Linkage adjusting mechanism and method for roller spacing and pressure detection and three-roller machine

Abstract

The invention relates to the technical field of rolling equipment, in particular to a linkage adjusting mechanism for roller spacing and pressure detection, an adjusting method and a three-roller machine, the adjusting mechanism achieves precise adjustment of the roller spacing through linkage of a supporting seat, a bearing seat, a connecting rod assembly and a linear driving part, and pressure is monitored in real time through a pressure sensor on a connecting rod. The three-roller machine is integrated with the adjusting mechanism and further comprises a rotation driving mechanism for driving the rollers to rotate and a feeding and discharging component. According to the adjusting method, by fixing or driving the linear driving piece and the bearing seat, roller distance adjustment and pressure real-time monitoring are achieved. The device solves the problems that traditional equipment is low in adjusting precision, lags behind pressure detection and the like, has the advantages of being good in adjusting synchronism, timely in pressure feedback and wide in application range, and can be used for material rolling and dispersion machining.

Description

Technical Field

[0001] This invention relates to the field of roller pressing equipment technology, specifically to a linkage adjustment mechanism and adjustment method for detecting roller spacing and pressure, and a three-roll mill. Background Technology

[0002] In material processing in industries such as rubber, plastics, coatings, and inks, three-roll mills are commonly used key equipment. They achieve grinding, dispersing, or crushing of materials through the relative rotation and pressure between three rollers. The spacing and pressure between the rollers are core parameters affecting processing quality. Traditional three-roll mill adjustment methods have the following problems: Low spacing adjustment accuracy: Existing equipment mostly uses manual worm gear or single bearing seat structure to adjust the roller spacing. During the adjustment process, the spacing at both ends is prone to be inconsistent, resulting in uneven force on the material and affecting the uniformity of the product. Pressure detection lag: Traditional pressure feedback relies on experience or indirect measurement (such as calculation through drive motor current), which cannot detect the actual pressure between rollers in real time and is prone to over-pressure or under-pressure of materials due to pressure fluctuations. Poor synchronization of adjustment: When adjusting multiple rollers, the drive mechanism of each roller is controlled independently, lacking a linkage mechanism, making it difficult to ensure the parallelism of the rollers during the adjustment process. In particular, jamming or deviation is prone to occur when adjusting multiple rollers in linkage. Complex structure and cumbersome operation: In order to achieve multi-parameter adjustment, some equipment uses multiple sets of independent drive components, resulting in a bulky structure, cumbersome adjustment steps, and high maintenance costs. Limited applicability: The roller speed ratio of traditional mechanisms is fixed and cannot be flexibly adjusted according to the characteristics of materials, making it difficult to meet the processing needs of materials with different viscosities and hardnesses. Summary of the Invention

[0003] The purpose of this invention is to provide a linkage adjustment mechanism, adjustment method, and three-roll mill for detecting roller spacing and pressure, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a linkage adjustment mechanism for roller spacing and pressure detection, comprising a support base and a first roller and a second roller mounted on the support base. The axes of the first roller and the second roller are parallel to each other. A first bearing seat is rotatably connected to both ends of the first roller along its axial direction, and a second bearing seat is rotatably connected to both ends of the second roller along its axial direction. The outer peripheral ends of the first bearing seat and the second bearing seat near their respective roller shafts are hinged to the support base by fixing pins. A first connecting rod is rotatably mounted on the outer peripheral end of the first bearing seat away from the first roller shaft. The end of the first connecting rod away from the second bearing seat is connected to the output end of a first linear drive member through a first lifting connecting rod. The first linear drive member is used to drive one end of the first connecting rod to move up and down. A second connecting rod is rotatably connected to the end of the first connecting rod near the second bearing seat, and the end of the second connecting rod away from the first connecting rod is rotatably connected to the outer peripheral end of the second bearing seat away from the second roller shaft. A pressure sensor is mounted on the second connecting rod for detecting the pressure between the first roller and the second roller.

