A paper pressing roller pressure balancing mechanism

Abstract

The utility model relates to the field of down pressure paper roller pressure balance mechanism, especially down pressure paper roller pressure balance mechanism. Including fixed plate and adjusting structure, the inside installation of fixed plate has down roller, the upper surface of fixed plate installs upper roller by the adjusting structure, the upper surface of fixed plate is equipped with adjusting structure, the adjusting structure includes two side plates, two side plates are fixedly connected with fixed plate, the inner wall slidingly connected of side plate has moving block and extruding block, the inner wall fixedly connected of side plate has the locating rod, the locating rod is slidingly connected with moving block. The utility model provides a kind of down pressure paper roller pressure balance mechanism, when the paper of different thickness is needed to be flattened, operator often needs to manually adjust pressure device repeatedly or replace relevant components, since equipment must be shut down in the adjusting process to avoid potential harm to operator, this adjustment mode can lead to the significant decline of equipment work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pressure balancing mechanisms for paper rollers, and more particularly to a pressure balancing mechanism for paper rollers. Background Technology

[0002] The pressure balancing mechanism for the lower paper roll is commonly found in paper machines and paperboard production equipment. It is mainly used to adjust the pressure of the paper roll to ensure that the paper is conveyed evenly and stably during the production process. Its core purpose is to avoid problems such as uneven tension, indentation, and folding of the paper during the production process. It is a common lower paper roll pressure balancing mechanism in the existing technology.

[0003] Existing technologies, such as the utility model patent with publication number CN214526992U, disclose a paper pressure roller transmission device. This patent uses a motor, a frame, an upper paper pressure roller, a lower paper pressure roller, a paper conveying table drive shaft, and a guide block device. The upper paper pressure roller, the lower paper pressure roller, and the paper conveying table drive shaft are arranged parallel to each other on the frame and can all rotate relative to the frame. The motor is mounted on the frame to provide power for the rotation of the upper paper pressure roller, the lower paper pressure roller, and the paper conveying table drive shaft. The guide block device is mounted on the frame and connected to the upper paper pressure roller to drive the upper paper pressure roller to slide vertically along the frame. This device enables real-time, constant-speed, counter-rotating upper and lower pressure rollers, preventing paper slippage and reducing paper scratches. The pressure exerted on the paper by the upper and lower pressure rollers is adjustable, reducing problems such as paper damage caused by excessive pressure or paper failure due to insufficient pressure. Furthermore, the upper and lower pressure rollers and the paper feed table drive shaft share the same power source, ensuring consistent motion patterns.

[0004] The inventors discovered in the prior art that when it is necessary to flatten paper of different thicknesses, operators often need to manually and repeatedly adjust the pressure device or replace related parts. Since the equipment must be stopped during the adjustment process to avoid potential injury to the operator, this adjustment method will lead to a significant decrease in the working efficiency of the equipment. Utility Model Content

[0005] The purpose of this invention is to address the problem in the existing technology where, when flattening papers of different thicknesses, operators often need to manually and repeatedly adjust the pressure device or replace related parts. Since the equipment must be stopped during the adjustment process to avoid potential injury to the operator, this adjustment method leads to a significant decrease in the working efficiency of the equipment. Therefore, a pressure balancing mechanism for the lower paper roller is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides a pressure balancing mechanism for a lower paper roller, comprising: a fixed plate and an adjusting structure. A lower roller is installed inside the fixed plate, and an upper roller is installed on the upper surface of the fixed plate via the adjusting structure. The adjusting structure includes two side plates, which are fixedly connected to the fixed plate. A moving block and a pressing block are slidably connected to the inner wall of each side plate. A positioning rod is fixedly connected to the inner wall of each side plate, slidably connected to both the moving block and the pressing block. A spring is fitted onto the arc surface of the positioning rod, and both ends of the spring are fixedly connected to the pressing block and the moving block, respectively. A connecting plate is fixedly connected to the side of the two moving blocks that are close to each other. Two movable blocks are rotatably connected to the upper roller. A fixed frame is fixedly connected to the side of each of the two extrusion blocks that is close to each other. A connecting plate is rotatably connected to the inner wall of the fixed frame. A top plate is fixedly connected to the upper surface of the two side plates. A protective cover is fixedly connected to one side of the top plate. A motor is fixedly connected to the inner wall of the protective cover. A limiting groove is formed in the inner wall of the top plate. Two sliders are slidably connected to the inner wall of the limiting groove. A lead screw is rotatably connected to the inner wall of the limiting groove. The lead screw is rotatably connected to the top plate. Opposite threads are formed on the arc surfaces at both ends of the lead screw. The lead screw is fixedly connected to the output end of the motor. The lead screw is threadedly connected to the slider. A connecting frame is fixedly connected to the lower surface of the slider. The connecting frame is rotatably connected to the connecting plate.

