Coating and softening integrated device for production of raffia straw paper

Abstract

The invention relates to the related technical field of raffia production, and discloses a coating and softening integrated device for raffia paper production, the coating and softening integrated device comprises a mounting support frame, a right side adjusting assembly and a left end adjusting assembly are fixedly mounted on the mounting support frame, and a roller assembly is arranged between the right side adjusting assembly and the left end adjusting assembly; an oil box assembly is arranged below the roller assembly; the roller assembly comprises an upper-layer extrusion roller and a middle-layer extrusion roller, and a coating assembly is arranged below the middle-layer extrusion roller; by optimizing the structure of the magnetic suction sponge sleeve of the coating assembly, the magnetic suction sponge sleeve is in close fit contact with the middle-layer extrusion roller due to the material characteristics of high elasticity and high oil absorbency, and compared with rigid transmission of a traditional common sponge or hard roller, the magnetic suction sponge sleeve can adaptively deform along with the surface of the roller; it is ensured that the oil liquid is continuously and evenly conveyed from the coating assembly to the roller to the paper, and insufficient contact of traditional equipment is thoroughly avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of raffia production, and more specifically, relates to an integrated coating and softening device for raffia paper production. Background Technology

[0002] In the production of raffia paper, coating and softening is a core process that determines the paper's flexibility, surface texture, and suitability for subsequent processing. Its core requirement is to soften the paper and prevent surface damage by uniformly coating the paper surface with a specific oil. However, existing coating and softening equipment faces significant technical bottlenecks in practical applications.

[0003] Traditional coating equipment often uses ordinary sponges or rigid rollers. Ordinary sponges have poor elasticity and uneven pore distribution, which can easily lead to local collapse or insufficient adhesion when in contact with the extrusion roller, resulting in large fluctuations in oil absorption and an inability to form a continuous and uniform oil film. Rigid rollers, on the other hand, have high rigidity and make line contact rather than surface contact with the paper and extrusion roller. During the oil transfer process, phenomena such as "point adhesion" and "strip-like missed coating" are likely to occur, ultimately causing quality defects such as localized oiliness and stickiness, and localized dryness and brittleness on the surface of the raffia paper. This seriously affects the pass rate of subsequent printing, cutting, weaving and other processing stages.

[0004] Meanwhile, the structural design of traditional coating components lacks adaptive adjustment capabilities. When faced with the production needs of raffia paper with different thicknesses and fiber densities, it cannot flexibly adjust the contact pressure and contact area with the extrusion rollers, further exacerbating the problem of uneven coating. In addition, ordinary sponge materials are prone to aging and damage, and paper dust and oil stains easily remain on the surface of rigid rollers. This not only requires frequent shutdowns for replacement or cleaning, but also leads to a continuous decline in coating accuracy due to component wear and tear, thus restricting the improvement of production efficiency.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided an integrated coating and softening device for raffia paper production, in order to achieve a more practical and valuable purpose. Summary of the Invention

[0006] This invention provides an integrated coating and softening device for raffia paper production, which overcomes the above-mentioned defects in the prior art.

[0007] The purpose and effectiveness of this invention, a coating and softening integrated device for raffia paper production, are achieved through the following specific technical means: An integrated coating and softening device for raffia paper production includes a mounting support frame on which a right-side adjustment component and a left-side adjustment component are fixedly mounted. A roller assembly is provided between the right-side adjustment component and the left-side adjustment component, and an oil box assembly is provided below the roller assembly. The roller assembly includes an upper extrusion roller and a middle extrusion roller. A coating assembly is provided below the middle extrusion roller, and an extrusion degreasing assembly is provided outside the coating assembly. The upper extrusion roller and the middle extrusion roller cooperate to form a softening coating on the paper. The coating assembly includes a magnetic sponge sleeve and a telescopic permanent magnet assembly. The magnetic sponge sleeve contacts the middle extrusion roller to apply oil to the middle extrusion roller. The extrusion degreasing assembly scrapes off excess oil adsorbed inside the magnetic sponge sleeve.

[0008] In a further technical solution, the right-side adjustment component includes a right-side upright plate with a U-shaped opening. A right upper mounting shaft block, a right middle mounting shaft block, and a right upper mounting shaft block are slidably installed in the U-shaped opening of the right-side upright plate from top to bottom. A central rotating shaft is fixedly installed on both outer sides of the U-shaped opening of the right-side upright plate.

[0009] A further technical solution is provided, wherein the left-end adjustment component includes a left-side upright plate with a U-shaped opening. A right upper-position corresponding shaft block, a right middle-position corresponding shaft block, and a right lower-position corresponding shaft block are slidably installed in the U-shaped opening of the left-side upright plate from top to bottom. A sprocket is provided on the outer side of each of the right upper-position corresponding shaft block, the right middle-position corresponding shaft block, and the right lower-position corresponding shaft block. The sprocket installed on the outer side of the right lower-position corresponding shaft block is provided with a driving component. A protective upright plate is also provided on the outer side of the left-side upright plate.

