A protection device for reducing vibration of a nip roller

Abstract

The utility model relates to the technical field of roll pressure zone pressurization in industrial production, and disclose a kind of protection device for reducing vibration of pressure zone roller;Including bottom plate and support frame, the support frame is fixed on the top of bottom plate, the top of support frame is provided with pusher assembly, the bottom of pusher assembly is provided with connecting frame, the top of connecting frame is provided with buffer assembly;The utility model is pushed down by cylinder and guiding rod, guiding rod drives connecting frame and upper compression roller to press down, realize the press-down of upper compression roller, make material form stable pressure zone between upper and lower compression roller, the force of upper compression roller drives connecting frame to move up simultaneously, while driving two groups of pressure column to squeeze air chamber inwards and generate damping, the effect of reducing vibration of pressure zone roller is realized by the cooperation of the two, when moving by material extrusion drives lower compression roller to rotate, at this time, scraper will scrape off the residue attached on lower compression roller.

Description

Technical Field

[0001] This utility model relates to the field of pressure technology for roller-type pressing zones in industrial production, specifically a protective device for reducing vibration of pressing zone rollers. Background Technology

[0002] The press roll is a core component in industrial production, especially in papermaking, film lamination, and mineral processing, used to form a pressing zone to achieve material extrusion, dewatering, or finishing functions. It usually consists of two rolls, upper and lower, which are in close contact through mechanical pressure or hydraulic system to form a specific contact area, namely the pressing zone. In the papermaking process, the press roll plays a crucial role. The paper web is in close contact with the felt in the pressing zone, and the mechanical pressure between the rolls effectively squeezes out the moisture from the paper web, improving the dryness and density of the paper.

[0003] Vibration-reducing protective devices are needed for pressing rollers because vibration can cause uneven wear on the roller surface, affect the stability of pressing pressure, thereby reducing product quality and even causing equipment failure. Protective devices can effectively reduce vibration, ensure smooth roller operation, extend service life, and improve production efficiency. Existing vibration-reducing protective devices for pressing rollers can effectively suppress vibration during equipment operation, but they have significant shortcomings in terms of roller surface cleaning. They lack cleaning functions, and material residues, dust, or oil stains easily adhere to the surface of pressing rollers after long-term operation. These deposits not only change the surface roughness of the rollers and disrupt the uniformity of pressing pressure distribution, leading to product thickness fluctuations and surface defects, but also exacerbate abnormal vibrations between the rollers and materials due to changes in the coefficient of friction.

[0004] Therefore, it is necessary to provide a new protective device for reducing vibration of the pressure rollers to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a protective device for reducing vibration of the pressing roller, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a protective device for reducing vibration of a pressure roller, comprising a base plate and a support frame, wherein the support frame is fixed to the top of the base plate, a pushing component is provided at the top of the support frame, a connecting frame is provided at the bottom of the pushing component, a buffer component is provided at the top of the connecting frame, and an upper pressure roller is rotatably connected to the inner wall of the connecting frame. A guide assembly is disposed on the top of the base plate. A positioning frame is disposed on the outside of the guide assembly. A fixing frame is fixed on one side of the positioning frame. A vibration damping assembly is disposed inside the fixing frame. A connecting frame is disposed on the top of the vibration damping assembly. A lower pressure roller is rotatably connected to the inner wall of the connecting frame. The mounting bracket is fixed to the top of the connecting bracket. The inner wall of the mounting bracket is fitted with a mounting column. One end of the mounting column is provided with a disassembly component, and the other end of the mounting column is fixed with a scraper.

[0007] Preferably, the pushing assembly includes a cylinder fixed to the top of the support frame, the piston rod of the cylinder is fixed with a guide rod, the outer side of the guide rod is slidably connected to the inner wall of the support frame, and one end of the guide rod is fixed to the top of the connecting frame.

[0008] Preferably, the buffer assembly includes a spring and a damper fixed to the top of the connecting frame, and one end of the spring and the upper end of the damper are both fixed to the inner wall of the support frame.

[0009] Preferably, the guide assembly includes a guide plate group rotatably connected to the top of the base plate, and the inner wall of the guide plate group is rotatably connected to the bottom of the connecting frame. A guide block is rotatably connected to the inner wall of the guide plate group, and the outer side of the guide block is slidably connected to the inner wall of the positioning frame.

[0010] Preferably, the vibration damping assembly includes an air chamber fixed to the inner wall of the fixing frame, and a pressure column is slidably connected to the inner wall of the air chamber, with the top of the pressure column fixed to the bottom of the connecting frame.

[0011] Preferably, the disassembly assembly includes a disassembly plate fixed to one end of the mounting post, the inner wall of the disassembly plate being threaded with bolts, and the outer side of the bolts being threaded with the inner wall of the mounting bracket.

