Tension adjusting mechanism and coating machine

Abstract

The utility model relates to the technical field of coating machines, and discloses a tension adjusting mechanism and a coating machine, the tension adjusting mechanism comprises a driver, an adjusting assembly and an arc roller, the driver is in driving connection with the adjusting assembly, and the adjusting assembly is connected with the arc roller; the adjusting assembly comprises a first transmission part, a second transmission part and an adjusting part, the adjusting part is arranged between the first transmission part and the second transmission part and movably connected with the first transmission part and the second transmission part, and the second transmission part is connected with the arc roller; the driver is used for enabling a first moving distance to exist between the adjusting component and the first transmission component and a second moving distance to exist between the adjusting component and the second transmission component, and the first moving distance is smaller than the second moving distance. According to the utility model, the adjusting assembly is designed, so that the large stroke required by the arc roller driven by the small stroke of the movement of the driver is realized. And as the stroke of the driver is reduced, the thrust of the driver is also reduced, the base material is prevented from being torn, and the tension adjusting quality is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating machines, and in particular relates to a tension regulating mechanism and a coating machine. Background Art

[0002] Coating machines are mainly used for surface coating production of electrodes, films, paper, etc. This machine coats the rolled substrate with a layer of glue, paint or ink with specific functions, and then rewinds it after drying.

[0003] In the existing coating machines, a swing roller or slide rail tension adjustment mechanism is used to prevent deformation and wrinkles caused by excessive or insufficient tension. However, in the swing arm tension adjustment mechanism, the gravity component changes nonlinearly with the swing amplitude, and the tension change cannot be accurately controlled, and the adjustment accuracy is not high. In the slide rail tension adjustment mechanism, the motor has a magnetic pole problem, and there is a switch between different magnetic poles inside the motor. When the rotor switches from the N pole to the S pole, the actual output torque will change, affecting the size of the tension.

[0004] Therefore, horizontal adjustment is introduced on the market to eliminate the influence of gravity or magnetic poles on tension. However, the power source of the horizontal adjustment method is generally a linear drive. When the moving stroke is large, the thrust generated by the linear drive will be large. Once the thrust is too large, the substrate is at risk of being torn, affecting normal production. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a tension adjustment mechanism. Through the design of the adjustment component, the first transmission component, the second transmission component and the adjustment component cooperate to amplify the travel of the driver, that is, the driver is driven so that there is a first moving distance between the first transmission component and the adjustment component, and a second moving distance between the adjustment component and the second transmission component, the first moving distance is smaller than the second moving distance, and the second transmission component is connected to the arc roller, so that a small travel of the driver is achieved, which can drive the large travel required by the arc roller. As the driver travel becomes smaller, its thrust is also reduced, which can avoid the risk of the substrate being torn and ensure the quality of tension adjustment. The utility model also provides a coating machine, which adopts a tension adjustment mechanism. The horizontal adjustment can eliminate the influence of gravity or electromagnetic on the tension, meet the large travel adjustment and reduce the thrust of the driver, so that the pole piece tape running effect is more consistent and the coating effect is better.

[0006] The technical effects to be achieved by the utility model are achieved through the following aspects:

[0007] In a first aspect, the utility model provides a tension adjustment mechanism, comprising a driver, an adjustment component and an arc roller, wherein the driver is drivingly connected to the adjustment component, and the adjustment component is connected to the arc roller;

[0008] The adjusting component comprises a first transmission component, a second transmission component and an adjusting component, wherein the adjusting component is disposed between the first transmission component and the second transmission component and is movably connected to the first transmission component and the second transmission component respectively, and the second transmission component is connected to the arc roller;

[0009] The driver is used to enable a first moving distance to exist between the adjusting component and the first transmission component, and a second moving distance to exist between the adjusting component and the second transmission component, and the first moving distance is smaller than the second moving distance.

[0010] In some implementations, the adjusting component includes a bearing mounting seat, a transmission shaft, a first gear, and a second gear, the driver is connected to the bearing mounting seat, the transmission shaft is rotatably mounted on the bearing mounting seat through a bearing, the first gear and the second gear are respectively sleeved on the transmission shaft, the first gear is meshedly connected to the first transmission component, and the second gear is meshedly connected to the second transmission component;

[0011] Wherein, the diameter of the first gear is smaller than the diameter of the second gear. Preferably, the gear material is a non-metallic material, which can meet the requirements of the lithium battery industry to avoid the generation of metal foreign matter due to the friction of metal parts.

