A coating machine deviation correcting mechanism

Abstract

The utility model relates to the field of rectification mechanism, and disclose a kind of coating machine rectification mechanism, including bottom plate, the top of bottom plate both ends is equipped with vertical plate, rotationally arranged between two vertical plates there is rotating shaft, and one side vertical plate is fixedly installed with motor, the rotating shaft of motor is connected with rotating shaft, the middle region of rotating shaft is integrally formed with middle annular protrusion, the inside of rotating shaft is provided with screw rod structure, the outside of rotating shaft is provided with two groups of movable ring that can mirror image moves, screw rod structure is used to drive two movable rings to move, and the end of two movable rings mutually diverging is integrally formed with annular protrusion, the mechanism is preliminarily positioned to coating base material by middle annular protrusion, and the accurate fit of annular protrusion on two groups of movable rings and base material side surface, can rigidly limit the horizontal movement of base material from two sides, effectively avoid the "run position" phenomenon of base material in transmission process.

Description

Technical Field

[0001] This utility model relates to the field of correction mechanisms, specifically a correction mechanism for a coating machine. Background Technology

[0002] In the manufacturing process of lithium-ion batteries, the double-sided gravure coating process is one of the core steps. Its main function is to uniformly coat the electrode slurry onto both sides of a metal foil substrate (such as copper foil or aluminum foil) to form an electrode coating with a specific thickness and uniformity. The consistency of the coating directly affects the battery's energy density, cycle life, and safety performance. However, in the actual coating production process, due to multiple factors, the coating substrate is prone to lateral shift during transport, posing significant challenges to production quality and efficiency.

[0003] From a production perspective, the substrate for double-sided gravure coating of lithium batteries is typically supplied in roll form. During continuous transport, the substrate undergoes multiple processes, including unwinding, coating, drying, and rewinding. The transport paths between these processes are relatively long, and stable tension must be maintained. However, due to factors such as inherent thickness variations in the substrate itself, irregular edges, insufficient installation precision of transport equipment (e.g., guide rollers), uneven surface wear, and instantaneous fluctuations in the tension control system, the substrate may gradually deviate from the preset center path during transport, resulting in a "misalignment" phenomenon. If the misaligned substrate is not corrected in time, it can lead to a series of serious problems: Firstly, the misaligned substrate may cause slurry to be coated outside the substrate edges, resulting in slurry waste, contaminating production equipment, and increasing cleaning costs and downtime. Secondly, substrate misalignment can prevent the coatings on both sides from being precisely aligned, resulting in "misalignment," which reduces the effective area of ​​the electrodes, affects the electrochemical performance of the battery, and may even pose safety hazards during battery charging and discharging due to excessively thick or thin coatings in certain areas.

[0004] Traditional coating alignment methods rely heavily on manual adjustments. Operators visually observe the substrate's transport position and manually adjust the position or tension parameters of the guide rollers to correct deviations. This method is not only inefficient and unsuitable for high-speed, continuous coating production, but also highly subjective, making it difficult to guarantee alignment accuracy. Over-adjustment or delayed adjustments can easily occur, leading to unstable coating quality. As the lithium-ion battery industry moves towards higher energy density and greater consistency, the precision requirements for coating processes are increasing, and traditional manual alignment methods can no longer meet production demands.

