A wear-resistant flat top of a carding machine based on chemical composite plating technology

Abstract

The application discloses a wear-resistant movable flat of a carding machine based on a chemical composite plating technology and relates to the technical field of carding machines.The movable flat comprises a flat framework and a flat connecting body, the bottom of the flat framework is provided with the flat connecting body, the bottom of the flat connecting body is symmetrically connected with wedge-shaped blocks in a detachable mode, and the outer walls of the wedge-shaped blocks are symmetrically provided with fixing columns.The wedge-shaped blocks, alloy plating layers and fixing columns are arranged on the movable flat, so that the flat needle teeth are detachably arranged in sections, the problem that the traditional movable flat is forced to be scrapped as a whole due to the wear of the inlet section of the flat needle teeth and the resource waste problem that the flat needle teeth with low wear degree at the outlet section are discarded is solved, the puncture resistance and wear resistance of the flat needle teeth are improved, and the material consumption and maintenance cost of the flat needle teeth of the carding machine are reduced.

Description

Technical Field

[0001] This invention relates to the field of carding machine technology, specifically to a wear-resistant carding machine movable cover plate based on chemical composite coating technology. Background Technology

[0002] The carding machine is the core equipment in the spinning process. The movable cover plate is an important carding element between the carding roller and the cylinder. Its card cloth works together with the cylinder card cloth to finely card the fibers, mix them evenly, and remove impurities and short fibers.

[0003] Traditional cover plates are mostly one-piece needle cloth structures. However, the needle teeth in the inlet section wear out much faster than those in the outlet section because they come into contact with the high-impurity fiber bundles first. When the inlet section fails, the needle teeth in the outlet section, which still have 50%–70% of their lifespan remaining, are forced to be scrapped, resulting in significant waste of materials and costs.

[0004] Patent CN117265704A discloses a movable cover plate installation structure and its installation method. The above patent enables rapid positioning of the cover plate body, facilitates installation, reduces the difficulty of worker operation, saves installation or disassembly time, and improves work efficiency.

[0005] The aforementioned patent solves the problems of traditional movable cover plate installation, which relies entirely on manual adjustment, resulting in unstable installation accuracy. During disassembly, the side clamps of the movable cover plate need to be pried open, which is time-consuming and labor-intensive for workers. The installation and disassembly process is cumbersome and affects production efficiency. However, there is still room for optimization in the replacement of the movable cover plate toothed pins. This application solves the problem of resource waste caused by the traditional movable cover plate being forced to be scrapped as a whole due to the wear of the pins in the inlet section first, resulting in the discarding of the pins with low wear in the outlet section.

[0006] Therefore, this application proposes a wear-resistant carding machine movable cover plate based on chemical composite coating technology to achieve segmented and rapid disassembly and assembly of the cover plate needle teeth. Summary of the Invention

[0007] The purpose of this invention is to provide a wear-resistant movable cover plate for a carding machine based on chemical composite coating technology, so as to solve the technical problem mentioned in the background art that the traditional movable cover plate is forced to be scrapped as a whole due to the wear of the needle teeth in the inlet section first, resulting in the waste of resources by discarding the needle teeth with low wear in the outlet section.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a wear-resistant carding machine movable cover plate based on chemical composite coating technology, comprising a cover plate skeleton and a cover plate connector. The cover plate connector is provided at the bottom of the cover plate skeleton. The bottom of the cover plate connector is symmetrically and detachably connected to wedge blocks. Fixed columns are symmetrically provided on the outer walls of the wedge blocks. The cover plate connector is slidably connected to the outer walls of the fixed columns. The side walls of the fixed columns are in contact with a fixed circular plate. The outer walls of the fixed circular plate are connected to the cover plate connector via threads. A base plate is fixedly connected to the bottom of the outer walls of the wedge blocks. Cover plate needle teeth are provided at the bottom of the base plate. The outer walls of the cover plate needle teeth are provided with an alloy coating.

[0009] Preferably, a buffer pad is provided at the contact position between the bottom of the outer wall of the base plate and the outer wall of the cover plate needle teeth, a reinforcing rib is fixedly connected to the outer wall of the cover plate needle teeth, a base plate is fixedly connected to the outer wall of the reinforcing rib, and a resistance elastomer is fixedly connected to the bottom of the outer wall of the buffer pad. The resistance elastomer and the buffer pad are fixedly fitted onto the outer wall of the cover plate needle teeth.

[0010] Preferably, a displacement block is fixedly connected to the top of the cover plate connector, and connecting arms are symmetrically arranged on the top of the displacement block. A slider is arranged on the side of the connecting arm away from the displacement block. The slider is movably fitted on the outer wall of the rotating screw. The rotating screw is movably installed on the side wall of the stepper motor. The stepper motor is fixedly installed inside the cover plate frame. The stepper motor is connected to a vision sensor through a signal line. The vision sensor is located on one side of the cover plate frame and the cover plate connector. A color-developing metal layer is provided between the bottom of the cover plate needle teeth and the alloy plating layer.

