A flexible dusting device

Abstract

The application discloses a flexible dust sticking device, and relates to the field of cleaning devices, which comprises a rack comprising a first supporting column; a pneumatic cylinder mounted on the first supporting column and having a movable rod capable of moving in a vertical direction; a mounting plate fixedly connected to the movable rod; a fixed shaft fixedly mounted on the mounting plate; a first rotating sleeve and a second rotating sleeve vertically slidably sleeved on the fixed shaft, wherein the first rotating sleeve is located below the second rotating sleeve; a first spring and a second spring sleeved on the fixed shaft; a dust sticking roller with an end portion rotationally connected to the first rotating sleeve; and a cleaning roller with an end portion rotationally connected to the second rotating sleeve, wherein the outer circumferential surface of the cleaning roller is tangent to the outer circumferential surface of the dust sticking roller. When the dust sticking roller is pushed upward by a workpiece, the first rotating sleeve moves upward to compress the first spring, and the cleaning roller is always in close contact with the dust sticking roller under the action of the second spring. The flexible dust sticking device can realize flexible contact of the dust sticking roller to the workpiece and stable contact of the cleaning roller to the dust sticking roller in a simple and compact structure.

Description

Technical Field

[0001] This specification relates to the field of cleaning device technology, and in particular to a flexible dust-adhesive device. Background Technology

[0002] In the automated production of PCB boards, films, glass panels, and other products, surface cleaning is a crucial step in ensuring the quality of subsequent processes (such as mounting, dispensing, printing, and inspection). Adhesive rollers, as a commonly used non-contact cleaning tool, use their sticky surface to adsorb and transfer dust, particulate matter, and other contaminants from workpieces, offering advantages such as no damage to the workpiece surface and high cleaning efficiency.

[0003] To maintain the cleaning ability of the sticky roller, it is usually necessary to use a cleaning roller in conjunction with it to roll and remove contaminants adsorbed on the surface of the sticky roller in real time, thus achieving a self-cleaning function. However, in actual production, workpieces often have certain thickness tolerances or height fluctuations during transport (such as a few millimeters of up-and-down movement), resulting in unstable contact pressure between the sticky roller and the workpiece: excessive pressure may damage the workpiece or the roller body, while insufficient pressure will result in poor cleaning effect. At the same time, the up-and-down movement of the sticky roller due to changes in workpiece height will cause changes in its relative position with the cleaning roller, thereby affecting the contact stability between the two and preventing the cleaning roller from effectively removing contaminants from the surface of the sticky roller.

[0004] In existing technologies, multiple independent control structures are typically used to handle the contact pressure between the sticky roller and the workpiece, and between the cleaning roller and the sticky roller. However, this approach is complex, space-consuming, and lacks coordination between the control structures, making it difficult to ensure that the cleaning roller maintains stable contact by following the floating of the sticky roller. Therefore, how to achieve both flexible contact between the sticky roller and the workpiece, and stable, following contact between the cleaning roller and the sticky roller, with a simple and compact structure has become a pressing technical problem to be solved in this field. Summary of the Invention

[0005] In view of the shortcomings of the prior art, one object of this specification is to provide a flexible dust-adhesion device that can simultaneously achieve flexible contact between the dust-adhesion roller and the workpiece, as well as stable follow-up contact between the cleaning roller and the dust-adhesion roller, with a simple and compact structure.

[0006] To achieve the above objectives, this specification provides a flexible dust-adhesive device, comprising: The frame includes a first support column extending in a vertical direction; The cylinder mounted on the first support column has a movable rod that can move in the vertical direction; Mounting plate, fixedly connected to the movable rod; A fixed shaft is fixedly installed on the mounting plate and extends in the vertical direction; Both the first rotating sleeve and the second rotating sleeve can be vertically slidably sleeved on the fixed shaft, with the first rotating sleeve located below the second rotating sleeve; A first spring, sleeved on the fixed shaft, is used to apply a downward elastic force to the first rotating sleeve; The second spring is sleeved on the fixed shaft and is used to apply a downward elastic force to the second rotating sleeve; The dust-adhesive roller has its end rotatably connected to the first rotating sleeve and is used to contact the workpiece located below it. The cleaning roller has its end rotatably connected to the second rotating sleeve, and the outer peripheral surface of the cleaning roller is tangent to the outer peripheral surface of the dust sticking roller. When the dust sticking roller is pushed upward by the workpiece, the first rotating sleeve moves upward to compress the first spring, and the cleaning roller always sticks tightly to the dust sticking roller under the action of the second spring.