[0012] In some implementations, the first transmission component includes a first spur rack, and the first gear is meshingly connected to the first spur rack.

[0013] In some implementations, the first transmission component further includes two limit blocks, which are respectively disposed at two ends of the first spur rack, and the two limit blocks are respectively movably abutted against the first gear.

[0014] In some implementations, two first gears are symmetrically arranged around the second gear, and two first transmission components are arranged corresponding to the first gears.

[0015] In some implementations, the second transmission component includes a second spur rack, a moving block, a slider, and a guide rail, the second spur rack is meshingly connected to the second gear, one end of the moving block is connected to the second spur rack, the other end of the moving block is connected to the arc roller, the guide rail is arranged adjacent to the second spur rack, the slider is slidably arranged on the guide rail, and is connected to the moving block.

[0016] In some implementations, the tension adjustment mechanism further includes an oil pressure buffer, and the oil pressure buffer is disposed on one side of the arc roller.

[0017] In some implementations, tension sensors are provided at both ends of the arc roller.

[0018] In some implementations, the driver is drivingly connected to the first transmission component, and the first transmission component and the second transmission component are respectively meshingly connected to the adjusting component, so that the kinetic energy of the first transmission component is transmitted to the adjusting component, and the kinetic energy of the adjusting component is transmitted to the second transmission component.

[0019] In a second aspect, the utility model provides a coating machine, comprising the above-mentioned tension adjustment mechanism.

[0020] In summary, the utility model has at least the following benefits:

[0021] 1. The tension adjustment mechanism provided by the utility model, through the design of the adjustment component, adopts the first transmission component, the second transmission component and the adjustment component to cooperate to amplify the travel of the driver, thereby realizing the small travel of the driver and driving the large travel required by the arc roller.

[0022] 2. The tension adjustment mechanism provided by the utility model has a smaller driving stroke, and its thrust is also reduced accordingly, thereby avoiding the risk of the substrate being torn and ensuring the quality of tension adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the tension adjustment mechanism in Example 1.

[0024] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0025] Figure 3 This is a schematic diagram of the top structure of the tension adjustment mechanism in Example 1.

[0026] Figure 4 for Figure 3 BB-plane cross-sectional diagram of the tension adjustment mechanism.

[0027] Figure 5 This is a schematic cross-sectional view of the adjustment component taken along the BB plane in Example 1.

[0028] Figure 6 This is a schematic diagram of the structure of the first transmission component in Example 1.

[0029] Figure 7 This is a schematic diagram of the vertical cross-section structure of the tension adjustment mechanism in Example 1.

[0030] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part C in the middle.

[0031] Fig. 9 for Figure 1 Schematic diagram of the enlarged structure of part D in the middle.

[0032] Markings in the figure:

[0033] 1. Driver; 2. Adjustment assembly, 21. First transmission component, 211. First spur rack, 212. Limit block, 22. Second transmission component, 221. Second spur rack, 222. Moving block, 223. Slider, 224. Guide rail, 23. Adjustment component, 231. Bearing mounting seat, 2311. Bearing inner ring baffle, 232. Transmission shaft, 233. First gear, 234. Second gear; 3. Arc roller; 4. Hydraulic buffer. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1:

[0037] Please see attached Figure 1-3 The utility model provides a tension adjustment mechanism, including a driver 1, an adjustment component 2 and an arc roller 3, wherein the driver 1 is drivingly connected to the adjustment component 2, and the adjustment component 2 is connected to the arc roller 3; the adjustment component 2 includes a first transmission component 21, a second transmission component 22 and an adjustment component 23, the adjustment component 23 is arranged between the first transmission component 21 and the second transmission component 22, and is movably connected to the first transmission component 21 and the second transmission component 22 respectively, and the second transmission component 22 is connected to the arc roller 3; wherein the driver 1 is used to make a first moving distance exist between the adjustment component 23 and the first transmission component 21, and a second moving distance exist between the adjustment component 23 and the second transmission component 22, and the first moving distance is smaller than the second moving distance.