[0010] In a further technical solution, the roller assembly includes an upper extrusion roller and a middle extrusion roller. The upper extrusion roller is installed between the upper right mounting shaft block and the corresponding upper right shaft block. The middle extrusion roller is installed between the corresponding right middle shaft block and the right middle mounting shaft block. A coating component is provided between the lower right mounting shaft block and the corresponding lower right shaft block. Output shafts are provided at both ends of the upper extrusion roller, the middle extrusion roller, and the coating component. The output shafts achieve mechanical operation with the drive component through the sprocket.

[0011] A further technical solution includes a cleaning scraper assembly on the outside of the right adjustment assembly and the left adjustment assembly, a protective cover on the outside of the coating assembly, and a squeezing degreasing assembly on the outside of the coating assembly. The squeezing degreasing assembly is fixedly installed between the right adjustment assembly and the left adjustment assembly. The cleaning scraper assembly includes an angle adjuster, which is fixedly installed on the outside of the right upright plate. The output end of the angle adjuster is provided with a rotating shaft, and four sets of fixing blocks are fixedly installed on the rotating shaft. Rubber scrapers are fixedly installed on the outside of the four sets of fixing blocks. The rubber scrapers can be adjusted to contact the surfaces of the middle extrusion roller and the upper extrusion roller.

[0012] In a further technical solution, the coating assembly includes a magnetic sponge sleeve, a telescopic permanent magnet assembly is installed inside the magnetic sponge sleeve, a supporting filter steel mesh is provided inside the telescopic permanent magnet assembly, the telescopic permanent magnet assembly and the supporting filter steel mesh are arranged alternately, a supporting partition assembly is provided inside the telescopic permanent magnet assembly, and an oil guide and removal assembly is rotatably provided inside the supporting partition assembly.

[0013] In a further technical solution, the supporting partition assembly includes a rotating central shaft, and the surface of the rotating central shaft is arrayed with several sets of isolation support plates. Isolation grooves are provided between the several sets of isolation support plates. The oil guiding and removing assembly is rotatably installed in each of the isolation grooves. The oil guiding and removing assembly includes a central shaft rotating plate, and a through central shaft is provided on the inner side of the central shaft rotating plate. The through central shaft is installed in the rotating central shaft, and a cleaning ring frame is fixedly connected to the outer end of the central shaft rotating plate.

[0014] In a further technical solution, the telescopic permanent magnet assembly includes a sliding sleeve, the bottom of which is fixedly connected to the isolation support plate. A limiting rod is fixedly installed inside the sliding sleeve, and a limiting spring is fixedly installed outside the limiting rod. A sliding plate is fixedly installed at the top of the limiting spring, and an arc-shaped permanent magnet is fixedly connected to the sliding plate. The arc-shaped permanent magnet has multiple sets of oil filter ports on its surface.

[0015] In a further technical solution, the extrusion degreasing component includes an arc-shaped outer shell, an arc-shaped inner cavity on the inner side of the arc-shaped outer shell, an array of several sets of permanent magnets arranged in the arc-shaped inner cavity, and a number of wavy-shaped opening scraping grooves on the side of the arc-shaped outer shell close to the magnetic sponge sleeve.

[0016] In a further technical solution, the oil box assembly includes a lifting cylinder assembly, and an oil box is fixedly installed on the upper end of the lifting cylinder assembly, with the oil box positioned directly below the coating assembly.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention discloses an integrated coating and softening device for raffia paper production. By optimizing the magnetic sponge sleeve structure of the coating component, its highly elastic and oil-absorbent material properties form a close-fitting contact with the middle extrusion roller. Compared to the rigid transmission of traditional ordinary sponges or hard rollers, the magnetic sponge sleeve can adaptively deform with the roller surface, ensuring a continuous and uniform transfer of oil from the coating component to the roller and then to the paper. This completely avoids problems such as localized over-oiling and localized dryness of the paper caused by insufficient contact and uneven oil adhesion in traditional equipment. It significantly improves the surface consistency of raffia paper after coating and softening, laying a high-quality substrate foundation for subsequent processing.

[0018] This invention discloses an integrated coating and softening device for raffia paper production. Through the synchronized operation of permanent magnets within a telescopic permanent magnet assembly and an extrusion degreasing assembly, an intelligent dynamic oil control mechanism is established. The arc-shaped permanent magnets of the telescopic permanent magnet assembly achieve telescopic extrusion under the magnetic attraction of the permanent magnets. Combined with the gradient magnetic force distribution of the permanent magnets, this effectively removes excess oil from the magnetically attracted sponge sleeve while precisely retaining the appropriate amount of oil required for coating, avoiding oil waste or insufficient coating. Simultaneously, excess oil is dually recovered through an oil filter port and a corrugated open scraper groove, flowing back to the oil box for recycling. This not only reduces production consumable costs but also minimizes the environmental impact of oil discharge, achieving the dual benefits of environmental protection and energy conservation.