[0007] In a preferred embodiment, the frame further includes a second support column extending horizontally; the number of cylinders, mounting plates, fixed shafts, first springs, and second springs are all two; another cylinder is mounted on the second support column; the flexible dust-adhesive device further includes: Both the third rotating sleeve and the fourth rotating sleeve can be vertically slidably mounted on another fixed shaft, with the third rotating sleeve located below the fourth rotating sleeve; the other end of the dust-adhesive roller is rotatably connected to the third rotating sleeve; the other end of the cleaning roller is rotatably connected to the fourth rotating sleeve; the third rotating sleeve has a first rod extending in the horizontal direction, and the fourth rotating sleeve has a second rod extending in the horizontal direction. The third spring is sleeved on the first rod and abuts against the dust-sticking roller and the fixed shaft; when the dust-sticking roller moves toward the end closer to the third rotating sleeve and compresses the third spring, the dust-sticking roller separates from the first rotating sleeve. A fourth spring is sleeved on the second rod and abuts against the cleaning roller and the fixed shaft; when the cleaning roller moves toward the end closer to the fourth rotating sleeve and compresses the fourth spring, the cleaning roller separates from the second rotating sleeve.

[0008] In a preferred embodiment, the mounting plate is further fixedly mounted with a limiting block, the limiting block including a baffle, and a first axial space and a second axial space arranged from bottom to top, separated by the baffle; the fixed shaft passes through the baffle; the first rotating sleeve and the first spring are located in the first axial space, the first spring abutting between the first rotating sleeve and the baffle; the second rotating sleeve and the second spring are located in the second axial space, the second spring abutting between the second rotating sleeve and the top wall of the limiting block.

[0009] In a preferred embodiment, the fixing shaft and the limiting block are fixedly installed above the mounting plate connected to the first support column; the fixing shaft and the limiting block are fixedly installed below the mounting plate connected to the second support column; the first rotating sleeve and the third rotating sleeve are aligned in the horizontal direction, and the second rotating sleeve and the fourth rotating sleeve are aligned in the horizontal direction.

[0010] In a preferred embodiment, the two ends of the sticky roller are provided with a first bearing, the outer ring of the first bearing is engaged with the sticky roller, and the inner ring of the first bearing is engaged with the first rotating sleeve or the third rotating sleeve; a first retaining ring is provided on one side of the first bearing for fixing the first bearing inside the sticky roller.

[0011] In a preferred embodiment, the first rod is fixedly connected to a first top base and a first blocking nut at one end near the first rotating sleeve. The first blocking nut is used to block and lock the first top base. The third spring is located between the first top base and the fixed shaft.

[0012] In a preferred embodiment, both the second rotating sleeve and the fourth rotating sleeve are rotatably connected to a rotating shaft. A second bearing is installed inside the rotating shaft. The outer ring of the second bearing mates with the rotating shaft, and the inner ring of the second bearing mates with either the second rotating sleeve or the fourth rotating sleeve. A second retaining ring and a third retaining ring are provided on both sides of the second bearing to fix the second bearing inside the rotating shaft.

[0013] In a preferred embodiment, the second rod is fixedly connected to a second top base and a second blocking nut at one end near the second rotating sleeve. The second blocking nut is used to block and lock the second top base. The fourth spring is located between the second top base and the fixed shaft.

[0014] In a preferred embodiment, the cylinder is fixedly connected to a tension spring, one end of which is connected to the fixed end of the cylinder, and the other end is connected to the mounting plate.

[0015] In a preferred embodiment, there are two first support columns, and the frame further includes a second support column extending in a horizontal direction, with both ends of the second support column connected to the tops of the two first support columns respectively; the number of cylinders, mounting plates, fixed shafts, first springs and second springs are all four, and the number of dust-adhesive rollers and cleaning rollers are both two; wherein two of the cylinders are installed in the middle position of the second support column.

