Finish machining device for melt-blown fabric spinneret plate

Abstract

The invention relates to the technical field of high-precision machining and non-traditional machining, in particular to a finish machining device for a melt-blown fabric spinneret plate, which comprises a box body, a fixed seat and a placement table are fixedly connected to the table top of the box body, the fixed seat is located below the placement table, a cross-shaped rotating frame is mounted in the placement table, and the cross-shaped rotating frame is located below the placement table. The cross-shaped rotating frame is composed of a main rod and an auxiliary rod, the bottom face of the main rod is fixedly connected with a retreating rod, an open groove is formed in the upper surface of the main rod, and an output hole penetrating through the retreating rod is formed in the bottom wall of the open groove; a liftable fixing cover and a connecting pipe are arranged on the box body, a filtering part is fixedly connected to the inner wall of the connecting pipe, and a dredging part is arranged below the filtering part; full-domain synchronous finish machining of the micro holes, the hole edges and the end faces of the melt-blown cloth spinneret plate can be achieved, automatic operation is achieved, intelligent filter material blockage clearing and residual material clearing can be achieved, the machining efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of high-precision machining and special processing technology, specifically to a precision machining device for meltblown fabric spinnerets. Background Technology

[0002] The spinneret is a core component in the production of meltblown nonwoven fabrics. Its surface is densely covered with hundreds to thousands of micropores. The roughness of the inner walls of these micropores, the smoothness of the orifice edges, and the flatness of the workpiece end face collectively determine the flow characteristics and filament uniformity of the polymer melt, directly affecting the key performance indicators of the final meltblown fabric, such as filtration efficiency and uniformity. Therefore, comprehensive ultra-precision machining of the spinneret to achieve smooth inner walls of micropores, rounded transitions at orifice edges, and a mirror-like overall end face is a prerequisite for ensuring the production of high-quality meltblown fabrics.

[0003] However, existing finishing technologies struggle to efficiently and synergistically achieve the aforementioned overall polishing goals. While mechanical grinding methods, such as those using diamond micro-grinding needles, can precisely shape the surface, they are hole-by-hole operations, resulting in low efficiency and insufficient capacity to handle orifice radii and large-area end faces, requiring additional processes. Abrasive flow polishing, on the other hand, can utilize fluid media to treat all micro-orifice walls in one pass, improving efficiency, but its force cannot be effectively guided to orifice edges and workpiece end faces, leading to negligible polishing effects in these critical areas. Currently, the industry is forced to adopt multi-process combinations, which are not only complex and costly but also prone to introducing errors due to repeated clamping. Furthermore, the processes may interfere with each other, failing to fundamentally achieve consistent and synergistic improvement in the quality of the spinneret's micro-orifice walls, edges, and end faces, thus resulting in low spinneret manufacturing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a finishing device for meltblown fabric spinnerets, so as to solve the problem mentioned in the background art that it is impossible to simultaneously grind and polish the inner wall, edge and end face of the micropores of the spinneret.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a finishing device for meltblown fabric spinnerets, comprising a housing, a fixed base and a placement platform fixedly connected to the platform of the housing, the fixed base being located below the placement platform, a cross-shaped rotating frame installed inside the placement platform, the cross-shaped rotating frame consisting of a main rod and an auxiliary rod, a retraction rod fixedly connected to the bottom surface of the main rod, a slot being formed on the upper surface of the main rod, and an output hole penetrating the retraction rod being formed on the bottom wall of the slot; a liftable fixed cover and a connecting pipe are provided on the housing, a filter section is fixedly connected to the inner wall of the connecting pipe, and a cleaning component is provided below the filter section; a U-shaped groove is formed on the inner wall of the connecting pipe, the two ends of the U-shaped groove being located above and below the filter section respectively, and a baffle is slidably fitted to the groove wall of the U-shaped groove; a rotating rod is provided below the fixed cover.

[0006] Furthermore, a cylinder is fixedly connected to the top of the housing, a lower pressure plate is fixedly connected to the output end of the cylinder, a guide rod that moves through the lower pressure plate is fixedly connected to the platform of the housing, and a mounting block is fixedly connected to the bottom surface of the lower pressure plate.

[0007] Furthermore, the connecting pipe is fixedly connected to the bottom of the mounting block, the fixing cover is fixedly connected to the bottom of the connecting pipe, the inner wall of the connecting pipe is provided with a material conveying hole, the mounting block is provided with a hole and communicates with the material conveying hole in the connecting pipe, and the middle section of the material conveying hole is set as a tapered part.