[0011] Preferably, the inner wall of the fixed column is slidably connected to an abutment block, the side wall of the abutment block is in contact with the fixed circular plate, the side of the abutment block away from the fixed circular plate is in contact with an abutment rod, the outer wall of the abutment rod is symmetrically provided with sliding grooves, the side of the abutment rod away from the abutment block is connected to the fixed column through a connecting spring, the inner wall of the fixed column is slidably connected to an extrusion block, the side wall of the extrusion block is fixedly connected to an inclined block, the side wall of the inclined block is slidably connected to a sliding groove, and the side of the extrusion block away from the inclined block is in contact with the cover plate connector.

[0012] Preferably, the side of the fixed column away from the fixed circular plate is in contact with the pop-out plate, a return spring is fixedly connected to the side wall of the pop-out plate, an ejector plate is fixedly connected to the side wall of the return spring, and a cover plate connector is threadedly connected to the outer wall of the ejector plate.

[0013] Preferably, the side wall of the cover plate connector has a screw-in groove and an ejection groove. The outer wall of the screw-in groove is connected to a fixed circular plate by a thread, and the outer wall of the ejection groove is connected to an ejection plate by a thread.

[0014] Preferably, the cover plate connecting body has an arc-shaped groove, and a fixed column is slidably connected to one side wall of the arc-shaped groove. The screw-in groove and the ejection groove are respectively connected to the arc-shaped groove.

[0015] Preferably, the bottom of the cover plate connector is symmetrically provided with wedge-shaped grooves, which are fitted onto the outer wall of the wedge block. The outer wall of the wedge block is symmetrically provided with arc-shaped grooves, and the side walls of the arc-shaped grooves are slidably connected with fixed columns.

[0016] Preferably, the cover plate connector is symmetrically provided with rotating plates, and the sidewalls of the rotating plates are connected to cams via a drive shaft.

[0017] Preferably, airbags are equidistantly arranged on the arc-shaped groove, the interior of airbags is connected to the interior of airbags, airbags are fixedly installed inside airbags, airbags are in contact with the bottom plate, and airbags are in contact with the compression block.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention, through the installation of wedge blocks, alloy plating, and fixing columns, enables segmented and rapid disassembly and assembly of the cover plate needle teeth. This allows the cover plate needle teeth of the inlet or outlet section to be replaced independently, solving the resource waste problem of traditional movable cover plates being forced to be scrapped as a whole due to the wear of the cover plate needle teeth in the inlet section first, resulting in the waste of cover plate needle teeth with low wear in the outlet section. A nickel-phosphorus alloy plating is set on the surface of the cover plate needle teeth to form a multi-layer gradient wear-resistant structure, resisting wear layer by layer, improving the puncture resistance and wear resistance of the cover plate needle teeth. Especially for fiber bundle pulling and impurity grinding conditions, it reduces the material consumption and maintenance cost of the cover plate needle teeth of the carding machine.

[0020] 2. This invention achieves multi-level protection for the cover plate needle teeth by installing buffer pads, reinforcing ribs, and a resisting elastomer structure. The reinforcing ribs provide rigid support, and the buffer pads provide flexible vibration absorption, while the resisting elastomer provides pre-bending resistance, thus constructing a multi-level stress protection system. This avoids the slight displacement of the needle teeth caused by vibration during high-speed combing, solves the problem of local stress concentration, peeling, or cracking of the alloy coating caused by the micro-movement of the needle teeth, improves the fatigue life and deformation resistance of the needle teeth under complex working conditions, and ensures the service life of the alloy coating.

[0021] 3. This invention achieves dynamic adjustment of the cover plate needle teeth by installing a stepper motor, connecting arm, displacement block and other structures. The visual sensor captures the change in the distance between the needle teeth and the cylinder in real time. The stepper motor drives the lead screw to finely adjust the position of the cover plate needle teeth, which solves the problem of the hidden decay of combing efficiency caused by the gradual wear of the alloy coating. Combined with real-time spacing monitoring and color metal layer alarm, it continuously compensates for the daily wear of the alloy coating and provides maintenance signals when the alloy coating is at its extreme wear.

[0022] 4. This invention, by installing structures such as abutment blocks, abutment rods, and extrusion blocks, converts the axial assembly action into radial clamping force of the extrusion blocks on both sides against the cover plate connector and the wedge block, forming a self-locking effect. This eliminates the micro-displacement that may occur in the wedge block under the high-frequency vibration of the carding machine, avoids the deviation of the working position of the needle teeth due to unstable connection, and ensures that the cover plate needle teeth are in the set position for a long time during high-speed carding, maintaining the consistency of fiber holding and carding. Attached Figure Description

[0023] Figure 1 This is a front view structural diagram of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the cover plate connector of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the wedge-shaped block and fixing column of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the resistance elastomer of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the cover plate frame structure of the present invention;

[0028] Figure 6 This is a cross-sectional view of the cover plate connector of the present invention;

[0029] Figure 7 This is a schematic cross-sectional view of the fixed column structure of the present invention;

[0030] Figure 8 This is a schematic cross-sectional view of the base plate structure of the present invention;

