Grinding device capable of conveniently controlling grinding gap

Abstract

The grinding device comprises a conveying assembly, a grinding platform, a lifting assembly and a grinding assembly, the conveying assembly comprises a driving source, a conveying support and a plurality of conveying mechanisms arranged on the conveying support side by side, and the conveying mechanisms can be driven by the driving source to rotate to form a conveying face. The lifting assembly can drive the grinding platform to ascend and descend, a plurality of receding grooves are formed in the grinding platform, the conveying mechanism is arranged in the receding grooves, in the ascending and descending process of the grinding platform, the conveying face can sink into the grinding platform or float out of the upper surface of the grinding platform, the grinding assembly is arranged above the grinding platform, and the measuring mechanism is arranged on the grinding assembly. The measuring mechanism is used for measuring the distance between the measuring mechanism and the grinding platform; dynamic switching between bearing and conveying of the to-be-ground product is achieved, stability and consistency of the grinding gap are guaranteed, the grinding gap measuring efficiency is improved, errors are reduced, and cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of panel manufacturing technology, and specifically to a grinding device that facilitates the control of grinding gaps. Background Technology

[0002] Polarization bonding is a crucial process in modern LCD / OLED display panel manufacturing, and its precision directly impacts the optical performance and product yield of the display. This process involves attaching polarizers to the top and bottom surfaces of the LCD / OLED panel, converting natural light into linearly polarized light in a specific direction. This polarized light then interacts with the optical anisotropy of the liquid crystal molecules, achieving precise display control. Before attaching the polarizers, the panel surface must be thoroughly cleaned to remove contaminants and particles. Currently, the industry primarily uses two methods: brush cleaning and abrasive cleaning. In the abrasive cleaning process, the cleaning effect of the abrasive belt directly affects the final product yield. The abrasive gap (i.e., the mechanical gap between the abrasive head and the panel) is one of the most critical parameters affecting the cleaning effect and needs to be monitored to avoid repeated measurements during line switching, which wastes manpower and time and ultimately impacts output.

[0003] In existing panel grinding and cleaning processes, a simultaneous operation mode with upper and lower dual grinding belts is commonly used. Through the synergistic effect of physical grinding and chemical cleaning, surface contaminants and particles can be effectively removed. Before grinding, the grinding gap (GAP) needs to be confirmed. As a critical parameter, the accuracy of the GAP directly affects the uniformity of cleaning, surface roughness, and the lifespan of the grinding belts. However, in existing processes, precise control of the GAP faces the following technical challenges:

[0004] 1. Measurement errors are prevalent: Traditional manual methods of measuring grinding gaps are inconsistent. Measurement results from different operators, novice and experienced workers, and even different measuring postures often yield inconsistent results. Even repeated measurements by the same operator under identical conditions can show fluctuations, caused by short-term repeatability errors, long-term repeatability errors, or cumulative errors due to fatigue. Furthermore, visual interpretation can also introduce errors. Readings from traditional mechanical measuring tools may be affected by parallax error, scale estimation error, or ambient lighting, impacting the accuracy of the measurement results. In addition, fluctuations in workshop temperature can also lead to measurement errors, possibly due to differences in thermal expansion coefficients, temperature drift of measuring tools, or thermal deformation of materials. These measurement errors can affect process quality through the following pathways: initial settings errors are directly transmitted to the grinding process; accumulated errors can cause shifts in the process window; and parameter mismatches can trigger a series of subsequent chain reactions.

