Roller spacing and pressure detection linkage adjustment mechanism, adjustment method and three-roll machine

Abstract

The present application relates to the technical field of roller pressing equipment, and particularly relates to a linkage adjusting mechanism for roller spacing and pressure detection, an adjusting method and a three-roller machine. The linkage adjusting mechanism realizes precise adjustment of the roller spacing through linkage of a supporting seat, a bearing seat, a connecting rod assembly and a linear driving element, and realizes real-time monitoring of the pressure through a pressure sensor on the connecting rod. The three-roller machine integrates the adjusting mechanism, and further comprises a rotary driving mechanism for driving rotation of each roller and an in-out material component. The adjusting method realizes adjustment of the roller spacing and real-time monitoring of the pressure by fixing or driving the linear driving element and the bearing seat. The present application solves the problems of low adjustment precision and lagging pressure detection of the traditional equipment, and has the characteristics of good adjustment synchronism, timely pressure feedback and wide application range, and can be used for material rolling and dispersion processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of roller pressing equipment, in particular to a linkage adjustment mechanism for roller spacing and pressure detection, an adjustment method and a three-roller machine. BACKGROUND

[0002] In the material processing process of rubber, plastic, paint, ink and other industries, three-roller machines are commonly used key equipment, which realize material grinding, dispersion or rolling through the relative rotation and pressure action between the three rollers. The spacing and pressure between the rollers are the core parameters affecting the processing quality. The traditional three-roller machine adjustment method has the following problems:

[0003] Low spacing adjustment accuracy: existing equipment mostly uses manual worm gear or single bearing seat structure to adjust the roller spacing, which is prone to inconsistent spacing at both ends during adjustment, resulting in uneven stress on the material and affecting product uniformity.

[0004] Pressure detection lag: traditional pressure feedback relies on experience judgment or indirect measurement (such as calculating through drive motor current), which cannot directly detect the actual pressure between the rollers in real time, and is prone to material overpressure or underpressure due to pressure fluctuations.

[0005] Poor adjustment synchronization: when adjusting multiple rollers, the drive mechanisms of each roller are independently controlled, lacking linkage mechanism, making it difficult to ensure roller parallelism during adjustment, especially prone to jamming or deviation during multi-roller linkage adjustment.

[0006] Complex structure and tedious operation: some equipment uses multiple independent drive components to achieve multi-parameter adjustment, resulting in bulky structure, tedious adjustment steps, and high maintenance cost.

[0007] Limited application scope: the roller speed ratio of traditional mechanisms is fixed and cannot be adjusted flexibly according to material characteristics, making it difficult to meet the processing needs of different viscosity and hardness materials. SUMMARY

[0008] The purpose of the present application is to provide a linkage adjustment mechanism for roller spacing and pressure detection, an adjustment method and a three-roller machine to solve the problems raised in the background.

[0009] In order to achieve the above object, the present application provides the following technical scheme: 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 first roller and the second roller are parallel to each other in the axial direction, the first roller is rotatably connected with a first bearing seat at both ends in the axial direction, the second roller is rotatably connected with a second bearing seat at both ends in the axial direction, the first bearing seat and the second bearing seat are hinged to the support base through a fixed pin close to the outer circumferential end of the respective roller shaft, the first bearing seat is rotatably provided with a first connecting rod away from the outer circumferential end of the first roller shaft, one end of the first connecting rod away from the second bearing seat is connected with the output end of a first linear drive through a first lifting connecting rod, the first linear drive is used to drive the first connecting rod to move up and down at one end, one end of the first connecting rod close to the second bearing seat is rotatably connected with a second connecting rod, and one end of the second connecting rod away from the first connecting rod is rotatably connected with the outer circumferential end of the second bearing seat away from the second roller shaft, and a pressure sensor is arranged on the second connecting rod for detecting the pressure between the first roller and the second roller.