[0031] Figure 9 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0032] In the diagram: 1. Cover plate frame; 2. Cover plate connector; 3. Wedge block; 4. Fixing column; 5. Fixing circular plate; 6. Resistance elastomer; 7. Screw-in groove; 8. Wedge groove; 9. Arc groove one; 10. Airbag one; 11. Base plate; 12. Arc groove two; 13. Pop-out plate; 14. Return spring; 15. Extrusion block; 16. Abutting block; 17. Cam; 18. Rotating plate; 19. Drive shaft; 20. Cover plate pin teeth; 21. Connecting spring; 22. Inclined block; 23. Buffer pad; 24. Abutting rod; 25. Alloy plating; 26. Airbag two; 27. Ejection groove; 28. Ejection plate; 29. ​​Stepper motor; 30. Rotating lead screw; 31. Slider; 32. Connecting arm; 33. Displacement block; 34. Colored metal layer; 35. Sliding groove; 36. Reinforcing rib. Detailed Implementation

[0033] 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.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 9An embodiment of the present invention provides a wear-resistant carding machine movable cover plate based on chemical composite coating technology, comprising a cover plate frame 1 and a cover plate connector 2. The cover plate frame 1 has a cover plate connector 2 at its bottom. The bottom of the cover plate connector 2 is symmetrically and detachably connected to wedge blocks 3. Fixed posts 4 are symmetrically arranged on the outer wall of the wedge blocks 3. The outer wall of the fixed posts 4 is slidably connected to the cover plate connector 2. The side wall of the fixed posts 4 contacts a fixed circular plate 5. The outer wall of the fixed circular plate 5 is threadedly connected to the cover plate connector 2. A base plate 11 is fixedly connected to the bottom of the outer wall of the wedge blocks 3. Cover plate needle teeth 20 are arranged at the bottom of the base plate 11. The outer wall of the cover plate needle teeth 20 is provided with an alloy coating 25. The side of the fixed posts 4 away from the fixed circular plate 5 contacts a pop-out plate 13. A return spring 14 is fixedly connected to the wall. A push plate 28 is fixedly connected to the side wall of the return spring 14. A cover plate connector 2 is threadedly connected to the outer wall of the push plate 28. A screw-in groove 7 and a push-out groove 27 are opened on the side wall of the cover plate connector 2. A fixed circular plate 5 is threadedly connected to the outer wall of the screw-in groove 7. A push plate 28 is threadedly connected to the outer wall of the push-out groove 27. An arc-shaped groove 9 is opened inside the cover plate connector 2. A fixed post 4 is slidably connected to the side wall of the arc-shaped groove 9. The screw-in groove 7 and the push-out groove 27 are respectively connected to the arc-shaped groove 9. A wedge-shaped groove 8 is symmetrically opened at the bottom of the cover plate connector 2. The wedge-shaped groove 8 is fitted onto the outer wall of the wedge-shaped block 3. An arc-shaped groove 12 is symmetrically opened on the outer wall of the wedge-shaped block 3. A fixed post 4 is slidably connected to the side wall of the arc-shaped groove 12.

[0037] Furthermore, the cover plate skeleton 1 of the movable cover plate is mounted on the curved tracks on both sides of the carding machine at both ends, and is connected by chains to form a closed annular cover plate curtain, which makes a continuous closed rotational movement along the curved tracks at a slow speed of tens to hundreds of millimeters per minute; each cover plate skeleton 1 and cover plate connector 2 has two wedge-shaped blocks 3 installed at the bottom, which cover the cylinder of the carding machine to form a carding zone. The cylinder is existing technology, so it will not be described in detail; the cylinder brings the fibers into the carding zone, and the cover plate needles 20 on the bottom plate 11 of the wedge-shaped block 3 and the cylinder needles simultaneously grasp, tear and comb the fibers. The fibers are repeatedly gripped, combed, and transferred between the cover plate needles 20 and the cylinder. The nickel-phosphorus alloy is used as the main coating material, and an alloy coating 25 is plated on the cover plate needles 20. Micron-sized insoluble third hard particles, such as diamond, are added to the alloy coating 25. The micron-sized hard particles reach 4-6 layers, which improves the wear resistance. During use, the micron-sized hard particles in the surface layer of the alloy coating 25 resist external friction. After the micron-sized hard particles in the surface layer of the alloy coating 25 are peeled off, the micron-sized hard particles in the next layer resist external friction again, extending the service life of the cover plate needles 20.