[0005] To address the aforementioned issues, automated web guiding devices have gradually emerged in the industry. However, existing automated web guiding devices still have certain limitations. Some devices use photoelectric sensors to detect the edge position of the substrate and drive actuators (such as cylinders or servo motors) through a control system to adjust the angle of the guide rollers to achieve web guiding. Although these devices achieve automated operation, their structure is relatively complex, involving the coordinated work of multiple components such as sensors, controllers, and actuators, resulting in high costs. Furthermore, when dealing with coating substrates of different widths, the adjustment process is cumbersome, requiring the replacement of suitable guide rollers or complex parameter resetting, resulting in poor flexibility. In addition, the actuator response speed of some web guiding devices is slow, making it difficult to quickly and accurately correct deviations when the substrate is transported at high speed, still posing a risk to coating quality. Therefore, we propose a web guiding mechanism for coating machines. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a coating machine correction mechanism, which solves the aforementioned problems.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a coating machine correction mechanism, including a base plate, with vertical plates installed at both ends of the top of the base plate, and a rotating shaft rotatably arranged between the two vertical plates. A motor is fixedly installed on one of the vertical plates, and the rotating shaft of the motor is connected to the rotating shaft. A central annular protrusion is integrally formed in the middle area of ​​the rotating shaft. A lead screw structure is provided inside the rotating shaft, and two sets of movable rings capable of mirror-moving are provided on the outer side of the rotating shaft. The lead screw structure is used to drive the two movable rings to move, and the opposite ends of the two movable rings are integrally formed with annular protrusions.

[0008] Preferably, the rotating shaft has a strip groove, and an inner circular block is provided inside the rotating shaft at the position corresponding to the movable ring. A connecting plate is integrally formed on the inner circular block at the position corresponding to the strip groove. The connecting plate is connected to the movable ring, and the lead screw structure is connected to the inner circular block.

[0009] Preferably, the lead screw structure includes a lead screw and a limiting component. The limiting component is located at the end of the lead screw away from the motor. The two ends of the lead screw are respectively provided with external threads in different directions. The two ends of the lead screw are respectively threadedly connected to two internal circular blocks. When it is necessary to adjust the distance between the two movable rings, the limiting component is released, and then the lead screw is rotated. Due to the different thread directions, the two internal circular blocks will move in a mirror image, thereby realizing the mirror image movement of the two movable rings.

[0010] Preferably, one end of the lead screw extends to the outside of the rotating shaft, and the limiting component is disposed at the end of the lead screw extending to the outside of the rotating shaft.

[0011] Preferably, one end of the rotating shaft has multiple sets of insertion slots equidistantly spaced at the position corresponding to the limiting component. The multiple sets of insertion slots are arranged around the lead screw, and the insertion end of the limiting component is inserted into the corresponding insertion slot.

[0012] Preferably, the limiting component includes an annular cap, a protrusion, a tension spring, and a pin. A circular block is fixedly installed at one end of the lead screw located outside the rotating shaft. A groove is provided on the circular block, and a tension spring is fixedly installed inside the groove. A protrusion is fixedly installed at one end of the tension spring. The protrusion is fixedly installed inside the annular cap, and the annular cap is located outside the circular block. A pin is fixedly installed at the position of the annular cap corresponding to the insertion slot, and the pin is inserted into the insertion slot at the corresponding position.

[0013] Preferably, both the groove and the protrusion have rectangular cross-sections.

[0014] Preferably, when the annular cap is pulled back normally, it will pull the protrusion toward the lead screw, thus keeping the pin always engaged with the corresponding slot.

[0015] Compared with the prior art, the present invention provides a coating machine correction mechanism, which has the following beneficial effects:

[0016] Significantly improves the accuracy of deviation correction and ensures the stability of coating quality.

[0017] This mechanism uses a central annular protrusion to initially position the coating substrate. Combined with the precise fit of the annular protrusions on two sets of movable rings with the sides of the substrate, it rigidly restricts the lateral movement of the substrate from both sides, effectively preventing "misalignment" during transport. Compared to traditional manual correction methods relying on visual judgment, its adhesive correction structure can control the substrate offset to a very small range, ensuring precise alignment of the front and back coatings in the double-sided gravure coating of lithium batteries. This avoids the problem of reduced effective electrode area due to "misalignment," while also preventing localized coatings that are too thick or too thin. This fundamentally reduces safety hazards during battery charging and discharging, significantly improving the consistency and stability of coating quality, and providing crucial assurance for achieving subsequent battery performance standards.

[0018] It is compatible with a wide range of substrate widths, offering great flexibility and versatility.