[0010] Further, it further comprises a third roller and a third bearing seat rotatably connected at both ends in the axial direction of the third roller, the axis of the third roller is parallel to the first roller, and is located on the side away from the first roller of the second roller, the third bearing seat is hinged to the support base through a fixed pin close to the outer circumferential end of the third roller shaft, the third bearing seat is rotatably provided with a fourth connecting rod away from the outer circumferential end of the third roller shaft, one end of the fourth connecting rod away from the second bearing seat is connected with a second linear drive through a second lifting connecting rod, the second linear drive is used to drive the fourth connecting rod to move up and down at one end, one end of the fourth connecting rod close to the second bearing seat is rotatably connected with a third connecting rod, and one end of the third connecting rod away from the fourth connecting rod is rotatably connected with the outer circumferential end of the second bearing seat away from the second roller shaft, the connection end of the second connecting rod and the third connecting rod with the second bearing seat is coaxial, and a pressure sensor is arranged on the third connecting rod for detecting the pressure between the second roller and the third roller.

[0011] Further, the first linear drive and the second linear drive each comprise a cylinder or a hydraulic cylinder vertically mounted on the support base, and a stepping motor or a pneumatic stepping motor driving the cylinder or the hydraulic cylinder to lift.

[0012] Further, the support base is provided with a locking device for fixing the third bearing seat.

[0013] A method for adjusting a linkage adjustment mechanism for roller spacing and pressure detection, comprising the following steps:

[0014] The third bearing seat at both ends of the third roller is fixed, the second linear driving element is driven to act, and the output end thereof pushes the fourth connecting rod at one end to move up and down through the second lifting connecting rod; the fourth connecting rod drives the second bearing seat to swing around the fixed pin through the third connecting rod, and the second bearing seat drives the first bearing seat to swing synchronously through the second connecting rod, so that the first roller and the second roller translate relative to the third roller, the distance between the third roller and the second roller is adjusted, and the pressure is monitored through the pressure sensor on the third connecting rod.

[0015] The third bearing seat and the second linear driving element are fixed, the first linear driving element is driven to act, the output end thereof pushes the first connecting rod at one end 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, the distance between the first roller and the second roller is adjusted, and the pressure is monitored through the pressure sensor on the second connecting rod.

[0016] A three-roller machine comprises the linkage adjusting mechanism for roller distance and pressure detection.

[0017] Further, the support seat is provided with a rotary driving mechanism, the rotary driving mechanism is used for driving 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.

[0018] Further, the rotary driving mechanism comprises a first gear, a second gear, a third gear, a fourth gear and a rotary driving module, the first gear and the second gear are fixed at axially adjacent ends of the first roller and the second roller respectively and are engaged with each other, the third gear is fixed at the other axially adjacent end of the second roller, the fourth gear is fixed at one end of the third roller close to the third gear and is engaged with the third gear, and the output shaft of the rotary driving module is in transmission connection with the rotating shaft of the first roller, the second roller or the third roller, so as to drive the remaining rollers to rotate through gear engagement.

[0019] Further, the transmission speed ratio between the first roller, the second roller and the third roller is 1:2.5-3.5:6-13.

[0020] Further, the first roller and the second roller are provided with feeding baffles at axially opposite ends, and the support seat is provided with a discharging hopper which is installed obliquely downward at one end close to the third roller.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] High-precision parallelism control and spacing adjustment: The collaborative control mode of independent adjustment of the two ends of the axis and real-time comparison by pressure sensor is adopted, the deviation is independently fine-tuned by synchronously driving the two ends of the linear driving part, the pressure difference of the two ends of the roller shaft is always controlled within the set threshold, and the micron-level guarantee of the parallelism of the roller is realized. At the same time, based on the precise displacement control of the stepper motor and the rigid transmission of the connecting rod assembly, the spacing of the roller is accurately adjusted, and the problem of uneven stress of the material caused by the inconsistent spacing of the two ends of the traditional equipment is solved.

[0023] Real-time monitoring and feedback of roller pressure: The pressure sensor is directly integrated on the second connecting rod and the third connecting rod, which can detect the actual pressure between the rollers in real time, and solve the problem of hysteresis of the traditional indirect measurement method. The pressure signal can be directly used for closed-loop control to realize automatic compensation and stable control of the pressure and improve the consistency of product quality.

[0024] Simplify the structure and improve the adjustment efficiency: The first linear driving part and the second linear driving part drive multiple bearing seats through the lifting connecting rod and the connecting rod assembly, replacing the traditional multiple independent driving mechanism, which simplifies the overall structure. At the same time, through the linkage logic of "fixing-adjusting" (such as fixing a group of driving parts to adjust the spacing of the corresponding roller), the operation steps are reduced and the adjustment efficiency is improved.