[0005] Furthermore, it also includes a third roller and a third bearing seat rotatably connected to both ends of the third roller along its axial direction. The axis of the third roller is parallel to the first roller and is located on the side of the second roller away from the first roller. The outer peripheral end of the third bearing seat near the rotating shaft of the third roller is hinged to a support seat by a fixing pin. A fourth connecting rod is rotatably mounted on the outer peripheral end of the third bearing seat away from the rotating shaft of the third roller. The end of the fourth connecting rod away from the second bearing seat is connected to a second linear drive member through a second lifting connecting rod. The second linear drive member is used to drive one end of the fourth connecting rod to move up and down. A third connecting rod is rotatably connected to the end of the fourth connecting rod near the second bearing seat, and the end of the third connecting rod away from the fourth connecting rod is rotatably connected to the outer peripheral end of the second bearing seat away from the rotating shaft of the second roller. The connection ends of the second and third connecting rods and the second bearing seat are coaxial. A pressure sensor is mounted on the third connecting rod to detect the pressure between the second roller and the third roller.

[0006] Furthermore, both the first linear drive and the second linear drive include a cylinder or hydraulic cylinder vertically mounted on the support base, and a stepper motor or pneumatic stepper motor for driving the cylinder or hydraulic cylinder to rise and fall.

[0007] Furthermore, the support base is provided with a locking device for fixing the third bearing housing.

[0008] A method for adjusting a linkage adjustment mechanism for roller spacing and pressure detection includes the following steps: The third bearing seats at both ends of the third roller are fixed, and the second linear drive is driven to move. Its output end pushes one end of the fourth link to move up and down through the second lifting link. The fourth link drives the second bearing seat to swing around the fixed pin through the third link. The second bearing seat then drives the first bearing seat to swing synchronously through the second link, so that the first roller and the second roller translate relative to the third roller, thereby adjusting the distance between the third roller and the second roller. The pressure is monitored by the pressure sensor on the third link. Keep the third bearing seat and the second linear drive fixed, drive the first linear drive to move, and its output end pushes one end of the first connecting rod to move up and down through the first lifting connecting rod. The first connecting rod drives the first bearing seat to swing around the fixed pin, thereby adjusting the distance between the first roller and the second roller. The pressure is monitored by the pressure sensor on the second connecting rod.

[0009] A three-roll mill includes a linkage adjustment mechanism for detecting the roller spacing and pressure.

[0010] Furthermore, the support base is provided with a rotary drive mechanism, which is used to drive the first roller, the second roller and the third roller to rotate, and the rotation direction of the second roller is opposite to that of the first roller and the third roller.

[0011] Furthermore, the rotary drive mechanism includes a first gear, a second gear, a third gear, a fourth gear, and a rotary drive module. The first gear and the second gear are respectively fixed to the axially adjacent ends of the first roller and the second roller and mesh with each other. The third gear is fixed to the other axial end of the second roller. The fourth gear is fixed to the axial end of the third roller close to the third gear and meshes with the third gear. The output shaft of the rotary drive module is connected to the rotating shaft of the first roller, the second roller, or the third roller, and drives the remaining rollers to rotate through gear meshing.

[0012] Furthermore, the transmission speed ratio between the first roller, the second roller, and the third roller is 1:2.5-3.5:6-13.

[0013] Furthermore, feed baffles are provided at both ends of the first and second rollers along the axial direction, and a discharge hopper is installed at the end of the support base that is inclined downwards near the third roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are: High-precision parallelism control and spacing adjustment: A collaborative control method is adopted, combining independent adjustment at both ends of the axis with real-time comparison using pressure sensors. By synchronously driving the linear actuators at both ends and independently fine-tuning the deviation, the pressure difference between the two ends of the roller axis is always controlled within a set threshold, achieving micron-level parallelism assurance. Simultaneously, based on the precision displacement control of the stepper motor and the rigid transmission of the linkage assembly, the roller spacing is precisely adjusted, solving the problem of uneven material force caused by inconsistent spacing at both ends in traditional equipment.