[0038] When the fibers are introduced into the combing zone, they are bundled, tangled, and contain many impurities. The cover plate needles 20 require enormous piercing force to grasp and break down the fibers, while also resisting the grinding of impurities such as cotton knots and seed husks. Therefore, the cover plate needles 20 on the bottom plate 11 of the cover plate connector 2, which is in the front position (inlet section), are subjected to the pulling of fibers and friction from impurities, resulting in the most severe wear on its alloy plating 25. In contrast, the cover plate needles 20 on the bottom plate 11 of the wedge block 3, which is in the rear position (outlet section), smoothly transfer the fully combed fibers to the cylinder, preparing them for feeding into the next movable cover plate. Here, most of the fibers are already in single strands. Furthermore, the relatively straight fibers experience minimal abrasive wear and fatigue spalling of the alloy coating 25 due to prolonged sliding across the side of the cover plate needle teeth 20. Compared to the inlet section, the outlet section exhibits lower wear. The fibers released from the outlet end of the previous movable cover plate by the cover plate needle teeth 20 are not immediately and completely caught by the inlet end of the next movable cover plate by the cover plate needle teeth 20. The cylinder carries and mixes these fibers, so the inlet end of the next cover plate often captures a mixture of old and new fibers brought in by the cylinder, still containing a large number of incompletely decomposed fiber bundles. The inlet section of the next movable cover plate then faces fibers that have been processed by the previous cover plate but are still not completely monolithic. The fibrous fibers remain in a high-wear zone; the alloy plating 25 on the outer surface of the cover plate needles 20 at the inlet section of all movable cover plates on the same carding machine is the most severely worn area. Therefore, when the alloy plating 25 at the inlet section is completely worn and the cover plate needles 20 need to be replaced, only the wedge block 3, bottom plate 11, and cover plate needles 20 at the inlet section need to be replaced, while the wedge block 3, bottom plate 11, and cover plate needles 20 at the outlet section are retained. This can restore 80% of the carding efficiency of the carding machine without replacing the entire movable cover plate needles 20, thereby reducing the waste of needle material and avoiding the problems caused by the inlet section being worn out in the traditional mode. The structural waste of discarding the remaining intact cover plate needles 20 due to damage to the cover plate needles 20 in the section has been eliminated. This ensures that the cover plate needles 20 in both the inlet and outlet sections of the entire movable cover plate reach their theoretical maximum service life, significantly reducing the maintenance cost of the carding machine. On the movable cover plate, the cover plate needles 20 in the inlet section bear more than 80% of the impact and wear from impurities. When the alloy coating 25 of the cover plate needles 20 in the inlet section is exhausted, the coating in the outlet section often still has 50%-70% of its remaining lifespan. This avoids the forced scrapping of the high-value alloy coating 25 of the cover plate needles 20 in the outlet section due to the replacement of the entire movable cover plate.

[0039] When the alloy plating 25 on the cover plate pin teeth 20 at the bottom of the wedge block 3 and the base plate 11 is excessively worn, and the wedge block 3, the base plate 11, and the cover plate pin teeth 20 need to be replaced, use a tool to rotate the fixing round plate 5 on the side wall of the cover plate connector 2. This will unscrew the two fixing round plates 5 at the corresponding positions of the wedge block 3 to be replaced from the screw-in groove 7. The fixing round plates 5 will no longer be in contact with the fixing post 4. The return spring 14 will release its elastic potential energy, and the return spring 14 will drive the ejector plate 13. The ejector plate 13 will drive the fixing post 4, thus ejecting the fixing post 4. If the fixing post 4 is stuck in the cover plate connector 2 and cannot be ejected, use a tool to rotate the ejector plate 28 of the cover plate connector 2. The ejector plate 28 will move towards the ejector plate 13 within the ejector groove 27. The ejector plate 28 will further compress the return spring 14. When the return spring 14 is compressed to its limit, the ejector plate 28 will move further, applying pressure to the fixing post 4 through the ejector plate 13 and the return spring 14, thus releasing the pressure. The jammed state of the fixed post 4 allows the return spring 14 to release its elastic potential energy, popping the fixed post 4 out of the cover plate connector 2 and vertically separating the wedge block 3 from the cover plate connector 2, thus achieving disassembly. The new wedge block 3, base plate 11, and cover plate pin teeth 20 are then installed in front of the cover plate connector 2. The ejector plate 28 is rotated to reset, causing the return spring 14 and ejector plate 13 to reset. The two disassembled fixed posts 4 are then reinserted into the screw-in groove 7. The fixed post 4 gradually moves to the arc-shaped groove 9 inside the cover plate connector 2 and the arc-shaped groove 12 on the wedge block 3. After the fixed post 4 is fully inserted into the cover plate connector 2, the fixed circular plate 5 is screwed into the screw-in groove 7. The fixed circular plate 5 drives the fixed post 4. After the fixed post 4 contacts the ejector plate 13, the return spring 14 is gradually compressed. By inserting the fixed post 4 into the arc-shaped groove 9 and the arc-shaped groove 12, the wedge block 3 is fixed to the cover plate connector 2.

[0040] Please see Figure 4 , Figure 6 and Figure 8 An embodiment of the present invention provides: a wear-resistant carding machine movable cover plate based on chemical composite coating technology, wherein a cover plate frame 1 is provided with a cover plate connector 2 at the bottom, and wedge blocks 3 are symmetrically and detachably connected to the bottom of the cover plate connector 2. A base plate 11 is fixedly connected to the bottom of the outer wall of the wedge blocks 3. A cover plate needle tooth 20 is provided at the bottom of the base plate 11. An alloy coating 25 is provided on the outer wall of the cover plate needle tooth 20. A buffer pad 23 is provided at the contact position between the bottom of the outer wall of the base plate 11 and the outer wall of the cover plate needle tooth 20. A reinforcing rib 36 is fixedly connected to the outer wall of the cover plate needle tooth 20. The base plate 11 is fixedly connected to the outer wall of the reinforcing rib 36. An anti-elastic body 6 is fixedly connected to the bottom of the outer wall of the buffer pad 23. The anti-elastic body 6 and the buffer pad 23 are fixedly fitted on the outer wall of the cover plate needle tooth 20.