[0008] Furthermore, a fixing plate is fixedly connected to the wall of the feeding hole, and a sliding rod is slidably inserted into the upper end of the fixing plate. The top of the sliding rod is fixedly connected to the bottom of the cleaning component, and a spring is fixedly connected between the cleaning component and the fixing plate. The spring is slidably sleeved on the outer wall of the sliding rod.

[0009] Furthermore, a lifting plate is fixedly connected to the wall of the feeding hole. The lifting plate is located below the fixed plate, and a sliding plate is slidably attached to the upper end of the lifting plate. The sliding plate is composed of an inclined plate and a straight plate. The inclined plate of the sliding plate abuts against the bottom of the sliding rod, and the straight plate of the sliding plate is fixedly connected to the baffle.

[0010] Furthermore, a turbine blade is rotatably connected to the bottom surface of the lifting plate, and a connecting rod is fixedly connected to the lower center of the turbine blade. The rotating rod is fixedly connected to the bottom of the connecting rod, and the height of the rotating rod is lower than the height of the fixed cover.

[0011] Furthermore, a limiting ring is fixedly connected to the edge of the fixed cover, and a stop rod is slidably inserted into the edge of the placement platform. An arc-shaped fixing member is fixedly connected to the end of the stop rod located inside the placement platform. When the fixed cover descends and covers the upper part of the placement platform, the end of the stop rod located outside the placement platform abuts against the inner wall of the limiting ring.

[0012] Furthermore, the retraction lever moves through the fixed base and the placement platform. A driven gear is fixedly connected to the lever body located inside the fixed base. A driving gear that meshes with the driven gear is rotatably installed on the inner wall of the fixed base through a driving component.

[0013] Furthermore, a second spring is provided between the fixed base and the placement platform. The bottom of the second spring is fixedly connected to the upper surface of the fixed base, the second spring is slidably sleeved on the outer wall of the retraction rod, and the top of the second spring is fixedly connected to the rod body of the retraction rod.

[0014] Furthermore, a lever is fixedly connected to the bottom of the main rod, a cleaning rod that is in contact with the lever is slidably attached to the inner bottom surface of the placement platform, and a discharge hole is provided on the inner bottom surface of the placement platform.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This precision machining device for meltblown fabric spinnerets uses a combination structure that achieves uniform abrasive speed distribution through the tapered part of the output hole, turbine blades drive the rotating rod to grind the upper surface of the spinneret, and a cross rotating frame works with the abrasive to polish the lower surface. This enables synchronous precision machining of the entire area of ​​the inner wall of the spinneret micropores, the edge of the orifice, and the upper and lower surfaces. It is also equipped with a filter section to accurately screen the abrasive, and an automatic anti-clogging design that links the cleaning components with the baffle, sliding plate, and sliding rod, effectively preventing abrasive from clogging the micropores or the filter section and causing processing interruption.

[0016] 2. The precision machining device for the meltblown fabric spinneret features a structure that automatically clamps the spinneret with a limiting edge ring, a guide rod, and an arc-shaped fixing plate. A spring-loaded retraction rod further facilitates automatic resetting and discharge of the spinneret after machining. This design enables automated positioning and clamping of the spinneret after loading, as well as automated discharge after machining, without requiring manual adjustment. Simultaneously, it incorporates an external suction device at the output port to create negative pressure, removing abrasive residue from the micropores. A pusher block and cleaning rod work together to automatically clean waste from the placement table, allowing for simultaneous machining and waste removal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 This is a cross-sectional view of the fixing cover and connecting tube of the present invention. Figure 1 ; Figure 4 For the present invention Figure 3 Enlarged structural diagram of part A in the middle; Figure 5 This is a cross-sectional view of the fixing cover and connecting tube of the present invention. Figure 2 ; Figure 6 For the present invention Figure 5 Enlarged structural diagram of section B; Figure 7 This is a schematic diagram of the internal structure of the placement platform of the present invention. Figure 1 ; Figure 8 This is a schematic diagram of the internal structure of the placement platform of the present invention. Figure 2 ; Figure 9 This is a cross-sectional view of the fixing base of the present invention.

[0018] In the attached diagram, the components represented by each number are as follows: 1. Box body; 2. Fixed base; 3. Placement platform; 4. Fixed cover; 401. Limiting ring; 5. Lower pressure plate; 6. Cylinder; 7. Guide rod; 8. Connecting pipe; 9. Feeding hole; 901. Conical part; 10. Filter part; 11. Cleaning component; 12. Sliding rod; 13. Spring 1; 14. Fixed plate; 15. U-shaped groove; 16. Sliding plate; 17. Baffle; 18. Lifting plate; 19. Turbine blade; 20. Connecting rod; 21. Rotating rod; 22. Retraction rod; 23. Spring 2; 24. Mounting block; 25. Cross rotating frame; 2501. Main rod; 2502. Auxiliary rod; 2503. Slot; 26. Discharge hole; 27. Output hole; 28. Arc-shaped fixing component; 29. ​​Push rod; 30. Driven gear; 31. Driven gear; 32. Pulley; 33. Cleaning rod. Detailed Implementation

[0019] 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, and 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.