[0038] It can be understood that the driver 1 is used as a power to push the adjustment component 2; preferably, the driver 1 can use a low-friction cylinder, and the cylinder adjusts the tension swing arm force in real time according to the electrical proportional valve to ensure that the tension system output is more constant. The adjustment component 2 is used to make up for the insufficient stroke of the driver 1. The arc roller 3 is used to adjust the conveying angle of the substrate. The moving substrate adjusts the conveying angle after passing through the arc roller 3. The arc roller 3 is driven to rotate by the moving substrate. According to the movement of the substrate, the front and rear positions of the arc roller are adjusted in time to adjust the tension. The first moving distance is the straight-line distance between the adjustment component 23 and the first transmission component 21 after the movement. The second moving distance is the straight-line distance between the adjustment component 23 and the second transmission component 22 after the movement.

[0039] The operating principle of the tension adjustment mechanism in this embodiment is as follows: the driver 1 acts as a power to drive the adjustment component 23 and the first transmission component 21 to move horizontally, and the relative movement of the two generates a first moving distance; the adjustment component 23 and the second transmission component 22 to move horizontally, and the relative movement of the two generates a second moving distance; and combined with the first moving distance being smaller than the second moving distance, and the second transmission component 22 being connected to the arc roller 3, the stroke pushed by the driver 1 is the same as the first moving distance, and the second moving distance is the same as the stroke required for the arc roller 3 to move, thereby realizing a small stroke of the driver 1 to drive the large stroke required for the arc roller 3. As the stroke of the driver 1 becomes smaller, its thrust is also reduced, which can avoid the risk of the substrate being torn and ensure the quality of tension adjustment.

[0040] Please see attached Figure 4 The adjusting component 23 includes a bearing mounting seat 231, a transmission shaft 232, a first gear 233 and a second gear 234. The driver 1 is connected to the bearing mounting seat 231. The transmission shaft 232 is rotatably mounted on the bearing mounting seat 231 through a bearing. The first gear 233 and the second gear 234 are respectively sleeved on the transmission shaft 232. The first gear 233 is meshed and connected with the first transmission component 21, and the second gear 234 is meshed and connected with the second transmission component 22; wherein the diameter of the first gear 233 is smaller than the diameter of the second gear 234. Preferably, the gear material is a non-metallic material, which can meet the requirements of the lithium battery industry to avoid the generation of metal foreign matter due to the friction of metal parts.

[0041] Specifically, by setting the diameter of the first gear 233 to be smaller than the diameter of the second gear 234, that is, the driver pushes the bearing mounting seat 231 to translate a corresponding distance, so that the first gear 233 with a small diameter is meshed and moved with the first spur rack 211, thereby driving the transmission shaft 232 to rotate a certain number of circles, and then the transmission shaft 232 drives the second gear 234 to mesh and move with the second spur rack 221. Since the diameter of the second gear 234 is large, when the transmission shaft 232 is in the same number of rotations, that is, the arc length of the second gear 234 with a large diameter is larger than the arc length of the first gear 233 with a small diameter, the distance that the second gear 234 with a large diameter meshes and moves with the second spur rack 221 is larger than the distance that the first gear 233 with a small diameter meshes and moves with the first spur rack 211, thereby achieving that the driver 1 can complete the large stroke required by the arc roller 3 by pushing a small stroke, that is, forming an amplification multiple.

[0042] In addition, please see the attached Figure 5 The bearing mounting seat 231 is provided with a bearing inner ring baffle 2311 corresponding to the transmission shaft 232. With this arrangement, when the first gear 233 is meshed and moved with the first spur rack 211, the transmission shaft 232 is driven to rotate, and the bearing inner ring baffle can limit the transmission shaft 232, thereby preventing the bearing from moving and causing damage.

[0043] Please see attached Figure 6 The first transmission component 21 includes a first straight rack 211, and the first gear 233 is meshed with the first straight rack 211. The first transmission component 21 also includes two limit blocks 212, which are respectively arranged at the two ends of the first straight rack 211, and the two limit blocks 212 are respectively movably abutted with the first gear 233. Through the above arrangement, when the first gear 233 is meshed and moved on the first straight rack 211, the limit blocks 212 at both ends can limit the movement range of the first gear 233, thereby avoiding excessive movement of the first gear 233 and causing separation from the first straight rack 211, thereby ensuring stable and smooth operation of the first gear 233.