[0041] Furthermore, the reinforcing rib 36 is made of stainless steel and extends radially from the center of the cover plate needle teeth 20 to the surrounding area. It is located in the area where the outer wall of the cover plate needle teeth 20 connects with the base plate 11, thereby increasing the contact area between the cover plate needle teeth 20 and the base plate 11 and enhancing the structural stability of the connection. Under high-speed combing and frequent start-stop conditions, the increased contact surface of the reinforcing rib 36 enhances the friction and interlocking effect of the mating surface, reduces the slight displacement of the cover plate needle teeth 20 caused by vibration, maintains the precise positioning of the cover plate needle teeth 20, and ensures uniform stress on the alloy plating layer 25 on the cover plate needle teeth 20 when facing fiber friction, avoiding damage to the alloy plating layer 25 due to slight displacement of the cover plate needle teeth 20. Uneven local stress can lead to early wear, peeling, or cracking, thus extending the service life of the alloy coating 25. This ensures the uniformity and stability of fiber combing during the carding process, avoids fluctuations in combing quality caused by minute displacements, and improves the operational stability and fiber processing effect of the carding machine. Furthermore, continuous operation of the carding machine causes the cover plate teeth 20 to heat up. The reinforcing ribs 36 expand the heat conduction channel between the cover plate teeth 20 and the bottom plate 11, improving the cooling efficiency of the cover plate teeth 20. This prevents stress concentration between the cover plate teeth 20 and the alloy coating 25 due to their different coefficients of thermal expansion, preventing delamination or cracking of the alloy coating 25, and further ensuring the structural integrity of the cover plate teeth 20. The improved performance effectively extends the service life of the entire movable cover plate assembly, reducing the maintenance cost and downtime frequency of the carding machine. The buffer pad 23 is positioned at the contact point between the bottom interface of the base plate 11 and the outer wall of the cover plate teeth 20. The elasticity of the buffer pad 23 can attenuate the impact of fiber bundles and impurities on the cover plate teeth 20, as well as the periodic vibration caused by the high-speed rotation of the cylinder, reducing the impact of instantaneous overload on the cover plate teeth 20. The presence of the buffer pad 23 also effectively isolates the direct rigid contact between the bottom interface of the base plate 11 and the cover plate teeth 20, avoiding surface wear caused by hard contact. The buffer pad 23 effectively absorbs the impact load of fibers on the cover plate teeth 20 during carding. The stress wave amplitude is reduced, preventing microcracks or interface peeling of the alloy coating 25 under alternating loads. The buffer pad 23 diffuses the concentrated force to a larger area through its own compression deformation, reducing the contact peak pressure and achieving pressure equalization. The buffer pad 23 and the reinforcing rib 36 form a combination structure of rigid support and flexible buffer. While controlling the overall deformation of the cover plate needle teeth 20, it suppresses stress concentration and can evenly distribute the lateral and longitudinal forces borne by the cover plate needle teeth 20 during operation to the bottom plate 11, avoiding local stress concentration that could cause the cover plate needle teeth 20 to break. This ensures that the cover plate needle teeth 20 maintains a stable shape and position during the carding process, improving the consistency and stability of the carding effect.

[0042] The centers of the upper and lower opening slots of the resist elastomer 6 are not on the same vertical line. The center of the upper opening slot coincides with the center of the resist elastomer 6, while the center of the lower opening slot is offset from the center of the resist elastomer 6. Since the top of the resist elastomer 6 is connected to the buffer pad 23, when the cover plate needle 20 passes through the upper and lower opening slots of the resist elastomer 6, the resist elastomer 6 will deform, thereby applying a pre-bending force to the cover plate needle 20. The pre-bending force is opposite to the working force direction of the cover plate needle 20. When the fiber bundle is subjected to impact and tension, the working load and the pre-bending force cancel each other out, greatly reducing the actual elastic deformation amplitude of the cover plate needle 20, thus stabilizing it in the designed working position. The reduced stress fluctuation range decreases fatigue damage to the metal material, improves the fatigue life of the cover plate teeth 20, resists the pre-bending resistance of the elastomer 6, reduces the deformation of the cover plate teeth 20, and suppresses the alternating shear stress generated at the interface between the alloy coating 25 and the cover plate teeth 20 due to repeated bending of the cover plate teeth 20. This protects the bonding interface, ensures the stability of the cover plate teeth 20 posture, and guarantees the constant contact area and pressure distribution between the alloy coating 25 and the fiber. It also avoids abnormal concentrated wear caused by vibration or local deformation of the cover plate teeth 20, and extends the effective working cycle. In addition, the stability of the position of the cover plate teeth 20 ensures the consistency of the carding spacing and guarantees the quality of fiber carding.

[0043] Please see Figure 1 and Figure 5 An embodiment of the present invention provides: a wear-resistant carding machine movable cover plate based on chemical composite coating technology, wherein a displacement block 33 is fixedly connected to the top of the cover plate connecting body 2, a connecting arm 32 is symmetrically arranged on the top of the displacement block 33, a slider 31 is arranged on the side of the connecting arm 32 away from the displacement block 33, the slider 31 is movably fitted on the outer wall of the rotating screw 30, the rotating screw 30 is movably installed on the side wall of the stepper motor 29, the stepper motor 29 is fixedly installed in the cover plate frame 1, the stepper motor 29 is connected to a vision sensor through a signal line, the vision sensor is arranged on one side of the cover plate frame 1 and the cover plate connecting body 2, and a color-developing metal layer 34 is arranged between the bottom of the cover plate needle teeth 20 and the alloy coating 25.