[0015] Real-time monitoring and feedback of roller pressure: Pressure sensors are directly integrated into the second and third connecting rods, enabling real-time detection of the actual pressure between the rollers and solving the lag problem of traditional indirect measurement methods. The pressure signal can be directly used for closed-loop control, achieving automatic pressure compensation and stable control, and improving product quality consistency. Simplified structure and improved adjustment efficiency: The first and second linear drive components drive multiple sets of bearing seats in linkage via lifting links and link assemblies, replacing the traditional multiple independent drive mechanisms and simplifying the overall structure. Simultaneously, the "fixed-adjustment" linkage logic (e.g., fixing one set of drive components allows adjustment of the corresponding roller spacing) reduces operating steps and improves adjustment efficiency. Enhancing equipment applicability and flexibility: The rotary drive mechanism achieves reverse rotation of the rollers through gear meshing, and the transmission speed ratio can be set to 1:2.5-3.5:6-13 by adjusting the gear parameters to adapt to the processing needs of materials with different viscosities and hardnesses. In addition, the matching design of the feed baffle and discharge hopper can reduce material splashing and optimize the material conveying path, further expanding the application scenarios of the equipment. Enhanced operational safety and stability: The linear drive unit adopts a combination of pneumatic / hydraulic cylinders and stepper motors to achieve dual protection of power and precision; the fixed pin connection between the bearing housing and the support housing ensures the structural stability of the roller during adjustment and operation, reducing the risk of adjustment deviation caused by mechanical vibration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the bearing housing assembly structure of the present invention; Figure 4 This is a schematic diagram of the bearing housing connection structure of the present invention; Figure 5 This is a schematic diagram of the three-dimensional structure of the support base of the present invention; Figure 6 This is a schematic diagram of the second mounting configuration of the roller according to the present invention; Figure 7This is a schematic diagram of the third mounting configuration of the roller according to the present invention; Figure 8 This is a schematic diagram of the fourth installation configuration of the roller according to the present invention.

[0017] In the diagram: 1. First roller; 2. Second roller; 3. Third roller; 4. Support base; 401. Base plate; 402. Vertical plate; 403. Rotating groove; 404. Pin hole; 405. Arc-shaped sliding groove; 406. Connecting plate; 5. Rotary drive mechanism; 501. First gear; 502. Second gear; 503. Third gear; 504. Fourth gear; 505. Rotary drive module; 6. First bearing seat; 7. Second bearing seat; 8. Third bearing seat; 9. First lifting link; 10. First linear drive component; 11. First connecting rod; 12. Second connecting rod; 13. Third connecting rod; 14. Pressure sensor; 15. Fourth connecting rod; 16. Second lifting link; 17. Second linear drive component; 18. Fixing pin; 19. Feed baffle; 20. Discharge hopper; 21. Locking device. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the present invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. The term "comprising" and any variations thereof in the specification, claims, and accompanying drawings are intended to cover non-exclusive inclusion.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," 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 this invention and simplifying the description, and do not indicate or imply that the device or component 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 this invention.

[0020] Example 1, please refer to Figure 1-5 The linkage adjustment mechanism for roller spacing and pressure detection includes a support base 4 and a first roller 1, a second roller 2, and a third roller 3 mounted on the support base 4. In the initial position, the first roller 1, the second roller 2, and the third roller 3 are at the same height. For example... Figure 5 As shown, the support base 4 includes a horizontally arranged base plate 401, two vertical plates 402 that are parallel and vertically fixed to the top of the base plate 401, and rotating grooves 403 that are respectively fixed to the opposite ends of the vertical plates 402. The two vertical plates 402 are fixedly connected at opposite ends by a connecting plate 406 to enhance the overall rigidity of the support base 4.