[0020] This invention provides a technical solution: such as Figures 1-9 The device shown is a finishing device for meltblown fabric spinnerets, including a housing 1. A fixed base 2 and a placement platform 3 are fixedly connected to the platform of the housing 1. The fixed base 2 is located below the placement platform 3. A cross rotating frame 25 is installed inside the placement platform 3. The cross rotating frame 25 consists of a main rod 2501 and an auxiliary rod 2502. A retraction rod 22 is fixedly connected to the bottom surface of the main rod 2501. A slot 2503 is opened on the upper surface of the main rod 2501. An output hole 27 penetrating the retraction rod 22 is opened on the bottom wall of the slot 2503. A liftable fixed cover 4 and a connecting pipe 8 are provided on the housing 1. A filter section 10 is fixedly connected to the inner wall of the connecting pipe 8. A cleaning component 11 is provided below the filter section 10. A U-shaped groove 15 is opened on the inner wall of the connecting pipe 8. The two ends of the U-shaped groove 15 are located above and below the filter section 10, respectively. A baffle 17 is slidably attached to the groove wall of the U-shaped groove 15. A rotating rod 21 is provided below the fixed cover 4.

[0021] In this invention, the placement platform 3 is fixedly connected to the box 1 by a long rod, which is not shown in the attached drawings.

[0022] In this invention, the main rod 2501 and auxiliary rod 2502 of the cross-shaped rotating frame 25 are integrally formed and distributed in a cross shape, which can stably support meltblown fabric spinnerets of different specifications. The main rod 2501 and the placement platform 3 are clearance-fitted to ensure that the cross-shaped rotating frame 25 can rotate and move up and down smoothly within the placement platform 3. The slot 2503 is opened along the length direction of the main rod 2501, and its slot width is adapted to the micro-hole arrangement area of ​​the spinneret. The output hole 27 is a straight hole structure and is connected to the slot 2503 to ensure that the negative pressure airflow can smoothly act on the micro-holes of the spinneret. The fixing cover 4 is a hollow cylindrical structure, and its inner diameter is adapted to the outer diameter of the placement platform 3, which can be used with the placement platform 3. The platform 3 achieves precise engagement. The connecting pipe 8 is a rigid tubular structure and is coaxially fixedly connected to the fixing cover 4. The filter section 10 is a multi-layer filter structure. The pore size of the filter is determined according to the micropore diameter of the spinneret, which can filter large-diameter abrasive particles or agglomerated abrasive particles in the abrasive medium. The cleaning component 11 is a comb-shaped structure. The spacing of its comb teeth corresponds one-to-one with the filter mesh hole position of the filter section 10, which can be precisely inserted into the filter mesh hole for cleaning. The baffle 17 is a rigid sealing plate and has a sliding seal fit with the U-shaped groove 15 to prevent the abrasive medium from leaking from the U-shaped groove 15. The rotating rod 21 is made of hard alloy material, and its end is rounded to avoid scratching the surface of the spinneret during the grinding process.

[0023] A cylinder 6 is fixedly connected to the top of the housing 1. A lower pressure plate 5 is fixedly connected to the output end of the cylinder 6. A guide rod 7, which moves through the lower pressure plate 5, is fixedly connected to the platform of the housing 1. A mounting block 24 is fixedly connected to the bottom of the lower pressure plate 5. A connecting pipe 8 is fixedly connected to the bottom of the mounting block 24. A fixing cover 4 is fixedly connected to the bottom of the connecting pipe 8. A material conveying hole 9 is opened in the inner wall of the connecting pipe 8. A hole is opened in the mounting block 24 and communicates with the material conveying hole 9 in the connecting pipe 8. The middle section of the material conveying hole 9 is set as a tapered part 901. A fixing plate 14 is fixedly connected to the wall of the material conveying hole 9. A sliding rod 12 is slidably inserted into the upper end of the fixing plate 14. The top of the sliding rod 12 is fixedly connected to the bottom of the cleaning component 11. A spring 13 is fixedly connected between the cleaning component 11 and the fixed plate 14. The spring 13 is slidably sleeved on the outer wall of the slide rod 12. A lifting plate 18 is fixedly connected to the wall of the material conveying hole 9. The lifting plate 18 is located below the fixed plate 14. A sliding plate 16 is slidably attached to the upper end of the lifting plate 18. The sliding plate 16 is composed of an inclined plate and a straight plate. The inclined plate of the sliding plate 16 abuts against the bottom of the slide rod 12. The straight plate of the sliding plate 16 is fixedly connected to the baffle 17. A turbine blade 19 is rotatably connected to the bottom surface of the lifting plate 18. A connecting rod 20 is fixedly connected to the center of the lower end of the turbine blade 19. A rotating rod 21 is fixedly connected to the bottom of the connecting rod 20. The height of the rotating rod 21 is lower than the height of the fixed cover 4.