[0016] Beneficial effects:

[0017] The flexible dust-adhesive device provided in this embodiment uses a first rotating sleeve and a second rotating sleeve that can slide vertically on the same fixed shaft. The first spring and the second spring apply downward elastic force to the two rotating sleeves respectively. This allows the dust-adhesive roller to maintain flexible contact by adapting to changes in the height of the workpiece through the compression of the first spring. When the dust-adhesive roller floats upward, the second spring drives the cleaning roller to automatically follow and always keep close to the dust-adhesive roller. Thus, with a simple and compact structure, flexible and stable contact between the two contact interfaces of "dust-adhesive roller-workpiece" and "cleaning roller-dust-adhesive roller" is achieved simultaneously. This avoids cleaning failure or workpiece damage caused by fluctuations in workpiece height, and significantly improves the stability of the cleaning effect and the reliability of the device.

[0018] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope as a result.

[0019] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0020] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of a flexible dust-adhesive device provided in this embodiment; Figure 2 This is a schematic diagram of the structure of one end of a dust-adhesive roller and a cleaning roller provided in this embodiment; Figure 3 This is a schematic diagram of the structure of the other end of a dust-adhesive roller and a cleaning roller provided in this embodiment; Figure 4 This is a front view of a flexible dust-adhesive device provided in this embodiment; Figure 5 for Figure 4 The left view; Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure of the AA surface in the middle; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 for Figure 6 A magnified structural diagram at point C.

[0023] Explanation of reference numerals in the attached figures: 1. Frame; 11. First support column; 12. Second support column; 2. Cylinder; 21. Movable rod; 22. Tension spring; 23. Fixed base; 24. Intake throttle valve; 25. Inductive switch; 3. Mounting plate; 31. Limiting block; 32. Baffle; 33. First axial space; 34. Second axial space; 4. Fixed shaft; 51. First rotating sleeve; 52. Second rotating sleeve; 53. Third rotating sleeve; 531. First rod; 532. First top base; 533. First blocking nut; 54. Fourth rotating sleeve; 541. Second rod; 542. Second top base; 543. Second blocking nut; 55. Rotating shaft; 551. Second bearing; 552. Second retaining ring; 553. Third retaining ring; 61. First spring; 62. Second spring; 63. Third spring; 64. Fourth spring; 7. Adhesive roller; 71. First bearing; 72. First retaining ring; 8. Cleaning roller; 9. Workpiece; 91. Worktable; X, first direction; Y, second direction; Z, vertical direction. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0025] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may be interposed with another element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figures 1 to 8 This application provides a flexible dust-adhesive device, comprising: a frame 1, a cylinder 2, a mounting plate 3, a fixed shaft 4, a first rotating sleeve 51, a second rotating sleeve 52, a first spring 61, a second spring 62, a dust-adhesive roller 7, and a cleaning roller 8.

[0028] The frame 1 includes a first support column 11 extending vertically in the Z direction. The cylinder 2 is mounted on the first support column 11. Figure 4 and Figure 5 As shown, cylinder 2 has a movable rod 21 that can move vertically in the Z direction. Mounting plate 3 is fixedly connected to movable rod 21. Fixed shaft 4 is fixedly mounted on mounting plate 3 and extends vertically in the Z direction. First rotating sleeve 51 and second rotating sleeve 52 are both vertically slidably sleeved on fixed shaft 4, with first rotating sleeve 51 located below second rotating sleeve 52. First spring 61 is sleeved on fixed shaft 4 and is used to apply a downward elastic force to first rotating sleeve 51. Second spring 62 is sleeved on fixed shaft 4 and is used to apply a downward elastic force to second rotating sleeve 52. The end of sticky roller 7 is rotatably connected to first rotating sleeve 51 and is used to contact workpiece 9 located below it. The end of cleaning roller 8 is rotatably connected to second rotating sleeve 52, and the outer peripheral surface of cleaning roller 8 is tangent to the outer peripheral surface of sticky roller 7. When sticky roller 7 is pushed upward by workpiece 9, first rotating sleeve 51 moves upward to compress first spring 61, and cleaning roller 8 remains in close contact with sticky roller 7 under the action of second spring 62.