[0007] The effect achieved by the above components is that when personnel need to flatten thin or fragile paper, they can start the motor to move the pressing block away from the moving block, which reduces the pressure exerted by the spring on the upper roller, thereby preventing the paper from being over-compressed or damaged, and improving the applicability of the lower pressure roller and the working efficiency of the equipment.

[0008] Preferably, the inner wall of the limiting groove is fixedly connected to two limiting rods, and the limiting rods are slidably connected to the slider.

[0009] The effect achieved by the above components is that the limiting rod can limit the slider and prevent the slider from being misaligned during the sliding process on the inner wall of the limiting groove.

[0010] Preferably, the inner wall of the protective cover is provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes are evenly distributed on the protective cover.

[0011] The effect achieved by the above components is that the heat dissipation holes can help the motor dissipate heat and extend the service life of the motor.

[0012] Preferably, a protective pad is fixedly connected to the inner wall of the side plate, and the protective pad abuts against the extrusion block.

[0013] The effect achieved by the above components is that the protective pad can protect the extrusion block and prevent the upper surface of the extrusion block from directly contacting the inner wall of the side plate.

[0014] Preferably, the connecting plate is made of stainless steel.

[0015] The effect achieved by the above components is that the stainless steel plate has high strength and good wear resistance, which can prevent the connecting plate from deforming during short-term use.

[0016] Preferably, the arc surface of the spring is fitted with a bellows, and the two ends of the bellows are fixedly connected to the compression block and the moving block, respectively.

[0017] The effect achieved by the above components is that the bellows can protect the spring from interference from the external environment, thereby improving the service life of the spring.

[0018] Preferably, the inner wall of the connecting plate is provided with a cleaning structure, which includes two auxiliary rods, a first gear, and a mounting plate. The two auxiliary rods are slidably connected to the connecting plate, the first gear is rotatably connected to the connecting plate, the mounting plate is fixedly connected to the connecting plate, a motor is fixedly connected to one side of the mounting plate, a second gear is fixedly connected to the output end of the motor, the first gear and the second gear mesh, a threaded rod is threadedly connected to the inner wall of the first gear, the threaded rod is slidably connected to the connecting plate, a squeezing plate is fixedly connected to the lower end of the two auxiliary rods, the squeezing plate is fixedly connected to the threaded rod, and a cleaning cotton is fixedly connected to the lower surface of the squeezing plate.

[0019] The effect achieved by the above-mentioned components is that after personnel discover that there are many impurities attached to the surface of the upper roller, they can start the motor to move the cleaning cotton downwards until the cleaning cotton comes into contact with the upper roller, thereby facilitating personnel to clean the upper roller quickly and easily, thus improving the work efficiency of personnel.

[0020] Compared with related technologies, the pressure balancing mechanism for the lower paper roller provided by this utility model has the following beneficial effects:

[0021] This utility model provides a pressure balancing mechanism for a paper press roller. By setting an adjustment structure, when personnel need to flatten thin or fragile paper, the spring can be adjusted to reduce the spring force, thereby preventing the paper from being over-compressed or damaged, improving the applicability of the paper press roller and the working efficiency of the equipment.

[0022] By setting up a cleaning structure, when personnel find that there are many impurities attached to the surface of the upper roller and need to clean them, the cleaning structure can facilitate personnel to quickly clean the impurities on the surface of the upper roller, thereby improving the work efficiency of personnel. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of a pressure balancing mechanism for a lower paper roller provided by this utility model;

[0024] Figure 2 for Figure 1 The diagram shows the structural schematic of the cross-sectional structure.