[0024] In this invention, cylinder 6 is fixed to the crossbeam at the top of housing 1 by bolts, providing power for the lifting and lowering action of the device. There are two guide rods 7, symmetrically distributed on both sides of cylinder 6, which slide with the lower pressure plate 5 to guide the movement and ensure that the lower pressure plate 5 moves smoothly in the vertical direction, avoiding deviation. The mounting block 24 is bolted to the lower pressure plate 5 for easy disassembly and maintenance. The through hole in the mounting block 24 is connected to the external abrasive conveying equipment to provide a conveying channel for the abrasive medium. The conveying hole 9 has a stepped hole structure, consisting of a narrow pipe section, a tapered section 901, and a thick pipe section. The tapered design of the tapered section 901 can increase the speed and uniform distribution of the abrasive medium, allowing the abrasive to act more evenly on the surface of the spinneret. The fixed plate 14 is welded to the inner wall of the feed hole 9 to provide stable support for the slide rod 12. The slide rod 12 and the fixed plate 14 are clearance fit to ensure that the slide rod 12 can slide smoothly in the vertical direction. The spring 13 is a compression spring, and its elastic force can drive the slide rod 12 and the cleaning component 11 to quickly return to their original positions. The inclined plate of the sliding plate 16 is designed with a 45-degree inclination angle, which can convert the horizontal movement of the baffle 17 into the vertical movement of the slide rod 12. The straight plate and the baffle 17 are welded to each other to ensure that the two can move synchronously.

[0025] The lifting plate 18 is welded to the inner wall of the feeding hole 9 to provide support for the sliding plate 16 and the turbine blade 19. The blade of the turbine blade 19 is arc-shaped to fully withstand the impact of the abrasive medium and achieve efficient rotation. The connecting rod 20 is coaxially fixed to the turbine blade 19 to ensure the coaxiality of the transmission. The rotating rod 21 is bolted to the connecting rod 20 to facilitate the replacement of rotating rods 21 of different lengths according to the specifications of the spinneret. A gap is left between the rotating rod 21 and the inner wall of the fixed cover 4 to avoid interference during rotation.

[0026] To facilitate quick maintenance of internal components, the connecting pipe 8 is threaded to the bottom of the mounting block 24. The connecting pipe 8 adopts a semi-circular pipe splicing design. After disassembly, all internal components such as the filter section 10, cleaning component 11, and slide rod 12 can be fully exposed. This solves the problem that the internal components of the original integrated connecting pipe 8 need to be completely disassembled or even destructively disassembled for maintenance, reducing the difficulty of maintenance. In addition, the joints are all sealed with a sealing groove and a fluororubber gasket.

[0027] A limiting ring 401 is fixedly connected to the edge of the fixed cover 4. A stop rod 29 is slidably inserted through the edge of the placement platform 3. An arc-shaped fixing member 28 is fixedly connected to one end of the stop rod 29 inside the placement platform 3. When the fixed cover 4 descends and covers the upper end of the placement platform 3, the end of the stop rod 29 outside the placement platform 3 abuts against the inner wall of the limiting ring 401. A retraction rod 22 movably passes through the fixed base 2 and the placement platform 3. A driven gear 30 is fixedly connected to the rod body of the retraction rod 22 inside the fixed base 2. The inner wall of the fixed base 2 is rotated by a driving member. A drive gear 31 that meshes with the driven gear 30 is mounted on the fixed base 2; a second spring 23 is provided between the fixed base 2 and the placement platform 3. The bottom of the second spring 23 is fixedly connected to the upper surface of the fixed base 2. The second spring 23 is slidably sleeved on the outer wall of the retraction rod 22. The top of the second spring 23 is fixedly connected to the rod body of the retraction rod 22. A lever 32 is fixedly connected to the bottom of the main rod 2501. A cleaning rod 33 that is in contact with the lever 32 is slidably attached to the inner bottom surface of the placement platform 3. A discharge hole 26 is opened on the inner bottom surface of the placement platform 3.