[0021] The axes of the first roller 1, the second roller 2, and the third roller 3 are parallel to each other, with the second roller 2 located between the first roller 1 and the third roller 3. The first roller 1 is rotatably connected to the first bearing seat 6 at both ends of its axial direction via bearings, the second roller 2 is rotatably connected to the second bearing seat 7 at both ends of its axial direction via bearings, and the third roller 3 is rotatably connected to the third bearing seat 8 at both ends of its axial direction via bearings. In this embodiment, each roller has a symmetrical structure and the same size, and each bearing seat has a consistent structure and the same size. The first roller 1, the second roller 2, and the third roller 3 are all rotatably mounted between two vertical plates 402. The first bearing seat 6, the second bearing seat 7, and the third bearing seat 8 are rotatably mounted inside the rotating groove 403 by fixing pins 18. The side walls of the vertical plates 402 and the rotating groove 403 are provided with pin holes 404 that are adapted to the fixing pins 18. The top of the vertical plate 402 is provided with three arc-shaped sliding grooves 405, which respectively accommodate the rotating shafts of the first roller 1, the second roller 2, and the third roller 3. The arc of the sliding groove is adapted to the rotation trajectory of the corresponding bearing seat, ensuring that the roller shaft slides smoothly along the sliding groove when it swings with the bearing seat, avoiding jamming.

[0022] like Figure 5 As shown, in this embodiment, the support base 4 is provided with a locking device 21 for fixing the third bearing seat 8. In this embodiment, the locking device 21 is specifically a bolt installed on the support base 4 through a mounting plate, which is used to ensure that the axis of the third roller 3 remains fixed during operation.

[0023] The outer peripheral ends of the first bearing housing 6, the second bearing housing 7, and the third bearing housing 8 near their respective roller shafts are all connected to the pin holes 404 of the support base 4 via fixing pins 18, and their outer peripheral ends away from the roller shafts are rotatably connected to corresponding connecting rods. Specifically, a first connecting rod 11 is rotatably mounted on the outer peripheral end of the first bearing housing 6 away from the first roller 1 shaft. One end of the first connecting rod 11 away from the second bearing housing 7 is connected to the output end of the first linear drive member 10 via a first lifting connecting rod 9. The first linear drive member 10 is used to drive one end of the first connecting rod 11 to move up and down. The first linear drive member 10 is vertically mounted on the top of the base plate 401 of the support base 4, and its output end is rotatably connected to one end of the first lifting connecting rod 9 along its length. The other end of the first lifting connecting rod 9 along its length is rotatably connected to the first connecting rod 11. A second connecting rod 12 is rotatably connected to the end of the first connecting rod 11 near the second bearing housing 7, and the connection point between the first bearing housing 6 and the first connecting rod 11 is located between the connection points of the first connecting rod 11 and the first lifting connecting rod 9 and the second connecting rod 12. The end of the second connecting rod 12 away from the first connecting rod 11 is rotatably connected to the outer peripheral end of the second bearing seat 7 away from the rotating shaft of the second roller 2. A pressure sensor 14 is provided on the second connecting rod 12 for real-time detection of the pressure between the first roller 1 and the second roller 2.

[0024] A fourth connecting rod 15 is rotatably mounted on the outer periphery of the third bearing seat 8 away from the rotating shaft of the third roller 3. One end of the fourth connecting rod 15 away from the second bearing seat 7 is connected to the second linear drive member 17 through the second lifting connecting rod 16. The second linear drive member 17 is used to drive one end of the fourth connecting rod 15 to move up and down. The second linear drive member 17 is vertically mounted on the top of the base plate 401 of the support seat 4. Its output end is rotatably connected to one end of the second lifting connecting rod 16 in the length direction, and the other end of the second lifting connecting rod 16 in the length direction is rotatably connected to the fourth connecting rod 15. The end of the fourth connecting rod 15 near the second bearing seat 7 is rotatably connected to the third connecting rod 13, and the end of the third connecting rod 13 away from the fourth connecting rod 15 is rotatably connected to the outer peripheral end of the second bearing seat 7 away from the rotating shaft of the second roller 2. The connection point between the second bearing seat 7 and the fourth connecting rod 15 is located between the connection points of the fourth connecting rod 15 and the second lifting connecting rod 16 and the third connecting rod 13. The connection ends of the second connecting rod 12 and the third connecting rod 13 to the second bearing seat 7 are coaxial. The third connecting rod 13 is also equipped with a pressure sensor 14 for real-time detection of the pressure between the second roller 2 and the third roller 3. By setting pressure sensors 14 at both ends of the roller axial direction, the readings at both ends can be used to determine whether the distance between the two rolling ends is consistent, thereby ensuring the parallelism of each roller.