[0044] Please see attached Figure 7-8 The second transmission component 22 includes a second spur rack 221, a moving block 222, a slider 223 and a guide rail 224. The second spur rack 221 is meshed and connected with the second gear 234. One end of the moving block 222 is connected with the second spur rack 221, and the other end of the moving block 222 is connected with the arc roller 3. The guide rail 223 is arranged adjacent to the second spur rack 221. The slider 223 is slidably arranged on the guide rail 224 and connected with the moving block 222. By setting the moving block 222, the kinetic energy of the second spur rack 221 can be effectively transferred to the arc roller 3 to ensure the tension adjustment action of the arc roller 3. And by setting the cooperation between the slider 223 and the guide rail 224, the stability of the moving block 222 driving the arc roller 3 to move can be effectively ensured.

[0045] Preferably, two first gears 233 are symmetrically arranged around the second gear 234, and two first transmission components 21 are arranged corresponding to the first gears 233. With this arrangement, the first gears 233 are meshed and moved with the first spur rack 211 at both ends of the transmission shaft, effectively improving the balance stability of the transmission shaft 232 rotation.

[0046] Through the above arrangement, the operation process of the adjustment component 23 and the first transmission component 21 and the second transmission component 22 is as follows: the driver 1 pushes the bearing mounting seat 231 to move horizontally, and then drives the first gear 233 to mesh and rotate on the first spur rack 211, and then drives the transmission shaft 232 to rotate, and then the transmission shaft 232 drives the second gear 234 to rotate at the same time, and the second gear 234 meshes and rotates on the second spur rack 221, so that the second spur rack 221 drives the arc roller 3 to move through the slider 223 and the guide rail 224. Since the first gear 233 and the second gear 234 are coaxial, and the diameter of the first gear 233 is smaller than the diameter of the second gear 234, the ratio of the arc length of the second gear 234 to the arc length of the first gear 233 forms a magnification. The small stroke of the driver 1 is realized, and the large stroke required by the arc roller 3 can be driven. The risk of the substrate being torn can be avoided, and the quality of the tension adjustment can be guaranteed. In addition, the overall design of the structure is relatively simple, the operating principle is highly practical, and the overall structure has a small operating range and a compact and simple structure.

[0047] Please see attached Figure 8 The tension adjustment mechanism also includes an oil pressure buffer 4, which is arranged on one side of the arc roller 3. Preferably, two oil pressure buffers 4 are provided, which are arranged on the left and right sides of the arc roller 3 respectively. Specifically, the oil pressure buffer 4 is used to limit the adjustment of the arc roller 3, control the adjustable path of the arc roller 3 within a suitable range, and improve the safety of the adjustment movement of the arc roller 3; and can also eliminate the mechanical impact caused by the excessive movement of the arc roller 3, effectively reduce noise, play a certain role in protecting the arc roller 3, and can correspondingly extend the service life of the arc roller 3.

[0048] In some embodiments, tension sensors are provided at both ends of the arc roller 3. Through this setting, an electrical program is used to compare the tension at both ends, and the feedback driver 1 is adjusted to make the tension at both ends of the float equal, effectively avoiding wrinkles.

[0049] Embodiment 2:

[0050] The difference between this embodiment and the first embodiment is that the object driven by the driver 1 is different. The driver 1 of this embodiment is drivingly connected to the first transmission component 21, and the first transmission component 21 and the second transmission component are respectively meshed and connected with the adjustment component 23, so that the kinetic energy of the first transmission component 21 is transmitted to the adjustment component 23, and the kinetic energy of the adjustment component 23 is transmitted to the second transmission component 22.

[0051] Specifically, the adjusting component includes a transmission shaft, a first gear and a second gear, the transmission shaft is connected between the first gear and the second gear; the first gear is meshed with the first transmission component, and the second gear is meshed with the second transmission component; wherein the diameter of the first gear is smaller than the diameter of the second gear.

[0052] The first transmission component 21 includes a first straight rack and a limit block, wherein the limit block is connected to both ends of the first straight rack; the first gear is meshed and connected with the first straight rack; and the first straight rack is drivingly connected with the driver.

