Material belt conveying device and lithium battery production equipment

Abstract

The utility model relates to a material belt conveying device and lithium battery production equipment. The material belt conveying device comprises a mounting frame, a passing roller, an adjusting air cylinder and a rotating joint. When the tension of the material belt wound around the passing roller is not uniform, the acting force applied to the passing roller by the material belt is different in the lengthwise direction of the passing roller, namely in the width direction of the material belt, and the passing roller is forced to swing relative to the mounting frame until the stress of the passing roller is balanced again, so that the tension in the width direction of the material belt is balanced. In the continuous change process of the tension, the restoring force applied to the passing roller by the adjusting air cylinder can enable the passing roller to be dynamically adjusted, so that the passing roller is kept in contact with all positions of the material belt in the width direction, and the stress of the passing roller is dynamically balanced. Therefore, the passing roller can adaptively adjust the angle according to the tension change of the material belt, so that the tension distribution of the material belt wound around the passing roller in the width direction is always kept uniform, and the material belt can be effectively prevented from wrinkling.

Description

Technical Field

[0001] This utility model relates to the field of mechanical automation technology, and in particular to a material conveyor belt device and lithium battery production equipment. Background Technology

[0002] In actual production processes, rollers are frequently used to transition and guide the material strip. For example, in the processing of lithium battery cells, electrode strips, separator strips, and other material strips need to be wound around rollers to achieve purposes such as turning and tensioning. However, due to processing and installation errors in rollers, uneven tension distribution can easily occur when the material strip is wound around the rollers, resulting in wrinkles in the material strip. Utility Model Content

[0003] Therefore, it is necessary to provide a material conveyor device and lithium battery production equipment that can effectively prevent the material conveyor belt from wrinkling, in order to address the above problems.

[0004] A material conveyor belt includes a mounting frame, a guide roller, two adjusting cylinders, and two rotating joints. The two ends of the guide roller are respectively connected to the two rotating joints, and the two adjusting cylinders are respectively connected to the two ends of the guide roller through the rotating joints.

[0005] In one embodiment, the rotary joint includes a first rotating shaft and a second rotating shaft. The first rotating shaft is connected to one end of the roller, and the second rotating shaft is connected to the piston rod of the adjusting cylinder. The cylinder body of the adjusting cylinder is fixed to the mounting bracket.

[0006] In one embodiment, the rotary joint further includes a connecting body, the first rotating shaft and the second rotating shaft are mounted on the connecting body, one end of the roller is rotatably mounted on the connecting body via the first rotating shaft, and the piston rod is rotatably mounted on the connecting body via the second rotating shaft.

[0007] In one embodiment, the rotary joint includes a third rotating shaft, the piston rod of the adjusting cylinder is connected to one end of the roller via the third rotating shaft, the conveyor belt further includes a rotating connector, the rotating connector includes a fourth rotating shaft, and the cylinder body of the adjusting cylinder is rotatably mounted on the mounting frame via the fourth rotating shaft.

[0008] In one embodiment, the roller includes a roller body and a roller shaft, the roller body being rotatably fitted onto the roller shaft, and the roller shaft being connected to the rotary joint.

[0009] In one embodiment, the system further includes a support and an adjustment mechanism, the adjustment mechanism including a rotating shaft rotatably mounted on the support, and the mounting bracket being fixedly connected to the rotating shaft.

[0010] In one embodiment, the adjusting mechanism further includes a limiting plate and a limiting pin. The limiting plate is disposed at at least one end of the rotating shaft, and the limiting plate has a plurality of circumferentially distributed positioning holes. The limiting pin is telescopically mounted on the support and points towards the limiting plate.

[0011] A conveyor belt includes a mounting frame, a guide roller, two adjusting cylinders, and two rotary joints. The guide roller is rotatable about a first rotation axis. Each adjusting cylinder includes a cylinder body and a piston rod. The cylinder body is mounted on the mounting frame. Both ends of the guide roller are connected to the two piston rods through the rotary joints. The adjusting cylinders provide tension to the guide roller. The rotary joints allow both ends of the guide roller to rotate relative to the piston rods, so that the first rotation axis can swing in a swing plane.

[0012] In one embodiment, the rotary joint includes a first rotating shaft and a second rotating shaft. The first rotating shaft is connected to one end of the roller, and the second rotating shaft is connected to the piston rod. Both the first and second rotating shafts are perpendicular to the first rotation axis, and the cylinder body is fixed to the mounting bracket; or...