[0025] The coaxial connection between the second link 12 and the third link 13 and the second bearing seat 7, as well as the specific layout of each hinge point, ensures that when the first linear drive 10 or the second linear drive 17 is activated, the first bearing seat 6 and the second bearing seat 7 can generate coordinated swinging motion around their respective fixed pins 18, thereby ensuring that the first roller 1 and the second roller 2 always maintain parallel movement.

[0026] like Figure 3 As shown, both the first linear drive unit 10 and the second linear drive unit 17 include a cylinder or hydraulic cylinder vertically mounted on the support base 4, and a stepper motor or pneumatic stepper motor to drive their lifting and lowering. Precision displacement adjustment is achieved by driving the cylinder / hydraulic cylinder with the stepper motor / pneumatic stepper motor, which then pushes the corresponding rollers to press against each other through the bearing housing; simultaneously, the cylinder or hydraulic cylinder can automatically release pressure through an internal pressure valve to avoid mechanical damage caused by rigid contact between the rollers.

[0027] Based on the same inventive concept, this embodiment also proposes an adjustment method for a linkage adjustment mechanism for roller spacing and pressure detection, including the following steps: The locking device 21 fixes the third bearing seats 8 at both ends of the third roller 3, driving the second linear drive 17 to move. Its output end pushes one end of the fourth link 15 up and down through the second lifting link 16. The fourth link 15 drives the second bearing seat 7 to swing around the fixing pin 18 through the third link 13. The second bearing seat 7 then drives the first bearing seat 6 to swing synchronously through the second link 12, so that the first roller 1 and the second roller 2 translate relative to the third roller 3, thereby adjusting the distance between the third roller 3 and the second roller 2. The pressure is monitored by the pressure sensor 14 on the third link 13.

[0028] Keep the third bearing seat 8 and the second linear drive 17 fixed, drive the first linear drive 10 to move, and its output end pushes one end of the first connecting rod 11 to move up and down through the first lifting connecting rod 9. The first connecting rod 11 drives the first bearing seat 6 to swing around the fixed pin 18, thereby adjusting the distance between the first roller 1 and the second roller 2; the pressure is monitored by the pressure sensor 14 on the second connecting rod 12.

[0029] Based on the same inventive concept, this embodiment also proposes a three-roll mill, including the above-mentioned linkage adjustment mechanism for roller spacing and pressure detection, and a rotation drive mechanism 5 for driving the first roller 1, the second roller 2 and the third roller 3 to rotate, wherein the rotation direction of the second roller 2 is opposite to that of the first roller 1 and the third roller 3.

[0030] like Figure 1-2As shown, the rotary drive mechanism 5 includes a first gear 501, a second gear 502, a third gear 503, a fourth gear 504, and a rotary drive module 505. The first gear 501 and the second gear 502 are keyed to adjacent axial ends of the first roller 1 and the second roller 2, respectively, and mesh with each other. The third gear 503 is keyed to the other axial end of the second roller 2, and the fourth gear 504 is keyed to the axial end of the third roller 3 near the third gear 503, and mesh with each other. The output shaft of the rotary drive module 505 can be selectively connected to the rotating shaft of the first roller 1, the second roller 2, or the third roller 3. In this embodiment, it is preferably connected to the rotating shaft of the third roller 3, which includes a servo motor mounted on the base plate 401 of the support 4, a drive wheel keyed to the motor output end, and a driven wheel keyed to one axial end of the third roller 3. The drive wheel and the driven wheel are driven by a synchronous belt. Alternatively, sprocket and chain drive or direct gear meshing drive can be used to adapt to the transmission requirements under different working conditions. At this time, the three rollers are driven to rotate through the meshing chain of the fourth gear 504, the third gear 503, the second gear 502, and the first gear 501; if the output shaft is connected to the second roller 2, the first roller 1 and the third roller 3 can be driven directly through the gears on both sides respectively, and the transmission principle is the same.