[0005] 2. Measurement blind zone in the lower grinding head: The grinding gap of the lower grinding head is usually calculated using theoretical models rather than directly measured. However, when these theoretical models are applied to actual production, their limitations are inevitably exposed. The assumptions of the theoretical models deviate from actual working conditions. They assume the contact body is an ideal elastic body, but in reality, plastic deformation exists. The model ignores the potential impact of surface roughness of the grinding belt and does not consider the lubrication effect of coolant. Therefore, theoretical errors existing under static conditions amplify under dynamic conditions, and become even larger at high speeds. Furthermore, pressure fluctuations during actual contact also contribute to errors. This is caused by hydraulic system pulsation, uneven grinding belt thickness, or panel warping. Existing processing techniques cannot compensate for grinding belt wear in real time, further amplifying the risk of systemic errors. The direct transmission of initial calculation errors, dynamic errors introduced by pressure fluctuations, and time-varying errors caused by wear effects—these three factors coupled together create an amplification effect.

[0006] 3. Interference in the Conveying System: As a key component of the grinding and cleaning process, the motion accuracy of the conveying system directly affects the stability of the grinding gap. Existing roller conveying systems mainly have two types of error sources: mechanical errors and dynamic errors. Mechanical errors typically manifest as roundness errors, axial movement, and wear inherent in the rollers themselves. Roundness errors may arise from limitations in manufacturing precision, eccentric installation, or deformation caused by temperature. Axial movement during roller movement and back-and-forth movement may be caused by bearing clearances, transmission system backlash, or tolerances in the guide mechanism. Over long-term use, uneven roller wear occurs, such as circumferential wear, axial wear, and a decrease in surface hardness. Dynamic errors include the dynamic fluctuations of the panel, vibration transmission, and the inertial effect of speed fluctuations. Panel fluctuations are caused by roller spacing, panel stiffness, and conveying speed. Vibration transmission includes mechanical transmission, fluid medium transmission, and air propagation. Speed ​​fluctuations are linked to acceleration effects and inertial force coupling, causing fluctuations in the actual grinding gap.

[0007] Therefore, it is necessary to design a grinding device that can ensure consistent grinding gaps during the grinding process, improve process stability, provide an ideal surface condition for subsequent processes, and ultimately improve the optical performance and production efficiency of display products. Summary of the Invention

[0008] The purpose of this invention is to provide a grinding device that facilitates the control of the grinding gap, so as to solve the above-mentioned problems.

[0009] The technical solution adopted in this utility model is as follows:

[0010] A grinding device for easy control of grinding gap includes a conveying component, a grinding platform, a lifting component, and a grinding assembly. The conveying component includes a drive source, a conveying support, and several conveying mechanisms arranged side by side on the conveying support. The conveying mechanisms can rotate under the drive source to form a conveying surface. The lifting assembly can drive the grinding platform to rise and fall. Several clearance grooves are provided on the grinding platform, and the conveying mechanisms are disposed in the clearance grooves. During the rising and falling of the grinding platform, the conveying surface can sink into the grinding platform or float above the upper surface of the grinding platform. The grinding assembly is disposed above the grinding platform, and a measuring mechanism is provided on the grinding assembly for measuring the distance between it and the grinding platform.

[0011] As a further improvement of this utility model, the measuring mechanism is a mechanical micrometer.

[0012] As a further improvement of the present invention, the driving source includes a drive motor and a magnetic ring mechanism. The drive motor can drive the magnetic ring mechanism to rotate. The transmission mechanism includes a transmission shaft, with bearings respectively sleeved at both ends of the transmission shaft. A bearing groove is provided on the transmission bracket, and the bearing is disposed in the bearing groove. The magnetic ring mechanism is used to drive the transmission shaft to rotate.

[0013] As a further improvement of this utility model, a number of rollers are sleeved on the transmission shaft, and the rollers rotate synchronously with the transmission shaft. The rollers are anti-static rollers.

[0014] As a further improvement of this utility model, the depth of the clearance groove is greater than the diameter of the roller.

[0015] As a further improvement of the present invention, the magnetic ring mechanism includes a drive shaft, at least one first magnetic ring and at least one second magnetic ring. The drive motor can drive the drive shaft to rotate. The drive shaft is arranged perpendicularly to the transmission shaft. The first magnetic ring is sleeved on the drive shaft and can rotate synchronously with the drive shaft. The second magnetic ring is sleeved on the transmission shaft and can rotate synchronously with the transmission shaft. The first magnetic ring and the second magnetic ring cooperate with each other.

