Gap adjusting mechanism, roller device and dry coating machine

Abstract

The utility model discloses a clearance adjusting mechanism, roll device and dry method coater, wherein the clearance adjusting mechanism is used for adjusting the clearance between two parts, and includes follower, seat body and drive piece, follower includes the butt joint portion and driven plunger portion that are connected mutually, butt joint portion is used for butt joint the movable part of two parts, and the driven plunger portion is used for butt joint the movable part of two parts. A gap is defined between the two components. The seat body comprises a driven plunger cavity, and the driven plunger cavity is used for containing the driven plunger part. The driving part comprises a driving plunger part and a driving plunger cavity for accommodating the driving plunger part, a transmission channel is communicated between the driving plunger cavity and the driven plunger cavity, and the transmission channel is used for accommodating a transmission medium. The driving plunger part slides along the driving plunger cavity to drive the transmission medium of the transmission channel to flow, the transmission medium drives the driven plunger part to slide along the driven plunger cavity, and the driven plunger part drives the abutting part to move. The driving plunger part is provided with a driving end face, the driven plunger part is provided with a driven end face, and the area of the driving end face is smaller than that of the driven end face.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of roll structure, in particular to a gap adjusting mechanism, roller device and dry coating machine. BACKGROUND

[0002] On the dry coating machine, the roller device will be arranged, and the roller device will include two compression rollers. In use, the gap between the two compression rollers can be less than the thickness of the material belt, so that when the material belt passes between the two compression rollers, the two compression rollers can squeeze the material belt to achieve the corresponding design purpose. For example, the thickness of the material belt is reduced or the material is uniformly distributed on the material belt to complete the compounding, and for example, several single-layer material belts are compounded into a material belt with a multi-layer structure.

[0003] In related technologies, in order to ensure the roll pressing quality, a gap adjusting mechanism is arranged, which can adjust the gap between the two compression rollers. In structure, the gap adjusting mechanism can include a driving block and a passive block, and a wedge type cooperation is arranged between the driving block and the passive block. In use, the movable roller of the two compression rollers is first moved away from the fixed roller, and then the gap is adjusted. For gap adjustment, the driving block is moved in one direction, and then the passive block is moved in another direction through the wedge type cooperation. The moving direction of the driving block is perpendicular to the moving direction of the passive block, and the gap adjustment is completed. Finally, the movable roller is moved close to the fixed roller, and due to the blocking of the passive block, the gap between the two compression rollers meets the requirements, and the roll pressing operation or the rolling operation can be performed.

[0004] However, the existing gap adjusting mechanism can only be adjusted in the stopped state, and cannot be adjusted when the equipment is working, that is, the pressure adjustment cannot be performed, and it is difficult to meet the needs of automatic production. UTILITY MODEL CONTENTS

[0005] The utility model aims at least to solve one of the technical problems existing in the prior art. Therefore, the utility model provides a gap adjusting mechanism which can perform pressure adjustment without stopping, and can meet the needs of automatic production.

[0006] The utility model also provides a roller device with the above gap adjusting mechanism.

[0007] The utility model also provides a dry coating machine with the above gap adjusting mechanism or roller device.

[0008] The gap adjusting mechanism according to the first aspect of the present application is used for adjusting the gap between two components, and comprises a driven part, a seat body and a driving part, wherein the driven part comprises an abutting part and a driven plunger part connected with each other, the abutting part is used for abutting with a movable component of the two components to define the gap between the two components, and the seat body comprises a driven plunger cavity used for accommodating the driven plunger part.

[0009] The gap adjusting mechanism according to the first aspect of the present application has at least the following beneficial effects: the gap adjusting mechanism provided by the present application allows the adjustment of the gap between the compression rollers during the operation of the dry coating machine, without the need of stopping the machine, thereby greatly improving the production efficiency and flexibility. Through the differential design of the area of the driving end face and the driven end face, the amplification effect of force is realized, so that even a small driving input can cause significant gap changes, thereby meeting the demand of high-precision adjustment. Moreover, the gap adjusting mechanism has a compact structure, fewer components, and is easy to install and maintain. The use of the transmission medium also reduces mechanical wear and prolongs the service life.

[0010] According to some embodiments of the first aspect of the present application, the sliding direction of the driving plunger part and the sliding direction of the driven plunger part are arranged at an angle; or, the sliding direction of the driving plunger part and the sliding direction of the driven plunger part are perpendicular.