[0012] Preferably, a connecting rod is fixed to the inner wall of the upper pressure roller, and a connecting groove is provided on the inner wall of the support frame, and the outer side of the connecting rod is slidably connected to the inner wall of the support frame through the connecting groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a cylinder to push a guide rod downwards, which in turn drives the connecting frame and the upper pressure roller downwards, thus creating a stable pressure zone between the upper and lower pressure rollers and ensuring uniform pressure during the extrusion process. The upper pressure roller, under pressure, moves the connecting frame upwards, compressing the spring and causing the damper to dampen, thus reducing vibration on the upper pressure roller. The upper pressure roller extrudes the material and acts on the lower pressure roller, causing it to move the connecting frame, rotating the guide plate assembly and causing the guide block to slide along the positioning frame. Simultaneously, it causes the two sets of pressure columns to extrude into the air chamber, generating damping and further reducing vibration on the lower pressure roller. Together, these two mechanisms reduce vibration in the pressure zone rollers. As the material is extruded, the lower pressure roller rotates, and a scraper removes any residue adhering to it. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the protective device for reducing vibration of the pressure rollers provided by this utility model; Figure 2 This is a schematic diagram of the structure of the pushing component and the buffer component in this utility model; Figure 3 This is a schematic diagram of the structure of the guide component and the vibration damping component in this utility model; Figure 4 This is a schematic diagram of the disassembly component in this utility model.

[0015] In the diagram: 1. Base plate; 2. Support frame; 3. Pushing assembly; 31. Cylinder; 32. Guide rod; 4. Connecting frame; 5. Buffer assembly; 51. Spring; 52. Damper; 6. Upper pressure roller; 7. Guide assembly; 71. Guide plate assembly; 72. Guide block; 8. Positioning frame; 9. Fixing frame; 10. Vibration reduction assembly; 101. Air chamber; 102. Pressure column; 11. Connecting frame; 12. Lower pressure roller; 13. Mounting frame; 14. Mounting column; 15. Disassembly assembly; 151. Disassembly plate; 152. Bolt; 16. Scraper; 17. Connecting rod; 18. Connecting groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 As shown, a protective device for reducing vibration of a pressing roller includes a base plate 1 and a support frame 2. The support frame 2 is fixed to the top of the base plate 1. A pushing component 3 is provided at the top of the support frame 2, a connecting frame 4 is provided at the bottom of the pushing component 3, and a buffer component 5 is provided at the top of the connecting frame 4. An upper pressure roller 6 is rotatably connected to the inner wall of the connecting frame 4. In terms of extruding materials, the pushing component 3 pushes the connecting frame 4 downward, and the connecting frame 4 drives the upper pressure roller 6 downward, ensuring the uniformity of pressure during the extrusion process. In terms of vibration reduction of the upper pressure roller 6, the upper pressure roller 6 drives the connecting frame 4 upward by being subjected to force, and its compression buffer component 5 generates damping, thus forming the vibration reduction effect of the upper pressure roller 6. The guide assembly 7 is located on the top of the base plate 1. A positioning frame 8 is located on the outside of the guide assembly 7. A fixing frame 9 is fixed on one side of the positioning frame 8. A vibration damping assembly 10 is located inside the fixing frame 9. A connecting frame 11 is located on the top of the vibration damping assembly 10. A lower pressure roller 12 is rotatably connected to the inner wall of the connecting frame 11. In terms of vibration damping of the lower pressure roller 12, the upper pressure roller 6 squeezes the material and acts on the lower pressure roller 12 to move, which drives the connecting frame 11 to move, causing the guide assembly 7 to rotate and slide along the positioning frame 8. At the same time, it drives the vibration damping assembly 10 to generate damping, forming vibration damping of the lower pressure roller 12. The two work together to achieve the effect of reducing vibration of the pressure roller. Mounting bracket 13 is fixed to the top of connecting bracket 11. Mounting column 14 is snapped into the inner wall of mounting bracket 13. One end of mounting column 14 is provided with disassembly component 15, and the other end of mounting column 14 is fixed with scraper 16. In terms of cleaning the pressure roller, the lower pressure roller 12 is rotated by the movement of the material during extrusion. At this time, scraper 16 scrapes off the residue attached to the lower pressure roller 12, removes surface residue in real time, and avoids pressure fluctuations and surface quality defects caused by material adhesion. When scraper 16 needs to be replaced, the disassembly component 15 is separated from mounting column 14 to form a preliminary unlock. The mounting column 14 is pulled to release the snap-fit ​​from mounting bracket 13 and separate, thus achieving the effect of disassembling scraper 16.