[0019] The mechanism utilizes a lead screw structure to achieve mirror-image movement of two sets of movable rings. The reverse thread design at both ends of the lead screw ensures that the two movable rings move closer or further apart synchronously during adjustment. The spacing can be quickly adjusted simply by pulling the ring cap to release the limit and rotating the lead screw, without the need to replace guide rollers or perform complex parameter settings. This adjustment method can flexibly adapt to lithium battery double-sided gravure coating substrates of different widths. Whether the substrate is narrow or wide, the ring protrusions can achieve precise alignment with the side of the substrate through simple operation. Compared with the limitations of existing automated correction equipment that requires readjustment for different width substrates, this significantly improves the versatility of the equipment and reduces the changeover costs and time when producing multi-specification products.

[0020] Its simple structure and easy operation reduce usage and maintenance costs.

[0021] The entire mechanism adopts an integrated design, with core components including only a base plate, vertical plate, rotating shaft, lead screw, and movable ring. It eliminates complex photoelectric sensors, multi-module controllers, and other expensive components, resulting in lower manufacturing costs and significantly reduced assembly and maintenance difficulty. Operationally, spacing settings can be completed simply by manually pulling the ring cap and rotating the lead screw, eliminating the need for complex programming or debugging by specialized technicians. Even ordinary operators can quickly learn to use it, solving the problems of high operational barriers and reliance on professional personnel for maintenance in existing automated equipment. Furthermore, the fewer components and simplified structure reduce potential failure points, lower the frequency and cost of daily maintenance, and extend the equipment's lifespan.

[0022] It has a fast response time and is suitable for high-speed production.

[0023] Compared to some existing automated coating correction equipment that relies on a multi-stage response process involving sensor detection, signal transmission, and actuator actuation, this mechanism achieves coating correction directly through the fit of the mechanical structure, eliminating the need for signal conversion and waiting time for multiple components to coordinate. During high-speed substrate transport, once a substrate misalignment trend is detected, the spacing between the movable rings can be quickly adjusted to allow the annular protrusions to rapidly fit against the side of the substrate, correcting the misalignment and preventing the expansion of coating deviation due to response lag. This instantaneous response feature can adapt to the high-speed continuous production rhythm of modern lithium battery coating production lines, effectively reducing slurry waste and equipment contamination caused by untimely correction, and improving overall production efficiency.

[0024] Reduce slurry waste and equipment contamination, and lower production costs.

[0025] The precise positioning of the substrate by the annular protrusion effectively prevents the slurry from spreading beyond the substrate edges due to substrate misalignment, reducing slurry waste at the source and lowering raw material costs. Simultaneously, it avoids slurry overflow contaminating surrounding components such as conveying equipment and drying devices, reducing downtime and cleaning material consumption, indirectly increasing the effective operating time of the production line. Furthermore, the stable correction effect reduces substrate rework or scrap due to substandard coating quality, further lowering production process costs and providing strong support for improving enterprise economic efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 for Figure 1 A magnified view of part A in the diagram;

[0028] Figure 3 This is a side view of the present invention;

[0029] Figure 4 for Figure 3 BB cross-sectional diagram in the middle;

[0030] Figure 5 for Figure 4 A magnified view of part C in the diagram;

[0031] Figure 6 for Figure 4 A magnified view of part D in the diagram.

[0032] In the diagram: 1. Base plate; 2. Vertical plate; 3. Motor; 4. Rotating shaft; 5. Middle annular protrusion; 6. Movable ring; 7. Annular protrusion; 8. Strip groove; 9. Internal circular block; 10. Connecting plate; 11. Lead screw; 12. Groove; 13. Tension spring; 14. Insertion groove; 15. Annular cap; 16. Protrusion; 17. Pin. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figure 1-6 A coating machine correction mechanism, with the following structure:

[0035] Base plate 1: As the basic support component of the entire coating machine's correction mechanism, its top two ends are used to install vertical plates 2, providing a stable installation platform for the subsequent assembly of various structures, ensuring that the entire mechanism remains structurally stable during operation, and avoiding the correction effect being affected by factors such as vibration.

