wound on the unwinding roller (61). A plurality of drainage holes (631) are provided on the surface of the soft magnetic tape (63). A first conveying roller (64) is rotatably connected to the opening (3161). A second conveying roller (64) is rotatably connected to the end of the fine filtration zone (3151) away from the opening (3161). The free end of the soft magnetic tape (63) extends through the surfaces of the first conveying roller (64) and the second conveying roller (65) into the interior of the fine filtration zone (3151), passes around the second conveying roller (65), and then passes through the bottom surface of the first conveying roller (64) into the processing zone (3152), and is finally placed on the take-up roller (62). The opposing surfaces of the soft magnetic tape (63) are attached to the inner sidewall of the fine filtration zone (3151). A drive motor (81) is provided on the outer surface of the filter box (31). The drive motor (81) drives the unwinding roller (61) or the take-up roller (62) to rotate through the switching component (9). A processing component (7) for cleaning the soft magnetic tape (63) is provided in the processing zone (3152).

6. A three-stage filtration system for mold plate grinding according to claim 5, characterized in that, The processing assembly (7) includes a demagnetizing roller (71) rotatably connected to the processing area (3152). The demagnetizing roller (71) is located on the side of the take-up roller (62) away from the unwind roller (61). The demagnetizing roller (71) passes through the soft magnetic tape (63) and is fitted with a plurality of demagnetizing coils (72). The filter box (31) is provided with a power supply module (73) for supplying power to the demagnetizing coils (72) and a negative pressure pump (74). 4) The intake end is connected to a main air pipe (75), and the exhaust end is connected to a chip collection box (76). Two branch air pipes (77) are connected to the main air pipe (75). The two branch air pipes (77) extend into the processing area (3152) and are located on opposite sides of the soft magnetic tape (63). Multiple chip suction nozzles (78) are connected to the branch air pipes (77). The chip suction direction of the chip suction nozzles (78) is towards the soft magnetic tape (63).

7. A three-stage filtration system for mold plate grinding according to claim 6, characterized in that, The switching assembly (9) includes a drive gear (91) coaxially arranged with the output shaft of the drive motor (81). A first gear ring (92) meshing with the drive gear (91) is slidably sleeved at the end of the unwinding roller (61), and a second gear ring (93) meshing with the drive gear (91) is slidably sleeved at the end of the winding roller (62). Magnetic guide blocks (94) are provided on the inner circumferential surfaces of both the first gear ring (92) and the second gear ring (93). Magnetic guide blocks (94) are provided on the surfaces of the unwinding roller (61) and the winding roller (62) to engage with the guide blocks (94). 4) A sliding guide groove (10) is provided with a first electromagnetic plate (95) and a second electromagnetic plate (96) that are attracted and engaged with the guide block (94) on the inner sidewall of the guide groove (10); when the first electromagnetic plate (95) attracts the guide block (94), the first gear ring (92) or the second gear ring (93) meshes with the drive gear (91); when the second electromagnetic plate (96) attracts the guide block (94), the first gear ring (92) or the second gear ring (93) disengages from the drive gear (91).

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