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at point A is shown.

[0026] Figure 4 for Figure 1 The diagram shows a partial structural schematic.

[0027] The diagram shows the following components: 1. Fixed plate; 2. Lower roller; 3. Adjustment structure; 301. Side plate; 302. Moving block; 303. Positioning rod; 304. Spring; 305. Bellows; 306. Extrusion block; 307. Protective pad; 308. Top plate; 309. Limiting groove; 310. Slider; 311. Lead screw; 312. Limiting rod; 313. Fixed frame; 314. Connecting plate; 315. Connecting frame; 316. Protective cover; 317. Heat dissipation hole; 318. Connecting plate; 319. Motor; 4. Cleaning structure; 41. Auxiliary rod; 42. Extrusion plate; 43. Cleaning cotton; 44. First gear; 45. Threaded rod; 46. Mounting plate; 47. Motor; 48. Second gear; 5. Upper roller. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0030] Please see Figure 1 The present invention provides a pressure balancing mechanism for a lower paper roller, comprising: a fixed plate 1 and an adjusting structure 3. A lower roller 2 is installed inside the fixed plate 1, and an upper roller 5 is installed on the upper surface of the fixed plate 1 by means of the adjusting structure 3. The upper surface of the fixed plate 1 is provided with the adjusting structure 3, and the inner wall of the connecting plate 318 is provided with a cleaning structure 4.

[0031] In the embodiments of this utility model, please refer to Figure 2 and Figure 3The adjusting structure 3 includes two side plates 301, which are fixedly connected to the fixed plate 1. A moving block 302 and a pressing block 306 are slidably connected to the inner wall of each side plate 301. A positioning rod 303 is fixedly connected to the inner wall of each side plate 301, and is slidably connected to both the moving block 302 and the pressing block 306. A spring 304 is fitted onto the arc surface of the positioning rod 303, and both ends of the spring 304 are fixedly connected to the pressing block 306 and the moving block 302, respectively. A connecting plate 318 is fixedly connected to the side of each moving block 302 that is close to each other. The two moving blocks 302 are rotatably connected to the upper roller 5. A fixing frame 313 is fixedly connected to the side of each pressing block 306 that is close to each other. The inner wall of the fixing frame 313... A connecting plate 314 is rotatably connected. A top plate 308 is fixedly connected to the upper surface of the two side plates 301. A protective cover 316 is fixedly connected to one side of the top plate 308. A motor 319 is fixedly connected to the inner wall of the protective cover 316. A limiting groove 309 is opened on the inner wall of the top plate 308. Two sliders 310 are slidably connected to the inner wall of the limiting groove 309. A lead screw 311 is rotatably connected to the inner wall of the limiting groove 309. The lead screw 311 is rotatably connected to the top plate 308. Opposite threads are opened on the arc surfaces at both ends of the lead screw 311. The lead screw 311 is fixedly connected to the output end of the motor 319. The lead screw 311 is threadedly connected to the slider 310. A connecting frame 315 is fixedly connected to the lower surface of the slider 310. The connecting frame 315 is rotatably connected to the connecting plate 314. When personnel need to flatten thin or fragile paper, they can start the motor 319 to move the pressing block 306 away from the moving block 302. This reduces the pressure exerted by the spring 304 on the upper roller 5, thus preventing the paper from being over-compressed or damaged. This improves the applicability of the lower pressure roller and the working efficiency of the equipment. Two limiting rods 312 are fixedly connected to the inner wall of the limiting groove 309, and these rods 312 are slidably connected to the slider 310. The limiting rods 312 limit the slider 310, preventing it from becoming misaligned during sliding along the inner wall of the limiting groove 309. Several heat dissipation holes 317 are evenly distributed on the inner wall of the protective cover 316. These holes assist in heat dissipation for the motor 319, extending its service life. A protective pad 307 is fixedly connected to the inner wall of the side plate 301, and the protective pad 307 abuts against the pressing block 306. The protective pad 307 protects the extrusion block 306, preventing its upper surface from directly contacting the inner wall of the side plate 301. The connecting plate 314 is made of stainless steel. Stainless steel has high strength and good wear resistance, preventing deformation of the connecting plate 314 during short-term use. The arc surface of the spring 304 is fitted with a bellows 305, and both ends of the bellows 305 are fixedly connected to the extrusion block 306 and the moving block 302, respectively.The bellows 305 can protect the spring 304 from interference from the external environment, thereby extending the service life of the spring 304.