[0036] Vertical plates 2: Two are provided, which are fixedly installed at the top ends of the base plate 1 respectively. The two vertical plates 2 are used to rotate the rotating shaft 4, and one of the vertical plates 2 is also used to fix the motor 3. They play a key role in connecting the base plate 1, supporting the rotating shaft 4 and carrying the motor 3. They are important support structures for the mechanism to realize rotation drive and component connection.

[0037] Motor 3: Fixedly mounted on the vertical plate 2 on one side, its rotating shaft is connected to the rotating shaft 4. Motor 3 serves as a power source, driving the rotating shaft 4 to rotate during operation, providing power for the rotation of the rotating shaft 4 in the entire correction mechanism, thereby driving the lithium battery double-sided gravure coating passing over the surface of the rotating shaft 4 for conveying, and achieving stable transmission in conjunction with the correction action.

[0038] Rotating shaft 4: Rotatably mounted between two vertical plates 2, with one end connected to the rotating shaft of motor 3. Its central area has an integrally formed central annular protrusion 5, an internal lead screw structure, and two sets of mirror-movable movable rings 6 on the outer side. A strip groove 8 is formed on the shaft body, and multiple sets of insertion slots 14, equidistant from the lead screw 11, are formed at one end corresponding to the position of the limiting component. The rotating shaft 4 is the core transmission and support component of the correction mechanism. It can rotate under the drive of motor 3 to transport coating material, and also provides a mounting base for components such as the central annular protrusion 5, movable rings 6, and lead screw structure. Simultaneously, its structural design meets the operational requirements of each component.

[0039] The central annular protrusion 5 is integrally formed in the middle area of ​​the rotating shaft 4, and its surface is used to guide the double-sided gravure coating of the lithium battery. During the correction process, the coating material is transferred along the surface of the central annular protrusion 5. The central annular protrusion 5 plays a role in initial positioning and supporting the coating material, ensuring that the coating material remains near the middle area of ​​the rotating shaft 4 during the transfer process, providing a reference for the subsequent correction action of the movable ring 6.

[0040] Movable rings 6: Two sets in total, located on the outer side of the rotating shaft 4, capable of mirror-like movement driven by a lead screw structure. Each of the two movable rings 6 has an annular protrusion 7 integrally formed at its opposite end, and is connected to the internal circular block 9 inside the rotating shaft 4 via a connecting plate 10. Their main function is to adjust the spacing according to the width of the double-sided gravure coating of the lithium battery, ensuring that the side of the annular protrusion 7 fits against the side of the coating material, thereby guiding and correcting the coating material and preventing it from shifting during transport.

[0041] Annular protrusion 7: integrally formed on one end of the two movable rings 6 that are opposite to each other. After the distance between the two movable rings 6 is adjusted, the side of the annular protrusion 7 will fit against the side of the double-sided gravure coating of the lithium battery and directly contact the coating material. By fitting the side, the lateral movement of the coating material is restricted, thereby guiding and correcting the coating material. It is one of the direct execution components of the correction action.

[0042] The slot 8 is formed on the rotating shaft 4, and its position corresponds to the connecting plate 10 on the inner circular block 9. The connecting plate 10 passes through the slot 8 and is connected to the movable ring 6. The slot 8 provides guidance and movement space for the movement of the connecting plate 10, so that when the inner circular block 9 moves axially along the rotating shaft 4 under the drive of the lead screw 11, the connecting plate 10 can drive the movable ring 6 to move synchronously, while restricting the movable ring 6 from rotating with the rotating shaft 4, ensuring that the movable ring 6 only performs axial spacing adjustment.

[0043] The inner circular block 9 is located inside the rotating shaft 4, corresponding to the position of the movable ring 6. A connecting plate 10 is integrally formed at the position corresponding to the slot 8, and is threadedly connected to both ends of the lead screw 11. The inner circular block 9 is the intermediate component connecting the lead screw 11 and the movable ring 6. When the lead screw 11 rotates, due to the transmission action of the thread, the inner circular block 9 moves axially along the lead screw 11, thereby driving the movable ring 6 to move via the connecting plate 10, thus adjusting the spacing of the movable ring 6.