[0029] The flexible dust-adhesive device provided in this embodiment, by sleeved with a first rotating sleeve 51 and a second rotating sleeve 52 that can slide vertically on the same fixed shaft 4, and by applying a downward elastic force to the two rotating sleeves by the first spring 61 and the second spring 62 respectively, allows the dust-adhesive roller 7 to maintain flexible contact by adapting to the height changes of the workpiece 9 through the compression of the first spring 61, and also allows the cleaning roller 8 to automatically follow and always stick to the dust-adhesive roller 7 when the dust-adhesive roller 7 floats upward, driven by the second spring 62. Thus, with a simple and compact structure, flexible and stable contact between the two contact interfaces of "dust-adhesive roller 7-workpiece 9" and "cleaning roller 8-dust-adhesive roller 7" is achieved simultaneously, avoiding cleaning failure or damage to the workpiece 9 caused by the height fluctuation of the workpiece 9, and significantly improving the stability of the cleaning effect and the reliability of the device.

[0030] In this embodiment, the frame 1 further includes a second support column 12 extending horizontally. There are two cylinders 2, two mounting plates 3, two fixed shafts 4, two first springs 61, and two second springs 62; the other cylinder 2 is mounted on the second support column 12. The second support column 12, the dust-adhesive roller 7, and the cleaning roller 8 all extend along the second direction Y. The workpiece 9 is placed on a worktable 91, which can move the workpiece 9 along the second direction Y. The first direction X and the second direction Y are perpendicular to each other and both perpendicular to the vertical direction Z.

[0031] like Figure 3 As shown, the flexible adhesive device also includes a third rotating sleeve 53, a fourth rotating sleeve 54, a third spring 63, and a fourth spring 64. Both the third rotating sleeve 53 and the fourth rotating sleeve 54 are vertically slidably mounted on another fixed shaft 4, with the third rotating sleeve 53 located below the fourth rotating sleeve 54. The other end of the adhesive roller 7 is rotatably connected to the third rotating sleeve 53. The other end of the cleaning roller 8 is rotatably connected to the fourth rotating sleeve 54. The third rotating sleeve 53 has a first rod portion 531 extending horizontally, and the fourth rotating sleeve 54 has a second rod portion 541 extending horizontally. The third spring 63 is mounted on the first rod portion 531 and abuts against the adhesive roller 7 and the fixed shaft 4. When the adhesive roller 7 moves towards the end closer to the third rotating sleeve 53 and compresses the third spring 63, the adhesive roller 7 separates from the first rotating sleeve 51. The fourth spring 64 is mounted on the second rod portion 541 and abuts against the cleaning roller 8 and the fixed shaft 4. When the cleaning roller 8 moves toward the end closer to the fourth rotating sleeve 54 and compresses the fourth spring 64, the cleaning roller 8 separates from the second rotating sleeve 52.

[0032] By setting a second support column 12 and installing another set of cylinders 2, fixed shaft 4, and rotating sleeve, synchronous support and drive are achieved at both ends of the sticky roller 7 and cleaning roller 8. Compared with the single-sided drive scheme, the dual-sided drive can ensure that the roller body maintains a horizontal posture during lifting and rotation, avoiding roller body tilting caused by unilateral force. More importantly, the third rotating sleeve 53 is provided with a first rod 531 and a third spring 63, and the fourth rotating sleeve 54 is provided with a second rod 541 and a fourth spring 64, so that the sticky roller 7 and cleaning roller 8 also have elastic floating capability in the axial direction. When the axial dimension of the roller body changes due to thermal expansion and contraction or installation tolerance, the roller end can compress the corresponding spring and move axially, so that the roller body and the rotating sleeve maintain a flexible connection without hard compression. At the same time, when the roller body needs to be replaced, it is only necessary to overcome the spring force and push the roller body to one side to separate it from the rotating sleeve on the other side, without disassembling the entire support structure, which greatly facilitates the quick replacement and maintenance of the roller body.

