Material belt conveying device and lithium battery production equipment

Abstract

The invention 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 assembly 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 passing roller can be dynamically adjusted under the action of the restoring force of the adjusting assembly, 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] The present invention relates to the technical field of mechanical automation, and particularly relates to a tape conveying device and a lithium battery production device. Background Art

[0002] In the actual production process, it is often necessary to use a guide roller to transition and guide a tape. For example, in the process of lithium battery cell processing, it is necessary to make the tape such as the pole piece tape and the separator tape bypass the guide roller to achieve the purposes of turning and tensioning. However, due to the machining and installation errors of the guide roller, the tape is likely to have uneven tension distribution when bypassing the guide roller, which may cause the tape to wrinkle. Summary of the Invention

[0003] Based on this, it is necessary to provide a tape conveying device and a lithium battery production device that can effectively prevent the tape from wrinkling in view of the above problems.

[0004] A tape conveying device includes a mounting frame, a guide roller, two adjustment components and two rotary joints. Each adjustment component includes an elastic member and a guide member. The elastic member is connected to the guide member, and the two guide members are respectively connected to the two ends of the guide roller through the rotary 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 guide roller, the second rotating shaft is connected to the guide member, and the guide member is slidably mounted on the mounting frame.

[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 guide roller is rotatably mounted on the connecting body through the first rotating shaft, and the guide member is rotatably mounted on the connecting body through the second rotating shaft.

[0007] In one embodiment, the rotary joint includes a third rotating shaft. The third rotating shaft is connected to one end of the guide roller. The adjustment component further includes a rotating connecting member and a supporting body. The rotating connecting member includes a fourth rotating shaft. The guide member is slidably mounted on the supporting body, and the supporting body is rotatably mounted on the mounting frame through the fourth rotating shaft.

[0008] In one embodiment, the elastic member is set as any one or a combination of several of a spring, a spring piece, and an elastic rope.

[0009] In one embodiment, the guide member includes a guide shaft, and one end of the guide shaft is connected to the rotary joint.

[0010] In one embodiment, the adjustment assembly is provided with a connecting block and at least two mutually parallel guiding members, each of the guiding members is connected to the connecting block, and the connecting block is connected to the rotating joint.

[0011] In one embodiment, the elastic member is configured as a compression spring, a limiting member is provided at one end of the guide shaft away from the rotary joint, and the compression spring is sleeved on the guide shaft.

[0012] In one embodiment, the roller includes a roller body and a roller shaft, the roller body is rotatably mounted on the roller shaft, and the roller shaft is connected to the rotary joint.

[0013] In one of the embodiments, it further includes a support and an adjustment mechanism, wherein the adjustment mechanism includes a rotating shaft rotatably mounted on the support, and the mounting frame is fixedly connected to the rotating shaft.

[0014] In one embodiment, the adjustment mechanism further includes a limit plate and a limit pin, wherein the limit plate is arranged at at least one end of the rotating shaft, and the limit plate is provided with a plurality of positioning holes distributed along the circumference, and the limit pin is telescopically mounted on the support and points to the limit plate.

[0015] A battery cell production device comprises a material belt conveying device as described in any one of the above optional embodiments.

[0016] In the above-mentioned material belt conveying device and lithium battery production equipment, when the tension of the material belt passing through the roller is uneven, the force applied by the material belt to the roller will be different in the longitudinal direction of the roller, that is, in the width direction of the material belt, and the roller will be forced to swing relative to the mounting frame until the force on the roller is balanced again, thereby balancing the tension in the width direction of the material belt. In the process of constantly changing tension, the roller can be dynamically adjusted under the action of the restoring force of the adjustment component, so as to maintain contact with various places in the width direction of the material belt and achieve dynamic balance of the force on the roller. It can be seen that the roller can adaptively adjust the angle according to the change of the tension of the material belt, so that the tension distribution of the material belt in the width direction after passing through the roller is always maintained uniform, so it can effectively prevent the material belt from wrinkling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1Schematic structural diagram of a tape conveying device in an embodiment of the present invention;

[0019] Figure 2 is Figure 1 front view of the shown tape conveying device;

[0020] Figure 3 is Figure 1 bottom view of the shown tape conveying device;

[0021] Figure 4 is Figure 1 enlarged schematic view of partial A in the shown tape conveying device;

[0022] Figure 5 is Figure 1 simplified structural diagram of the shown tape conveying device;

[0023] Figure 6 Simplified structural diagram of a tape conveying device in another embodiment of the present invention;

[0024] Figure 7 is Figure 5 or Figure 6 schematic diagram of the force analysis of the idler roller in the shown tape conveying device under various working conditions. Detailed implementation manners

[0025] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following describes the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by 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. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0027] In addition, 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 quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0031] Please refer to Figure 1 , the present invention provides a tape conveying device 10. In addition, the present invention also provides a battery cell production device (not shown in the figure), and the battery cell production device includes the above-mentioned tape conveying device 10.

