Composite roller and laminator

Abstract

The present application provides a composite roller and a laminator, which relate to the technical field of lithium battery production. The composite roller includes a first driving roller, a second driving roller, a pressing device, and a gap adjusting device; the first driving roller and the second driving roller are arranged at intervals and form a gap therebetween for a composite product to pass through. The pressing device is connected to the second driving roller and is used to apply pressure to the second driving roller to press the composite product; the gap adjusting device is connected to the second driving roller and drives the second driving roller to move away from or close to the first driving roller to adjust the gap between the first driving roller and the second driving roller. The composite roller can adjust the gap between the first driving roller and the second driving roller, can solve the problem of abnormal tape slipping in continuous single-piece production or sheet production, and is beneficial to improving production efficiency and quality. The laminator provided by the present application includes the above-mentioned composite roller, which can prevent tape slipping and improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery production, and more particularly, to a composite roller and a laminator. Background Art

[0002] In lithium battery production equipment, the laminator is an extremely critical process equipment in the production of battery cells, and the composite roller is an important component of the laminator. The composite effect of the composite roller directly affects the composite quality of the unit sheets.

[0003] At present, most of the composite mechanisms of the laminators on the market have the following defects:

[0004] The gap between the upper and lower double rollers in the composite roller is a fixed value. When continuously making single sheets or in case of abnormal sheet production, the material belt slips, resulting in poor single sheet production or sheet production and abnormal shutdown of the equipment, seriously affecting production efficiency and composite quality. Summary of the Invention

[0005] The objectives of the present invention include, for example, providing a composite roller and a laminator that can adjust the gap between the upper and lower double rollers in the composite roller, prevent the material belt from slipping, and improve production efficiency and composite quality.

[0006] Embodiments of the present invention may be implemented as follows:

[0007] In a first aspect, an embodiment of the present invention provides a composite roller, including a first driving roller, a second driving roller, a pressing device, and a gap adjusting device; the first driving roller and the second driving roller are spaced apart and form a gap therebetween for a composite product to pass through;

[0008] The pressing device is connected to the second driving roller, and is configured to apply pressure to the second driving roller to press the composite product; the gap adjusting device is connected to the second driving roller and drives the second driving roller to move away from or close to the first driving roller to adjust the gap between the first driving roller and the second driving roller.

[0009] In an alternative embodiment, the gap adjusting device includes a driving member, a transmission member, and an adjusting plate. The driving member is connected to the transmission member, the transmission member is connected to the adjusting plate, and the adjusting plate is connected to the second driving roller.

[0010] In an alternative embodiment, a guiding device is further included, and the adjusting plate is connected to the guiding device.

[0011] In an alternative embodiment, the guiding device includes a guiding rod and a fixing seat. The fixing seat is provided with a guiding hole, the adjusting plate is connected to the guiding rod, and the guiding rod can move along the guiding hole.

[0012] In an alternative embodiment, it further includes a first connecting plate, the first connecting plate is rotatably connected to the second driving roller, the pressing device is arranged on the first connecting plate and is located on a side of the first connecting plate away from the second driving roller.

[0013] In an alternative embodiment, it further includes a mounting bracket, the second driving roller is connected to the mounting bracket, a rotating shaft is arranged on the mounting bracket, and the first connecting plate is rotatably connected to the rotating shaft.

[0014] In an alternative embodiment, the middle part of the first connecting plate is rotatably connected to the rotating shaft, and pressure balancing devices are arranged at both ends of the first connecting plate.

[0015] In an alternative embodiment, it further includes a second connecting plate and an anti-gravity device, the second connecting plate is arranged opposite to and fixedly connected to the first connecting plate, the anti-gravity device is arranged on the second connecting plate, and the anti-gravity device is used to offset the gravity of the second driving roller, the pressure balancing device and the pressing device.

[0016] In an alternative embodiment, a pressure sensor is arranged on the first connecting plate, and the pressing device is connected to the pressure sensor.

[0017] In a second aspect, an embodiment of the present invention provides a laminator, including the composite roller according to any one of the foregoing embodiments.

[0018] The beneficial effects of the composite roller and the laminator provided by the present invention include, for example:

[0019] For the composite roller provided by the embodiment of the present invention, the first driving roller and the second driving roller are arranged at intervals, a gap for the composite product to pass through is formed between the first driving roller and the second driving roller, the second driving roller is connected to the gap adjusting device, and the gap adjusting device can drive the second driving roller to move away from or close to the first driving roller to adjust the gap between the first driving roller and the second driving roller, preventing the phenomenon of tape slippage during the working process of the composite roller, and improving the composite quality and production efficiency of the composite roller.

[0020] For the laminator provided by the embodiment of the present invention, including the above-mentioned composite roller, due to the setting of the gap adjusting device, the phenomenon of tape slippage during the working process of the composite roller can be effectively prevented, and the composite quality and production efficiency of the composite roller are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic diagram of the overall structure of the composite roller provided by a specific embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the composite principle of the composite roller provided by a specific embodiment of the present invention;

[0024] Figure 3 Simplified structural diagram of the composite roller from the first perspective provided by a specific embodiment of the present invention;

[0025] Figure 4 Simplified structural diagram of the composite roller from the second perspective provided by a specific embodiment of the present invention.