[0016] As a further improvement of the present invention, the number of the first magnetic ring, the second magnetic ring, and the transmission shaft are equal, and a plurality of the first magnetic rings are arranged side by side on the transmission shaft.

[0017] As a further improvement of the present invention, the grinding assembly includes a vertically arranged grinding base plate, a driving mechanism and a grinding belt are provided on the grinding base plate, and the driving mechanism can drive the grinding belt to swing back and forth.

[0018] As a further improvement of this utility model, the measuring mechanism is located on the side of the grinding base plate away from the driving mechanism.

[0019] As a further improvement of this utility model, a number of guide rods are provided below the grinding platform, and the guide rods are used to guide the lifting and lowering movement of the grinding platform.

[0020] The beneficial effects of this utility model are as follows:

[0021] Through the aforementioned structure, an intelligent collaborative system composed of a liftable grinding platform, a conveyor shaft, and rollers is established. This system enables dynamic switching between carrying and conveying the product to be ground, ensuring the stability and consistency of the grinding gap. It improves the uniformity of surface roughness and the stability of processing accuracy, increases the efficiency of measuring the grinding gap, reduces human error, and saves labor costs. The contactless transmission between the magnetic ring assembly and the motor-driven rollers solves problems such as wear, noise, and instability in traditional transmission components, reducing maintenance costs and improving production continuity and processing reliability. Furthermore, the modular integrated design of the grinding platform and conveyor assembly not only results in a compact structure and small footprint but also offers the advantage of flexible layout. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the grinding device during conveying;

[0023] Figure 2 This is a schematic diagram of the grinding device used in grinding.

[0024] Figure 3 This is a partial structural diagram of the transmission component;

[0025] Figure 4 This is a schematic diagram of the grinding assembly.

[0026] Wherein: 1-Product to be ground, 2-Workbench, 31-Transfer bracket, 32-Transfer shaft, 33-Magnetic ring mechanism, 331-Drive shaft, 332-First magnetic ring, 333-Second magnetic ring, 34-Bearing, 35-Bearing groove, 36-Roller, 4-Grinding platform, 41-Leaning groove, 5-Lifting assembly, 6-Grinding assembly, 61-Grinding base plate, 62-Grinding sand belt, 7-Measuring mechanism, 8-Guide rod. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0028] If the description of this utility model involves directions (e.g., up, down, left, right, front, back, outside, inside, etc.), then the directions involved need to be defined. For example, "To clearly express the position and direction described in this utility model, the operator of the instrument is used as a reference, the end closer to the operator is the proximal end, and the end farther from the operator is the distal end." Or, the paper can be used as a reference. Of course, if the positional relationship between the two is defined by mutual reference in the subsequent description, then this definition is not required.

[0029] A grinding device for easy control of the grinding gap, used for grinding the product to be ground 1, such as... Figures 1-2 As shown, the grinding device includes a worktable 2, on which a conveying component, a grinding platform 4, a lifting component 5, and a grinding component 6 are provided. The conveying component is used to convey the product 1 to be ground. The grinding platform 4 is used to support the product 1 to be ground during grinding. The lifting component 5 can drive the grinding platform 4 to move up and down in the vertical direction. The grinding component 6 is used to grind the product 1 to be ground.

[0030] Specifically, the conveying assembly includes a drive source, a conveying support 31, and several conveying mechanisms. These conveying mechanisms are arranged side-by-side on the conveying support 31. Driven by the drive source, each conveying mechanism can rotate to form a conveying surface, transporting the product 1 to be polished on it. The lifting assembly 5 can drive the polishing platform 4 to rise and fall. Several clearance grooves 41 are provided on the polishing platform 4, and the conveying mechanisms are disposed within these grooves. During the rising and falling of the polishing platform 4, the conveying surface can sink into the polishing platform 4 or float above its upper surface. The polishing assembly 6 is disposed above the polishing platform 4, and a measuring mechanism 7 is provided on the polishing assembly 6. The measuring mechanism 7 is used to measure the distance between itself and the polishing platform 4.