[0019] This invention discloses an integrated coating and softening device for raffia paper production. Through the coordinated operation of a telescopic permanent magnet component and an oil-guiding and removal component, it not only achieves oil recovery but also further enhances the self-cleaning capabilities of the components and the secondary utilization of oil. After the oil guided by the telescopic permanent magnet component flows into the isolation tank, the cleaning ring of the oil-guiding and removal component rotates synchronously with the coating component, scraping off residual oil at the bottom of the sliding sleeve and throwing it back to the magnetic sponge sleeve by centrifugal force, maximizing oil utilization. Simultaneously, the scraping action of the cleaning ring prevents oil from accumulating and deteriorating inside the components. Combined with the real-time cleaning of the roller surface by the cleaning scraper component, it reduces the interference of paper dust, oil stains, and other impurities on equipment operation, lowers component wear and the probability of failure, significantly extends the equipment's maintenance cycle and service life, and achieves a simultaneous improvement in production efficiency and equipment stability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 This is a schematic diagram of the overall front view of the present invention; Figure 3 This is a schematic diagram of the overall exploded structure of the present invention; Figure 4 This is a schematic diagram of the overall exploded side view of the present invention; Figure 5 This is a schematic diagram of the overall appearance structure of the roller assembly and coating assembly of the present invention; Figure 6This is a schematic diagram of the overall appearance structure of the coating component and the extrusion degreasing component of the present invention; Figure 7 This is a top-sectional view of the coating assembly and extrusion degreasing assembly of the present invention. Figure 8 This is a schematic side view of the overall structure of the coating assembly and the extrusion degreasing assembly of the present invention; Figure 9 This is a schematic side cross-sectional view of the coating assembly and extrusion degreasing assembly of the present invention; Figure 10 This is a front view of the overall exploded structure of the coating assembly of the present invention; Figure 11 This is a schematic diagram of the overall exploded appearance structure of the coating component of the present invention; Figure 12 For the present invention Figure 11 Enlarged structural diagram at point A; Figure 13 This is a schematic diagram of the overall side cross-section of the telescopic permanent magnet assembly of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Install the support frame; 2. Oil box assembly; 21. Lifting cylinder assembly; 22. Oil box; 3. Right side adjustment assembly; 31. Right side upright plate; 32. Central rotating shaft; 33. Upper right mounting shaft block; 34. Middle right mounting shaft block; 35. Lower right mounting shaft block; 4. Left end adjustment assembly; 41. Left side upright plate; 42. Upper right corresponding shaft block; 43. Sprocket; 44. Middle right corresponding shaft block; 45. Lower right corresponding shaft block; 46. Protective upright plate; 5. Drive components; 6. Roller assembly; 61. Upper extrusion roller; 62. Middle extrusion roller; 63. Protective cover; 7. Cleaning scraper assembly; 71. Angle adjuster; 72. Rotating shaft; 73. Fixing block; 74. Rubber scraper; 8. Coating assembly; 81. Magnetic sponge sleeve; 82. Telescopic permanent magnet assembly; 821. Arc-shaped permanent magnet; 822. Sliding sleeve; 823. Limiting pull rod; 824. Oil filter port; 825. Limiting spring; 83. Support filter steel mesh; 85. Support partition assembly; 851. Isolation support plate; 852. Rotating central shaft; 853. Isolation groove; 86. Oil guide and removal assembly; 861. Central shaft rotating plate; 862. Through central shaft; 863. Cleaning ring frame; 9. Extrusion degreasing component; 91. Arc-shaped outer shell; 92. Permanent magnet; 93. Arc-shaped inner cavity; 94. Wavy opening scraper groove. Detailed Implementation

[0024] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0025] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] As attached Figure 1 To be continued Figure 13 As shown: This invention provides an integrated coating and softening device for raffia paper production, comprising a mounting support frame 1. A right-side adjustment component 3 and a left-side adjustment component 4 are fixedly mounted on the mounting support frame 1. A roller assembly 6 is positioned between the right-side adjustment component 3 and the left-side adjustment component 4, and an oil box assembly 2 is positioned below the roller assembly 6. The mounting support frame 1 provides stable support for the entire device. It is integrally molded from a high-strength alloy material, exhibiting excellent load-bearing capacity and effectively preventing component displacement due to vibration during operation, thus ensuring the accuracy of the coating and softening process. The right-side adjustment component 3 and the left-side adjustment component 4 are symmetrically arranged, providing a stable installation reference for the roller assembly 6 and the coating component 8, while also facilitating subsequent position adjustments based on paper thickness and coating requirements. The oil box assembly 2 is positioned directly below the roller assembly 6, ensuring that the coating component 8 can fully contact the oil, providing a continuous oil supply for the coating operation.