[0028] In this invention, the driving component can be a motor (servo motor or stepper motor, etc., and the motor model is not limited here), which drives the drive gear 31 to rotate; The limiting ring 401 and the fixing cover 4 are integrally formed. The outer wall of the ring is provided with a sloping groove, which is a smooth sloping transition structure, so as to smoothly push the push rod 29 to move in the horizontal direction. The push rod 29 and the placement platform 3 are clearance fit, and the outer wall of the push rod 29 is fitted with a wear-resistant rubber sleeve to reduce wear during sliding. The arc-shaped fixing part 28 is made of soft alloy material (soft tin bronze, tin-based Babbitt alloy, etc.). Its arc curvature is adapted to the edge shape of the spinneret, which can fit tightly against the edge of the spinneret and avoid damaging the surface of the spinneret. The arc-shaped fixing part 28 and the push rod 29 are fixed by welding or threaded connection to ensure the firmness of the connection.

[0029] The retraction rod 22 and the fixed seat 2 are in a sliding seal fit. The sealing gasket installed in the fixed seat 2 can prevent external impurities from entering. The driven gear 30 and the retraction rod 22 are connected by a key. The driving gear 31 and the drive motor in the fixed seat 2 are connected by a coupling. The gear module of the driven gear 30 and the driving gear 31 are the same to ensure the smoothness of the transmission. The two are always in a meshing state. Even if the retraction rod 22 moves up and down, there will be no tooth disengagement.

[0030] Spring 23 is a compression spring. Its lower part is welded to the top surface of the fixed base 2, and its upper part is welded to the protrusion of the retraction rod 22. It is not connected to the placement platform 3. Spring 23 drives the retraction rod 22 and the cross rotating frame 25 to quickly reset through its own elastic force. The lever 32 is welded to the main rod 2501 and rotates synchronously with the main rod 2501. One end of the cleaning rod 33 is equipped with a brush. The brush can fit against the inner bottom surface of the placement platform 3 (in order to facilitate the lever 32 to drive the cleaning rod 33, a slot can be provided at the other end of the cleaning rod 33, and the lever 32 can be embedded in the slot). This drives the cleaning rod 33 to slide along the inner wall of the placement platform 3. The discharge hole 26 is opened at the low point of the inner bottom surface of the placement platform 3 and is connected to the external waste collection equipment. It can smoothly discharge the waste and excess abrasive generated during the grinding process. It should be noted that the bottom of the push block 32 can be set to an arc shape, and the top of the sweeping bar 33 can also be set to an arc shape. When the push block 32 is above the sweeping bar 33, the push block 32 will descend and push the sweeping bar 33 away, thus not affecting the descent of the push block 32 (under normal circumstances, the push block 32 and the sweeping bar 33 are misaligned).

[0031] Working principle: In actual use, this device can achieve fully automated positioning of the meltblown fabric spinneret and simultaneous multi-area grinding and polishing without manual adjustment, effectively improving processing efficiency and accuracy. The specific working process is as follows: First, the spinneret is loaded. The spinneret to be processed is placed on the cross-rotating frame 25 in the placement table 3. The main rod 2501 and auxiliary rod 2502 of the cross-rotating frame 25 are arranged in a cross shape to provide multi-point support for the bottom of the spinneret, stably supporting the spinneret and ensuring that the spinneret is placed horizontally, so as to avoid affecting the subsequent processing accuracy due to the placement being crooked. After loading is completed, the cylinder 6 at the top of the box 1 is started. The output end of the cylinder 6 extends downward, driving the lower pressure plate 5 to move vertically downward along the guide rod 7. During the downward movement of the lower pressure plate 5, the mounting block 24 at the bottom moves down synchronously. The mounting block 24 then drives the connecting pipe 8 and the fixing cover 4 to move vertically downward synchronously until the fixing cover 4 is engaged at the upper end of the placement table 3, realizing the closure of the processing area.

[0032] During the downward movement of the fixed cover 4, the limiting ring 401 at its edge will contact the abutment 29 on the outer side of the placement table 3. The inclined groove on the inner side of the limiting ring 401 will generate a horizontal pushing force on the abutment 29, pushing the abutment 29 to slide along the side wall of the placement table 3 into the placement table 3. The abutment 29 will then drive the arc-shaped fixing part 28 at its end to move synchronously until the arc-shaped fixing part 28 is tightly attached to the edge of the spinneret, realizing the automatic clamping and positioning of the spinneret. The entire clamping process only requires placing the spinneret on the cross rotating frame 25, without any manual adjustment, effectively improving the efficiency of feeding and positioning. At the same time, during the downward movement of the fixed cover 4, the rotating rod 21 below it will first contact the upper surface of the spinneret and generate downward pressure on the spinneret, pushing the spinneret to drive the cross rotating frame 25 to move vertically downward. The main rod 2501 of the cross rotating frame 25 will then drive the bottom retractor. The retracting rod 22 moves vertically downward along the fixed base 2. During the downward movement of the retracting rod 22, the second spring 23 is compressed and stored in energy, providing power for the subsequent resetting and discharge of the spinneret. During this process, the retracting rod 22 will drive the driven gear 30 on its rod body to move vertically downward synchronously. The thickness of the driven gear 30 is greater than the thickness of the driving gear 31. Therefore, when the driven gear 30 moves downward, it still maintains a meshing state with the driving gear 31 and there will be no disengagement (at the same time, the distance that the driven gear 30 moves downward does not exceed the thickness of the driving gear 31), ensuring the effectiveness of the subsequent rotational transmission. (Alternatively, a housing limit can be set on the driven gear 30 and the driving gear 31. The driving component that drives the driving gear 31 to rotate is slidably installed in the inner wall of the fixed base 2. In this way, when the retracting rod 22 moves downward, the driven gear 30 and the driving gear 31 move downward synchronously, and only the driving gear 31 pushes the driving component downward.)