[0031] That is, the grinding platform 4 has two extreme movement positions during its lifting and lowering motion—the conveying position and the grinding position. The conveying position is the lowest position of the grinding platform 4 during its descent, and the grinding position is the highest position of the grinding platform 4 during its ascent. When the grinding platform 4 is in the conveying position, the conveying surface of the conveying mechanism floats out of the grinding platform 4, that is, the conveying surface of the conveying mechanism is higher than the upper surface (i.e., the bearing surface) of the grinding platform 4, and the product to be ground 1 contacts the conveying surface of the conveying mechanism, so that the conveying mechanism can transport the product to be ground 1. When the grinding platform 4 is in the grinding position, the conveying surface of the conveying mechanism sinks into the grinding platform 4, that is, the upper surface of the grinding platform 4 is higher than the conveying surface of the conveying mechanism, and the product to be ground 1 contacts the upper surface of the grinding platform 4. The product to be ground 1 and the grinding platform 4 remain relatively stationary, and the grinding component 6 can spray water to form a water environment. In this water environment, the adsorption force between the grinding platform 4 and the product to be ground 1 increases, realizing the bearing of the product to be ground 1 by the grinding platform 4. At this time, the grinding component 6 can grind the product to be ground 1.

[0032] Specifically, the measuring mechanism 7 is a mechanical micrometer. Mechanical micrometers have the advantages of high measurement accuracy, reliable structure, and long service life. Most importantly, mechanical micrometers are intuitive to operate, can be read directly, and are easy to maintain. In addition to mechanical micrometers, strain gauge displacement sensors, image measuring instruments, digital micrometers, and other products can also be used for measurement.

[0033] Specifically, the clearance slots 41 correspond one-to-one with the transmission shafts 32, the positions of the clearance slots 41 correspond one-to-one with the positions of the transmission shafts 32, and the number of clearance slots 41 corresponds one-to-one with the number of transmission shafts 32.

[0034] As one embodiment of this utility model, such as Figure 3 As shown, the driving source includes a drive motor and a magnetic ring mechanism 33. The drive motor can drive the magnetic ring mechanism 33 to rotate. The conveying mechanism includes a conveying shaft 32. Several conveying shafts 32 are arranged in parallel on the conveying support 31. The conveying shafts 32 can rotate around their axes under the drive of the driving source. The several conveying shafts 32 can rotate synchronously to convey the product 1 to be ground located on them. The magnetic ring mechanism 33 is used to drive the conveying shafts 32 to rotate.

[0035] Specifically, bearings 34 are respectively fitted at both ends of the transmission shaft 32, and bearing grooves 35 are provided on the transmission bracket 31. The bearings 34 are set in the bearing grooves 35. The bearings 34 are used to provide freedom of rotation for the transmission shaft 32. Through their own low coefficient of friction, the energy consumption of the transmission shaft 32 during operation is effectively reduced, while mechanical wear is reduced and the service life of the equipment is extended.

[0036] Specifically, a plurality of rollers 36 coaxial with the conveyor shaft 32 are provided on the conveyor shaft 32. The rollers 36 are antistatic rollers 36. The antistatic rollers 36 can not only effectively avoid static electricity generated by friction during the conveying process and prevent static electricity from attracting dust and impurities that affect the quality of the product to be ground 1, but also have good wear resistance and chemical stability and moderate friction. They can ensure that the product to be ground 1 will not slip during the conveying process and avoid scratching damage to the surface of the product to be ground 1, thereby achieving stable and safe conveying of the product to be ground 1.