[0033] In this embodiment, the mounting plate 3 is also fixedly mounted with a limiting block 31. The limiting block 31 includes a baffle 32, and a first axial space 33 and a second axial space 34 arranged from bottom to top, separated by the baffle 32. The fixed shaft 4 passes through the baffle 32. The first rotating sleeve 51 and the first spring 61 are located in the first axial space 33, with the first spring 61 abutting between the first rotating sleeve 51 and the baffle 32. The second rotating sleeve 52 and the second spring 62 are located in the second axial space 34, with the second spring 62 abutting between the second rotating sleeve 52 and the top wall of the limiting block 31. This structure allows the two springs and the two rotating sleeves to be precisely limited axially, ensuring that the pre-compression of the springs and the direction of force application are stable and controllable, and preventing the rotating sleeves from excessive displacement or dislodging during the up-and-down floating process. The baffle 32 separates the moving space of the first rotating sleeve 51 and the second rotating sleeve 52. At the same time, the baffle 32 provides the reaction force fulcrum of the first spring 61, and the top wall of the limiting block 31 provides the reaction force fulcrum of the second spring 62, which simplifies the structural design and improves the operational stability of the device.

[0034] like Figure 2 and Figure 3 As shown, a fixed shaft 4 and a limiting block 31 are fixedly installed above the mounting plate 3 connected to the first support column 11, and a fixed shaft 4 and a limiting block 31 are fixedly installed below the mounting plate 3 connected to the second support column 12. This symmetrical layout design fully utilizes the spatial characteristics of the double-sided support, allowing the two ends of the dust-adhesive roller 7 and the cleaning roller 8 to be naturally aligned in the horizontal direction, making reasonable use of the space of the frame 1. Figure 4 As shown, the first rotating sleeve 51 and the third rotating sleeve 53 are aligned in the horizontal direction, and the second rotating sleeve 52 and the fourth rotating sleeve 54 are aligned in the horizontal direction, thereby ensuring that the roller body has a straight axis and rotates smoothly after installation, avoiding the problem of roller body twisting or jamming caused by inconsistent installation height at both ends.

[0035] like Figure 6 , Figure 7 and Figure 8 As shown, the dust-adhesive roller 7 has a first bearing 71 inside both ends. The outer ring of the first bearing 71 cooperates with the dust-adhesive roller 7, and the inner ring of the first bearing 71 cooperates with the first rotating sleeve 51 or the third rotating sleeve 53. This achieves low-friction rotation of the dust-adhesive roller 7 relative to the first rotating sleeve 51 and the third rotating sleeve 53, ensuring smooth rotation of the dust-adhesive roller 7 during operation and avoiding roller stoppage or scratches on the surface of the workpiece 9 due to excessive frictional resistance. A first retaining ring 72 is provided on one side of the first bearing 71, which can firmly fix the first bearing 71 inside the dust-adhesive roller 7, preventing the first bearing 71 from axially moving or falling out during operation, thus improving connection reliability and service life.

[0036] like Figure 8 As shown, the first rod portion 531 has a first top base 532 and a first blocking nut 533 fixedly connected to one end near the first rotating sleeve 51. The first blocking nut 533 is used to block and lock the first top base 532. The third spring 63 is located between the first top base 532 and the fixed shaft 4. When the sticky roller 7 slides along the first rod portion 531 due to changes in axial dimensions or the need for disassembly, the first top base 532 moves with the sticky roller 7 and compresses the third spring 63. The first blocking nut 533 is used to limit the first top base 532, preventing it from coming off the end of the first rod portion 531. This structure not only achieves axial floating guidance and limiting, but also allows the pre-compression of the third spring 63 to be adjusted according to actual needs through the adjustable position of the blocking nut, adapting to the installation requirements of rollers of different specifications.

[0037] like Figure 7 and Figure 8 As shown, both the second rotating sleeve 52 and the fourth rotating sleeve 54 are rotatably connected to a rotating shaft 55. A second bearing 551 is installed inside the rotating shaft 55. The outer ring of the second bearing 551 mates with the rotating shaft 55, and the inner ring of the second bearing 551 mates with either the second rotating sleeve 52 or the fourth rotating sleeve 54. Second retaining rings 552 and third retaining rings 553 are provided on both sides of the second bearing 551 to fix it within the rotating shaft 55. This multi-layered structure makes the rotation of the cleaning roller 8 more stable. Simultaneously, the second retaining rings 552 and third retaining rings 553 provide bidirectional fixation of the second bearing 551 from both sides, effectively preventing axial displacement of the second bearing 551 during high-speed rotation and improving the reliability and stability of the cleaning roller 8 under long-term continuous operation.