[0011] According to some embodiments of the first aspect of the present application, the driving part comprises a ball screw assembly driving the driving plunger part to slide, and a motor connected with the ball screw assembly.

[0012] According to some embodiments of the first aspect of the present application, the driving plunger part has a driving hole with an internal thread matched with the screw rod.

[0013] According to some embodiments of the first aspect of the present application, the driving plunger cavity and the transmission channel are located in the seat body.

[0014] According to some embodiments of the first aspect of the present application, the abutting part is capable of adjusting the position relative to the driven plunger part, and the direction of the position adjustment of the abutting part relative to the driven plunger part is arranged along the sliding direction of the driven plunger part.

[0015] According to some embodiments of the first aspect of the present application, the abutting portion is position-adjustable relative to the driven plunger portion, comprising that a leveling screw is arranged between the abutting portion and the driven plunger portion, and a leveling screw thread connected to the leveling screw.

[0016] According to some embodiments of the first aspect of the present application, the number of the driven members is several, and the seat body is correspondingly provided with several driven plunger cavities; and / or, the driven member has several driven plunger portions, and the seat body is correspondingly provided with several driven plunger cavities.

[0017] According to the roll device of the second aspect of the present application, comprising the gap adjusting mechanism of any one of the above, further comprising a fixed roll and a movable roll, the movable roll is closeable to and distanceable from the fixed roll, and the abutting portion is capable of abutting both ends of the movable roll to prevent the movable roll from approaching the fixed roll.

[0018] According to some embodiments of the second aspect of the present application, the number of the driven members is two, the two driven members are arranged along the axial direction of the movable roll, and the heights of the two driven members are capable of being set differently to make the movable roll parallel to the fixed roll.

[0019] According to the dry coating machine of the third aspect of the present application, comprising the gap adjusting mechanism of any one of the above, or comprising the roll device as described above.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0022] Figure 1 It is a cross-sectional structure schematic view of the gap adjusting mechanism of the first aspect of the present application.

[0023] Figure 2 It is a cross-sectional structure schematic view of the gap adjusting mechanism of the first aspect of the present application. Figure 1 It is a structure schematic view of the gap adjusting mechanism.

[0024] Figure 3A cross section structure schematic view of the driven member of the gap adjusting mechanism of the first aspect embodiment of the utility model.

[0025] Figure 4 A position relation schematic view of the gap adjusting mechanism, the movable roller and the fixed roller of the second aspect embodiment of the utility model.

[0026] Figure 5 A schematic view of the gap adjusting mechanism of the second aspect embodiment of the utility model for leveling operation.

[0027] The drawing label: gap adjusting mechanism 1000;Driven member 100;Butt joint part 110;Driven plunger part 120;Seat body 200;Driven plunger cavity 210;Driving piece 300;Driving plunger part 310;Driving hole 311;Driving plunger cavity 320;Transmission channel 321;Ball screw assembly 330;Motor 340;Movable roller 2000;Fixed roller 3000. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar labels represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0029] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relation indicated by up, down, front, back, left, right etc. is based on the orientation or position relation shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, cannot be understood as the limitation of the utility model.

[0030] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than etc. is understood as not including the number, above, below, within etc. is understood as including the number. If the first and the second are described, this is only used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0031] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, the term "installation, connection and connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.

[0032] The gap adjusting mechanism, the roll device and the dry coating machine according to the embodiments of the utility model are described below with reference to the drawings.

[0033] Referring to Figure 1 And Figure 2 The utility model aims at providing a kind of gap adjusting mechanism 1000, roll device and dry coating machine embodiment, gap adjusting mechanism 1000, roll device and dry coating machine can be part of gap adjusting mechanism 1000, roll device and dry coating machine, thus, the utility model also aims at providing a kind of gap adjusting mechanism 1000, roll device and dry coating machine embodiment, gap adjusting mechanism 1000, roll device and dry coating machine include gap adjusting mechanism 1000, roll device and dry coating machine.

[0034] Referring to Figure 1 The utility model aims at providing gap adjusting mechanism 1000, for adjusting the gap between two components, the component can be two adjacent pressure rollers in dry coating machine.Specifically, gap adjusting mechanism 1000 includes driven piece 100, seat body 200 and driving piece 300.