[0032] The above-mentioned battery cell production equipment can be equipment such as a winding machine, a die-cutting device, or a slitting and laminating integrated machine. The tape conveying device 10 is used to convey tapes such as electrode tape or separator tape, and can make the tension distribution of the tape more uniform in the width direction after the tape passes around the tape conveying device 10, thereby effectively avoiding wrinkles on the tape and improving the quality of the finally produced battery cell.

[0033] For a winding machine, it generally includes the above-mentioned tape conveying device 10 and a winding needle mechanism. The electrode tape and the separator tape can respectively enter the winding needle mechanism for winding after being guided and transitioned by the tape conveying device 10. Therefore, it can effectively prevent the electrode tape and the separator tape from warping or misaligning due to wrinkles, thereby helping to improve the quality of the battery cell prepared by winding.

[0034] For a slitting and laminating integrated machine, it generally includes the above-mentioned tape conveying device 10 and a cutting device. The electrode tape enters the cutting device for slicing after being guided and transitioned by the tape conveying device 10, and the cutting device can sequentially cut the electrode tape into multiple electrodes. Since the tape conveying device 10 can effectively prevent the electrode tape from wrinkling, the cutting device can reduce the dimensional error when slicing the electrode tape. Moreover, the separator tape required for laminating can also enter the laminating station after being guided and transitioned by the tape conveying device 10, thereby ensuring the flat surface of the separator tape and avoiding wrinkles on the battery cell after laminating. It can be seen that the slitting and laminating integrated machine provided with the tape conveying device 10 can also improve the quality of the battery cell prepared by laminating.

[0035] Please refer to Figure 2 and Figure 3 , the tape conveying device 10 in an embodiment of the present invention includes a mounting frame 100, a roller 200, an adjustment assembly 300, and a rotary joint 400.

[0036] The mounting frame 100 is used to provide support for the roller 200 and the adjustment assembly 300. Both ends of the roller 200 are respectively connected to two adjustment assemblies 300 through rotary joints 400. Specifically, the two adjustment assemblies 300 are generally arranged at intervals on the mounting frame 100 in a first direction, and the roller 200 is located between the two adjustment assemblies 300. More specifically, the mounting frame 100 includes two support plates 110 arranged opposite to each other in the first direction, the roller 200 is located between the two support plates 110, and the two adjustment assemblies 300 are respectively installed on the two support plates 110. The first direction refers to Figure 2 and Figure 3 the left-right direction shown. In the actual application scenario of the tape conveying device 10, the first direction is usually the horizontal direction.

[0037] The strip passing through the strip conveying device 10 can pass around the passing roller 200 and drive the passing roller 200 to rotate. Specifically, the passing roller 200 can rotate around the first rotation axis. Specifically, in this embodiment, the passing 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.

[0038] Since the roller shaft 220 does not need to rotate, it can be directly connected to the rotary joint 400 to simplify the connection structure, and the strip passing around the passing 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 passing roller 200 can rotate around the first rotation axis.

[0039] It should be noted that when the strip conveying device 10 is in the initial state, the first rotation axis of its passing roller 200 extends substantially along the first direction. The above-mentioned initial state refers to the state when the strip conveying device 10 is not started and the strip has not passed around the passing roller 200.

[0040] Please refer to again Figures 1 to 3 , each adjustment assembly 300 includes an elastic member 320 and a guide member 330., and the two guide members 330 are respectively connected to both ends of the passing roller 200 through two rotary joints 400. The elastic member 320 is connected to the guide member 330 and can apply an elastic force to the guide member 330. This elastic force acts on the passing roller 200 through the guide member 330 and the rotary joint 400 in sequence, so as to apply a restoring force to both ends of the passing roller 200.