[0013] The rotating joint includes a third rotating shaft, which is connected to one end of the roller. The material conveying device also includes a rotating connector, which includes a fourth rotating shaft. Both the third and fourth rotating shafts are perpendicular to the first rotation axis. The cylinder is rotatably mounted on the mounting frame via the fourth rotating shaft.

[0014] A lithium battery production equipment includes a material conveyor as described in any of the above optional embodiments.

[0015] In the aforementioned conveyor belt and lithium battery production equipment, when uneven tension occurs in the conveyor belt winding around the roller, the force exerted on the roller by the conveyor belt will differ along the longitudinal direction of the roller, i.e., the width direction of the conveyor belt. This forces the roller to oscillate relative to the mounting frame until the force on the roller reaches equilibrium again, thus balancing the tension in the width direction of the conveyor belt. During the continuous tension variation, adjusting the restoring force applied to the roller by the adjusting cylinder allows for dynamic adjustment of the roller, maintaining contact with all parts of the conveyor belt in the width direction and achieving dynamic force equilibrium. Therefore, the roller can adaptively adjust its angle according to changes in conveyor belt tension, ensuring a uniform tension distribution in the width direction of the conveyor belt after winding around the roller, effectively preventing wrinkles in the conveyor belt. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the conveyor belt device in one embodiment of the present invention;

[0018] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the shown material conveyor belt device;

[0019] Figure 3 for Figure 1 The diagram shows a simplified structural schematic of the conveyor belt device.

[0020] Figure 4 This is a simplified structural diagram of the conveyor belt device in another embodiment of the present invention;

[0021] Figure 5 for Figure 3 or Figure 4 The diagram shows the stress analysis of the rollers in the conveyor belt under various working conditions. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Please see Figure 1 This utility model provides a material conveyor belt 10. Furthermore, this utility model also provides a lithium battery production equipment (not shown), which includes the aforementioned material conveyor belt 10.

[0029] The aforementioned lithium battery production equipment can be a winding machine, a die-cutting machine, or a cutting and stacking integrated machine, etc. The material strip conveying device 10 is used to convey electrode material strips or separator material strips, etc., and can make the tension distribution of the material strip in the width direction more uniform after it passes through the material strip conveying device 10, thereby effectively avoiding wrinkles in the material strip and improving the quality of the final battery cell.

[0030] For a winding machine, it generally includes the aforementioned strip conveying device 10 and a winding needle mechanism. The electrode strip and the separator strip can be guided and transitioned by the strip conveying device 10 and then enter the winding needle mechanism together for winding. Therefore, it can effectively prevent the electrode strip and the separator strip from lifting or becoming misaligned due to wrinkles, thereby helping to improve the quality of the wound battery cell.

[0031] A typical integrated cutting and stacking machine includes the aforementioned strip conveyor 10 and a cutting device. The electrode strip is guided and transitioned by the strip conveyor 10 before entering the cutting device for slicing. The cutting device sequentially cuts the electrode strip into multiple electrodes. Because the strip conveyor 10 effectively prevents wrinkles in the electrode strip, the cutting device can reduce dimensional errors during slicing. Furthermore, the separator strip required for stacking can also be guided and transitioned by the strip conveyor 10 before entering the stacking station, ensuring a smooth surface for the separator strip and preventing wrinkling of the cells after stacking. Therefore, an integrated cutting and stacking machine equipped with the strip conveyor 10 can also improve the quality of the stacked battery cells.

[0032] Please refer to the following: Figure 2 In one embodiment of this utility model, the conveyor belt 10 includes a mounting frame 100, a roller 200, an adjusting cylinder 300, and a rotating joint 400.

[0033] The mounting bracket 100 provides support for components such as the guide roller 200 and adjusting cylinders 300. Both ends of the guide roller 200 are connected to two adjusting cylinders 300 via rotary joints 400. Each adjusting cylinder 300 includes a cylinder body 310 and a piston rod 320. The cylinder body 310 is mounted on the mounting bracket 100, and the two piston rods 320 are connected to both ends of the guide roller 200 via the rotary joints 400. The piston rods 320 can extend and retract relative to the cylinder body 310, and the adjusting cylinders 300 can apply a pulling force (i.e., a restoring force) to the guide roller 200 via the rotary joints 400.