[0037] Furthermore, the vertical depth of the relief groove 41 is greater than the diameter of the roller 36, so that after the grinding platform 4 is raised, the conveying shaft 32 and the roller 36 can be completely submerged in the relief groove 41.

[0038] Specifically, the drive motor can be mounted on the conveyor bracket 31, such as... Figure 3 As shown, the magnetic ring mechanism 33 includes a drive shaft 331, at least one first magnetic ring 332, and at least one second magnetic ring 333. The drive shaft 331 can be mounted on a conveying bracket 31, and the drive motor can drive the drive shaft 331 to rotate. The first magnetic ring 332 is sleeved on the drive shaft 331, and the first magnetic ring 332 is coaxially arranged with the drive shaft 331 and can rotate synchronously. The second magnetic ring 333 is sleeved on a conveying shaft 32, and the second magnetic ring 333 is coaxially arranged with the conveying shaft 32 and can rotate synchronously. The first magnetic ring 332 and the second magnetic ring 333... There is a gap between the first magnetic ring 332 and the second magnetic ring 333. The transmission shaft 331 is perpendicular to the transmission shaft 32. Thus, the axis of the first magnetic ring 332 is perpendicular to the axis of the second magnetic ring 333. When the drive motor drives the transmission shaft 331 to rotate, the first magnetic ring 332 located on the transmission shaft 331 also rotates, forming a magnetic field. The second magnetic ring 333 is located in the magnetic field and cuts the magnetic lines of force to generate magnetic induction force, thereby realizing the rotation of the second magnetic ring 333. Then, the second magnetic ring 333 drives the transmission shaft 32 to rotate.

[0039] Theoretically, a single first magnetic ring 332 and a single second magnetic ring 333 can also achieve the transmission function. However, in order to improve the replaceability, reliability and performance of the module, the number of first magnetic rings 332, second magnetic rings 333 and transmission shafts 32 are equal and not less than one. Several first magnetic rings 332 are arranged side by side on the transmission shaft 331, and the number of first magnetic rings 332 and second magnetic rings 333 correspond one-to-one. The positions of the first magnetic rings 332 and second magnetic rings 333 are corresponding. One second magnetic ring 333 is provided on each transmission shaft 32.

[0040] During operation, the drive motor rotates, driving the transmission shaft 331 to rotate. The first magnetic ring 332 on the transmission shaft 331 rotates synchronously with the transmission shaft 331, thereby driving the second magnetic ring 333 to rotate. As a result, the conveying shaft 32 rotates synchronously with the second magnetic ring 333 within the bearing 34. The roller 36 located on the conveying shaft 32 rotates synchronously with the transmission shaft 331, realizing the conveying of the product 1 to be ground.

[0041] In one embodiment of this utility model, the lifting assembly 5 is a cylinder, piston, and piston rod structure. The cylinder drives the piston to perform reciprocating motion in the vertical direction, the piston drives the piston rod to perform reciprocating motion in the vertical direction, and the piston rod drives the grinding platform 4 to perform reciprocating motion in the vertical direction.

[0042] Furthermore, a number of guide rods 8 are provided between the grinding platform 4 and the worktable 2. The guide rods 8 are used to guide the lifting and lowering movement of the grinding platform 4, improve the stability of the lifting and lowering movement, and reduce the impact of possible fluctuations on the grinding process and grinding results.

[0043] As one embodiment of this utility model, such as Figure 4 As shown, the grinding assembly 6 includes a grinding base plate 61, which is vertically arranged. A driving mechanism and a grinding belt 62 are mounted on the grinding base plate 61. The driving mechanism can drive the grinding belt 62 to reciprocate stably and controllably, thereby performing uniform and efficient grinding of the product 1 to be ground. Since the grinding platform 4 is self-elevating, the grinding belt 62 does not need to be raised or lowered during the grinding process, thus avoiding the impact of fluctuations that may occur during the raising and lowering of the grinding belt 62 on the grinding process and results.