[0044] Furthermore, after the alloy plating 25 on the cover plate needle teeth 20 is worn, the distance between the alloy plating 25 on the cover plate needle teeth 20 and the cylinder changes at the micrometer level. The vision sensor captures the change in the distance between the cover plate needle teeth 20 and the cylinder in real time. The vision sensor can be a high-resolution linear CCD camera or a laser triangulation rangefinder. The field of view of the vision sensor is perpendicular to the line connecting the contact point between the cover plate needle teeth 20 and the cylinder, and the field of view covers the working area of ​​the tip of the cover plate needle teeth 20. When the distance is detected to exceed the preset micrometer-level threshold, the vision sensor immediately sends an adjustment signal to the stepper motor 29. Upon receiving a signal, stepper motor 29 drives lead screw 30 to rotate. Lead screw 30 then moves slider 31 axially along lead screw 30. Slider 31, via connecting arm 32, drives displacement block 33, which in turn drives cover plate connector 2, thereby fine-tuning the position of cover plate connector 2. This precisely compensates for spacing deviations caused by wear of alloy plating 25, ensuring the combing spacing remains stable within the design range. Simultaneously, when alloy plating 25 wears down to expose color-developing metal layer 34, the different colors of color-developing metal layer 34 and alloy plating 25 create a clear visual identifier, indicating the working area of ​​cover plate needle teeth 20. A color sensor or vision inspection system is installed nearby. When the sensor detects that the color of the preset area changes from the normal color of the alloy plating layer 25 to the alarm-indicating color-developing metal layer 34, it can be determined that the alloy plating layer 25 has worn to a critical point, reminding operators to perform timely maintenance or replacement. This effectively avoids a decline in combing quality or equipment damage caused by excessive plating wear. The color-developing metal layer 34 is made of copper alloy or similar materials that have a significant contrast with the alloy plating layer 25. Its color is bright and stable, and it is not easily faded by environmental factors, ensuring the reliability of color recognition. At the same time, the thickness of the color-developing metal layer 34 is 3-5 micrometers, avoiding... It avoids occupying the thickness space of the alloy coating 25 and ensures that the alloy coating 25 is exposed just when it wears down to the critical thickness. The shutdown maintenance when the alloy coating 25 is completely worn down and the dynamic adjustment of the cover plate needle teeth 20 caused by slight wear of the alloy coating 25 work together to effectively balance the continuity of equipment operation and the timeliness of maintenance. It solves the problem that the wear of the alloy coating 25 and the increased spacing weaken the gripping and combing effect of the cover plate needle teeth 20 on the fibers, resulting in a significant reduction in the removal rate of cotton knots, short fibers and impurities. It also reduces quality problems such as uneven fiber combing and increased cotton knots caused by excessive wear of the cover plate needle teeth 20.

[0045] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7One embodiment of the present invention provides a wear-resistant carding machine movable cover plate based on chemical composite coating technology. The cover plate frame 1 has a cover plate connector 2 at its bottom, and wedge-shaped blocks 3 are symmetrically and detachably connected to the bottom of the cover plate connector 2. The bottom of the base plate 11 has cover plate needle teeth 20. An abutment block 16 is slidably connected to the inner wall of the fixing column 4. The side wall of the abutment block 16 contacts the fixing circular plate 5, and the side of the abutment block 16 away from the fixing circular plate 5 contacts the abutment rod 24. The outer wall of the abutment rod 24 has symmetrically formed sliding grooves 35. The abutment rod 24 is located away from the abutment block 16. A fixed column 4 is connected to one side of the 6 via a connecting spring 21. A pressing block 15 is slidably connected to the inner wall of the fixed column 4. An inclined block 22 is fixedly connected to the side wall of the pressing block 15. A sliding groove 35 is slidably connected to the side wall of the inclined block 22. The side of the pressing block 15 away from the inclined block 22 is in contact with the cover plate connecting body 2. A return spring 14 is fixedly connected to the side wall of the ejector plate 13. An ejector plate 28 is fixedly connected to the side wall of the return spring 14. A rotating plate 18 is symmetrically arranged on the cover plate connecting body 2. A cam 17 is connected to the side wall of the rotating plate 18 via a transmission shaft 19.