[0034] Specifically, two adjusting cylinders 300 are spaced apart on the mounting bracket 100, with their piston rods 320 facing each other. The roller 200 is located between the two adjusting cylinders 300. For ease of description, the direction in which the two adjusting cylinders 300 are spaced apart is defined as the first direction, which refers to... Figure 1As shown in the left and right directions, in the actual application scenario of the material belt conveyor 10, the first direction is usually the horizontal direction.

[0035] The conveyor belt passing through the conveyor belt 10 can wrap around the roller 200 and drive the roller 200 to rotate. Specifically, the roller 200 can rotate around a first rotation axis. In this embodiment, the roller 200 includes a roller body 210 and a roller shaft 220. The roller shaft 220 is coaxially arranged with the first rotation axis, and the roller body 210 is rotatably sleeved on the roller shaft 220. The roller body 210 and the roller shaft 220 can be connected by a bearing so that the roller body 210 can rotate around the roller shaft 220.

[0036] Since the roller shaft 220 does not need to rotate, it can be directly connected to the rotary joint 400, thus simplifying the connection structure. The material belt passing through the roller 200 can drive the roller body 210 to rotate around the roller shaft 220. It should be noted that in other embodiments, the roller body 210 and the roller shaft 220 can also be fixedly connected, and the roller shaft 220 can be indirectly connected to the rotary joint 400 through a rotating element, such as a bearing, so that the entire roller 200 can rotate around the first rotation axis.

[0037] It should be noted that when the belt conveyor 10 is in its initial state, the first rotation axis of its roller 200 extends approximately along the first direction. The aforementioned initial state refers to the state when the belt conveyor 10 is not started and the belt has not yet wrapped around the roller 200.

[0038] The rotary joint 400 allows both ends of the roller 200 to rotate relative to the piston rod 320, thereby causing the first rotation axis of the roller 200 to swing within a swing plane. Initially, the first rotation axis of the roller 200 is parallel to the aforementioned first direction. However, during the operation of the belt conveyor 10, the roller 200 is subjected to the action of the belt, causing it to float relative to its initial state. That is, the roller 200 is not fixed relative to the mounting frame 100, but can float within a degree of freedom. Moreover, when the roller 200 deviates from its initial state, it tends to return to its initial state under the action of the adjusting cylinder 300.

[0039] Please see Figure 2 and Figure 3 In one embodiment, the rotary joint 400 includes a first rotating shaft 410 and a second rotating shaft 420. The first rotating shaft 410 is connected to one end of the roller 200, the second rotating shaft 420 is connected to the piston rod 320, and the cylinder body 310 is fixed to the mounting bracket 100.

[0040] In this embodiment, the roller 220 is rotatably connected to the rotary joint 400 via the first rotating shaft 410, and the piston rod 320 is rotatably connected to the rotary joint 400 via the second rotating shaft 420. The roller 200 and the piston rod 320 can rotate simultaneously around the first rotating shaft 410 and the second rotating shaft 420 respectively, and with the extension and retraction of the piston rod 320, the roller 200 can oscillate. Furthermore, during the oscillation of the roller 200, the piston rod 320 does not deflect with the roller 200, and the adjusting cylinder 300 can always maintain a stable position.

[0041] The first rotating shaft 410 and the second rotating shaft 420 extend in a direction substantially perpendicular to the first rotation axis. Therefore, the first rotating shaft 410 and the second rotating shaft 420 can effectively limit the swing direction of the roller 200, making the swing plane perpendicular to the first rotating shaft 410 and the second rotating shaft 420. That is, the first rotation axis is always maintained in a plane, thereby improving the stability of the roller 200 during the swing process.

[0042] Furthermore, in this embodiment, the rotary joint 400 also includes a connecting body 430, a first rotating shaft 410 and a second rotating shaft 420 mounted on the connecting body 430, one end of the roller 200 being rotatably mounted on the connecting body 430 via the first rotating shaft 410, and the piston rod 320 being rotatably mounted on the connecting body 430 via the second rotating shaft 420.