[0033] After the spinneret is clamped and positioned downwards, the external fluid abrasive conveying equipment is started. The abrasive medium enters the feed hole 9 of the connecting pipe 8 through the through hole in the mounting block 24. The abrasive medium passes through the flow channel structure of the narrow pipe section, the conical part 901, and the coarse pipe section in sequence in the feed hole 9. The tapered design of the conical part 901 can realize the speed increase and uniform distribution of the abrasive medium, so that when the abrasive medium flows out from the coarse pipe section, the flow rate and distribution are more uniform, ensuring the consistency of subsequent grinding. The abrasive medium continues to move downwards and passes through the filter section 10. The multi-layer filter screen of the filter section 10 can filter and screen the abrasive medium to prevent abrasive particles with excessively large particle size or agglomerated abrasive particles from entering the processing area. If such abrasive particles enter, their size is close to or even larger than the micro-orifice diameter of the spinneret, which can easily form a blockage at the orifice opening or in the narrow part of the hole, causing the processing to be interrupted. Therefore, the filter section 10 can ensure that the processing is smooth.

[0034] If the filter screen of the filter section 10 becomes clogged due to trapping too many large-diameter abrasive particles, the abrasive medium above the filter section 10 will not be able to pass through smoothly. The pressure above the filter section 10 will increase rapidly and will be much greater than the pressure below the filter section 10. This pressure difference will generate a horizontal thrust on the baffle 17 in the U-shaped groove 15, pushing the baffle 17 to slide away from the filter section 10 along the U-shaped groove 15. The baffle 17 will then drive the sliding plate 16 fixedly connected to it to move horizontally in sync. The inclined plate of the sliding plate 16 will contact the bottom of the slide rod 12 and generate a vertical upward thrust on the slide rod 12, pushing the slide rod 12 to move vertically upward along the fixed plate 14. The slide rod 12 will then drive the cleaning component 11 at its top to move upward in sync. The comb teeth of the cleaning component 11 will accurately insert into the filter screen holes of the filter section 10 to clean the blockage in the filter screen holes, realizing the automatic unclogging of the filter section 10. During this process, the spring 13 on the slide rod 12 will be compressed and in an energy storage state.

[0035] When the filter screen holes of the filter section 10 are cleared, the pressure difference between the upper and lower parts of the filter section 10 disappears, and the spring 13 releases its elastic force, causing the slide rod 12 and the cleaning component 11 to move vertically downwards and reset. The cleaning component 11 is pulled out of the filter screen holes. At the same time, the bottom of the slide rod 12 pushes the inclined plate of the sliding plate 16, causing the sliding plate 16 and the baffle 17 to reset horizontally in sync. The baffle 17 re-seals the U-shaped groove 15 to ensure that the abrasive medium does not leak from the U-shaped groove 15. The lifting plate 18 serves as a support for the sliding plate 16, providing stable support for the horizontal sliding of the sliding plate 16 and ensuring that the sliding plate 16 can move.

[0036] After passing through the filter section 10, the abrasive media continues to move vertically downwards, impacting the turbine blades 19 at the bottom of the lifting plate 18. The arc-shaped blades of the turbine blades 19 can fully absorb the impact force of the abrasive media, causing the turbine blades 19 to rotate at high speed around their own axis. The turbine blades 19 then drive the connecting rod 20 at its bottom to rotate synchronously, which in turn drives the rotating rod 21 at its bottom to rotate at high speed. The end of the rotating rod 21 contacts the upper surface of the spinneret. The high-speed rotating rod 21 can polish the upper surface of the spinneret, effectively removing burrs, protrusions, and other foreign objects from the upper surface of the spinneret. At the same time, the high-speed rotation of the rotating rod 21 will cause the abrasive media on the upper surface of the spinneret to rotate synchronously, allowing the abrasive media to have sufficient frictional contact with the upper surface of the spinneret, further achieving the polishing treatment of the upper surface of the spinneret and ensuring the flatness of the upper surface.