[0044] Connecting plate 10: integrally formed at the position of the inner circular block 9 corresponding to the strip groove 8, one end is connected to the inner circular block 9, and the other end passes through the strip groove 8 and is connected to the movable ring 6. The connecting plate 10 plays the role of transmitting power and connecting, converting the axial movement of the inner circular block 9 into the synchronous axial movement of the movable ring 6, and is the key connecting component for realizing the linkage between the internal structure and the external movable ring 6.

[0045] Lead screw 11: A core component of the lead screw structure, located inside the rotating shaft 4, with one end extending to the outside of the rotating shaft 4 and equipped with a limit component at the extended end. Both ends of the lead screw 11 have external threads with different thread directions, and each end is threadedly connected to two internal circular blocks 9. Its main function is to drive the two internal circular blocks 9 to move in a mirror image through rotation. Because the threads at both ends are in opposite directions, when the lead screw 11 rotates, the two internal circular blocks 9 move simultaneously towards or away from each other, thereby driving the movable ring 6 to adjust its spacing. It is the core of the power transmission for realizing the mirror image movement of the movable ring 6.

[0046] Groove 12: A circular block with a rectangular cross-section is formed on the outer end of the lead screw 11 located on the rotating shaft 4. A tension spring 13 is fixedly installed inside the groove 12, and it is used to accommodate the protrusion 16. The groove 12 provides installation and movement space for the tension spring 13 and the protrusion 16. At the same time, the rectangular cross-section design can restrict the rotation of the protrusion 16 within the groove 12, so that when the annular cap 15 rotates, it can drive the lead screw 11 to rotate synchronously through the protrusion 16, ensuring effective power transmission.

[0047] Tension spring 13: Fixedly installed inside the groove 12, one end is connected to the inner wall of the groove 12, and the other end is fixedly connected to the protrusion 16. Tension spring 13 has an elastic reset function. Under normal conditions, it will generate a pulling force on the protrusion 16 towards the lead screw 11, thereby driving the annular cap 15 to pull back, so that the pin 17 is always inserted into the corresponding insertion slot 14, thereby limiting the lead screw 11. When it is necessary to rotate the lead screw 11, the annular cap 15 is pulled outward, the tension spring 13 is stretched, and the limit is released. After the rotation is completed, the elastic force of the tension spring 13 will drive the annular cap 15 to reset, and the limit is restored.

[0048] Insertion slots 14: Equidistantly spaced at one end of the rotating shaft 4 corresponding to the position of the limiting component, multiple sets of insertion slots 14 are distributed around the lead screw 11. Their main function is to cooperate with the pins 17 in the limiting component to limit the lead screw 11. When the pins 17 are inserted into the corresponding insertion slots 14, the lead screw 11 cannot rotate, thus fixing the spacing of the movable rings 6; when the pins 17 are disengaged from the insertion slots 14, the lead screw 11 can rotate freely to adjust the spacing of the movable rings 6.

[0049] The annular cap 15 is an important component of the limiting assembly, located on the outer side of the circular block at the end where the lead screw 11 extends to the outside of the rotating shaft 4. A protrusion 16 is fixedly installed on its inner side, and a pin 17 is fixedly installed at the corresponding position of the insertion slot 14. The annular cap 15 can both drive the lead screw 11 to rotate during pulling and rotation, thus adjusting the spacing of the movable rings 6, and can also be reset under the action of the tension spring 13. Through the cooperation of the pin 17 and the insertion slot 14, it limits the movement of the lead screw 11, making it a key component for operating the rotation of the lead screw 11 and achieving the limiting function.

[0050] Protrusion 16: Fixedly installed on the inner side of the annular cap 15, with a rectangular cross-section, adapted to the groove 12 and located inside the groove 12, and fixedly connected to one end of the tension spring 13. On the one hand, the protrusion 16 drives the annular cap 15 to reset under the action of the tension spring 13; on the other hand, due to its rectangular structure and the cooperation with the rectangular groove 12, it can transmit rotational power. When the annular cap 15 is rotated, the protrusion 16 will drive the lead screw 11 to rotate synchronously, ensuring that the rotational action of the annular cap 15 can be effectively transmitted to the lead screw 11.