[0035] Wherein, driven piece 100 is integrally or detachably connected by abutting portion 110 and driven plunger portion 120.Abutting portion 110 is directly contacted with the movable component in the two components of the gap to be adjusted, which can be movable pressure roller.The gap between two components is accurately controlled by adjusting its position.Optionally, driven plunger portion 120 is designed as cylindrical or other suitable shape to adapt to driven plunger cavity 210 in seat body 200.The shape of driven piece 100, especially abutting portion 110, can be customized according to the shape of the component to be adjusted and the need, to ensure the best contact and gap control.

[0036] It needs to be explained that, in some embodiments, driven plunger portion 120 is made of high-strength, wear-resistant material, such as alloy steel or stainless steel, to ensure its stability and durability for long-term use.And abutting portion 110 and driven plunger portion 120 are made by integrated forming process, such as casting, forging or precision machining, to ensure seamless connection and accurate matching between the two.

[0037] Further, the seat body 200 is provided with a driven plunger cavity 210 for tightly and slidably accommodating the driven plunger part 120. The seat body 200 also needs to have sufficient strength and rigidity to support the driver 100 and transmit the necessary force and movement. In addition, the seat body 200 also needs to be designed with a transmission channel 321 communicating with the driving plunger cavity 320, and the transmission channel 321 should ensure that the transmission medium can flow smoothly. The transmission medium is preferably hydraulic oil, but is not the only limitation. In addition to hydraulic oil, other types of transmission media such as air pressure, electromagnetic force, etc. can also be used to adapt to different working environments and needs.

[0038] In addition, the driver 300 includes a driving plunger part 310 and a driving plunger cavity 320. The driving plunger part 310 is axially slidable along the driving plunger cavity 320, one end, that is, the driving end is connected to the external control device, and the other end, that is, the end away from the control device forms a driving end face. The driving plunger cavity 320 is connected to the driven plunger cavity 210 through the transmission channel 321, and the transmission channel 321 is filled with transmission medium. When the driving plunger part 310 moves, it will squeeze or pull the transmission medium, thereby pushing or driving the driven plunger part 120 to slide in the driven plunger cavity 210.

[0039] It should be noted that the area of the driving end face is designed to be smaller than the area of the driven end face. Under the same pressure, the displacement of the force transmitted by the transmission medium on the driven plunger part 120 is greater than the displacement of the driving plunger part 310, thereby realizing force amplification and fine adjustment. In particular, the design of this area difference allows a larger gap adjustment range to be achieved with smaller driving input, improving the sensitivity and accuracy of the adjustment.

[0040] The gap adjustment mechanism 1000 proposed by the utility model allows the roller gap to be adjusted during the operation of the dry coating machine, without the need to stop, greatly improving the production efficiency and flexibility. Through the difference design of the driving end face and the driven end face area, the amplification effect of the force is realized, so that even a small driving input can cause a significant gap change, meeting the needs of high-precision adjustment. Moreover, the entire gap adjustment mechanism 1000 is compact in structure, has few components, and is easy to install and maintain. The use of transmission medium also reduces mechanical wear and extends the service life.

[0041] On the other hand, the gap adjustment mechanism 1000 proposed by the utility model not only applies to the roller gap adjustment of the dry coating machine, but also can be widely used in other mechanical equipment that needs precise gap control, and has strong universality.

[0042] Reference Figure 1In some embodiments, there is an angle between the sliding direction of the driving plunger part 310 and the sliding direction of the driven plunger part 120, or they are perpendicular to each other. This allows the driving part 300 to be more flexible in different positions of the device, while ensuring effective force transmission.

[0043] In other embodiments, in addition to being perpendicular or having a fixed angle, the transmission mechanism can also be designed to have an adjustable angle, so that the angle of the sliding direction can be adjusted according to the spatial layout and needs of the device, to optimize the space utilization and performance of the device, and to achieve more flexible gap adjustment.

[0044] In some embodiments, specifically, the driving part 300 includes a ball screw assembly 330 and a motor 340. The motor 340 drives the ball screw to rotate, converting the rotary motion into linear motion, thereby driving the driving plunger part 310 to slide in the driving plunger cavity 320. The ball screw assembly 330 has high precision and stability, which can ensure the accuracy and reliability of the gap adjustment. In particular, according to the needs of the device, different types of motors 340 can be selected, such as servo motors 340, stepper motors 340, etc., to achieve more precise control.