[0032] In the embodiments of this utility model, please refer to Figure 4 The cleaning structure 4 includes two auxiliary rods 41, a first gear 44, and a mounting plate 46. The two auxiliary rods 41 are slidably connected to a connecting plate 318, the first gear 44 is rotatably connected to the connecting plate 318, and the mounting plate 46 is fixedly connected to the connecting plate 318. A motor 47 is fixedly connected to one side of the mounting plate 46, and a second gear 48 is fixedly connected to the output end of the motor 47. The first gear 44 and the second gear 48 mesh. A threaded rod 45 is threadedly connected to the inner wall of the first gear 44, and the threaded rod 45 is slidably connected to the connecting plate 318. A squeezing plate 42 is fixedly connected to the lower end of the two auxiliary rods 41, and the squeezing plate 42 is fixedly connected to the threaded rod 45. A cleaning cotton 43 is fixedly connected to the lower surface of the squeezing plate 42. This design allows personnel to quickly clean the upper roller 5 after discovering a large amount of impurities adhering to its surface, by starting the motor 47 to move the cleaning cotton 43 downwards until it contacts the upper roller, thus improving work efficiency.

[0033] The working principle of the pressure balancing mechanism for the lower paper roller provided by this utility model is as follows: The pressure balancing mechanism for the lower paper roller is installed in the roller pressing system of the papermaking equipment to ensure that the paper remains flat during the transmission process and to avoid paper quality problems caused by uneven pressure. When personnel need to flatten thin or fragile paper, they can first start the motor 319. The output end of the motor 319 drives the lead screw 311 to rotate. The lead screw 311 drives the two sliders 310 to move closer to each other. The heat dissipation holes 317 opened on the inner wall of the protective cover 316 can assist the motor 319 in heat dissipation and improve the working efficiency of the motor 319. The slider 310 slides on the arc surface of the limiting rod 312, which limits the slider 310 to prevent misalignment during sliding on the inner wall of the limiting groove 309. The slider 310 also moves the connecting frame 315 towards each other, which in turn moves one end of the connecting plate 314 towards the same direction. The connecting plate 314 then moves the fixing frame 313 upwards, which in turn moves the pressing block 306 upwards. At this point, the spring 304 rebounds, and the bellows 305 stretches. The elastic force exerted by spring 304 on moving block 302 will decrease accordingly. After the elastic force of the two springs 304 is adjusted, the connecting plate 318 is moved. The connecting plate 318 drives the two moving blocks 302 to move upward. The moving blocks 302 drive spring 304 and bellows 305 to wind up. The bellows 305 can protect spring 304 from external environmental interference, thereby improving the service life of spring 304. Then, the two moving blocks 302 also drive the upper roller 5 to move upward until a suitable distance is left between the upper roller 5 and the lower roller 2. Then, the operator moves one end of the paper to make... The paper passes between the upper roller 5 and the lower roller 2. When the operator releases the connecting plate 318, the two springs 304 rebound, causing the upper roller 5 to move downward until the paper comes into contact with the upper roller 5 and the lower roller 2. As the paper moves between the upper roller 5 and the lower roller 2, it drives the upper roller 5 and the lower roller 2 to rotate. The connecting plate 314 is made of stainless steel, which has high strength and good wear resistance, preventing deformation of the connecting plate 314 during short-term use. The protective pad 307 on the inner wall of the side plate 301 protects the pressing block 306 and prevents the upper surface of the pressing block 306 from directly contacting the inner wall of the side plate 301.

[0034] In addition, when personnel need to clean the impurities attached to the surface of the upper roller 5, they can start the motor 47. The output end of the motor 47 drives the second gear 48 to rotate, the second gear 48 drives the first gear 44 to rotate, the first gear 44 drives the threaded rod 45 to move downward, the threaded rod 45 drives the extrusion plate 42 to move downward, and the extrusion plate 42 drives the two auxiliary rods 41 and the cleaning cotton 43 to move downward until the cleaning cotton 43 contacts the arc surface of the upper roller 5.