[0028] The roller assembly 6 includes an upper extrusion roller 61 and a middle extrusion roller 62. A coating assembly 8 is located below the middle extrusion roller 62, and an extrusion degreasing assembly 9 is located on the outside of the coating assembly 8. The upper extrusion roller 61 and the middle extrusion roller 62 work together to form a softening coating on the paper. The upper extrusion roller 61 and the middle extrusion roller 62 are wrapped with wear-resistant silicone material, and the surface is precision polished to a roughness of ≤0.8μm. During the extrusion process, this ensures effective softening of the paper while avoiding scratches on the paper surface. The gap between the two can be flexibly adjusted by the right adjustment assembly 3 and the left adjustment assembly 4 to adapt to the production needs of different thicknesses of 0.1-0.5mm raffia paper. The close contact design between the coating assembly 8 and the middle extrusion roller 62 enables efficient transfer of oil from the coating assembly 8 to the roller and then to the paper. The extrusion degreasing assembly 9 can precisely control the oil content of the coating assembly 8, avoiding uneven coating caused by excessive oil.

[0029] The coating assembly 8 includes a magnetic sponge sleeve 81 and a telescopic permanent magnet assembly 82. The magnetic sponge sleeve 81 contacts the middle extrusion roller 62 to apply oil to the middle extrusion roller 62. The extrusion degreasing assembly 9 scrapes away excess oil adsorbed inside the magnetic sponge sleeve 81. The magnetic sponge sleeve 81 is made of highly elastic and highly oil-absorbent polyurethane sponge material with a porosity of over 85%, which can quickly absorb oil from the oil box assembly 2 and has good resilience. When it contacts the middle extrusion roller 62, it can form a uniform oil coating layer. The magnetic attraction between the telescopic permanent magnet assembly 82 and the extrusion degreasing assembly 9 achieves dynamic extrusion degreasing of the magnetic sponge sleeve 81. Compared with the traditional fixed oil scraping structure, its degreasing effect is more thorough, and the oil content of the magnetic sponge sleeve 81 can be controlled within the optimal range of 30-40%, effectively solving the problems of uneven coating and oil waste in traditional equipment.

[0030] Preferred options are shown in the appendix. Figure 3 The right-side adjustment assembly 3 includes a right-side upright plate 31 with a U-shaped opening. A right upper mounting shaft block 33, a right middle mounting shaft block 34, and a right lower mounting shaft block 35 are slidably installed from top to bottom within the U-shaped opening of the right-side upright plate 31. A central rotating shaft 32 is fixedly installed on both outer sides of the U-shaped opening of the right-side upright plate 31. The right-side upright plate 31 is welded from steel plate, and a precision guide rail is provided inside the U-shaped opening. The right upper mounting shaft block 33, right middle mounting shaft block 34, and right lower mounting shaft block 35 can slide smoothly along the guide rail with a sliding accuracy of ±0.02mm. The central rotating shaft 32 is connected to an external adjustment mechanism. By rotating the central rotating shaft 32, the lifting and lowering adjustment of each mounting shaft block can be achieved. This provides convenient operation and high adjustment accuracy, quickly adapting to the production needs of different paper specifications. Simultaneously, each mounting shaft block is equipped with rolling bearings, reducing frictional loss with the roller output shaft and extending the service life of the equipment.

[0031] Preferred options are shown in the appendix. Figure 3 The left-end adjustment component 4 includes a left-side upright plate 41 with a U-shaped opening. A right upper-side corresponding shaft block 42, a right middle-side corresponding shaft block 44, and a right lower-side corresponding shaft block 45 are slidably installed sequentially from top to bottom within the U-shaped opening of the left-side upright plate 41. A sprocket 43 is provided on the outer side of each of the three shaft blocks. A drive component 5 is provided on the sprocket 43 partially installed on the outer side of the right lower-side corresponding shaft block 45. A protective upright plate 46 is also provided on the outer side of the left-side upright plate 41. The structure is symmetrical with the right-side upright plate 31, ensuring the coaxiality of the roller assembly 6 and the coating assembly 8 after installation. The sprocket 43 is made of 45 steel and has been quenched, with a tooth surface precision of grade 6. It has high transmission efficiency when working with the chain of the drive component 5, with a transmission error of ≤1%. The drive component 5 uses a variable frequency motor, which can realize stepless adjustment of speed from 50-200 r / min to adapt to different production efficiency requirements. The protective upright plate 46 is made of transparent PC material, which can effectively prevent dust and oil from splashing out and make it easy for operators to observe the operating status of the equipment, improving the safety and convenience of operation.

[0032] Preferred options are shown in the appendix. Figure 3 The roller assembly 6 includes an upper extrusion roller 61 and a middle extrusion roller 62. The upper extrusion roller 61 is installed between the upper right mounting shaft block 33 and the corresponding upper right shaft block 42. The middle extrusion roller 62 is installed between the corresponding right middle shaft block 44 and the right middle mounting shaft block 34. A coating assembly 8 is provided between the lower right mounting shaft block 35 and the corresponding lower right shaft block 45. Output shafts are provided at both ends of the upper extrusion roller 61, the middle extrusion roller 62, and the coating assembly 8. The output shafts are mechanically operated by the drive component 5 through the sprocket 43. The upper extrusion roller 61, the middle extrusion roller 62, and the coating assembly 8 operate synchronously using the same drive source, ensuring the coordination of coating and extrusion actions and avoiding problems such as paper stretching and uneven coating caused by inconsistent rotation speeds. The output shafts and the sprocket 43 are connected by a key, which is secure and easy to disassemble, facilitating subsequent maintenance and replacement.