[0045] Further, sensors can be installed on the ball screw assembly 330 or the driving plunger part 310 to monitor the changes in the gap and the driving state in real time, providing feedback for the automatic control system.

[0046] The driving plunger part 310 has an internal threaded driving hole 311 that cooperates with the ball screw. When the ball screw rotates, it drives the driving plunger part 310 to slide in the driving plunger cavity 320 through the internal threaded driving hole 311. In particular, according to the speed and accuracy requirements of the gap adjustment, different pitches of threads can be selected to achieve more flexible control.

[0047] The driving plunger cavity 320 and the transmission channel 321 are located in the seat body 200. This makes the structure of the entire gap adjustment mechanism 1000 more compact, facilitating installation and maintenance. According to the working environment and needs, different materials of the seat body 200 can be selected, such as cast iron, stainless steel, etc., to ensure the durability and reliability of the gap adjustment mechanism 1000.

[0048] In particular, a compact structure means that the overall size of the gap adjustment mechanism 1000 is reduced, and the space occupied is also reduced, which usually means fewer installation steps and a simpler installation process, thereby shortening the installation time and improving the installation efficiency. And it helps to reduce the vibration and shaking of the device, thereby improving the stability and reliability of the device. This is particularly important for devices that require high precision and stable output, which can ensure the stability and consistency of product quality.

[0049] The abutment part 110 can be adjusted in position relative to the driven plunger part 120. This allows the gap adjustment mechanism 1000 to be more flexible in adapting to components of different sizes and shapes, while achieving more precise gap control. Specifically, in some embodiments, a fine adjustment mechanism such as a fine adjustment screw, a fine adjustment nut, etc. is designed between the abutment part 110 and the driven plunger part 120 to achieve finer gap adjustment. After fine adjustment is completed, the abutment part 110 is fixed at the desired position by a locking mechanism to ensure the stability of the gap.

[0050] In other embodiments, a leveling screw and a leveling thread are provided between the abutment part 110 and the driven plunger part 120. By rotating the leveling screw, the position of the abutment part 110 can be coarsely adjusted first, so that positioning is quickly achieved, and then fine adjustment is achieved by the driving member 300, reducing the time of adjustment operation. Thus, precise control of the gap is achieved.

[0051] Referring to Figure 3 It should be noted that the driven part 100 is generally used to support and adjust the position of the movable roll to ensure that the gap between it and the fixed roll meets the requirements of the rolling process. In some embodiments, the number of driven parts 100 is at least one for basic gap adjustment.

[0052] In other embodiments, the number of driven parts 100 is several, or the driven part 100 has several driven plunger parts 120. This allows the gap adjustment mechanism 1000 to simultaneously control the gap between multiple components or to set multiple adjustment points on one component. In particular, redundant driven parts 100 or driven plunger parts 120 are provided at critical positions of the component to be adjusted to improve the reliability and stability of the equipment.

[0053] In particular, in some embodiments applied to a pole piece rolling mill, a thickness gauge can be added, which is electrically connected to the gap adjustment mechanism 1000 and controlled by a control system. The thickness gauge is installed at the discharge end of the rolling mill for real-time measurement of the thickness of the rolled pole piece. The thickness gauge uses a non-contact measurement principle, such as laser thickness measurement or X-ray thickness measurement, to ensure the accuracy and stability of the measurement. Before rolling starts, the roll gap is adjusted to a preset initial value by manual or automatic means, and the thickness gauge and control system are started. After rolling starts, the thickness gauge measures the thickness of the rolled pole piece in real time and sends the data to the control system. The control system calculates the required gap adjustment amount based on the received thickness data and the preset thickness target through a control algorithm. The control system sends the calculated adjustment amount to the gap adjustment mechanism 1000 to drive the ball screw assembly 330 to rotate and move the driven part 100, thereby accurately adjusting the gap between the rolls.

[0054] In particular, the above steps can be continuously cycled until the preset rolling thickness target is reached or the entire rolling process is completed.