[0051] Pin 17: Fixedly installed at the position of the corresponding insertion slot 14 on the annular cap 15, one end of which can be inserted into the corresponding insertion slot 14. Pin 17 is a direct component for limiting the movement. When pin 17 is inserted into the insertion slot 14, the lead screw 11 is fixed and cannot rotate, and the spacing of the movable ring 6 remains stable. When pin 17 is disengaged from the insertion slot 14, the rotation restriction of the lead screw 11 is released, and the spacing can be adjusted. Through the insertion and removal of pin 17 and insertion slot 14, the rotation state of the lead screw 11 can be controlled.

[0052] The structure is as follows: It includes a base plate 1, with vertical plates 2 installed at both ends of the top of the base plate 1. A rotating shaft 4 is rotatably arranged between the two vertical plates 2. A motor 3 is fixedly installed on one of the vertical plates 2. The rotating shaft of the motor 3 is connected to the rotating shaft 4. A central annular protrusion 5 is integrally formed in the middle area of ​​the rotating shaft 4. A lead screw structure is set inside the rotating shaft 4. Two sets of movable rings 6 that can move in mirror image are set on the outside of the rotating shaft 4. The lead screw structure is used to drive the two movable rings 6 to move. Annular protrusions 7 are integrally formed at the opposite ends of the two movable rings 6. When it is necessary to guide the double-sided gravure coating of lithium battery, it is guided through the surface of the central annular protrusion 5. Then, according to the width of the guided double-sided gravure coating of lithium battery, the distance between the two movable rings 6 is adjusted so that the side of the annular protrusion 7 fits against the side of the double-sided gravure coating of lithium battery, thereby guiding and correcting the double-sided gravure coating of lithium battery.

[0053] Furthermore, a strip groove 8 is provided on the rotating shaft 4, and an inner circular block 9 is provided inside the rotating shaft 4 at the position corresponding to the movable ring 6. A connecting plate 10 is integrally formed at the position of the inner circular block 9 corresponding to the strip groove 8. The connecting plate 10 is connected to the movable ring 6, and the screw structure is connected to the inner circular block 9.

[0054] Furthermore, the lead screw structure includes a lead screw 11 and a limiting component. The limiting component is located at the end of the lead screw 11 away from the motor 3. The two ends of the lead screw 11 are respectively provided with external threads in different directions. The two ends of the lead screw 11 are respectively threadedly connected to two internal circular blocks 9. When it is necessary to adjust the distance between the two movable rings 6, the limitation of the limiting component is released, and then the lead screw 11 is rotated. Due to the different thread directions, the two internal circular blocks 9 will move in a mirror image, thereby driving the two movable rings 6 to move in a mirror image.

[0055] Furthermore, one end of the lead screw 11 extends to the outside of the rotating shaft 4, and a limiting component is provided at the end of the lead screw 11 that extends to the outside of the rotating shaft 4.

[0056] Furthermore, multiple sets of insertion slots 14 are equidistantly provided at one end of the rotating shaft 4 corresponding to the position of the limiting component. The multiple sets of insertion slots 14 are arranged around the lead screw 11, and the insertion end of the limiting component is inserted into the corresponding insertion slot 14.

[0057] Furthermore, the limiting assembly includes an annular cap 15, a protrusion 16, a tension spring 13, and a pin 17. A circular block is fixedly installed at one end of the lead screw 11 located outside the rotating shaft 4. A groove 12 is provided on the circular block. A tension spring 13 is fixedly installed inside the groove 12. A protrusion 16 is fixedly installed at one end of the tension spring 13. The protrusion 16 is fixedly installed inside the annular cap 15, and the annular cap 15 is located outside the circular block. A pin 17 is fixedly installed at the position of the annular cap 15 corresponding to the insertion groove 14. The pin 17 is inserted into the insertion groove 14 at the corresponding position.

[0058] Furthermore, the cross-sections of both the groove 12 and the protrusion 16 are rectangular.