[0038] like Figure 8As shown, the second rod portion 541 has a second top base 542 and a second blocking nut 543 fixedly connected to one end near the second rotating sleeve 52. The second blocking nut 543 is used to block and lock the second top base 542. The fourth spring 64 is located between the second top base 542 and the fixed shaft 4. This design enables the cleaning roller 8 to have elastic floating capability in the axial direction. When the cleaning roller 8 needs to be adjusted axially due to thermal expansion and contraction or installation tolerance, it can slide along the second rod portion 541 and compress the fourth spring 64 to avoid hard interference. When it is necessary to disassemble the cleaning roller 8, it is only necessary to overcome the spring force and push the cleaning roller 8 to one side to separate it from the second rotating sleeve 52 on the opposite side, without disassembling other parts, further simplifying the maintenance operation.

[0039] In this embodiment, such as Figure 2 As shown, a tension spring 22 is fixedly connected to the cylinder 2. One end of the tension spring 22 is connected to the fixed end of the cylinder 2, and the other end is connected to the mounting plate 3. When the cylinder 2 drives the mounting plate 3 and the roller assembly on it to descend to the working position, the tension spring 22 is stretched and stores elastic potential energy. When the cylinder 2 needs to lift the roller assembly, the contraction force of the tension spring 22 can help the cylinder 2 overcome the gravity of the assembly, reduce the driving force required for the upward stroke of the cylinder 2, thereby reducing the load and energy consumption of the cylinder 2. At the same time, the presence of the tension spring 22 can also play a certain safety protection role in the event of accidental pressure loss of the cylinder 2, preventing the roller assembly from being damaged by sudden drop due to gravity.

[0040] In addition, cylinder 2 is connected to an inlet throttle valve 24, which is used to adjust the inlet and outlet flow of cylinder 2 to control the speed at which the sticky roller 7 descends to contact the workpiece 9. By adjusting the gas flow, the smooth operation of cylinder 2 is ensured, and the spring enables flexible contact, preventing damage to the PCB board from hard impacts. Cylinder 2 is also equipped with a sensor switch 25, which is used to detect the position of the moving rod 21 of cylinder 2 to confirm whether the sticky roller 7 has contacted or detached from the workpiece 9. By detecting the piston position, it is confirmed whether the roller is in a safe working or standby position, realizing automatic logic control. The inlet throttle valve 24 is a mechanical protection layer, and the sensor switch 25 is an electrical control layer. By introducing the inlet throttle valve 24 and the sensor switch 25, the device can be upgraded from a simple structural floating system to a precision system of "pneumatic flexible control + electrical closed-loop feedback", which greatly improves the controllability and safety of the device.

[0041] like Figure 1As shown, in a preferred embodiment, there are two first support columns 11, and the two ends of a second support column 12 are respectively connected to the tops of the two first support columns 11. There are four cylinders 2, four mounting plates 3, four fixed shafts 4, four first springs 61, and four second springs 62; and two sticky rollers 7 and two cleaning rollers 8. Two cylinders 2 are installed in the middle of the second support columns 12, forming a stable gantry frame 1 structure. The two sticky rollers 7 and the two cleaning rollers 8 can work independently or collaboratively, thereby achieving comprehensive cleaning of the two workpieces 9. This multi-roller configuration significantly improves cleaning efficiency and processing area per unit time, and is particularly suitable for continuous production lines of large-size PCB boards or wide-width film materials.

[0042] To meet the demands of rapid industrial development and market supply and demand, and to save costs and improve efficiency, the demand for higher-precision exposure equipment is increasing daily. The flexible dust-adhesion device provided in this application is particularly suitable for exposure machines with higher precision requirements, solving the problems of low efficiency and inconsistent results caused by manual dust adhesion. Through structural design, this device makes greater use of spring characteristics, achieving flexible pressure plates, automatic height adjustment, and anti-collision safety protection functions with only one set of cylinders 2 (one cylinder 2 connected to each end along the first direction X). This device has stable performance, precise pressing position, high speed, and moderate, adjustable, and stable dust-adhesion pressure, effectively replacing manual operation, significantly improving production capacity and yield, thereby increasing factory efficiency.