[0055] Through the linkage control of the gap adjusting mechanism 1000 and the thickness gauge, real-time and accurate control of the rolling thickness is realized, greatly improving the uniformity and consistency of the pole piece thickness. And the automatic control system reduces manual intervention, shortens the adjustment time, improves the continuity and stability of the rolling process, thereby improving the production efficiency. Precise thickness control reduces the scrap rate and material waste, reducing production costs.

[0056] With reference to Figure 4 The utility model discloses a second aspect still proposes a roll device, the roll device includes any one gap adjusting mechanism 1000, still includes fixed roll 3000 and movable roll 2000, movable roll 2000 can be close to and far away from fixed roll 3000 relative, wherein the abutment portion 110 can abut the both ends of movable roll 2000 to prevent movable roll 2000 from being close to fixed roll 3000.

[0057] In specific embodiments, the fixed roll 3000 is fixedly installed on the rolling mill frame as the reference roll in the rolling process. The movable roll 2000 can move in the horizontal direction relative to the fixed roll 3000 for adjusting the roll gap. The both ends of the movable roll 2000 are installed on the sliding guide rail of the rolling mill frame through the bearing seat, ensuring its stability and precision during movement.

[0058] Before the rolling starts, first check whether each component of the roll device and the gap adjusting mechanism 1000 is installed correctly and connected reliably. Then, adjust the movable roll 2000 to the preset initial position by manual or automatic mode, ensuring that the gap between it and the fixed roll 3000 meets the requirements before rolling. Then, obtain the target rolling thickness, rolling speed, material type and other information, obtain the parameters of the roll device, and calculate the required gap adjustment amount. Finally, drive the driven part 100 to move through the rotation of the driven part 100, and then abut the both ends of the movable roll 2000 through the abutment part 110, push the movable roll 2000 to move on the sliding guide rail, to realize the adjustment of the gap. When the gap is adjusted to the preset target value, stop the action of the driving part 300, and lock the position of the movable roll 2000. At this time, the roll device is ready for rolling operation.

[0059] Preferably, the axis of the driven plunger part 120 and the abutment part 110 passes through the shaft core of the movable roll 2000 when the gap adjusting mechanism 1000 is arranged, to maximize the stress effect of the movable roll 2000 and improve the efficiency of gap adjustment.

[0060] It should be noted that the above operation steps can be automatically completed by the control system. During the rolling process, the control system can dynamically adjust the position of the movable roll 2000 according to the real-time monitored rolling material thickness, tension and other state information to maintain constant gap and rolling thickness.

[0061] By using the gap adjusting mechanism 1000, the rolling device can realize accurate control of the roll gap, thereby improving production efficiency and product quality.

[0062] Referring to FIG. 5, in particular, in other embodiments, the gap adjusting mechanism 1000 can also be used for the leveling operation of the rolls. Specifically, the number of followers 100 is two, which are respectively installed at both ends or appropriate positions in the axis direction of the movable roll 2000 to ensure effective support and adjustment of the movable roll 2000. Each follower 100 includes a driving part connected with the gap adjusting mechanism 1000 and an abutting part 110 abutting against the movable roll 2000. The height of the abutting part 110 can be set differently by adjusting the position of the driving part.

[0063] In specific embodiments, during the installation or debugging stage of the rolling device, according to the width, thickness and rolling speed of the rolling material and other parameters, the height of the two followers 100 is adjusted by the control system or manually, so that there is a certain difference between them. This difference is designed to compensate for the slight tilt of the movable roll 2000 caused by material deformation, roll elastic deformation and other factors during rolling, so as to maintain the parallelism between the movable roll 2000 and the fixed roll 3000. Through the different height of the followers 100, more accurate parallelism control of the movable roll 2000 can be achieved, thereby improving the quality and performance of the rolling product, and reducing the wear and fatigue of the rolls and the gap adjusting mechanism 1000, prolonging the service life of the equipment.

[0064] The third aspect of the utility model further provides a dry coating machine, the dry coating machine includes any one gap adjusting mechanism 1000 or rolling device as above. Through the above gap adjusting mechanism 1000 or rolling device, the dry coating machine can realize accurate control of the thickness of the material belt and control the thickness of the rolling pole piece.