[0025] Enhance the applicability and flexibility of the equipment: The rotating driving mechanism realizes the reverse rotation of the roller through gear meshing, and can set the transmission speed ratio of 1:2.5-3.5:6-13 by adjusting the gear parameters, which can adapt to the processing needs of materials with different viscosity and hardness. In addition, the matching design of the feeding baffle and the discharge hopper can reduce material splashing and optimize the material conveying path, further expanding the application scenarios of the equipment.

[0026] Improve the operation safety and stability: The combination of air cylinder / hydraulic cylinder and stepper motor is adopted for the linear driving part to realize the dual protection of power and precision; the fixed pin connection mode of the bearing seat and the support seat ensures the structural stability of the roller during adjustment and work, and reduces the risk of adjustment deviation caused by mechanical vibration. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the first schematic diagram of the three-dimensional structure of the present application;

[0028] Figure 2 It is the second schematic diagram of the three-dimensional structure of the present application;

[0029] Figure 3 It is the schematic diagram of the bearing seat assembly structure of the present application;

[0030] Figure 4 It is the schematic diagram of the bearing seat connection structure of the present application;

[0031] Figure 5A schematic view of a three-dimensional structure of the support seat of the present application;

[0032] Figure 6 A schematic view of a second mounting form of the roller of the present application;

[0033] Figure 7 A schematic view of a third mounting form of the roller of the present application;

[0034] Figure 8 A schematic view of a fourth mounting form of the roller of the present application.

[0035] In the figure: 1, first roller; 2, second roller; 3, third roller; 4, support seat; 401, bottom plate; 402, vertical plate; 403, rotating groove; 404, pin hole; 405, arc-shaped sliding groove; 406, connecting plate; 5, rotating drive mechanism; 501, first gear; 502, second gear; 503, third gear; 504, fourth gear; 505, rotating drive module; 6, first bearing seat; 7, second bearing seat; 8, third bearing seat; 9, first lifting connecting rod; 10, first linear drive; 11, first connecting rod; 12, second connecting rod; 13, third connecting rod; 14, pressure sensor; 15, fourth connecting rod; 16, second lifting connecting rod; 17, second linear drive; 18, fixing pin; 19, feeding baffle; 20, discharging hopper; 21, locking device. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be noted that, in the description of the present application, the terms “first”, “second”, and the like are merely used for the purpose of description and do not particularly indicate the order or sequence, nor do they limit the present application. They are merely used to distinguish components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with “first” and “second” can explicitly or implicitly include at least one of the features.

[0037] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connect", "set" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0038] Embodiment 1, please refer to Figures 1-5 The linkage adjusting mechanism for detecting the distance and pressure between the rollers comprises a supporting seat 4 and a first roller 1, a second roller 2 and a third roller 3 mounted on the supporting seat 4. In the initial position, the first roller 1, the second roller 2 and the third roller 3 are at the same height. As shown in Figure 5 The supporting seat 4 comprises a horizontal bottom plate 401, two vertical plates 402 fixed vertically and in parallel on the top end of the bottom plate 401, and rotating grooves 403 fixed respectively on the ends of the vertical plates 402 away from each other. The opposite ends of the two vertical plates 402 are fixedly connected by a connecting plate 406 to enhance the overall rigidity of the supporting seat 4.

[0039] The axes of the first roller 1, the second roller 2 and the third roller 3 are parallel to each other, and the second roller 2 is located between the first roller 1 and the third roller 3. The first roller 1 is rotatably connected by bearings at both axial ends with a first bearing seat 6, the second roller 2 is rotatably connected by bearings at both axial ends with a second bearing seat 7, and the third roller 3 is rotatably connected by bearings at both axial ends with a third bearing seat 8. In this embodiment, the structures of the rollers are symmetrical and the sizes are the same, and the structures of the bearing seats are consistent and the sizes are the same. The first roller 1, the second roller 2 and the third roller 3 are all rotatably arranged between the two vertical plates 402, the first bearing seat 6, the second bearing seat 7 and the third bearing seat 8 are rotatably arranged inside the rotating grooves 403 through fixed pins 18, and the vertical plates 402 and the side walls of the rotating grooves 403 are both provided with pin holes 404 matched with the fixed pins 18. The top end of the vertical plate 402 is provided with three arc-shaped sliding grooves 405 for accommodating the rotating shafts of the first roller 1, the second roller 2 and the third roller 3 respectively, and the sliding groove arc is matched with the rotating track of the corresponding bearing seat to ensure that the roller rotating shaft slides smoothly along the sliding groove when the bearing seat swings, avoiding jamming.