[0041] The guide member 330 can reciprocate along the first direction. Moreover, the guide member 330 has a tendency to move away from the passing roller 200 under the action of the elastic force provided by the elastic member 320, so the guide member 330 can apply a pulling force to the passing roller 200 through the rotary joint 400. When the passing roller 200 deviates from the initial state, the passing roller 200 also has a tendency to return to the initial state under the action of the elastic member 320.

[0042] In this embodiment, the guide member 330 includes a guide shaft, and one end of the guide shaft is connected to the rotary joint 400.

[0043] Specifically, a bushing can be embedded on the support plate 110, and the guide shaft is slidably installed on the support plate 110 through the bushing. The guide shaft can specifically slide relative to the support plate 110 along the first direction, that is, the guide members 330 located at both ends of the passing roller 200 can approach or move away from each other along the first direction.

[0044] It should be noted that in other embodiments, a guide rail extending in the first direction may also be provided, and a slider may be provided on the guide rail, and the slider may also constitute the guide member 330.

[0045] More specifically, in this embodiment, the elastic member 320 is set as a compression spring, a limiting member 331 is provided at one end of the guide shaft away from the rotary joint, and the compression spring is sleeved on the guide shaft. The elastic force generated by the compression spring acts on the guide shaft through the limiting member 321, and then acts on the idler roller 200 through the rotary joint 400. Moreover, the compression spring is sleeved on the guide shaft and is not easily detached, and the compression direction can be well restricted by the guide shaft, thereby ensuring the reliability of the elastic member 320.

[0046] In addition, the elastic member 320 may also be set as any one or a combination of a leaf spring, a tension spring, an elastic rope, etc. As long as the elastic member 320 can provide an elastic force, its form is not limited, and the connection method of different forms of the elastic member 320 can be adjusted accordingly. For example, when the elastic member 320 is set as a leaf spring, it is clamped between the limiting member 321 and the side of the support plate 110 facing away from the idler roller 200; when the elastic member 320 is set as an elastic rope, one end of it can be fixed to the mounting bracket 100, and the other end is connected to the end of the guide shaft away from the rotary joint 300.

[0047] Furthermore, in this embodiment, the guide member 330 includes at least two mutually parallel guide shafts, the adjustment assembly 300 is provided with a connecting block 340, each guide shaft is connected to the connecting block 340, and the connecting block 340 is connected to the rotary joint 400. The structure formed by at least two mutually parallel guide shafts and the connecting block 340 has higher stability, and the stability during the sliding process of the guide member 330 can be improved.

[0048] The rotary joint 400 allows the idler roller 200 to rotate relative to the guide member 320, so that the first rotation axis of the idler roller 200 swings within a swinging plane, and the above-mentioned swinging plane is a virtual plane where the first rotation axis is located. That is to say, the idler roller 200 is not fixed relative to the mounting bracket 100, but can float within one degree of freedom. During the working process of the tape conveying device 10, the idler roller 200 will be affected by the tape, so as to float relative to the initial state. During the floating process of the idler roller 200, it will drive the rotary joint 400 to displace or deflect, thereby driving the guide member 320 to slide relative to the mounting bracket 100.

[0049] Please refer to Figure 4 and Figure 5 , 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 idler roller 200, the second rotating shaft 420 is connected to the guide member 330, and the guide member 330 is slidably mounted on the mounting bracket 100.

[0050] In this embodiment, the roller shaft 220 is rotatably connected to the rotary joint 400 through the first rotating shaft 410, and the guide member 330 is rotatably connected to the rotary joint 400 through the second rotating shaft 420. The passing roller 200 and the guide member 330 can rotate around the first rotating shaft 410 and the second rotating shaft 420 respectively at the same time, and cooperate with the telescopic movement of the guide member 330, so that the passing roller 200 can swing. Moreover, during the swinging of the passing roller 200, the guide member 330 does not deflect with the passing roller 200, so the adjustment assembly 300 can always maintain a stable position.

[0051] 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 preferably limit the swinging direction of the passing roller 200, making the above-mentioned swinging plane perpendicular to the first rotating shaft 410 and the second rotating shaft 420. That is, the first rotation axis always remains in a plane, thereby improving the stability during the swinging of the passing roller 200.