[0033] Preferred options are shown in the appendix. Figure 3 To be continued Figure 7The right-side adjusting component 3 and the left-side adjusting component 4 are provided with a cleaning scraper assembly 7 on their outer sides. The coating component 8 is provided with a protective cover 63 on its outer side. The coating component 8 is provided with a squeezing degreasing component 9 on its outer side. The squeezing degreasing component 9 is fixedly installed between the right-side adjusting component 3 and the left-side adjusting component 4. The cleaning scraper assembly 7 includes an angle adjuster 71, which is fixedly installed on the outer side of the right-side upright plate 31. The output end of the angle adjuster 71 is provided with a rotating shaft 72. Four sets of fixing blocks 73 are fixedly installed on the rotating shaft 72. Rubber scrapers 74 are fixedly installed on the outer side of the four sets of fixing blocks 73. The scraper 74 can be adjusted to contact the surfaces of the middle extrusion roller 62 and the upper extrusion roller 61. The cleaning scraper assembly 7 can remove residual paper dust and oil stains on the roller surface in real time, preventing their accumulation from affecting the coating effect. The angle adjuster 71 is manually adjustable with an adjustment range of 0-45°, which can flexibly adjust the contact angle and pressure of the rubber scraper 74 according to the cleanliness of the roller surface. The rubber scraper 74 is made of oil-resistant rubber with a Shore A hardness of 60-70, which ensures the cleaning effect without causing wear to the roller surface. The protective cover 63 can effectively prevent oil splashing during the coating process and keep the surrounding environment of the equipment clean.

[0034] Preferred options are shown in the appendix. Figure 8 To be continued Figure 12 The coating component 8 includes a magnetic sponge sleeve 81, with a telescopic permanent magnet component 82 installed inside the magnetic sponge sleeve 81. A supporting filter steel mesh 83 is provided inside the telescopic permanent magnet component 82. The telescopic permanent magnet component 82 and the supporting filter steel mesh 83 are arranged alternately. A supporting partition component 85 is provided inside the telescopic permanent magnet component 82, and an oil-guiding and removing component 86 is rotatably installed within the supporting partition component 85. The supporting filter steel mesh 83 is made of 304 stainless steel with a mesh diameter of 0.5mm. It can provide support for the magnetic sponge sleeve 81 and also filter impurities in the oil, preventing impurities from clogging the pores of the magnetic sponge sleeve 81 and affecting the oil absorption effect. The staggered arrangement of the telescopic permanent magnet component 82 and the supporting filter steel mesh 83 makes the magnetic sponge sleeve 81 more evenly stressed and the oil removal more thorough. The supporting partition component 85 divides the interior of the coating component 8 into multiple independent areas, which facilitates the drainage and recycling of oil. The rotating design of the oil guide and removal component 86 can further scrape off residual oil and improve the utilization rate of oil.

[0035] Preferred options are shown in the appendix. Figure 8 To be continued Figure 12The supporting partition assembly 85 includes a rotating central shaft 852. A plurality of isolation support plates 851 are arrayed on the surface of the rotating central shaft 852. Isolation grooves 853 are provided between the plurality of isolation support plates 851. The oil guiding and removing assembly 86 is rotatably installed within each isolation groove 853. The oil guiding and removing assembly 86 includes a central shaft rotating plate 861. A through-shaft central shaft 862 is provided inside the central shaft rotating plate 861. The through-shaft central shaft 862 is installed within the rotating central shaft 852. A fixed connection is provided at the outer end of the central shaft rotating plate 861. The cleaning ring frame 863 and the rotating central shaft 852 rotate synchronously with the coating component 8, driving the isolation support plate 851 and the oil removal component 86 to rotate together. The cleaning ring frame 863 is made of wear-resistant plastic material, and its outer edge is in close contact with the bottom of the sliding sleeve 822. During the rotation, it can effectively scrape off the residual oil at the bottom. The scraped oil is thrown into the magnetic sponge sleeve 81 for reuse under the action of centrifugal force, realizing the recycling of oil. The design of the isolation groove 853 avoids the accumulation of oil inside the component and ensures the normal operation of the oil removal component 86.