[0043] Specifically, through the coordinated movement of cylinder 2, limit block 31, fixed shaft 4, rotating sleeve, spring, bearing, etc., the functions of pressing down, rebounding, self-cleaning, and self-protecting lifting of the dust-adhesive roller 7 are realized, thereby replacing manual dust application and meeting customer needs. The cylinders 2 at both ends can be fixedly installed on the frame 1 through the fixed seat 23. Other parts (such as cylinder 2, limit block 31, fixed shaft 4, rotating sleeve, bearing, spring, tension spring 22, etc.) are installed in sequence. During installation, attention should be paid to ensuring smooth movement of sliding parts without jamming, and that the bearing positions are not loose.

[0044] The flexible adhesive device provided in this application has the following states: 1. Dust-adhesive working state: When the worktable 91 moves along the second direction Y until the edge of the workpiece 9 is below the dust-adhesive roller 7, the cylinder 2 extends (so that the lowest point of the dust-adhesive roller 7 just contacts the upper surface of the worktable 91, thus ensuring that the dust-adhesive roller 7 is always in close contact with the workpiece 9 under the action of the first spring 61, no matter the position of the worktable 91). The dust-adhesive roller 7 contacts the workpiece 9, and the worktable 91 continues to move along the second direction Y. The dust-adhesive roller 7 and the cleaning roller 8 roll under the action of bearings and friction. While the dust-adhesive roller 7 is sticking to remove the micro-dust from the workpiece 9, the cleaning roller 8 simultaneously sticks to remove the dirt from the dust-adhesive roller 7. Because the cleaning roller 8 has higher viscosity, the dirt will remain on the cleaning roller 8. After a certain quantity is produced, a sheet of the cleaning roller 8 is torn off. This cycle continues until the cleaning roller 8 is used up and replaced.

[0045] 2. Material installation and replacement status: When replacing the dust roller 7 or the cleaning roller 8, the method of pushing first and then lifting is adopted. That is, first push the dust roller 7 or the cleaning roller 8 inward along the first direction X (the side closer to the third rotating sleeve 53 or the fourth rotating sleeve 54) to disengage it from the locking position of the first rotating sleeve 51 or the second rotating sleeve 52 and then lift it up. Then pull it out at an angle. The action is reversed when installing.

[0046] 3. Safety Protection Status: Although this device uses a solenoid valve as the central control pressure-holding valve, and cylinder 2 is normally in the retracted state with no risk of collision, to ensure greater safety and avoid extreme situations such as when the device is not activated, the magnetic switch is malfunctioning, the air supply is interrupted, the solenoid valve is damaged, or during the installation and commissioning phase, cylinder 2 may extend under the weight of the device. In such cases, when the worktable 91 is performing exposure work, a collision may occur, causing damage to the device. Therefore, a tension spring 22 is added. The two ends of the tension spring 22 are fixed to the cylinder body of cylinder 2 and the mounting plate 3, respectively. In the case of an air supply interruption, the tension of the tension spring 22 can keep cylinder 2 in the retracted state, thereby avoiding collision. During normal operation, due to the limited tension, it will not affect the opening of cylinder 2.

[0047] It should be noted that in the description of this specification, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this specification, unless otherwise stated, "a plurality of" means two or more.

[0048] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0049] Unless otherwise stated, all ranges include the endpoints and all numbers between them. The terms "approximately" or "about" used with ranges apply to both endpoints of the range. Thus, "approximately 20 to 30" is intended to cover "approximately 20 to approximately 30," including at least the specified endpoints.