[0018] The pushing assembly 3 includes a cylinder 31 fixed to the top of the support frame 2. The piston rod of the cylinder 31 is fixed with a guide rod 32, and the outer side of the guide rod 32 is slidably connected to the inner wall of the support frame 2. One end of the guide rod 32 is fixed to the top of the connecting frame 4. When the material needs to be processed, the cylinder 31 pushes the guide rod 32 down, and the guide rod 32 drives the connecting frame 4 and the upper pressure roller 6 to press down, thereby pressing down the upper pressure roller 6 and forming a stable pressure zone between the upper pressure roller 6 and the lower pressure roller 12, ensuring the pressure uniformity of the extrusion process.

[0019] The buffer assembly 5 includes a spring 51 and a damper 52 fixed to the top of the connecting frame 4. One end of the spring 51 and the upper end of the damper 52 are both fixed to the inner wall of the support frame 2. In terms of vibration reduction of the upper pressure roller 6, the force of the upper pressure roller 6 is transmitted to the spring 51 and the damper 52 through the connecting frame 4. The elasticity of the spring 51 is used to absorb the instantaneous impact energy, while the damper 52 consumes the vibration kinetic energy through viscous damping, forming a dual vibration reduction mechanism. This effectively suppresses the high-frequency vibration of the upper pressure roller 6 during the extrusion process, ensures the stability of the pressure in the pressing zone, and thus improves the material processing effect and the reliability of equipment operation.

[0020] The guide assembly 7 includes a guide plate assembly 71 rotatably connected to the top of the base plate 1, and the inner wall of the guide plate assembly 71 is rotatably connected to the bottom of the connecting frame 11. A guide block 72 is rotatably connected to the inner wall of the guide plate assembly 71, and the outer side of the guide block 72 is slidably connected to the inner wall of the positioning frame 8. The material is squeezed by the upper pressure roller 6 and acts on the lower pressure roller 12 to move, which drives the connecting frame 11 to move, causing the guide plate assembly 71 to rotate and drive the guide block 72 to slide along the inside of the positioning frame 8. This realizes the motion guidance of the lower pressure roller 12, ensuring that the upper and lower pressure rollers 12 always maintain a stable pressure zone gap, effectively avoiding uneven squeezing caused by material thickness fluctuations or equipment vibration, thereby improving the processing effect and product consistency.

[0021] The vibration damping assembly 10 includes an air chamber 101 fixed to the inner wall of the fixed frame 9. A pressure column 102 is slidably connected to the inner wall of the air chamber 101, and the top of the pressure column 102 is fixed to the bottom of the connecting frame 11. The connecting frame 11 synchronously drives the two sets of pressure columns 102 to squeeze the air chamber 101 inward to generate damping. The damping force generated by gas compression effectively absorbs the vibration energy of the lower pressure roller 12. The displacement of the pressure column 102 changes the gas volume in the air chamber 101, thereby changing the gas pressure. The damping force generated by the gas pressure change is used to absorb the vibration energy, which not only significantly reduces the high-frequency vibration of the lower pressure roller 12 during the extrusion process.

[0022] It should be noted that there are two sets of pressure columns 102. One set is fixed to the connecting frame 11 and the other set is fixed to the base plate 1. The two sets of pressure columns 102 squeeze the air chamber 101 inward to generate damping. The damping force generated by the gas compression effectively absorbs the vibration energy of the lower pressure roller 12.

[0023] The disassembly assembly 15 includes a disassembly plate 151 fixed to one end of the mounting column 14. The inner wall of the disassembly plate 151 is threaded with a bolt 152, and the outer side of the bolt 152 is threaded with the inner wall of the mounting bracket 13. When the scraper 16 needs to be replaced, the bolt 152 is turned out along the threads of the disassembly plate 151 and the inner wall of the mounting bracket 13 to achieve initial unlocking. Then, the mounting column 14 is pulled out of the mounting bracket 13 to complete the quick separation. This simplifies the scraper 16 replacement process, reduces downtime, and ensures that the disassembly process is safe and reliable, effectively improving equipment maintenance efficiency and ease of operation.

[0024] A connecting rod 17 is fixed to the inner wall of the upper pressure roller 6, and a connecting groove 18 is provided on the inner wall of the support frame 2. The outer side of the connecting rod 17 is slidably connected to the inner wall of the support frame 2 through the connecting groove 18. When the connecting frame 4 pushes the upper pressure roller 6 to move downward, since the upper pressure roller 6 is fixed to the connecting rod 17 and the connecting rod 17 is also slidably connected to the connecting groove 18, the connecting rod 17 plays a guiding role, restricting the upper pressure roller 6 from pressing down in a straight line, ensuring that the upper pressure roller 6 always presses down vertically, and ensuring the uniformity of pressure distribution between the upper pressure roller 6 and the lower pressure roller 12.