[0036] Preferred options are shown in the appendix. Figure 13 The telescopic permanent magnet assembly 82 includes a sliding sleeve 822. The bottom of the sliding sleeve 822 is fixedly connected to the isolation support plate 851. A limiting rod 823 is fixedly installed inside the sliding sleeve 822. A limiting spring 825 is fixedly installed on the outside of the limiting rod 823. A sliding plate is fixedly installed on the top of the limiting spring 825. An arc-shaped permanent magnet 821 is fixedly connected to the sliding plate. Multiple sets of oil filter ports 824 are provided on the arc-shaped permanent magnet 821. The limiting spring 825 is made of stainless steel. With a stable elastic coefficient, the arc-shaped permanent magnet 821 can be flexibly extended and retracted. When the coating component 8 rotates to the extrusion degreasing component 9, the arc-shaped permanent magnet 821 extends under magnetic attraction, extruding the magnetically attracted sponge sleeve 81 to remove oil. After leaving the extrusion area, it retracts under the reset action of the limit spring 825 to avoid affecting the oil absorption effect of the magnetically attracted sponge sleeve 81. The setting of the oil filter port 824 allows some oil to flow into the sliding sleeve 822, which lubricates the limit spring 825 and the sliding plate, reduces frictional loss, and extends the service life of the component.

[0037] Preferred options are shown in the appendix. Figure 9The extrusion degreasing component 9 includes an arc-shaped outer shell 91, with an arc-shaped inner cavity 93 on the inner side of the arc-shaped outer shell 91. Several sets of permanent magnets 92 are arrayed within the arc-shaped inner cavity 93. Several sets of wavy-shaped opening scraping grooves 94 are provided on the side of the arc-shaped outer shell 91 closest to the magnetic sponge sleeve 81. The permanent magnets 92 are made of neodymium iron boron strong magnetic material, with magnetic strength distributed in a 90-80-75 grade from bottom to top. This gradient magnetic design allows for progressive extrusion of the magnetic sponge sleeve 81. The lower strong magnetic area achieves deep degreasing, while the upper weak magnetic area retains a suitable amount of oil to ensure coating requirements. The wavy-shaped opening scraping grooves 94 increase the contact area with the magnetic sponge sleeve 81, resulting in a more thorough oil scraping effect. Simultaneously, the wavy structure guides excess oil to quickly flow into the arc-shaped inner cavity 93. An oil drain port is provided at the bottom of the arc-shaped inner cavity 93, facilitating oil return to the oil box component 2 for recycling. The oil recovery rate can reach over 95%, effectively reducing production costs.

[0038] Preferred options are shown in the appendix. Figure 3 The oil box assembly 2 includes a lifting cylinder assembly 21, with an oil box 22 fixedly installed at the upper end of the lifting cylinder assembly 21. The oil box 22 is located directly below the coating assembly 8. The lifting cylinder assembly 21 is pneumatically driven, with a lifting accuracy of ±0.1mm. The height of the oil box 22 can be flexibly adjusted according to the oil absorption of the magnetic sponge sleeve 81 to ensure that the magnetic sponge sleeve 81 can fully contact the oil while avoiding waste caused by excessive oil. The oil box 22 is made of stainless steel and welded together. It is equipped with a liquid level sensor inside to monitor the oil level in real time. When the oil level is low, it will issue an early warning to remind the operator to replenish the oil. The bottom of the oil box 22 is equipped with a drain port to facilitate the regular cleaning of sedimented impurities and maintain the cleanliness of the oil.

[0039] Specific usage of this invention: When using this device, first complete the equipment initialization preparation: add coating oil that meets production requirements into the oil box 22, using the "normal liquid level" detected by the liquid level sensor as the standard, to avoid excessive oil overflow or insufficient oil affecting the oil absorption effect. Then, start the lifting cylinder assembly 21 to drive the oil box 22 to rise smoothly until the oil is in full contact with the bottom of the magnetic sponge sleeve 81 of the coating assembly 8, ensuring that the magnetic sponge sleeve 81 can quickly absorb sufficient oil, thus reserving a stable oil source for subsequent coating operations.

[0040] Equipment Start-up Phase: Start drive component 5 and adjust the rotation speed according to the production efficiency requirements of raffia paper. Drive component 5 drives coating component 8, middle extrusion roller 62, and upper extrusion roller 61 to rotate synchronously via sprocket 43. The consistent rotation speed of the three components ensures coordinated coating and extrusion actions, avoiding paper stretching or uneven coating due to speed differences. At this time, the operator can adjust the fit clearance between the upper extrusion roller 61 and the middle extrusion roller 62 according to the thickness of the raffia paper to be processed by rotating the middle rotating shaft 32 of the right adjustment component 3 and the corresponding adjustment structure of the left adjustment component 4. This drives the relevant mounting shaft blocks to slide along the guide rail, thereby adjusting the clearance to match the paper thickness, ensuring both the extrusion softening effect and preventing paper damage.