[0053] The second transmission component 22 includes a second spur rack, a moving block, a slider and a guide rail. One end of the moving block is connected to the second spur rack, and the other end of the moving block is connected to the arc roller. The slider is arranged at the lower end of the moving block and is slidably connected to the guide rail. The second spur rack is meshingly connected to the second gear.

[0054] The tension adjustment mechanism in this embodiment operates on the following principle: the driver 1 acts as a power source to drive the first spur rack to move horizontally. Since the first gear and the first spur rack are meshed and moved, the transmission shaft is driven to rotate, and at the same time, the transmission shaft drives the second gear and the second spur rack to mesh and move. According to the coaxial relationship between the first gear and the second gear, and the diameter of the first gear is smaller than the diameter of the second gear, the ratio of the arc length of the second gear to the arc length of the first gear forms a magnification. The small stroke of the driver movement is realized, which can drive the large stroke required by the arc roller. The risk of substrate tearing can be avoided, and the quality of tension adjustment can be guaranteed.

[0055] Embodiment 3:

[0056] Based on the above embodiment, this embodiment provides a coating machine, including the above tension adjustment mechanism.

[0057] The coating machine in this embodiment adopts a tension adjustment mechanism. The horizontal adjustment can eliminate the influence of gravity or electromagnetism on the tension, meet the large stroke adjustment and reduce the thrust of the driver, so that the pole piece tape walking effect is more consistent and the coating effect is better.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0060] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0061] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0062] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A tension adjustment mechanism, characterized in that: It includes a driver, an adjustment component and an arc roller, wherein the driver is drivingly connected to the adjustment component, and the adjustment component is connected to the arc roller; The adjusting component comprises a first transmission component, a second transmission component and an adjusting component, wherein the adjusting component is disposed between the first transmission component and the second transmission component and is movably connected to the first transmission component and the second transmission component respectively, and the second transmission component is connected to the arc roller; The driver is used to enable a first moving distance to exist between the adjusting component and the first transmission component, and a second moving distance to exist between the adjusting component and the second transmission component, and the first moving distance is smaller than the second moving distance.

2. The tension adjustment mechanism according to claim 1, characterized in that: The adjusting component includes a bearing mounting seat, a transmission shaft, a first gear and a second gear, the driver is connected to the bearing mounting seat, the transmission shaft is rotatably mounted on the bearing mounting seat through a bearing, the first gear and the second gear are respectively sleeved on the transmission shaft, the first gear is meshed and connected with the first transmission component, and the second gear is meshed and connected with the second transmission component; Wherein, the diameter of the first gear is smaller than the diameter of the second gear.

3. The tension adjustment mechanism according to claim 2, characterized in that: The first transmission component includes a first spur rack, and the first gear is meshingly connected with the first spur rack.

4. The tension adjustment mechanism according to claim 3, characterized in that: The first transmission component further includes two limit blocks, which are respectively arranged at two ends of the first spur rack, and the two limit blocks are respectively movably abutted against the first gear.

5. The tension adjustment mechanism according to claim 2, characterized in that: Two first gears are symmetrically arranged around the second gear, and two first transmission components are arranged corresponding to the first gears.

6. The tension adjustment mechanism according to claim 2, characterized in that: The second transmission component includes a second spur rack, a moving block, a slider and a guide rail. The second spur rack is meshed and connected with the second gear. One end of the moving block is connected to the second spur rack, and the other end of the moving block is connected to the arc roller. The guide rail is arranged adjacent to the second spur rack. The slider is slidably arranged on the guide rail and connected to the moving block.

7. The tension adjustment mechanism according to claim 6, characterized in that: The tension adjustment mechanism further includes an oil pressure buffer, and the oil pressure buffer is arranged on one side of the arc roller.

8. The tension adjustment mechanism according to claim 1, characterized in that: Tension sensors are arranged at both ends of the arc roller.

9. The tension adjustment mechanism according to claim 1, characterized in that: The driver is drivingly connected to the first transmission component, and the first transmission component and the second transmission component are respectively meshed and connected with the adjusting component, so that the kinetic energy of the first transmission component is transmitted to the adjusting component, and the kinetic energy of the adjusting component is transmitted to the second transmission component.

10. A coating machine, characterized in that: It comprises a tension adjustment mechanism as described in any one of claims 1 to 9.

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