[0046] Furthermore, during the installation of the fixed wedge block 3, after the fixed post 4 is reinserted into the cover plate connector 2, and the abutment block 16 is inserted into the fixed post 4, the fixed circular plate 5 is reinstalled on the cover plate connector 2. The fixed circular plate 5 drives the abutment block 16, which in turn drives the abutment rod 24 to compress the connecting spring 21, thereby driving the fixed post 4. The abutment block 16 drives one end of the sliding groove 35, which moves along the inclined surface of the inclined block 22. The sliding groove 35 drives the inclined block 22 to move, thereby causing the inclined block 22 to drive the pressing block 15 away from the abutment. The contact rod 24 moves in a certain direction, causing the two symmetrical rows of extrusion blocks 15 on the fixed column 4 to contact the cover plate connector 2 and the wedge block 3 respectively. This allows the extrusion blocks 15 to further compress the wedge block 3, increasing the stability of the connection between the cover plate connector 2 and the wedge block 3. This prevents the wedge block 3 from loosening or shifting during high-speed operation of the carding machine, ensuring that the cover plate needles 20 always maintain a precise working position, effectively maintaining stable fiber gripping and carding effects, and preventing damage to the cover plate connector 2 due to... Repeated disassembly and reassembly of the wedge block 3 or the fixing post 4 can cause gaps between the wedge block 3 or the fixing post 4 and the cover plate connector 2, resulting in unstable connection between the cover plate connector 2 and the wedge block 3. If, during the disassembly of the wedge block 3, the pressing block 15 compresses the wedge block 3 or the cover plate connector 2, preventing the fixing post 4 from ejecting, rotating the ejector plate 28 will drive the return spring 14 and the ejector plate 13, causing the ejector plate 13 to further contact the fixing post 4, thus ejecting the fixing post 4. After the fixing post 4 is removed from the cover plate connector 2, pressing the pressing block 15 will cause the pressing block 15 to contact the fixing post 4 further. The contact rod 24 is reset; in addition, when the wedge block 3 cannot be separated from the cover plate connector 2 after the fixed post 4 is removed, the rotating plate 18 is rotated using a tool. The rotating plate 18 drives the transmission shaft 19 to rotate, and the transmission shaft 19 drives the cam 17 to rotate, so that the contour surface of the cam 17 at the position farthest from the transmission shaft 19 gradually faces the wedge block 3, so that the cam 17 gradually applies downward pressure to the wedge block 3, pushing the wedge block 3 out, and realizing the separation of the wedge block 3 from the cover plate connector 2. When installing the wedge block 3, the cam 17 is reset by rotating the plate 18.

[0047] Please see Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 9An embodiment of the present invention provides: a wear-resistant carding machine movable cover plate based on chemical composite coating technology, wherein a cover plate frame 1 is provided with a cover plate connector 2 at the bottom, and wedge blocks 3 are symmetrically and detachably connected to the bottom of the cover plate connector 2. An abutment block 16 is slidably connected to the inner wall of the fixed column 4. The side wall of the abutment block 16 contacts the fixed circular plate 5. The side of the abutment block 16 away from the fixed circular plate 5 contacts the abutment rod 24. The outer wall of the abutment rod 24 is symmetrically provided with sliding grooves 35. An inclined block 22 is fixedly connected to the side wall of the squeezing block 15. An airbag 10 is equidistantly arranged on the arc-shaped groove 9. The interior of the airbag 10 communicates with the interior of the airbag 26. The airbag 26 is fixedly installed in the airbag 10. The airbag 26 contacts the bottom plate 11. The airbag 10 contacts the squeezing block 15. The bottom of the cover plate connector 2 is symmetrically provided with wedge grooves 8.

[0048] Furthermore, during the installation of the wedge block 3 on the cover plate connector 2, the fixing post 4 is inserted into the cover plate connector 2. The fixing circular plate 5 drives the contact block 16 and the fixing post 4. The contact block 16 drives the contact rod 24. The contact rod 24 drives the inclined block 22 and the pressing block 15, causing the pressing block 15 to move closer to the cover plate connector 2. While the pressing block 15 is pressing the cover plate connector 2, it also comes into contact with the first airbag 10, thereby squeezing the first airbag 10 and forcing the gas inside the first airbag 10 into the second airbag 26, thus causing the second airbag 26 to inflate. After the second airbag 26 inflates, it contacts the bottom plate. The 11 phases are in contact, thus achieving a seal and preventing external impurities from entering the wedge groove 8 through the gap between the base plate 11 and the cover plate connector 2, which would cause corrosion of the wedge groove 8. This ensures that the wedge block 3 and the inner wall of the wedge groove 8 are tightly fitted, preventing the gap between the wedge block 3 and the wedge groove 8 from widening, and ensuring the connection between the cover plate connector 2 and the wedge block 3. The expansion of the airbag 26 can also provide elastic support for the base plate 11, buffering the vibration generated during operation, reducing the hard friction between the wedge block 3 and the wedge groove 8, further extending the service life of the components, and reducing equipment maintenance costs.

[0049] Working principle: The vision sensor captures the distance between the cover plate needle teeth 20 and the cylinder in real time. When the distance exceeds the preset micron threshold, the vision sensor starts the stepper motor 29. The stepper motor 29 drives the rotating lead screw 30, slider 31, connecting arm 32, displacement block 33, and cover plate connector 2. The cover plate connector 2 drives the wedge block 3, base plate 11, and cover plate needle teeth 20 to compensate for the distance deviation caused by the wear of the alloy coating 25.

[0050] When the alloy plating 25 wears down to the point that the colored metal layer 34 is exposed, a color sensor or visual inspection system installed near the working area of ​​the cover plate needle 20 detects that the normal color of the alloy plating 25 has changed to the alarm color of the colored metal layer 34, reminding the operator to perform maintenance or replacement in time.