[0065] In the description of the present specification, the description of the terms "one embodiment, some embodiments, illustrative embodiment, example, specific example or some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0066] The terms "first", "second", "third", "fourth", and the like in the description of this application and in the claims of the foregoing drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of the terms so

[0067] It is also to be noted that the terms "comprise", "comprising", "include", and / or "including", when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0068] In addition, the terms "comprise", "comprising", "have", "having", "include", "including" and their conjugates, are intended to cover a non-exclusive inclusion such that process, methods, articles, or apparatuses that comprise, have, include, or comprise a list of elements, do not necessarily include all those elements, but can include only those elements specifically listed, or can include additional elements not expressly listed or inherent to such process, method, article, or apparatus.

[0069] Also, the terms "comprise", "comprising", "include", "including" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises, has, includes or contains a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article or apparatus. An element proceeded by "comprises... a", "has... a", "includes... a", or "contains... a", does not, without more constraints, preclude the existence of additional identical elements in the process, method, article or apparatus that comprises, has, includes, or contains the element. The terms "a" and "an" are defined as one or more unless explicitly indicated to the contrary or the context clearly dictates otherwise.

[0070] The utility model embodiment has been explained in detail above in combination with the drawings, but the utility model is not limited to the above embodiment, within the knowledge range of ordinary skill in the art, still can make various changes on the premise of not departing from the utility model purpose.

Claims

1. A lash adjustment mechanism characterized by, A gap adjusting mechanism for adjusting a gap between two components, the gap adjusting mechanism comprising: a driven member comprising an abutting portion and a driven plunger portion connected to each other, the abutting portion being configured to abut against a movable one of the two components to define the gap between the two components; a seat body comprising a driven plunger cavity configured to accommodate the driven plunger portion; a driving member comprising a driving plunger portion, a driving plunger cavity configured to accommodate the driving plunger portion, and a transmission passage communicating between the driving plunger cavity and the driven plunger cavity, the transmission passage being configured to accommodate a transmission medium; the driving plunger portion is configured to slide along the driving plunger cavity to drive the transmission medium in the transmission passage, the transmission medium is configured to drive the driven plunger portion to slide along the driven plunger cavity, and the driven plunger portion is configured to drive the abutting portion to move; the driving plunger portion has a driving end face, and the driven plunger portion has a driven end face, an area of the driving end face being smaller than an area of the driven end face.

2. The lash adjustment mechanism of claim 1, wherein, a sliding direction of the driving plunger portion is configured to form an angle with a sliding direction of the driven plunger portion. alternatively, the sliding direction of the driving plunger portion is configured to be perpendicular to the sliding direction of the driven plunger portion.

3. The lash adjustment mechanism of claim 1, wherein, the driving member comprises a ball screw assembly configured to drive the driving plunger portion to slide, and a motor connected to the ball screw assembly.

4. The lash adjustment mechanism of claim 3, wherein, the driving plunger portion has a driving hole having an internal thread configured to cooperate with the screw rod.

5. The lash adjustment mechanism of claim 1, wherein, the driving plunger cavity and the transmission passage are located in the seat body.

6. The lash adjustment mechanism of claim 1, wherein, the abutting portion is configured to be position-adjustable relative to the driven plunger portion, and a position-adjusting direction of the abutting portion relative to the driven plunger portion is configured to be along the sliding direction of the driven plunger portion.

7. The lash adjustment mechanism of claim 6, wherein, the abutting portion is configured to be position-adjustable relative to the driven plunger portion, and the abutting portion and the driven plunger portion are configured to have a leveling screw and a leveling thread connected to the leveling screw.

8. The lash adjustment mechanism of claim 1, wherein, the number of the driven members is a plurality, and the seat body is configured to correspondingly have a plurality of the driven plunger cavities. alternatively, the driven member has a plurality of the driven plunger portions, and the seat body is configured to correspondingly have a plurality of the driven plunger cavities.

9. Roll arrangement, characterized in that the gap adjusting mechanism of any one of claims 1 to 8, further comprising a fixed roller and a movable roller, the movable roller being configured to be closer to and farther away from the fixed roller, and the abutting portion being configured to abut against both ends of the movable roller to prevent the movable roller from being closer to the fixed roller.

10. The roll arrangement of claim 9, wherein the number of the driven members is two, the two driven members are arranged along an axial direction of the movable roller, and heights of the two driven members are configured to be different to make the movable roller parallel to the fixed roller.

11. A dry coater characterized by the gap adjusting mechanism of any one of claims 1 to 8, or the roller device of claim 9 or 10.

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