[0031] The output shaft of the rotary drive module 505 is connected to the rotating shaft of the third roller 3 via a transmission connection. When the rotary drive module 505 is working, it drives the third roller 3 to rotate; the fourth gear 504 meshes with the third gear 503, driving the second roller 2 and the third roller 3 to rotate in opposite directions; the second gear 502 meshes with the first gear 501, thereby driving the first roller 1 and the second roller 2 to rotate in opposite directions; the transmission speed ratio between the first roller 1, the second roller 2 and the third roller 3 is 1:2.5-3.5:6-13.

[0032] It should be noted that this adjustment mechanism will not affect the normal operation of the gear transmission system when adjusting the roller spacing. The core guarantee is as follows: Gear meshing fit design: When selecting the first gear 501, the second gear 502, the third gear 503, and the fourth gear 504, the center distance change corresponding to the maximum adjustment stroke of the roller is reserved. The meshing clearance and tolerance range can cover the slight center distance change during the adjustment process to ensure continuous transmission.

[0033] Matching of bearing housing swing trajectory: The swing trajectory of the first bearing housing 6, the second bearing housing 7, and the third bearing housing 8 around the fixed pin 18 is precisely calculated. The relative position of the rotation center and the gear meshing point is constant, and the change of meshing angle is controlled within the allowable error to avoid transmission jamming.

[0034] To facilitate loading and unloading, feed baffles 19 are provided at both ends of the first roller 1 and the second roller 2 via brackets, and a discharge hopper 20 is installed at the end of the support base 4 that is inclined downward near the third roller 3.

[0035] Working principle: Calibration phase: Before starting, by adjusting the first linear drive 10 and the second linear drive 17, the readings of the pressure sensors 14 on the second connecting rod 12 (or the third connecting rod 13) at both ends of the same axial direction are made consistent, ensuring that the axial distance between the first roller 1 and the second roller 2, and between the second roller 2 and the third roller 3 is uniform, thus eliminating installation errors; Processing stage: The material is guided by the feed baffle 19 to the space between the first roller 1 and the second roller 2. The distance between the two rollers is adjusted to the set value by the first linear drive component 10. The pressure sensor 14 monitors the crushing pressure in real time. The rotary drive mechanism 5 drives the three rollers to rotate in opposite directions according to the set speed ratio. After the material is initially crushed, it enters the space between the second roller 2 and the third roller 3 for further processing and is finally discharged from the discharge hopper 20.

[0036] Work mode: Separation mode: The first roller 1, the second roller 2, and the third roller 3 are all separated and maintain a certain distance, which is suitable for equipment maintenance, initial debugging, and material switching.

[0037] Mixing mode: The third roller 3 and the second roller 2 maintain a certain large gap, and the first roller 1 and the second roller 2 are in pressure mixing mode, maintaining constant pressure. It is suitable for the premixing of multi-component materials. The material is uniformly dispersed by pressure extrusion without fine grinding. Typical applications include homogenization of cosmetic pastes and preliminary mixing of lithium battery slurries. Alternatively, the gap mixing mode is maintained between the first roller 1 and the second roller 2. It is suitable for stirring and mixing low-viscosity materials (such as paint color paste preparation). Mixing is achieved by the shearing force generated by the reverse rotation of the rollers, avoiding excessive pressure that may cause material splashing. Typical applications include water-based ink color matching and adhesive base material mixing.