[0040] As shown in Figure 5As shown, in this embodiment, the support seat 4 is provided with a locking device 21 for fixing the third bearing seat 8, which in this embodiment is a bolt installed on the support seat 4 through a mounting plate, for ensuring that the third roller 3 axis remains fixed during operation.

[0041] The first bearing seat 6, the second bearing seat 7 and the third bearing seat 8 are connected to the pin hole 404 of the support seat 4 through a fixing pin 18 near the outer peripheral end of the respective roller shaft, and are rotatably connected to the corresponding connecting rod at the outer peripheral end away from the roller shaft. Specifically, the first bearing seat 6 is rotatably provided with a first connecting rod 11 at the outer peripheral end away from the first roller 1 shaft, and the first connecting rod 11 is connected to the output end of a first linear drive 10 through a first lifting connecting rod 9 at one end away from the second bearing seat 7, and the first linear drive 10 is used to drive the first connecting rod 11 to move up and down at one end. The first linear drive 10 is vertically installed at the top end of the bottom plate 401 of the support seat 4, and the output end is rotatably connected to one end of the first lifting connecting rod 9 in the length direction, and the other end of the first lifting connecting rod 9 in the length direction is rotatably connected to the first connecting rod 11. The first connecting rod 11 is rotatably connected to a second connecting rod 12 at one end close to the second bearing seat 7, and the connection point of the first bearing seat 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 second connecting rod 12 is rotatably connected to the outer peripheral end away from the second roller 2 shaft at one end away from the first connecting rod 11, and the second connecting rod 12 is provided with a pressure sensor 14 for real-time detection of the pressure between the first roller 1 and the second roller 2.

[0042] The third bearing seat 8 is rotatably provided with a fourth connecting rod 15 at the outer peripheral end away from the third roller 3 shaft, and the fourth connecting rod 15 is connected to a second linear drive 17 through a second lifting connecting rod 16 at one end away from the second bearing seat 7, and the second linear drive 17 is used to drive the fourth connecting rod 15 to move up and down at one end. The second linear drive 17 is vertically installed at the top end of the bottom plate 401 of the support seat 4, and the 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 fourth connecting rod 15 is rotatably connected to a third connecting rod 13 at one end close to the second bearing seat 7, and the third connecting rod 13 is rotatably connected to the outer peripheral end away from the second roller 2 shaft at one end away from the fourth connecting rod 15. The connection point of 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, and the connection ends of the second connecting rod 12 and the third connecting rod 13 and the second bearing seat 7 are coaxial. The third connecting rod 13 is also provided with a pressure sensor 14 for real-time detection of the pressure between the second roller 2 and the third roller 3. By providing pressure sensors 14 at both ends of the roller shaft, the consistency of the distance between the two ends of the roller can be determined according to the readings of the two ends, thereby ensuring the parallelism of each roller.

[0043] Through the coaxial connection of the second connecting rod 12 and the third connecting rod 13 with the second bearing seat 7, and the specific layout of each hinge point, it is ensured that the first bearing seat 6 and the second bearing seat 7 can produce coordinated swing movements around the respective fixed pins 18 when the first linear drive 10 or the second linear drive 17 is in action, so as to ensure that the first roller 1 and the second roller 2 always keep parallel movement.

[0044] As shown in Figure 3 The first linear drive 10 and the second linear drive 17 each include a pneumatic cylinder or a hydraulic cylinder vertically mounted on the support seat 4, and a stepping motor or a pneumatic stepping motor driving the lifting thereof. Precise displacement adjustment is realized through the stepping motor / pneumatic stepping motor driving the pneumatic cylinder / hydraulic cylinder, and then the corresponding rollers are pushed to be pressed against each other through the bearing seat; at the same time, the pneumatic cylinder or the hydraulic cylinder can realize automatic pressure relief through the internal pressure valve, so as to avoid mechanical damage caused by rigid contact between the rollers.