[0043] Specifically, the connecting body 430 can be composed of two spaced-apart cover plates (not shown in the figure), with the first rotating shaft 410 and the second rotating shaft 420 fixed between the two cover plates. The connecting body 430 facilitates the installation of the first rotating shaft 410 and the second rotating shaft 420. The piston rod 320 and the roller 220 can extend between the two cover plates and connect to the second rotating shaft 420 and the first rotating shaft 410 respectively, thus further restricting the degrees of freedom of the piston rod 320 and the roller 220.

[0044] It should be noted that in other embodiments, the rotary joint 330 may also adopt other structures, such as universal joints, spherical joints, etc.

[0045] In addition, please see Figure 4 In another embodiment, the rotary joint 400 includes a third rotating shaft (not shown), and the piston rod 320 is connected to one end of the roller 200 via the third rotating shaft. The material conveyor 10 also includes a rotating connector 500, which includes a fourth rotating shaft (not shown). The cylinder 310 is rotatably mounted on the mounting frame 100 via the fourth rotating shaft.

[0046] The roller 200 can rotate around the third axis, while the cylinder 310 can rotate relative to the mounting bracket 100 around the fourth axis. Combined with the extension and retraction of the piston rod 320, this allows the roller 200 to swing. The rotating connector 500 can be a universal joint, a spherical joint, or simply a pin. The difference from the previous embodiment is that the position of the adjusting cylinder 300 is not fixed but shifts as the roller 200 swings. Furthermore, the third and fourth axes extend in a direction approximately perpendicular to the first axis of rotation, thus effectively limiting the swing direction of the roller 200 and ensuring that the swing plane is perpendicular to the third and fourth axes.

[0047] Under different operating conditions, the roller 200 can achieve balance under the restoring force provided by the adjusting cylinder 300. Please refer to [link / reference]. Figure 5 The stress conditions of the roller 200 under different working conditions are as follows:

[0048] like Figure 5 As shown in (a), when the guide roller 200 is in its initial state, the material belt has not wrapped around the guide roller 200, so the resultant force on the guide roller 200 in the direction perpendicular to the first rotation axis is equal to 0; while in the direction parallel to the first rotation axis, that is, axially upward of the guide roller 200, the restoring forces provided by the left and right adjusting cylinders 300 are the same in magnitude but opposite in direction, i.e., F S1 =F S2 The resultant force is also zero. Furthermore, the direction of the restoring force is the same as the extension direction of the first axis of rotation, therefore F... S1 and F S2 The component of force in the direction perpendicular to the first axis of rotation is 0, so the roller 200 remains in balance.

[0049] like Figure 5 As shown in (b), when the conveyor belt passes over the roller 200, the roller 200 tensions the conveyor belt, and the conveyor belt exerts a force perpendicular to the first axis of rotation on the roller 200, thereby causing the roller 200 to shift relative to its initial position. The directions of the restoring forces provided by the two adjusting cylinders 300 are at angles to the first axis of rotation of the roller 200, namely θ and θ'. At this time, if the tension of the conveyor belt is uniformly distributed along the width direction (i.e., the extension direction of the first axis of rotation), the above-mentioned force is equal to the resultant force of the component of the restoring force provided by the two adjusting cylinders 300 to the roller 200 in the direction perpendicular to the first axis of rotation, i.e., sinθ.F. S1 +sinθ'.F S2 =F.

[0050] like Figure 5As shown in (c), when the tension of the conveyor belt is unevenly distributed along its width, the force exerted on the guide roller 200 by the conveyor belt will differ along the longitudinal direction of the guide roller 200, i.e., the width direction of the conveyor belt. At this time, the force balance of the guide roller 200 is broken, thereby forcing the guide roller 200 to oscillate relative to the mounting frame 100 until it switches to... Figure 5 In the state shown in (d), the force on the guide roller 200 is balanced again. After the force on the guide roller 200 is balanced again, it means that the force applied by the material belt to the guide roller 200 is consistent in the width direction of the material belt, so the tension distribution of the material belt will also become uniform in the width direction.

[0051] As the tension of the conveyor belt continuously changes, the restoring force applied to the guide roller 200 enables the guide roller 200 to dynamically adjust, thereby maintaining contact with all parts of the conveyor belt in the width direction and achieving dynamic equilibrium of the force on the guide roller 200. In other words, the guide roller 200 can adaptively adjust the angle of the first rotation axis according to the tension change of the conveyor belt, so that the tension distribution of the conveyor belt in the width direction after passing through the guide roller 200 remains uniform, thus effectively preventing wrinkles in the conveyor belt.