[0038] Grinding modes: The first roller 1, the second roller 2, and the third roller 3 are all in pressure mode, suitable for ultrafine grinding of high-hardness materials (such as ceramic powder and metal powder). Two-stage pressure extrusion reduces particle size from micrometers to nanometers. Typical applications include grinding electronic pastes and ultrafine processing of pharmaceutical intermediates. The first roller 1 and the second roller 2 are in gap mode, while the second roller 2 and the third roller 3 are in pressure mode. This is suitable for materials that are first screened and then ground (such as coatings containing coarse particles). The gap between the first roller 1 and the second roller 2 is used to filter large impurities, while the pressure between the second roller 2 and the third roller 3 is used to refine qualified particles. Typical applications include removing impurities from inks and micronization of cosmetic concealers. The first roller 1 and the second roller 2, and the second roller 2 and the third roller 3 are all in gap mode, suitable for precision machining with extremely high particle size distribution requirements (such as optical thin film coating materials). A fixed gap controls material thickness, and a high rotational speed ratio achieves uniform shearing. Typical applications include grinding photoresist for liquid crystal displays and preparing coatings for aerospace materials.

[0039] Feedback adjustment: If the pressure sensor 14 detects that the pressure deviates from the set value or the difference in readings at both ends of the axial direction exceeds the threshold, the control system immediately adjusts the roller spacing through the first linear drive 10 or the second linear drive 17 to ensure that the material is subjected to uniform force and maintain processing accuracy.

[0040] Example 2, as Figure 6-7 As shown, the difference between this embodiment and Embodiment 1 lies in the installation method of the roller. In this case, adaptive adjustments need to be made to the structure of the support base 4 and the installation methods of the first linear drive component 10 and the second linear drive component 17, such as... Figure 6 As shown, the second roller 2 is positioned above one side of the first roller 1, and the third roller 3 is positioned above the side of the second roller 2 away from the first roller 1; Figure 7 As shown, the first roller 1 and the second roller 2 are at the same height, and the third roller 3 is positioned above the second roller 2 on the side away from the first roller 1. Figure 6-7 In the installation configuration shown, both the first linear drive unit 10 and the second linear drive unit 17 are vertically positioned, and the height of the vertical plate 402 is adjusted accordingly. For example... Figure 8 In the installation configuration shown, the first roller 1 is positioned directly above the third roller 3, and the second roller 2 is positioned on one side between the first roller 1 and the third roller 3. In this case, the support base 4, the first linear drive component 10, and the second linear drive component 17 need to be rotated 90 degrees as a whole. The connection method and driving principle of the remaining connecting rods are the same as in Embodiment 1, and will not be described in detail here.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A linkage adjustment mechanism for detecting roller spacing and pressure, comprising a support base (4) and a first roller (1) and a second roller (2) mounted on the support base (4), wherein the axes of the first roller (1) and the second roller (2) are parallel to each other, characterized in that, The first roller (1) is rotatably connected to the first bearing seat (6) at both ends of its axial direction, and the second roller (2) is rotatably connected to the second bearing seat (7) at both ends of its axial direction. The outer peripheral ends of the first bearing seat (6) and the second bearing seat (7) near their respective roller shafts are hinged to the support seat (4) by fixing pins (18). The outer peripheral end of the first bearing seat (6) away from the first roller (1) shaft is rotatably provided with a first connecting rod (11). The end of the first connecting rod (11) away from the second bearing seat (7) is connected to the first bearing seat (4) by a first lifting connecting rod (9). The output end of a linear drive unit (10) is connected to drive one end of the first connecting rod (11) to move up and down. The end of the first connecting rod (11) near the second bearing seat (7) is rotatably connected to the second connecting rod (12), and the end of the second connecting rod (12) away from the first connecting rod (11) is rotatably connected to the outer peripheral end of the second bearing seat (7) away from the second roller (2) shaft. A pressure sensor (14) is provided on the second connecting rod (12) to detect the pressure between the first roller (1) and the second roller (2).