[0059] Furthermore, when the annular cap 15 is pulled back normally, the protrusion 16 will be pulled toward the screw 11, thus keeping the pin 17 always engaged with the corresponding slot 14. When it is necessary to rotate the screw 11, the annular cap 15 is pulled outward, at which time the tension spring 13 is stretched, and the pin 17 is no longer engaged with the slot 14. Then the annular cap 15 is rotated, which drives the screw 11 to rotate.

[0060] Working principle: When it is necessary to guide the double-sided gravure coating of lithium battery, it is guided through the surface of the middle annular protrusion 5. Then, according to the width of the guided double-sided gravure coating of lithium battery, the distance between the two movable rings 6 is adjusted so that the side of the annular protrusion 7 fits into the side of the double-sided gravure coating of lithium battery, thereby guiding and correcting the double-sided gravure coating of lithium battery.

[0061] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A coating machine correction mechanism, comprising a base plate (1), characterized in that, Vertical plates (2) are installed at both ends of the top of the base plate (1). A rotating shaft (4) is rotatably arranged between the two vertical plates (2). A motor (3) is fixedly installed on one of the vertical plates (2). The rotating shaft of the motor (3) is connected to the rotating shaft (4). A central annular protrusion (5) is integrally formed in the middle area of ​​the rotating shaft (4). A lead screw structure is provided inside the rotating shaft (4). Two sets of movable rings (6) that can move in mirror image are provided on the outside of the rotating shaft (4). The lead screw structure is used to drive the two movable rings (6) to move. An annular protrusion (7) is integrally formed at the opposite ends of the two movable rings (6).

2. The coating machine correction mechanism according to claim 1, characterized in that: The rotating shaft (4) has a strip groove (8), and an inner circular block (9) is provided inside the rotating shaft (4) at the position corresponding to the movable ring (6). A connecting plate (10) is integrally formed on the inner circular block (9) at the position corresponding to the strip groove (8). The connecting plate (10) is connected to the movable ring (6), and the lead screw structure is connected to the inner circular block (9).

3. The coating machine correction mechanism according to claim 2, characterized in that: The lead screw structure includes a lead screw (11) and a limiting component. The limiting component is located at the end of the lead screw (11) away from the motor (3). The two ends of the lead screw (11) are respectively provided with external threads in different directions. The two ends of the lead screw (11) are respectively threaded to two internal circular blocks (9).

4. The coating machine correction mechanism according to claim 3, characterized in that: One end of the lead screw (11) extends to the outside of the rotating shaft (4), and a limiting component is provided at the end of the lead screw (11) that extends to the outside of the rotating shaft (4).

5. The coating machine correction mechanism according to claim 4, characterized in that: One end of the rotating shaft (4) is provided with multiple sets of insertion slots (14) at equal intervals at the position of the limiting component. The multiple sets of insertion slots (14) are arranged around the lead screw (11). The insertion end of the limiting component is inserted into the corresponding insertion slot (14).

6. The coating machine correction mechanism according to claim 5, characterized in that: The limiting assembly includes an annular cap (15), a protrusion (16), a tension spring (13), and a pin (17). A circular block is fixedly installed at one end of the lead screw (11) located outside the rotating shaft (4). A groove (12) is provided on the circular block. A tension spring (13) is fixedly installed inside the groove (12). A protrusion (16) is fixedly installed at one end of the tension spring (13). The protrusion (16) is fixedly installed inside the annular cap (15), and the annular cap (15) is located outside the circular block. A pin (17) is fixedly installed at the position of the annular cap (15) corresponding to the insertion groove (14). The pin (17) is inserted into the insertion groove (14) at the corresponding position.

7. The coating machine correction mechanism according to claim 6, characterized in that: The cross-sections of both the groove (12) and the protrusion (16) are rectangular.

8. The coating machine correction mechanism according to claim 6, characterized in that: When the ring cap (15) is pulled back normally, it will pull the protrusion (16) toward the lead screw (11), thus keeping the pin (17) always engaged with the corresponding slot (14).

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