[0051] When replacing the wedge block 3, use a tool to rotate and unscrew the fixed circular plate 5 from the screw-in groove 7. The fixed circular plate 5 will no longer be in contact with the fixed post 4. The return spring 14 will drive the ejector plate 13 and the fixed post 4 to eject the fixed post 4. If the fixed post 4 cannot be ejected, use a tool to rotate the ejector plate 28, so that the ejector plate 28 drives the return spring 14 and the ejector plate 28 to apply pressure to the fixed post 4 and eject the fixed post 4. Then, the fixed post 4 will be pulled out from the cover plate connector 2. Then, the wedge block 3 and the cover plate connector 2 will be separated vertically to achieve disassembly.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A wear-resistant movable cover plate for a carding machine based on chemical composite coating technology, characterized in that: The cover plate includes a cover plate frame (1) and a cover plate connector (2). The cover plate frame (1) is provided with a cover plate connector (2) at its bottom. The cover plate connector (2) is symmetrically and detachably connected to a wedge block (3) at its bottom. The outer wall of the wedge block (3) is symmetrically provided with a fixing column (4). The outer wall of the fixing column (4) is slidably connected to the cover plate connector (2). The side wall of the fixing column (4) is in contact with a fixing circular plate (5). The outer wall of the fixing circular plate (5) is connected to the cover plate connector (2) by a thread. The bottom of the outer wall of the wedge block (3) is fixedly connected to a base plate (11). The bottom of the base plate (11) is provided with cover plate pin teeth (20). The outer wall of the cover plate pin teeth (20) is provided with an alloy plating layer (25).

2. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 1, characterized in that: A buffer pad (23) is provided at the contact position between the bottom of the outer wall of the base plate (11) and the outer wall of the cover plate needle tooth (20). A reinforcing rib (36) is fixedly connected to the outer wall of the cover plate needle tooth (20). The base plate (11) is fixedly connected to the outer wall of the reinforcing rib (36). A resisting elastomer (6) is fixedly connected to the bottom of the outer wall of the buffer pad (23). The resisting elastomer (6) and the buffer pad (23) are fixedly fitted on the outer wall of the cover plate needle tooth (20).

3. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 1, characterized in that: The top of the cover plate connector (2) is fixedly connected to a displacement block (33). A connecting arm (32) is symmetrically arranged on the top of the displacement block (33). A slider (31) is arranged on the side of the connecting arm (32) away from the displacement block (33). The slider (31) is movably fitted on the outer wall of the rotating screw (30). The rotating screw (30) is movably installed on the side wall of the stepper motor (29). The stepper motor (29) is fixedly installed inside the cover plate frame (1). The stepper motor (29) is connected to a vision sensor through a signal line. The vision sensor is set on one side of the cover plate frame (1) and the cover plate connector (2). A color-developing metal layer (34) is provided between the bottom of the cover plate needle tooth (20) and the alloy plating layer (25).

4. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 1, characterized in that: The inner wall of the fixed column (4) is slidably connected to an abutment block (16). The side wall of the abutment block (16) is in contact with the fixed circular plate (5). The side of the abutment block (16) away from the fixed circular plate (5) is in contact with an abutment rod (24). The outer wall of the abutment rod (24) is symmetrically provided with sliding grooves (35). The side of the abutment rod (24) away from the abutment block (16) is connected to the fixed column (4) through a connecting spring (21). The inner wall of the fixed column (4) is slidably connected to an extrusion block (15). The side wall of the extrusion block (15) is fixedly connected to an inclined block (22). The side wall of the inclined block (22) is slidably connected to a sliding groove (35). The side of the extrusion block (15) away from the inclined block (22) is in contact with the cover plate connector (2).

5. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 4, characterized in that: The side of the fixed column (4) away from the fixed circular plate (5) is in contact with the pop-out plate (13). A reset spring (14) is fixedly connected to the side wall of the pop-out plate (13). An ejector plate (28) is fixedly connected to the side wall of the reset spring (14). A cover plate connector (2) is threadedly connected to the outer wall of the ejector plate (28).

6. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 5, characterized in that: The cover plate connector (2) has a screw-in groove (7) and an ejection groove (27) on its side wall. The outer wall of the screw-in groove (7) is connected to a fixed circular plate (5) by a thread, and the outer wall of the ejection groove (27) is connected to an ejection plate (28) by a thread.

7. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 6, characterized in that: The cover plate connector (2) has an arc-shaped groove (9) inside. The side wall of the arc-shaped groove (9) is slidably connected to a fixed column (4). The screw-in groove (7) and the ejection groove (27) are respectively connected to the arc-shaped groove (9).

8. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 6, characterized in that: The bottom of the cover plate connector (2) is symmetrically provided with wedge-shaped grooves (8), which are fitted onto the outer wall of the wedge block (3). The outer wall of the wedge block (3) is symmetrically provided with arc-shaped grooves (12), and the side wall of the arc-shaped grooves (12) is slidably connected with fixed columns (4).

9. The wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 1, characterized in that: A rotating plate (18) is symmetrically arranged on the cover plate connector (2), and a cam (17) is connected to the side wall of the rotating plate (18) through a transmission shaft (19).

10. A wear-resistant carding machine movable cover plate based on chemical composite coating technology according to claim 7, characterized in that: Airbag 1 (10) is equidistantly arranged on the arc-shaped groove 1 (9). The interior of airbag 1 (10) is connected to the interior of airbag 2 (26). Airbag 2 (26) is fixedly installed inside airbag 1 (10). Airbag 2 (26) is in contact with the bottom plate (11). Airbag 1 (10) is in contact with the extrusion block (15).

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