[0044] Specifically, a tensioning mechanism is provided on the grinding base plate 61. The tensioning mechanism is used to adjust the tension of the grinding belt 62 to ensure that the grinding belt 62 maintains a stable tension during high-speed oscillation, effectively avoiding uneven grinding caused by the grinding belt 62 being too loose or too tight, and providing a reliable guarantee for high-quality processing.

[0045] Specifically, a spraying mechanism is provided on the grinding base plate 61. The spraying mechanism is used to continuously and evenly spray cooling water onto the product 1 to be ground. This not only removes the heat generated during the grinding process in time and prevents the workpiece from deforming due to local overheating, but also plays a role in lubrication and cleaning, reducing secondary damage to the processing surface by grinding debris and improving the grinding effect.

[0046] As an embodiment of this utility model, the measuring mechanism 7 is located on the side of the grinding base plate 61 away from the second lifting component 5, so that the measuring mechanism 7 does not interfere with the driving mechanism and the grinding belt 62, thus ensuring the accuracy and consistency of the measurement results.

[0047] The working principle of this utility model is as follows:

[0048] The product to be ground, 1, has two opposing surfaces, A and B. During loading, if... Figure 1 As shown, the product to be ground 1 is placed with its A side facing up on the roller 36 of the conveying assembly. The lifting assembly 5 drives the grinding platform 4 to descend to the conveying position. The drive motor drives the magnetic ring mechanism 33 to transmit rotation to the conveying shaft 32. The roller 36 on the conveying shaft 32 rotates, thereby realizing the conveying and feeding of the product to be ground 1.

[0049] When the product 1 to be ground is conveyed to the area below the grinding assembly 6, that is, when it reaches the designated grinding area, such as... Figure 2 As shown, the drive motor stops running, the roller 36 stops rotating, the lifting component 5 drives the grinding platform 4 to rise to the grinding position, the measuring mechanism 7 measures the distance between itself and the upper surface of the grinding platform 4 to a set value, the grinding platform 4 carries the product to be ground 1, the spraying mechanism sprays water onto the product to be ground 1 to form a water environment, the adsorption force between the grinding platform 4 and the product to be ground 1 increases, and the drive mechanism drives the grinding belt 62 to reciprocate to grind the A side of the product to be ground 1;

[0050] After grinding is completed, the lifting component 5 drives the grinding platform 4 to descend to the conveying position, and the conveying component continues to convey the product 1 to be ground, and repeats the above steps until the A side of this batch of products 1 to be ground is all ground.

[0051] After that, flip the product 1 to be ground over and place it on the roller 36 of the conveying assembly with its B side facing up. Repeat the above lifting, conveying, measuring and grinding actions until the B side of this batch of products 1 to be ground is ground.

[0052] At this point, both sides A and B of product 1 have been ground.

[0053] The grinding device provided by this utility model, which facilitates the control of grinding gaps, solves the problems of difficult grinding gap control, cumbersome measurement, and unstable transmission in traditional grinding equipment. Throughout the grinding process, the liftable grinding platform 4, in conjunction with the conveyor shaft 32 and rollers 36, forms an intelligent collaborative system that dynamically switches between carrying and conveying the product 1 to be ground. This maintains a consistent grinding gap, improves the uniformity of surface roughness, and enhances the stability of processing accuracy. Furthermore, the measurement of the grinding gap is very simple and quick, optimizing processing efficiency by reducing the original calibration time from 4 hours to 0.25 hours. The automated measurement process reduces human error, lowers labor costs, and significantly improves processing efficiency and economic benefits. Simultaneously, this switchable carrying and conveying mode adopts a modular design. The design organically integrates the functions of carrying and conveying, resulting in a compact and sophisticated overall structure. This highly integrated design not only saves workshop space but also gives the equipment the advantage of flexible layout, easily adapting to production lines of different sizes and types. The magnetic ring assembly, in conjunction with the motor, drives the roller 36 to rotate and convey the product 1 to be ground. This contactless conveying method completely eliminates the inherent defects of traditional gear and belt drives—the wear and loosening of traditional transmission components caused by long-term friction, as well as the resulting noise pollution and transmission instability. This effectively reduces the frequency and cost of equipment maintenance and significantly improves the continuity and reliability of production.