[0052] Further, in this embodiment, the rotary joint 400 further includes a connecting body 430. The first rotating shaft 410 and the second rotating shaft 420 are installed on the connecting body 430. One end of the passing roller 200 is rotatably installed on the connecting body 430 through the first rotating shaft 410, and the guide member 330 is rotatably installed on the connecting body 430 through the second rotating shaft 420.

[0053] Specifically, the connecting body 430 can adopt two spaced-apart cover plates (not labeled in the figure), and the first rotating shaft 410 and the second rotating shaft 420 are both fixed between the two cover plates. The connecting body 430 can facilitate the installation of the first rotating shaft 410 and the second rotating shaft 420. The guide member 330 and the roller shaft 220 can extend between the two cover plates and be connected to the second rotating shaft 420 and the first rotating shaft 410 respectively, so that the degrees of freedom of the guide member 330 and the roller shaft 220 can be further restricted.

[0054] It should be noted that in other embodiments, the rotary joint 330 can also adopt other structures, such as a universal joint, a spherical pair, etc.

[0055] In addition, please refer to Figure 6 In another embodiment, each adjustment assembly 300 further includes a support body 310, and the guide member 330 is slidably installed on the support body 310. The rotary joint 400 includes a third rotating shaft (not shown in the figure), the third rotating shaft is connected to one end of the passing roller 200, the adjustment assembly 300 further includes a rotating connecting member 350, the rotating connecting member 350 includes a fourth rotating shaft (not shown in the figure), and the support body 310 is rotatably installed on the mounting frame 100 through the fourth rotating shaft.

[0056] The over-roller 200 can rotate about the third rotating shaft, and the support body 310 can rotate about the fourth rotating shaft relative to the mounting frame 100 and cooperate with the guide member 330 to expand and contract, so that the over-roller 200 can swing. The rotating connecting member 350 can adopt structures such as a universal joint and a spherical pair, or can be only set as a pin shaft. Different from the previous embodiment, the position of the adjustment assembly 300 is not fixed, but will shift as the over-roller 200 swings. Moreover, the third rotating shaft and the fourth rotating shaft also extend in a direction substantially perpendicular to the first rotation axis, so the third rotating shaft and the fourth rotating shaft can better limit the swinging direction of the over-roller 200, making the above-mentioned swinging plane perpendicular to the third rotating shaft and the fourth rotating shaft.

[0057] Under different working conditions, the over-roller 200 can reach equilibrium under the restoring force of the adjustment assembly 300. Please refer to Figure 7 , the force conditions of the over-roller 200 under different working conditions are specifically as follows:

[0058] As Figure 7 shown in (a) of S1 , when the over-roller 200 is in the initial state, the material tape does not pass around the over-roller 200, so the resultant force received by the over-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, the axial direction of the over-roller 200, the restoring forces provided by the left and right adjustment assemblies 300 are the same in magnitude and opposite in direction, that is, F S1 =F S2 , and its resultant force is also equal to 0. Moreover, the direction of the restoring force is consistent with the extending direction of the first rotation axis, so the components of F S1 and F S2 in the direction perpendicular to the first rotation axis are 0, so the over-roller 200 remains in balance.

[0059] As Figure 7 shown in (b) of S1 S2 , when the material tape passes around the over-roller 200, the over-roller 200 will tension the material tape, and the material tape will apply a force perpendicular to the first rotation axis to the over-roller 200, thereby driving the over-roller 200 to displace relative to the initial position. The directions of the restoring forces provided by the left and right adjustment assemblies 300 form an angle with the first rotation axis of the over-roller 200, which are θ and θ' respectively. At this time, if the tension of the material tape is evenly distributed in the width direction (that is, the extending direction of the first rotation axis), the above-mentioned force is equal to the resultant force of the components of the restoring forces provided by the two adjustment assemblies 300 to the over-roller 200 in the direction perpendicular to the first rotation axis, that is, sinθ.F S1 +sinθ’.F S2 =F.

[0060] As Figure 7As shown in (c), when the tension of the material strip is unevenly distributed along the width direction, the force applied by the material strip to the roller 200 will be different in the longitudinal direction of the roller 200, that is, in the width direction of the material strip. At this time, the force balance of the roller 200 is broken, so that the roller 200 is forced to swing relative to the mounting frame 100 until it switches to Figure 7 In the state shown in (d), the force on the roller 200 reaches equilibrium again. When the force on the roller 200 reaches equilibrium again, it means that the force applied by the material strip to the roller 200 is consistent in the width direction of the material strip, so the tension distribution of the material strip will also become uniform along the width direction.