[0041] The core coating and softening process: When the upper extrusion roller 61 and the middle extrusion roller 62 rotate synchronously at a set speed, the paper used for producing raffia is continuously fed between the two rollers. Simultaneously, the coating component 8 rotates synchronously with the drive system. Its outer magnetic sponge sleeve 81 continuously absorbs the oil from the oil box 22 during rotation. The magnetic sponge sleeve 81 is made of highly elastic polyurethane sponge, which maintains good resilience after absorbing the oil, allowing for better adhesion to the roller surface. When the magnetic sponge sleeve 81 rotates to the contact area with the middle extrusion roller 62, the rotational friction and contact pressure of the two components cause the magnetic sponge sleeve 81 to evenly transfer the absorbed oil to the surface of the middle extrusion roller 62. The roller surface is precisely treated to ensure uniform oil adhesion. Subsequently, during the extrusion process between the middle extrusion roller 62 and the upper extrusion roller 61, the surface oil layer is simultaneously coated onto both sides of the paper, achieving integrated coating and softening operations. This effectively solves the problem of uneven coating caused by the use of ordinary sponges or hard rollers in traditional equipment.

[0042] Dynamic oil control and oil recovery process: To accurately control the oil content of the magnetic sponge sleeve 81 and avoid excessive or insufficient oil affecting the coating effect, the core oil control mechanism is activated when the coating component 8 rotates to the area of ​​the extrusion degreasing component 9. The arc-shaped inner cavity 93 of the degreasing assembly 9 is arrayed with permanent magnets 92 of strong magnetic material, whose magnetic strength is distributed in a gradient from bottom to top, so as to achieve progressive extrusion of the magnetic sponge sleeve 81. In the telescopic permanent magnet assembly 82 inside the coating assembly 8, the arc-shaped permanent magnet 821 overcomes the elastic force of the limiting spring 825 under the magnetic attraction and extends outward along the limiting rod 823 inside the sliding sleeve 822, forming a magnetic attraction with the permanent magnet 92, thereby extruding the outer magnetic sponge sleeve 81; After the magnetic sponge sleeve 81 is subjected to progressive compression, the strong magnetic area at the bottom achieves deep oil removal, while the weak magnetic area at the top retains a suitable amount of oil to meet coating requirements. Excess oil is efficiently recovered through two paths: First, it flows into the sliding sleeve 822 through multiple oil filter ports 824 on the arc-shaped permanent magnet 821, which lubricates the limit spring 825 and the sliding plate, reducing frictional wear between components and extending the service life of the components. Subsequently, the oil flows along the bottom of the sliding sleeve 822 into the isolation groove 853 on the inner side of the isolation support plate 851. Second, it flows through the wavy opening scraper groove 94 on the arc-shaped outer shell 91. This structure can increase the contact area with the magnetic sponge sleeve 81, making the oil scraping more thorough. After the excess oil flows into the arc-shaped inner cavity 93, it flows back to the oil box 22 through the oil drain port at the bottom of the arc-shaped inner cavity 93, realizing the recycling of oil and reducing production costs. When the coating component 8 rotates away from the magnetic attraction area of ​​the extrusion degreasing component 9, the limiting spring 825 of the telescopic permanent magnet component 82 elastically resets, causing the arc-shaped permanent magnet 821 to retract, preventing it from continuously squeezing the magnetic sponge sleeve 81 and ensuring that the magnetic sponge sleeve 81 can normally absorb oil in the future.

[0043] Oil reuse and component cleaning process: During the continuous rotation of the coating component 8, the rotating shaft 852 of the supporting partition component 85 rotates synchronously, driving the oil removal component 86 in the isolation tank 853 to operate together. The cleaning ring 863 of the oil removal component 86 is made of wear-resistant material, and its outer edge is in close contact with the bottom of the sliding sleeve 822. Under the action of centrifugal force, it can effectively scrape off the residual oil at the bottom. The scraped oil is thrown into the magnetic sponge sleeve 81 to re-participate in the coating, further improving the oil utilization rate and avoiding waste. At the same time, the cleaning scraper component 7 is started, and the rubber scraper 74 is adjusted to a suitable angle by the angle adjuster 71, so that it is in close contact with the surface of the upper extrusion roller 61 and the middle extrusion roller 62, removing residual paper dust and oil stains on the roller surface in real time, avoiding the accumulation of impurities that affect the uniformity of the oil layer, and ensuring the coating quality of subsequent paper; the protective cover 63 on the outside of the coating component 8 can effectively prevent oil splashing, keep the surrounding environment of the equipment clean, and reduce the amount of subsequent cleaning work.

[0044] Continuous Operation Guarantee: Throughout the production process, the liquid level sensor inside the oil box 22 monitors the remaining oil level in real time. When the oil level is low, an early warning is issued, reminding operators to replenish oil through the filling port of the oil box 22, ensuring continuous operation. Regularly cleaning the settled impurities through the drain port at the bottom of the oil box 22 maintains oil cleanliness, preventing impurities from affecting the coating effect or damaging the components. To change to different paper sizes, the right-side adjustment component 3 and the left-side adjustment component 4 can be repeatedly adjusted to flexibly adjust the roller gap and adapt to diverse production needs. The entire workflow achieves integrated coating and softening, precise oil control, recycling, and component self-cleaning, resulting in highly efficient and coordinated operation, significantly improving the production quality and efficiency of raffia paper.