[0050] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

[0051] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0052] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the inventors have not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A flexible dust-adhesive device, characterized in that, include: The frame includes a first support column extending in a vertical direction; The cylinder mounted on the first support column has a movable rod that can move in the vertical direction; Mounting plate, fixedly connected to the movable rod; A fixed shaft is fixedly installed on the mounting plate and extends in the vertical direction; Both the first rotating sleeve and the second rotating sleeve can be vertically slidably sleeved on the fixed shaft, with the first rotating sleeve located below the second rotating sleeve; A first spring, sleeved on the fixed shaft, is used to apply a downward elastic force to the first rotating sleeve; The second spring is sleeved on the fixed shaft and is used to apply a downward elastic force to the second rotating sleeve; The dust-adhesive roller has its end rotatably connected to the first rotating sleeve and is used to contact the workpiece located below it. The cleaning roller has its end rotatably connected to the second rotating sleeve, and the outer peripheral surface of the cleaning roller is tangent to the outer peripheral surface of the dust-sticking roller. When the dust-sticking roller is pushed upward by the workpiece, the first rotating sleeve moves upward to compress the first spring, and the cleaning roller always sticks tightly to the dust-sticking roller under the action of the second spring. The frame further includes a second support column extending horizontally; the number of cylinders, mounting plates, fixed shafts, first springs, and second springs are all two; another cylinder is mounted on the second support column; the flexible dust-adhesive device further includes: Both the third rotating sleeve and the fourth rotating sleeve can be vertically slidably mounted on another fixed shaft, with the third rotating sleeve located below the fourth rotating sleeve; the other end of the dust-adhesive roller is rotatably connected to the third rotating sleeve; the other end of the cleaning roller is rotatably connected to the fourth rotating sleeve; the third rotating sleeve has a first rod extending in the horizontal direction, and the fourth rotating sleeve has a second rod extending in the horizontal direction. The third spring is sleeved on the first rod and abuts against the dust-sticking roller and the fixed shaft; when the dust-sticking roller moves toward the end closer to the third rotating sleeve and compresses the third spring, the dust-sticking roller separates from the first rotating sleeve. The fourth spring is sleeved on the second rod and abuts against the cleaning roller and the fixed shaft; when the cleaning roller moves toward the end closer to the fourth rotating sleeve and compresses the fourth spring, the cleaning roller separates from the second rotating sleeve. The mounting plate is also fixedly mounted with a limiting block, the limiting block including a baffle, and a first axial space and a second axial space arranged from bottom to top, separated by the baffle; the fixed shaft passes through the baffle; the first rotating sleeve and the first spring are located in the first axial space, the first spring abutting between the first rotating sleeve and the baffle; the second rotating sleeve and the second spring are located in the second axial space, the second spring abutting between the second rotating sleeve and the top wall of the limiting block; The fixed shaft and the limiting block are fixedly installed above the mounting plate connected to the first support column; the fixed shaft and the limiting block are fixedly installed below the mounting plate connected to the second support column; the first rotating sleeve and the third rotating sleeve are aligned in the horizontal direction, and the second rotating sleeve and the fourth rotating sleeve are aligned in the horizontal direction. The dust-sticking roller has a first bearing inside both ends. The outer ring of the first bearing is engaged with the dust-sticking roller, and the inner ring of the first bearing is engaged with the first rotating sleeve or the third rotating sleeve. A first retaining ring is provided on one side of the first bearing to fix the first bearing inside the dust-sticking roller. The first rod has a first top base and a first blocking nut fixedly connected at one end near the first rotating sleeve. The first blocking nut is used to block and lock the first top base. The third spring is located between the first top base and the fixed shaft. Both the second and fourth rotating sleeves are rotatably connected to a rotating shaft. A second bearing is installed inside the rotating shaft. The outer ring of the second bearing mates with the rotating shaft, and the inner ring of the second bearing mates with either the second or fourth rotating sleeve. A second retaining ring and a third retaining ring are provided on both sides of the second bearing to fix the second bearing inside the rotating shaft. A second top base and a second blocking nut are fixedly connected to one end of the second rod near the second rotating sleeve. The second blocking nut is used to block and lock the second top base. The fourth spring is located between the second top base and the fixed shaft.

2. The flexible dust-adhesive device according to claim 1, characterized in that, The cylinder is fixedly connected to a tension spring, one end of which is connected to the fixed end of the cylinder, and the other end is connected to the mounting plate.

3. The flexible dust-adhesive device according to claim 1, characterized in that, There are two first support columns, and the frame also includes a second support column extending horizontally, with the two ends of the second support column connected to the tops of the two first support columns respectively; the number of cylinders, mounting plates, fixed shafts, first springs and second springs are all four, and the number of dust-adhesive rollers and cleaning rollers are all two; wherein two of the cylinders are installed in the middle position of the second support column.

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