[0061] In the process of the continuous change of the tension of the material strip, the restoring force applied to the roller 200 can make the roller 200 realize dynamic adjustment, so as to keep in contact with all parts of the material strip in the width direction, and make the force of the roller 200 reach dynamic balance. In other words, the roller 200 can adaptively adjust the angle of the first rotation axis according to the change of the tension of the material strip, so that the tension distribution of the material strip in the width direction after passing through the roller 200 is always uniform, so that the material strip can be effectively prevented from wrinkling.

[0062] According to the above force analysis, when the tension of the material belt is 0, θ and θ' are both equal to 0°, and when the tension is greater than 0, the force on the roller 200 must be greater than 0, so θ and θ' must not be equal to 0°. In other words, as long as there is a force on the roller 200, it can swing, and the restoring force F S1 and F S2 Therefore, there is no requirement on the restoring force that the adjustment assembly 300 can provide, so an elastic member 320 with a smaller elastic force can be selected to increase the response speed of the swing of the roller 200.

[0063] In the related art, in order to solve the problem of uneven tension distribution in the width direction of the material strip, elastic preload members such as cylinders, compression springs, etc. are generally provided at both ends of the swing roller. The elastic preload member applies an elastic thrust to the swing roller in a direction substantially perpendicular to the axis of the swing roller, so that the swing roller can float up and down, thereby allowing the angle of the swing roller to be adaptively adjusted according to the tension change when the material strip tension fluctuates.

[0064] To avoid the elastic pre-tightening member from being over-compressed and losing its elasticity, it is usually necessary to select an elastic pre-tightening member with a greater elastic force, that is, a greater elastic modulus. However, the tension fluctuation of the strip is generally relatively small, so the tension fluctuation of the strip may not be sufficient to overcome the elastic force of the elastic pre-tightening member, resulting in the swing roller being unable to float in time, so it cannot play a role in real-time adjustment of the strip tension. By setting the adjustment assembly 300 and optimizing the force condition of the idler roller 200 in this application, the elastic force provided by the elastic member 320 enables the idler roller 200 to float smoothly regardless of the magnitude of the elastic force of the elastic member 320, without considering the elastic size of the elastic member 320, precisely to overcome the defects existing in the above-related technologies.

[0065] In addition, please refer to again Figure 1 and Figure 2 In this embodiment, the strip conveying device 10 further includes a support 500 and an adjustment mechanism 600. The adjustment mechanism 600 includes a rotating shaft 610 rotatably mounted on the support 500, and the mounting bracket 100 is fixedly connected to the rotating shaft 610.

[0066] Specifically, the rotating shaft 610 can rotate about the second rotation axis. When the strip conveying device 10 is in the initial state, the second rotation axis is parallel to the first rotation axis. When the adjustment mechanism 600 drives the mounting bracket 100 to rotate through the rotating shaft 610, it can drive the idler roller 200 and the support mechanism 300 as a whole to rotate about the second rotation axis, thereby changing the angle of the above-mentioned swing plane. In the actual use process, by precisely controlling the rotation angle of the rotating shaft 610, the above-mentioned swing plane can be adjusted to be parallel to the horizontal plane. In this way, the idler roller 200 will float in the horizontal plane during the working process, so that the influence of the gravity factor of the components can be basically ignored.

[0067] Further, in this embodiment, the adjustment mechanism 600 further includes a limit plate 620 and a limit pin 630. The limit plate 620 is disposed at at least one end of the rotating shaft 610, and the limit plate 620 is provided with a plurality of circumferentially distributed positioning holes (not shown in the figure). The limit pin 630 is telescopically mounted on the support 500 and points to the limit plate 620.

[0068] By operating the limit pin 630 to extend or retract, the limit pin 630 can be inserted into or withdrawn from the corresponding positioning hole, thereby locking the limit plate 620 to the support 500 or unlocking it. Specifically, the rotating shaft 610 can be installed on the support 500 through a bearing, and the rotating shaft 610 can be manually operated to rotate around its own axis (the second rotation axis), thereby driving the mounting frame 100 to rotate. As the rotating shaft 610 drives the limit plate 620 to rotate, the limit pin 630 can be operated to be inserted into any positioning hole to fix the limit plate 620 to the support 500. When it is necessary to adjust the angle of the swing plane, first pull out the limit pin 630 from the current positioning hole, and then insert the limit pin 630 into the relative positioning hole after the rotating shaft 610 rotates to the required angle.