[0037] Driven by the rotating rod 21, the abrasive media evenly covers the upper surface of the spinneret and gradually enters each micro-orifice of the spinneret. During its flow within the micro-orifices, the abrasive media generates sufficient friction with the inner walls of the micro-orifices, polishing them and achieving a smooth finish. This solves the problem of insufficient polishing of the micro-orifice inner walls in traditional processing methods. After polishing the inner walls of the micro-orifices, the abrasive media flows out from the lower end of the micro-orifices and onto the lower surface of the spinneret. At this point, the drive motor inside the fixed base 2 is activated, driving the drive gear 31 to rotate. The driving gear 31 drives the driven gear 30, which meshes with it, to rotate synchronously. The driven gear 30 drives the retraction rod 22 to rotate, which in turn drives the top cross rotating frame 25 to rotate synchronously. The main rod 2501 and auxiliary rod 2502 of the cross rotating frame 25 will make frictional contact with the lower surface of the spinneret. During the rotation, the lower surface of the spinneret is polished. At the same time, the rotation of the cross rotating frame 25 will drive the abrasive media on the lower surface of the spinneret to move synchronously, allowing the abrasive media to fully rub against the lower surface of the spinneret, further improving the polishing effect of the lower surface.

[0038] During the rotation of the cross-shaped rotating frame 25, when the micro-orifice of the spinneret rotates above the slot 2503 of the main rod 2501, the output hole 27 of the retraction rod 22 is connected to an external air extraction device. The air extraction device will create a negative pressure environment in the slot 2503 through the output hole 27. This negative pressure will generate an adsorption force on the abrasive medium in the micro-orifice of the spinneret, sucking out any abrasive medium that may remain in the micro-orifice, thus preventing the abrasive medium from remaining in the micro-orifice and causing micro-orifice blockage. At the same time, it can also suck out the debris generated by grinding in the micro-orifice, ensuring the cleanliness of the micro-orifice.

[0039] During the rotation of the main rod 2501 of the cross rotating frame 25, the bottom paddle block 32 rotates synchronously. The paddle block 32 cooperates with the cleaning rod 33 inside the placement table 3, causing the cleaning rod 33 to slide back and forth along the inner wall of the placement table 3. The brush at the end of the cleaning rod 33 cleans the inner bottom surface of the placement table 3, sweeping the debris and excess abrasive media generated during the grinding process to the discharge hole 26 of the placement table 3. The debris and abrasive media are discharged through the discharge hole 26 to the external waste collection device, ensuring the cleanliness of the inside of the placement table 3 and preventing waste accumulation from affecting subsequent processing.

[0040] After the inner wall, edge, and upper and lower surfaces of the spinneret's micro-holes are polished, the drive motor and external abrasive conveying and extraction equipment are turned off. The output end of the control cylinder 6 retracts upward, causing the lower pressure plate 5 to move vertically upward along the guide rod 7. The lower pressure plate 5 then causes the mounting block 24, connecting pipe 8, and fixing cover 4 to move vertically upward simultaneously. The fixing cover 4 is released from the placement table 3, and the pushing force of the limiting ring 401 on the abutment rod 29 disappears. The abutment rod 29 and the arc-shaped fixing piece 28 return to their initial positions, releasing the clamping of the spinneret. At the same time, the compressed spring 23 releases its elastic force, causing the retraction rod 22 to move vertically upward. The retraction rod 22 then causes the cross rotating frame 25 to move vertically upward simultaneously with the spinneret, pushing the finished spinneret out of the processing area of ​​the placement table 3 for easy handling by workers, thus completing the entire finishing process of the spinneret.

[0041] It should be noted that the cross-shaped rotating frame 25 only starts to rotate after the fixed cover 4 is completely covered on the placement platform 3. When the lever 32 touches the cleaning rod 33, it will continuously drive the cleaning rod 33 to move. The abutment 29 is equipped with a reset mechanism (reset spring, tension spring, etc.) in the position inside the placement platform 3, which can reset the abutment 29, or it can be manually operated by the staff.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A finishing device for meltblown fabric spinnerets, comprising a housing (1), characterized in that: A fixed base (2) and a placement platform (3) are fixedly connected on the platform of the box (1). The fixed base (2) is located below the placement platform (3). A cross rotating frame (25) is installed inside the placement platform (3). The cross rotating frame (25) is composed of a main rod (2501) and an auxiliary rod (2502). A retraction rod (22) is fixedly connected to the bottom surface of the main rod (2501). A slot (2503) is opened on the upper surface of the main rod (2501). An output hole (27) is opened through the retraction rod (22) on the bottom wall of the slot (2503). The housing (1) is provided with a liftable fixed cover (4) and a connecting pipe (8). The inner wall of the connecting pipe (8) is fixedly connected to a filter part (10), and a cleaning component (11) is provided below the filter part (10). The inner wall of the connecting pipe (8) is provided with a U-shaped groove (15), and the two ends of the U-shaped groove (15) are located above and below the filter section (10) respectively. The groove wall of the U-shaped groove (15) is slidably attached to a baffle (17). A rotating rod (21) is provided below the fixed cover (4).