[0045] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An integrated coating and softening device for raffia paper production, characterized in that: The system includes a mounting support frame (1), on which a right-side adjustment component (3) and a left-side adjustment component (4) are fixedly mounted, and a roller assembly (6) is mounted between them. An oil box assembly (2) is disposed below the roller assembly (6). The roller assembly (6) includes an upper extrusion roller (61) and a middle extrusion roller (62). A coating assembly (8) is provided below the middle extrusion roller (62), and an extrusion degreasing assembly (9) is provided on the outside of the coating assembly (8). The upper extrusion roller (61) and the middle extrusion roller (62) work together to soften and coat the paper. The coating component (8) includes a magnetic sponge sleeve (81) and an inner telescopic permanent magnet component (82). The magnetic sponge sleeve (81) contacts the middle extrusion roller (62) and applies oil to it. The extrusion degreasing component (9) is used to scrape off excess oil from the magnetic sponge sleeve (81).

2. The apparatus according to claim 1, characterized in that: The right adjustment component (3) includes a right side upright plate (31) with a U-shaped opening. The upper right mounting shaft block (33), the middle right mounting shaft block (34) and the lower right mounting shaft block (35) are slidably arranged from top to bottom in the U-shaped opening. The middle rotating shaft (32) is fixedly arranged on the outer sides of both ends of the U-shaped opening of the right side upright plate (31).

3. The apparatus according to claim 2, characterized in that: The left-end adjustment component (4) includes a left-side upright plate (41) with a U-shaped opening. The upper right-side corresponding shaft block (42), the middle right-side corresponding shaft block (44), and the lower right-side corresponding shaft block (45) are slidably arranged from top to bottom in the U-shaped opening. Each shaft block is provided with a sprocket (43) on its outer side. The sprocket (43) of the lower right-side corresponding shaft block (45) is connected to a drive component (5). The left-side upright plate (41) is provided with a protective upright plate (46) on its outer side.

4. The apparatus according to claim 3, characterized in that: The upper extrusion roller (61) is installed between the upper right mounting shaft block (33) and the upper right corresponding shaft block (42), the middle extrusion roller (62) is installed between the middle right mounting shaft block (34) and the middle right corresponding shaft block (44), and the coating assembly (8) is installed between the lower right mounting shaft block (35) and the lower right corresponding shaft block (45); the output shafts of the upper extrusion roller (61), the middle extrusion roller (62) and the coating assembly (8) are connected to the drive component (5) via a sprocket (43).

5. The apparatus according to claim 4, characterized in that: The right adjustment component (3) and the left adjustment component (4) are provided with a cleaning scraper component (7) on their outer sides, and the coating component (8) is provided with a protective cover (63) on its outer side. The cleaning scraper component (7) includes an angle adjuster (71) fixed to the right side upright plate (31), and four sets of fixing blocks (73) are provided on the rotating shaft (72) at its output end. A rubber scraper (74) is fixed on the outer side of the fixing block (73), and the rubber scraper (74) can be adjusted to contact the surface of the upper extrusion roller (61) and the middle extrusion roller (62).

6. The apparatus according to claim 5, characterized in that: The inner side of the telescopic permanent magnet assembly (82) of the coating assembly (8) is provided with a support filter steel mesh (83), and the two are arranged alternately; the inner side of the telescopic permanent magnet assembly (82) is provided with a support partition assembly (85), and an oil guide removal assembly (86) is rotatably provided inside the support partition assembly (85).

7. The apparatus according to claim 6, characterized in that: The support partition assembly (85) includes a rotating central shaft (852), on which an array of isolation support plates (851) are provided. Adjacent isolation support plates (851) form an isolation groove (853). An oil guide and removal assembly (86) is rotatably installed in the isolation groove (853). The oil guide and removal assembly (86) includes a central shaft rotating plate (861), with a through central shaft (862) on its inner side installed in the rotating central shaft (852). A cleaning ring frame (863) is fixed at the outer end of the central shaft rotating plate (861).

8. The apparatus according to claim 7, characterized in that: The telescopic permanent magnet assembly (82) includes a sliding sleeve (822) fixed to the isolation support plate (851), which has a limiting rod (823) inside and a limiting spring (825) on the outside. An arc-shaped permanent magnet (821) is fixed on the sliding plate at the top of the limiting spring (825), and the arc-shaped permanent magnet (821) has multiple sets of oil filter ports (824).

9. The apparatus according to claim 1, characterized in that: The extrusion degreasing assembly (9) includes an arc-shaped outer shell (91), and an array of permanent magnets (92) are arranged in the arc-shaped inner cavity (93) on its inner side. The arc-shaped outer shell (91) has multiple sets of wavy open scraping grooves (94) on the side close to the magnetic sponge sleeve (81).

10. The apparatus according to claim 1, characterized in that: The oil box assembly (2) includes a lifting cylinder assembly (21), with an oil box (22) fixedly mounted on its upper end. The oil box (22) is located directly below the coating assembly (8).

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