[0069] More specifically, the adjustment mechanism 600 generally further includes a potentiometer 640, which is mounted on the rotating shaft 610. The potentiometer 640 can record the deflection angle of the rotating shaft 610 relative to the initial position, thereby facilitating accurate control of the rotation angle of the rotating shaft 610.

[0070] When the tension of the material belt passing through the roller 200 is uneven, the above-mentioned material belt conveying device 10 and lithium battery production equipment will cause the force applied by the material belt to the roller 200 to be different in the longitudinal direction of the roller 200, that is, in the width direction of the material belt, and force the roller 200 to swing relative to the mounting frame 100 until the force on the roller 200 is balanced again, thereby balancing the tension in the width direction of the material belt. In the process of constantly changing tension, the roller 200 can be dynamically adjusted under the action of the restoring force of the adjustment component 300, so as to maintain contact with various places in the width direction of the material belt and make the force on the roller 200 reach dynamic balance. It can be seen that the roller 200 can adaptively adjust the angle of the first rotation axis according to the change of the tension of the material belt, so that the tension distribution of the material belt after passing through the roller 200 in the width direction is always maintained uniform, so that the material belt can be effectively prevented from wrinkling.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0072] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A belt conveyor device, characterized in that: It includes a mounting frame, a roller, two adjustment components and two rotating joints, each of the adjustment components includes an elastic member and a guide member, the elastic member is connected to the guide member, and the two guide members are respectively connected to the two ends of the roller through the rotating joints.

2. The material belt conveying device according to claim 1, characterized in that: The rotary joint comprises a first rotating shaft and a second rotating shaft, wherein the first rotating shaft is connected to one end of the roller, and the second rotating shaft is connected to the guide member, and the guide member is slidably mounted on the mounting frame.

3. The material belt conveying device according to claim 2, characterized in that: The rotary joint also includes a connecting body, the first rotating shaft and the second rotating shaft are installed on the connecting body, one end of the roller is rotatably installed on the connecting body through the first rotating shaft, and the guide is rotatably installed on the connecting body through the second rotating shaft.

4. The material belt conveying device according to claim 1, characterized in that: The rotating joint includes a third rotating shaft, which is connected to one end of the roller. The adjustment assembly also includes a rotating connecting member and a supporting body. The rotating connecting member includes a fourth rotating shaft. The guide member can be slidably mounted on the supporting body, and the supporting body can be rotatably mounted on the mounting frame via the fourth rotating shaft.

5. The material belt conveying device according to claim 1, characterized in that: The elastic member is configured as any one of a spring, a spring sheet, and an elastic rope, or a combination of the two.

6. The material belt conveying device according to claim 1, characterized in that: The guide member comprises a guide shaft, and one end of the guide shaft is connected to the rotary joint.

7. The material belt conveying device according to claim 1, characterized in that: The guide member comprises at least two guide shafts which are parallel to each other. The adjustment assembly is provided with a connecting block. Each of the guide shafts is connected to the connecting block, and the connecting block is connected to the rotary joint.

8. The material belt conveying device according to claim 6, characterized in that: The elastic member is configured as a compression spring, a limiting member is provided at one end of the guide shaft away from the rotary joint, and the compression spring is sleeved on the guide shaft.

9. The material belt conveying device according to claim 1, characterized in that: The roller comprises a roller body and a roller shaft. The roller body is rotatably sleeved on the roller shaft, and the roller shaft is connected to the rotary joint.

10. The material belt conveying device according to any one of claims 1 to 9, characterized in that: It also includes a support and an adjusting mechanism, wherein the adjusting mechanism includes a rotating shaft rotatably mounted on the support, and the mounting frame is fixedly connected to the rotating shaft.

11. The material belt conveying device according to claim 10, characterized in that: The adjustment mechanism also includes a limit plate and a limit pin. The limit plate is arranged at at least one end of the rotating shaft, and the limit plate is provided with a plurality of positioning holes distributed along the circumference. The limit pin is telescopically installed on the support and points to the limit plate.

12. A battery cell production device, characterized in that: It comprises a material belt conveying device as described in any one of claims 1 to 11 above.

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