2. The finishing device for meltblown fabric spinnerets according to claim 1, characterized in that: A cylinder (6) is fixedly connected to the top of the box (1), and a lower pressure plate (5) is fixedly connected to the output end of the cylinder (6). A guide rod (7) that moves through the lower pressure plate (5) is fixedly connected to the table surface of the box (1), and an installation block (24) is fixedly connected to the bottom surface of the lower pressure plate (5).

3. The finishing device for meltblown fabric spinnerets according to claim 1, characterized in that: The connecting pipe (8) is fixedly connected to the bottom of the mounting block (24), and the fixing cover (4) is fixedly connected to the bottom of the connecting pipe (8). The inner wall of the connecting pipe (8) is provided with a feeding hole (9). The mounting block (24) is provided with a hole and is connected to the feeding hole (9) in the connecting pipe (8). The middle section of the feeding hole (9) is set as a tapered part (901).

4. The finishing device for meltblown fabric spinnerets according to claim 3, characterized in that: A fixing plate (14) is fixedly connected to the wall of the feeding hole (9). A sliding rod (12) is slidably inserted into the upper end of the fixing plate (14). The top of the sliding rod (12) is fixedly connected to the bottom of the cleaning component (11). A spring (13) is fixedly connected between the cleaning component (11) and the fixing plate (14). The spring (13) is slidably sleeved on the outer wall of the sliding rod (12).

5. The finishing device for meltblown fabric spinnerets according to claim 4, characterized in that: The wall of the feeding hole (9) is fixedly connected to a lifting plate (18), the lifting plate (18) is located below the fixed plate (14), and the upper end of the lifting plate (18) is slidably attached to a sliding plate (16), the sliding plate (16) is spliced ​​from an inclined plate and a straight plate. The inclined plate of the sliding plate (16) abuts against the bottom of the sliding rod (12), and the straight plate of the sliding plate (16) is fixedly connected to the baffle (17).

6. The finishing device for meltblown fabric spinnerets according to claim 5, characterized in that: The bottom surface of the lifting plate (18) is rotatably connected to a turbine blade (19), and a connecting rod (20) is fixedly connected to the center of the lower end of the turbine blade (19). The rotating rod (21) is fixedly connected to the bottom of the connecting rod (20), and the height of the rotating rod (21) is lower than the height of the fixed cover (4).

7. The finishing device for meltblown fabric spinnerets according to claim 1, characterized in that: The fixed cover (4) is fixedly connected to the edge of the limiting ring (401), and the edge of the placement platform (3) is slidably inserted with a stop rod (29). The end of the stop rod (29) located inside the placement platform (3) is fixedly connected to an arc-shaped fixing member (28). When the fixed cover (4) descends and covers the upper end of the placement platform (3), the end of the stop rod (29) located outside the placement platform (3) abuts against the inner wall of the limiting ring (401).

8. The finishing device for meltblown fabric spinnerets according to claim 1, characterized in that: The retraction rod (22) moves through the fixed seat (2) and the placement platform (3). The retraction rod (22) is fixedly connected to the rod body inside the fixed seat (2) with a driven gear (30). The inner wall of the fixed seat (2) is rotatably mounted with a driving gear (31) that meshes with the driven gear (30) through a driving component.

9. A finishing device for meltblown fabric spinnerets according to claim 1, characterized in that: A second spring (23) is provided between the fixed seat (2) and the placement platform (3). The bottom of the second spring (23) is fixedly connected to the upper surface of the fixed seat (2). The second spring (23) is slidably sleeved on the outer wall of the retraction rod (22). The top of the second spring (23) is fixedly connected to the rod body of the retraction rod (22).

10. A finishing device for meltblown fabric spinnerets according to claim 9, characterized in that: The bottom of the main rod (2501) is fixedly connected to a lever (32), and the inner bottom surface of the placement platform (3) is slidably fitted with a cleaning rod (33) that fits against the lever (32). The inner bottom surface of the placement platform (3) is provided with a discharge hole (26).

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