2. The linkage adjustment mechanism for roller spacing and pressure detection according to claim 1, characterized in that, It also includes a third roller (3) and a third bearing seat (8) rotatably connected to both ends of the third roller (3) along its axial direction. The axis of the third roller (3) is parallel to the first roller (1) and is located on the side of the second roller (2) away from the first roller (1). The outer peripheral end of the third bearing seat (8) near the rotating shaft of the third roller (3) is hinged to the support seat (4) by a fixing pin (18). A fourth connecting rod (15) is rotatably provided on the outer peripheral end of the third bearing seat (8) away from the rotating shaft of the third roller (3). The end of the fourth connecting rod (15) away from the second bearing seat (7) is connected to the second linear drive unit through a second lifting connecting rod (16). (17) Connection, the second linear drive (17) is used to drive one end of the fourth link (15) to move up and down. The end of the fourth link (15) near the second bearing seat (7) is rotatably connected to the third link (13), and the end of the third link (13) away from the fourth link (15) is rotatably connected to the outer peripheral end of the second bearing seat (7) away from the second roller (2) shaft. The connection ends of the second link (12) and the third link (13) with the second bearing seat (7) are coaxial. A pressure sensor (14) is provided on the third link (13) to detect the pressure between the second roller (2) and the third roller (3).

3. The linkage adjustment mechanism for roller spacing and pressure detection according to claim 2, characterized in that, The first linear drive (10) and the second linear drive (17) both include a cylinder or hydraulic cylinder mounted vertically on the support base (4), and a stepper motor or pneumatic stepper motor for driving the cylinder or hydraulic cylinder to rise and fall.

4. The linkage adjustment mechanism for roller spacing and pressure detection according to claim 2, characterized in that, The support base (4) is provided with a locking device (21) for fixing the third bearing housing (8).

5. An adjustment method for the linkage adjustment mechanism for detecting roller spacing and pressure as described in any one of claims 2-4, characterized in that, Includes the following steps: The third bearing seats (8) at both ends of the third roller (3) are fixed, and the second linear drive (17) is driven to move. Its output end pushes one end of the fourth link (15) to move up and down through the second lifting link (16). The fourth link (15) drives the second bearing seat (7) to swing around the fixed pin (18) through the third link (13). The second bearing seat (7) then drives the first bearing seat (6) to swing synchronously through the second link (12), so that the first roller (1) and the second roller (2) translate relative to the third roller (3), thereby adjusting the distance between the third roller (3) and the second roller (2). The pressure is monitored by the pressure sensor (14) on the third link (13). Keep the third bearing seat (8) and the second linear drive (17) fixed, drive the first linear drive (10) to move, and its output end pushes one end of the first link (11) to move up and down through the first lifting link (9). The first link (11) drives the first bearing seat (6) to swing around the fixed pin (18) to adjust the distance between the first roller (1) and the second roller (2). The pressure is monitored by the pressure sensor (14) on the second link (12).

6. A three-roll mill, characterized in that, Includes the linkage adjustment mechanism for roller spacing and pressure detection as described in any one of claims 2-4.

7. The three-roll mill according to claim 6, characterized in that, The support base (4) is provided with a rotary drive mechanism (5), which is used to drive the first roller (1), the second roller (2) and the third roller (3) to rotate, and the second roller (2) rotates in the opposite direction to the first roller (1) and the third roller (3).

8. The three-roll mill according to claim 7, characterized in that, The rotary drive mechanism (5) includes a first gear (501), a second gear (502), a third gear (503), a fourth gear (504), and a rotary drive module (505). The first gear (501) and the second gear (502) are respectively fixed to the axially adjacent ends of the first roller (1) and the second roller (2) and mesh with each other. The third gear (503) is fixed to the other axial end of the second roller (2). The fourth gear (504) is fixed to the axial end of the third roller (3) close to the third gear (503) and meshes with the third gear (503). The output shaft of the rotary drive module (505) is connected to the rotating shaft of the first roller (1), the second roller (2), or the third roller (3) and drives the remaining rollers to rotate through gear meshing.

9. The three-roll mill according to claim 8, characterized in that, The transmission speed ratio between the first roller (1), the second roller (2) and the third roller (3) is 1:2.5-3.5:6-13.

10. The three-roll mill according to claim 6, characterized in that, Feed baffles (19) are provided at both ends of the first roller (1) and the second roller (2) in the axial direction. The support base (4) is inclined downward at one end near the third roller (3) and a discharge hopper (20) is installed.

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