[0052] Based on the above force analysis, when the tension of the conveyor belt is 0, both θ and θ' are equal to 0°. However, when the tension is greater than 0, the force acting on the roller 200 must be greater than 0, therefore θ and θ' must not be equal to 0°. In other words, as long as the roller 200 is subjected to a force from the conveyor belt, it can oscillate, which is related to the restoring force F. S1 and F S2 The specific size is irrelevant. Therefore, there is no requirement for the magnitude of the pulling force that the adjusting cylinder 300 can provide, so the preload of the adjusting cylinder 300 can be adjusted to a smaller value, thereby improving the response speed of the roller 200's oscillation.

[0053] In related technologies, to address the problem of uneven tension distribution along the width of the strip, elastic preload components, such as cylinders or compression springs, are typically installed at both ends of the swing roller. These elastic preload components apply an elastic thrust to the swing roller in a direction approximately perpendicular to its axis, enabling the roller to float up and down. This allows the angle of the swing roller to adaptively adjust according to tension changes when the strip tension fluctuates.

[0054] To prevent the elastic preload from being overcompressed and losing its elasticity, a preload with a large elastic force, i.e., a large elastic modulus, is usually required. However, the tension fluctuation of the conveyor belt is generally small, so it may not be enough to overcome the elastic force of the preload, resulting in the swing roller not being able to float in time and thus failing to provide real-time adjustment of the conveyor belt tension. This application addresses this issue by setting an adjusting cylinder 300 and optimizing the force on the guide roller 200, ensuring that the guide roller 200 can float smoothly regardless of the magnitude of the tension provided by the adjusting cylinder 300, without needing to consider the magnitude of the preload force of the adjusting cylinder 300. This is precisely to overcome the shortcomings of the aforementioned related technologies.

[0055] In addition, please refer to again Figure 1 In this embodiment, the material conveying device 10 further includes a support 600 and an adjustment mechanism 700. The adjustment mechanism 700 includes a rotating shaft 710 rotatably mounted on the support 600, and a mounting bracket 100 is fixedly connected to the rotating shaft 710.

[0056] Specifically, the rotating shaft 710 can rotate around the second rotation axis. When the conveyor belt 10 is in its initial state, the second rotation axis is parallel to the first rotation axis. When the adjusting mechanism 700 drives the mounting frame 100 to rotate via the rotating shaft 710, it can drive the roller 200 and the adjusting cylinder 300 to rotate as a whole around the second rotation axis, thereby changing the angle of the aforementioned swing plane. In actual use, by precisely controlling the rotation angle of the rotating shaft 710, the aforementioned swing plane can be adjusted to be parallel to the horizontal plane. Thus, the roller 200 will float within the horizontal plane during operation, thereby essentially negligible the influence of the component's gravity.

[0057] Furthermore, in this embodiment, the adjustment mechanism 700 also includes a limiting plate 720 and a limiting pin 730. The limiting plate 720 is disposed at at least one end of the rotating shaft 710, and the limiting plate 720 has a plurality of positioning holes distributed circumferentially (not shown). The limiting pin 730 is telescopically mounted on the support 600 and points towards the limiting plate 720.

[0058] By manipulating the extension and retraction of the limit pin 730, it can be inserted into or removed from the corresponding positioning hole, thereby locking or unlocking the limit plate 720 to the support 600. Specifically, the rotating shaft 710 can be mounted on the support 600 via bearings. The rotating shaft 710 can be manually operated to rotate around its own axis (the second rotation axis), thereby driving the mounting bracket 100 to rotate. As the rotating shaft 710 drives the limit plate 720 to rotate, the limit pin 730 can be inserted into any positioning hole to fix the limit plate 720 to the support 600. When it is necessary to adjust the angle of the swing plane, first pull the limit pin 730 out of the current positioning hole, and after the rotating shaft 710 has rotated to the required angle, insert the limit pin 730 into the corresponding positioning hole.

[0059] More specifically, the adjustment mechanism 700 generally also includes a potentiometer 740, which is mounted on the rotating shaft 710. The potentiometer 740 can record the angle of deflection of the rotating shaft 710 relative to its initial position, thereby facilitating precise control of the rotation angle of the rotating shaft 710.