[0035] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A downforce roller pressure balancing mechanism characterized by, include: A fixed plate (1) and an adjusting structure (3) are provided. A lower roller (2) is installed inside the fixed plate (1). An upper roller (5) is installed on the upper surface of the fixed plate (1) via the adjusting structure (3). The upper surface of the fixed plate (1) is provided with the adjusting structure (3). The adjusting structure (3) includes two side plates (301). The two side plates (301) are fixedly connected to the fixed plate (1). A moving block (302) and a pressing block (306) are slidably connected to the inner wall of the side plates (301). The inner wall of the side plates (301) is fixed. A positioning rod (303) is connected to the moving block (302), and the positioning rod (303) is slidably connected to the extrusion block (306). A spring (304) is fitted on the arc surface of the positioning rod (303). The two ends of the spring (304) are fixedly connected to the extrusion block (306) and the moving block (302) respectively. A connecting plate (318) is fixedly connected to the side of the two moving blocks (302) that are close to each other. The two moving blocks (302) are rotatably connected to the upper roller (5). Each of the extrusion blocks (306) is fixedly connected to a fixing frame (313) on one side closest to each other. A connecting plate (314) is rotatably connected to the inner wall of the fixing frame (313). A top plate (308) is fixedly connected to the upper surface of the two side plates (301). A protective cover (316) is fixedly connected to one side of the top plate (308). A motor (319) is fixedly connected to the inner wall of the protective cover (316). A limiting groove (309) is formed on the inner wall of the top plate (308). A sliding connection is made to the inner wall of the limiting groove (309). Two sliders (310) are connected to a lead screw (311) rotatably on the inner wall of the limiting groove (309). The lead screw (311) is rotatably connected to the top plate (308). The arc surfaces at both ends of the lead screw (311) are provided with opposite threads. The lead screw (311) is fixedly connected to the output end of the motor (319). The lead screw (311) is threadedly connected to the slider (310). A connecting frame (315) is fixedly connected to the lower surface of the slider (310). The connecting frame (315) is rotatably connected to the connecting plate (314).

2. A downstack platen pressure balancing mechanism as claimed in claim 1, wherein, The inner wall of the limiting groove (309) is fixedly connected to two limiting rods (312), and the limiting rods (312) are slidably connected to the slider (310).

3. The downstack platen pressure balancing mechanism of claim 1, wherein, The inner wall of the protective cover (316) is provided with a plurality of heat dissipation holes (317), and the plurality of heat dissipation holes (317) are evenly provided on the protective cover (316).

4. The downstack platen pressure balancing mechanism of claim 1, wherein, A protective pad (307) is fixedly connected to the inner wall of the side plate (301), and the protective pad (307) abuts against the extrusion block (306).

5. The downstack platen pressure balancing mechanism of claim 1, wherein, The connecting plate (314) is made of stainless steel.

6. The downstack platen pressure balancing mechanism of claim 1, wherein, The spring (304) has a bellows (305) fitted on its arc surface, and the two ends of the bellows (305) are fixedly connected to the pressing block (306) and the moving block (302) respectively.

7. The downstack platen pressure balancing mechanism of claim 1, wherein, The inner wall of the connecting plate (318) is provided with a cleaning structure (4). The cleaning structure (4) includes two auxiliary rods (41), a first gear (44), and a mounting plate (46). The two auxiliary rods (41) are slidably connected to the connecting plate (318). The first gear (44) is rotatably connected to the connecting plate (318). The mounting plate (46) is fixedly connected to the connecting plate (318). A motor (47) is fixedly connected to one side of the mounting plate (46). A second gear (48) is fixedly connected to the output end of the motor (47). The first gear (44) and the second gear (48) mesh. A threaded rod (45) is threadedly connected to the inner wall of the first gear (44). The threaded rod (45) is slidably connected to the connecting plate (318). A squeezing plate (42) is fixedly connected to the lower end of the two auxiliary rods (41). The squeezing plate (42) is fixedly connected to the threaded rod (45). A cleaning cotton (43) is fixedly connected to the lower surface of the squeezing plate (42).

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