[0045] Based on the same inventive concept, the embodiment further proposes a regulating method of the linkage regulating mechanism for roller spacing and pressure detection, including the following steps:

[0046] The third bearing seat 8 at both ends of the third roller 3 is fixed through the locking device 21, the second linear drive 17 is driven to act, and the output end thereof pushes one end of the fourth connecting rod 15 to move up and down through the second lifting connecting rod 16; the fourth connecting rod 15 drives the second bearing seat 7 to swing around the fixed pin 18 through the third connecting rod 13, and the second bearing seat 7 drives the first bearing seat 6 to swing synchronously through the second connecting rod 12, so that the first roller 1 and the second roller 2 translate relative to the third roller 3, and the spacing between the third roller 3 and the second roller 2 is regulated; the pressure is monitored through the pressure sensor 14 on the third connecting rod 13.

[0047] The third bearing seat 8 and the second linear drive 17 are kept fixed, the first linear drive 10 is driven to act, and the output end thereof pushes one end of the first connecting rod 11 to move up and down through the first lifting connecting rod 9, and the first connecting rod 11 drives the first bearing seat 6 to swing around the fixed pin 18, so as to regulate the spacing between the first roller 1 and the second roller 2; the pressure is monitored through the pressure sensor 14 on the second connecting rod 12.

[0048] Based on the same inventive concept, the embodiment further proposes a three-roller machine, which includes the above-mentioned linkage regulating mechanism for roller spacing and pressure detection, and further includes a rotary drive mechanism 5 driving the first roller 1, the second roller 2 and the third roller 3 to rotate, and the rotation direction of the second roller 2 is opposite to that of the first roller 1 and the third roller 3.

[0049] As shown in Figures 1-2As shown, the rotary drive mechanism 5 comprises 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 keyed to the axially adjacent one end of the first roller 1 and the second roller 2, and are engaged with each other; the third gear 503 is keyed to the axially opposite end of the second roller 2, and the fourth gear 504 is keyed to the axially adjacent one end of the third roller 3 close to the third gear 503, and the two are engaged with each other. The output shaft of the rotary drive module 505 can be selectively drivingly connected with the rotating shaft of the first roller 1, the second roller 2 or the third roller 3; in the present embodiment, it is preferably drivingly connected with the rotating shaft of the third roller 3, which comprises a servo motor mounted on the bottom plate 401 of the support seat 4, a driving wheel keyed to the output end of the motor, and a driven wheel keyed to the axially one end of the third roller 3, and the driving wheel and the driven wheel are drivingly connected through a synchronous belt; chain wheel and chain transmission or gear direct engagement transmission can also be adopted to adapt to the transmission requirements under different working conditions. At this time, the three rollers are driven to rotate through the engagement of the fourth gear 504, the third gear 503, the second gear 502 and the first gear 501; if the output shaft is connected with the second roller 2, the first roller 1 and the third roller 3 can be directly driven by the two side gears respectively, and the transmission principle is consistent.

[0050] The output shaft of the rotary drive module 505 is drivingly connected with the rotating shaft of the third roller 3,

[0051] When the rotary drive module 505 works, it drives the third roller 3 to rotate; the fourth gear 504 is engaged with the third gear 503, driving the second roller 2 and the third roller 3 to rotate in opposite directions, the second gear 502 is engaged with the first gear 501, in turn driving the first roller 1 and the second roller 2 to rotate in opposite directions, and 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.

[0052] It should be particularly pointed out that the adjustment mechanism will not affect the normal work of the gear transmission system when adjusting the roller spacing, and the core protection is as follows:

[0053] Gear engagement and matching design: when the first gear 501, the second gear 502, the third gear 503 and the fourth gear 504 are selected, the center distance change corresponding to the maximum adjustment stroke of the roller is reserved, the engagement gap and the tolerance range can cover the slight center distance change in the adjustment process, and the continuous transmission is ensured.

[0054] Bearing seat swing trajectory matching: the swing trajectory of the first bearing seat 6, the second bearing seat 7 and the third bearing seat 8 around the fixed pin 18 is precisely calculated, the relative position of the rotation center and the gear engagement point is constant, the engagement angle change is controlled within the allowable error, and the transmission jamming is avoided.

[0055] In order to facilitate the feeding and discharging, the first roller 1 and the second roller 2 are provided with feeding baffles 19 at the axial ends thereof through supports, and the support seat 4 is provided with a discharging hopper 20 at one end thereof which is inclined downward.