[0060] In the aforementioned conveyor belt 10 and lithium battery production equipment, when the tension of the conveyor belt around the roller 200 becomes uneven, the force exerted on the roller 200 by the conveyor belt will differ along the longitudinal direction of the roller 200, i.e., the width direction of the conveyor belt. This forces the roller 200 to oscillate relative to the mounting frame 100 until the force on the roller 200 reaches equilibrium again, thus balancing the tension in the width direction of the conveyor belt. During the continuous change of tension, the restoring force applied to the roller 200 by the adjusting cylinder 300 enables the roller 200 to dynamically adjust, thereby maintaining contact with all parts of the conveyor belt in the width direction and achieving dynamic equilibrium of the force on the roller 200. It is evident that the roller 200 can adaptively adjust its angle according to the tension changes of the conveyor belt, ensuring that the tension distribution of the conveyor belt around the roller 200 remains uniform in the width direction, thus effectively preventing wrinkles in the conveyor belt.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A material belt conveyor device, characterized in that, It includes a mounting frame, a roller, two adjusting cylinders, and two rotating joints. The two ends of the roller are respectively connected to the two rotating joints, and the two adjusting cylinders are respectively connected to the two ends of the roller through the rotating joints.

2. The material conveyor belt device according to claim 1, characterized in that, The rotary joint includes a first rotating shaft and a second rotating shaft. The first rotating shaft is connected to one end of the roller, and the second rotating shaft is connected to the piston rod of the adjusting cylinder. The cylinder body of the adjusting cylinder is fixed to the mounting bracket.

3. The material conveyor according to claim 2, characterized in that, The rotary joint further includes a connecting body, the first rotating shaft and the second rotating shaft are mounted on the connecting body, one end of the roller is rotatably mounted on the connecting body via the first rotating shaft, and the piston rod is rotatably mounted on the connecting body via the second rotating shaft.

4. The material conveyor belt device according to claim 1, characterized in that, The rotary joint includes a third rotating shaft, and the piston rod of the adjusting cylinder is connected to one end of the roller through the third rotating shaft. The material conveying device also includes a rotating connector, which includes a fourth rotating shaft. The cylinder body of the adjusting cylinder is rotatably mounted on the mounting frame through the fourth rotating shaft.

5. The material conveyor belt device according to claim 1, characterized in that, The roller includes a roller body and a roller shaft, the roller body is rotatably fitted onto the roller shaft, and the roller shaft is connected to the rotary joint.

6. The material conveyor according to any one of claims 1 to 5, characterized in that, It also includes a support and an adjustment mechanism, wherein the adjustment mechanism includes a rotating shaft rotatably mounted on the support, and the mounting bracket is fixedly connected to the rotating shaft.

7. The material conveyor according to claim 6, characterized in that, The adjustment mechanism further includes a limiting plate and a limiting pin. The limiting plate is disposed at at least one end of the rotating shaft, and the limiting plate has a plurality of positioning holes distributed around the circumference. The limiting pin is telescopically mounted on the support and points towards the limiting plate.

8. A material belt conveyor device, characterized in that, The device includes a mounting frame, a guide roller, two adjusting cylinders, and two rotary joints. The guide roller is rotatable about a first rotation axis. Each adjusting cylinder includes a cylinder body and a piston rod. The cylinder body is mounted on the mounting frame. Both ends of the guide roller are connected to the two piston rods through the rotary joints. The adjusting cylinders provide tension to the guide roller. The rotary joints allow both ends of the guide roller to rotate relative to the piston rods, so that the first rotation axis can swing in a swing plane.

9. The material conveyor according to claim 8, characterized in that, The rotary joint includes a first rotating shaft and a second rotating shaft. The first rotating shaft is connected to one end of the roller, and the second rotating shaft is connected to the piston rod. Both the first and second rotating shafts are perpendicular to the first rotation axis. The cylinder body is fixed to the mounting bracket; or... The rotating joint includes a third rotating shaft, which is connected to one end of the roller. The material conveying device also includes a rotating connector, which includes a fourth rotating shaft. Both the third and fourth rotating shafts are perpendicular to the first rotation axis. The cylinder is rotatably mounted on the mounting frame via the fourth rotating shaft.

10. A lithium battery production equipment, characterized in that, Includes the belt conveyor as described in any one of claims 1 to 9 above.

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