[0054] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0055] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementation methods or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A grinding device for easy control of the grinding gap, characterized in that: The assembly includes a conveying component, a grinding platform (4), a lifting component (5), and a grinding component (6). The conveying component includes a drive source, a conveying bracket (31), and several conveying mechanisms arranged side by side on the conveying bracket (31). The conveying mechanism can rotate under the drive of the drive source to form a conveying surface. The lifting component (5) can drive the grinding platform (4) to rise and fall. Several clearance grooves (41) are provided on the grinding platform (4). The conveying mechanism is located in the clearance grooves (41). During the rising and falling of the grinding platform (4), the conveying surface can sink into the grinding platform (4) or float out of the upper surface of the grinding platform (4). The grinding component (6) is located above the grinding platform (4). A measuring mechanism (7) is provided on the grinding component (6). The measuring mechanism (7) is used to measure the distance between itself and the grinding platform (4).

2. The grinding device for easy control of the grinding gap according to claim 1, characterized in that: The measuring mechanism (7) is a mechanical micrometer.

3. The grinding device for easy control of the grinding gap according to claim 1, characterized in that: The driving source includes a drive motor and a magnetic ring mechanism (33). The drive motor can drive the magnetic ring mechanism (33) to rotate. The transmission mechanism includes a transmission shaft (32). Bearings (34) are respectively sleeved at both ends of the transmission shaft (32). A bearing groove (35) is provided on the transmission bracket (31). The bearings (34) are set in the bearing groove (35). The magnetic ring mechanism (33) is used to drive the transmission shaft (32) to rotate.

4. The grinding device for easy control of the grinding gap according to claim 3, characterized in that: A plurality of rollers (36) are fitted on the conveyor shaft (32), and the rollers (36) rotate synchronously with the conveyor shaft (32). The rollers (36) are antistatic rollers (36).

5. The grinding device for easy control of the grinding gap according to claim 4, characterized in that: The depth of the clearance groove (41) is greater than the diameter of the roller (36).

6. The grinding device for easy control of the grinding gap according to claim 3, characterized in that: The magnetic ring mechanism (33) includes a drive shaft (331), at least one first magnetic ring (332) and at least one second magnetic ring (333). The drive motor can drive the drive shaft (331) to rotate. The drive shaft (331) is perpendicular to the transmission shaft (32). The first magnetic ring (332) is sleeved on the drive shaft (331). The first magnetic ring (332) and the drive shaft (331) can rotate synchronously. The second magnetic ring (333) is sleeved on the transmission shaft (32). The second magnetic ring (333) and the transmission shaft (32) can rotate synchronously. The first magnetic ring (332) and the second magnetic ring (333) cooperate with each other.

7. The grinding device for easy control of the grinding gap according to claim 6, characterized in that: The number of the first magnetic ring (332), the second magnetic ring (333), and the transmission shaft (32) are equal, and several of the first magnetic rings (332) are arranged side by side on the transmission shaft (331).

8. The grinding device for easy control of the grinding gap according to claim 1, characterized in that: The grinding assembly (6) includes a vertically arranged grinding base plate (61), on which a driving mechanism and a grinding belt (62) are provided. The driving mechanism can drive the grinding belt (62) to swing back and forth.

9. The grinding device for easy control of the grinding gap according to claim 8, characterized in that: The measuring mechanism (7) is located on the side of the grinding base plate (61) away from the driving mechanism.

10. The grinding device for easy control of the grinding gap according to claim 1, characterized in that: Several guide rods (8) are provided below the grinding platform (4), and the guide rods (8) are used to guide the lifting and lowering movement of the grinding platform (4).

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