[0056] Working principle:

[0057] Calibration stage: before starting, the readings of the pressure sensors 14 on the second connecting rods 12 (or the third connecting rods 13) at the same axial ends are adjusted to be consistent by adjusting the first linear drive 10 and the second linear drive 17, so as to ensure that the axial end-to-end distances of the first roller 1 and the second roller 2 and the second roller 2 and the third roller 3 are uniform, and the installation error is eliminated.

[0058] Processing stage: the material is guided by the feeding baffles 19 to the space between the first roller 1 and the second roller 2, the distance between the two rollers is adjusted to a set value by the first linear drive 10, and the pressure sensor 14 monitors the rolling pressure in real time; the three rollers are driven to rotate in reverse at a set speed ratio by the rotary drive mechanism 5, the material is further processed after being preliminarily rolled between the second roller 2 and the third roller 3, and finally discharged from the discharging hopper 20.

[0059] Working mode:

[0060] Separation mode: the first roller 1, the second roller 2 and the third roller 3 are all separated and kept at a certain distance, which is suitable for equipment maintenance, initial debugging and material switching.

[0061] Mixing mode: the third roller 3 and the second roller 2 are kept at a certain larger distance, the first roller 1 and the second roller 2 are in pressure mixing mode, keeping constant pressure, which is suitable for pre-mixing of multi-component materials to realize uniform dispersion of materials by pressure extrusion without fine grinding, typical applications include cosmetic paste homogenization and lithium battery slurry preliminary mixing; or gap mixing mode, the first roller 1 and the second roller 2 keep a constant gap, which is suitable for stirring and mixing of low-viscosity materials (such as paint color paste blending), and the shear force generated by the reverse rotation of the rollers is used to realize mixing, which avoids the splashing of materials caused by excessive pressure, typical applications include water-based ink color matching and adhesive base material mixing.

[0062] Grinding mode: the first roller 1 and the second roller 2 and the third roller 3 are all pressure mode, suitable for ultra-fine grinding of high-hardness materials (such as ceramic powder, metal powder), the particle size is reduced from microns to nanometers through two-stage pressure extrusion, typical applications include electronic paste grinding, ultra-fine processing of pharmaceutical intermediates; the first roller 1 and the second roller 2 are gap mode, and the second roller 2 and the third roller 3 are pressure mode, suitable for materials that are first screened and then ground (such as paint containing coarse particles), the gap between the first roller 1 and the second roller 2 is used for filtering large particle impurities, and the pressure between the second roller 2 and the third roller 3 is used for refining qualified particles, typical applications include impurity removal of ink and particle size reduction of concealer for cosmetics; the first roller 1 and the second roller 2, and the second roller 2 and the third roller 3 are all gap mode, suitable for precision machining with extremely high requirements on particle size distribution (such as optical film coating materials), the material thickness is controlled through fixed gap, and uniform shearing is achieved through high speed ratio, typical applications include grinding of photoresist for liquid crystal display and preparation of coating materials for aerospace.

[0063] Feedback regulation: if the pressure sensor 14 detects that the pressure deviates from the set value or the reading difference at both axial ends exceeds the threshold value, the control system immediately adjusts the roller spacing through the first linear drive 10 or the second linear drive 17, ensures uniform stress on the material, and maintains processing accuracy.

[0064] As shown in Figures 6-7 , the difference between this embodiment and embodiment 1 is the installation form of the rollers, at this time, the structure of the support seat 4 and the installation form of the first linear drive 10 and the second linear drive 17 need to be adjusted adaptively, as shown in Figure 6 , the second roller 2 is arranged above the first roller 1 on one side, and the third roller 3 is arranged above the second roller 2 away from the first roller 1 on one side; as shown in Figure 7 , the first roller 1 and the second roller 2 are at the same height, and the third roller 3 is arranged above the second roller 2 away from the first roller 1 on one side; Figures 6-7 , the installation form shown in the figure corresponds to the vertical arrangement of the first linear drive 10 and the second linear drive 17, and the height of the vertical plate 402 is adjusted correspondingly. As shown in Figure 8 , the first roller 1 is arranged directly above the third roller 3, and the second roller 2 is arranged on one side between the first roller 1 and the third roller 3, at this time, the support seat 4, the first linear drive 10 and the second linear drive 17 need to be turned over by 90 degrees as a whole, and the connection mode and driving principle of the remaining connecting rods are the same as those of embodiment 1, which will not be described here.

[0065] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures of the patent document.

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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