[0025] Working Principle: During operation, the external conveying device feeds the material to be processed into the pressure zone formed by the upper pressure roller 6 and the lower pressure roller 12. During the pressing process, the cylinder 31 drives the guide rod 32 downwards, which in turn drives the upper pressure roller 6 to press down synchronously via the connecting frame 4. At this time, the connecting rod 17 slides linearly along the connecting groove 18, forming a rigid guide to ensure the vertical movement trajectory of the upper pressure roller 6. This allows the material to form a stable pressure zone between the two rollers, ensuring uniform pressure distribution. To address the vibration problem of the upper pressure roller 6, the connecting frame 4 transmits the force to the spring 51 and the damper 52. The spring 51 absorbs instantaneous impact energy through elastic deformation, while the damper 52 consumes vibration kinetic energy through viscous damping. Together, they form a dual vibration reduction system, effectively suppressing high-frequency vibrations. Vibration occurs when the upper pressure roller 6 compresses the material, generating a reaction force that pushes the lower pressure roller 12 to move. The connecting frame 11 moves accordingly, driving the guide plate assembly 71 to rotate and causing the guide block 72 to slide along the positioning frame 8, forming a motion guide. At the same time, the connecting frame 11 pulls the two sets of pressure columns 102 to compress the air chamber 101 inward. Damping force is generated through gas compression to regulate the absorption of vibration energy. In terms of cleaning the pressure roller, when the lower pressure roller 12 rotates, the scraper 16 scrapes off the surface residue in real time, avoiding pressure fluctuations in the pressure zone and product surface defects caused by material adhesion. When the scraper 16 is replaced, it is first unlocked by disassembling the component 15 and separating it from the mounting column 14, and then pulling the mounting column 14 away from the mounting frame 13 snap-fit ​​structure, simplifying the maintenance process.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for reducing vibration of a pressure roller, comprising a base plate (1), characterized in that, Also includes: A support frame (2) is fixed to the top of the base plate (1). A pushing component (3) is provided at the top of the support frame (2). A connecting frame (4) is provided at the bottom of the pushing component (3). A buffer component (5) is provided at the top of the connecting frame (4). An upper pressure roller (6) is rotatably connected to the inner wall of the connecting frame (4). A guide assembly (7) is disposed on the top of the base plate (1). A positioning frame (8) is disposed on the outside of the guide assembly (7). A fixing frame (9) is fixed on one side of the positioning frame (8). A vibration damping assembly (10) is disposed inside the fixing frame (9). A connecting frame (11) is disposed on the top of the vibration damping assembly (10). A lower pressure roller (12) is rotatably connected to the inner wall of the connecting frame (11). Mounting bracket (13) is fixed to the top of the connecting bracket (11). Mounting column (14) is snapped into the inner wall of the mounting bracket (13). One end of the mounting column (14) is provided with a disassembly component (15), and the other end of the mounting column (14) is fixed with a scraper (16).

2. The protective device for reducing vibration of the pressing roller according to claim 1, characterized in that: The pushing assembly (3) includes a cylinder (31) fixed to the top of the support frame (2). The piston rod of the cylinder (31) is fixed with a guide rod (32), and the outer side of the guide rod (32) is slidably connected to the inner wall of the support frame (2). One end of the guide rod (32) is fixed to the top of the connecting frame (4).

3. The protective device for reducing vibration of the pressing roller according to claim 1, characterized in that: The buffer assembly (5) includes a spring (51) and a damper (52) fixed to the top of the connecting frame (4), and one end of the spring (51) and the upper end of the damper (52) are both fixed to the inner wall of the support frame (2).

4. The protective device for reducing vibration of the pressing roller according to claim 1, characterized in that: The guide assembly (7) includes a guide plate group (71) rotatably connected to the top of the base plate (1), and the inner wall of the guide plate group (71) is rotatably connected to the bottom of the connecting frame (11). The inner wall of the guide plate group (71) is rotatably connected to a guide block (72), and the outer side of the guide block (72) is slidably connected to the inner wall of the positioning frame (8).

5. The protective device for reducing vibration of the pressing roller according to claim 1, characterized in that: The vibration damping assembly (10) includes an air chamber (101) fixed to the inner wall of the fixing frame (9), and a pressure column (102) is slidably connected to the inner wall of the air chamber (101), and the top of the pressure column (102) is fixed to the bottom of the connecting frame (11).

6. The protective device for reducing vibration of the pressing roller according to claim 1, characterized in that: The disassembly assembly (15) includes a disassembly plate (151) fixed to one end of the mounting post (14), the inner wall of the disassembly plate (151) being threaded with a bolt (152), and the outer side of the bolt (152) being threaded with the inner wall of the mounting bracket (13).

7. The protective device for reducing vibration of the pressing roller according to claim 1, characterized in that: The inner wall of the upper pressure roller (6) is fixed with a connecting rod (17), and the inner wall of the support frame (2) is provided with a connecting groove (18), and the outer side of the connecting rod (17) is slidably connected to the inner wall of the support frame (2) through the connecting groove (18).

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