[0026] Explanation of reference numerals: 100 - composite roller; 101 - composite product; 110 - frame; 111 - first connecting plate; 112 - second connecting plate; 115 - pressure balance device; 120 - first driving roller; 121 - first mounting bracket; 130 - second driving roller; 131 - second mounting bracket; 133 - rotating shaft; 135 - gap measuring instrument; 140 - pressing device; 150 - guiding device; 151 - fixed seat; 152 - guiding rod; 160 - anti-gravity device; 170 - gap adjusting device; 171 - driving member; 172 - lead screw; 173 - nut; 175 - adjusting plate; 180 - pressure sensor. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0029] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of the present invention is usually placed during use. This is 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. Therefore, it should not be construed as a limitation to the present invention.

[0031] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0032] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0033] In the existing composite mechanism, the gap between the upper and lower double rollers is mostly a fixed value, which is not convenient to adjust and is prone to the phenomenon of tape slipping, seriously affecting the composite efficiency and quality. Secondly, the composite pressure between the upper and lower double rollers depends on the self-weight of the mechanism, the applied composite pressure, and the friction coefficient of the mechanism. That is, the composite pressure needs to be calculated through the cylinder pressure, the self-weight of the equipment, and the friction coefficient. The data results are inaccurate, and there is no online feedback and monitoring, lacking a data closed-loop, seriously affecting the quality monitoring during the product manufacturing process.

[0034] In order to overcome the deficiencies of the prior art, the present application proposes a composite roller and a laminator, which can effectively improve the above-mentioned defects to improve the composite quality and efficiency of the composite roller.

[0035] Please refer to Figures 1 to 3, this embodiment provides a composite roller 100, which includes a frame 110 and a first driving roller 120, a second driving roller 130, a pressing device 140, a guiding device 150, an anti-gravity device 160 and a gap adjusting device 170 arranged on the frame 110; the first driving roller 120 and the second driving roller 130 are arranged at intervals and form a gap therebetween for the composite product 101 to pass through. The pressing device 140 is connected to the second driving roller 130, and the pressing device 140 is used to apply pressure to the second driving roller 130 to press the composite product 101; the gap adjusting device 170 is connected to the second driving roller 130 and drives the second driving roller 130 to move away from or close to the first driving roller 120 to adjust the gap between the first driving roller 120 and the second driving roller 130. By adjusting the gap between the first driving roller 120 and the second driving roller 130 in real time, it can effectively prevent the material tape from slipping during single-piece production or film production, improve the composite quality, and enhance the composite effect. It should be noted that the composite product 101 in this embodiment is a material tape for single-piece production or film production. Of course, it is not limited thereto, and the composite roller 100 can also be applied in other occasions or fields, which will not be specifically limited here.

[0036] The gap adjusting device 170 includes a driving member 171, a transmission member and an adjusting plate 175. The driving member 171 is in transmission connection with the transmission member, the transmission member is connected to the adjusting plate 175, and the adjusting plate 175 is connected to the second driving roller 130. The driving member 171 drives the adjusting plate 175 to move through the transmission member to drive the second driving roller 130 to move away from or close to the first driving roller 120, so as to realize the adjustment of the gap between the first driving roller 120 and the second driving roller 130. In this embodiment, the driving member 171 adopts a driving motor, and the transmission member adopts a lead screw 172-nut 173 assembly. The driving motor rotates to drive the lead screw 172 to rotate, so that the nut 173 moves along the axial direction of the lead screw 172. The nut 173 is connected to the adjusting plate 175, and the adjusting plate 175 moves up and down during the movement of the nut 173, thereby realizing the adjustment of the gap between the first driving roller 120 and the second driving roller 130. Of course, it is not limited thereto. The driving member 171 in the adjusting assembly can also be a motor or other driving elements, and the transmission member can also adopt other structures, such as a crank-slider or a cam, etc., which will not be specifically limited here. Optionally, the gap adjusting device 170 can also adopt other structural forms such as cylinder lifting and hydraulic cylinder lifting, which will not be exemplified one by one here.

[0037] Optionally, a gap measuring instrument 135 is further arranged on the frame 110 for detecting the size of the gap between the first driving roller 120 and the second driving roller 130. In this embodiment, the gap measuring instrument 135 adopts a dial indicator, and the gap adjustment result can be viewed in real time. By adjusting the gap to adapt to different process requirements, the compatibility of the equipment is improved.

[0038] Please refer to Figure 4The frame 110 includes a mounting bracket and a first connecting plate 111 and a second connecting plate 112 connected to each other. A guide device 150 is also provided on the frame 110, and an adjustment plate 175 is connected to the guide device 150. Further, the guide device 150 includes a guide rod 152 and a fixed seat 151, and the fixed seat 151 is fixed on the frame 110, and the fixed seat 151 is provided with a guide hole (not marked in the figure). One end of the guide rod 152 is connected to the first connecting plate 111, and the other end of the guide rod 152 is connected to the second connecting plate 112, and the guide rod 152 can move up and down along the guide hole. Optionally, the adjustment plate 175 is connected to the first connecting plate 111, and the first connecting plate 111 is rotatably connected to the second driving roller 130, and the pressure device 140 is arranged on the first connecting plate 111, and is located on the side of the first connecting plate 111 away from the second driving roller 130.

[0039] Optionally, the mounting bracket includes a first mounting bracket 121 and a second mounting bracket 131, the first driving roller 120 is mounted on the first mounting bracket 121, and the second driving roller 130 is connected to the second mounting bracket 131, that is, the second driving roller 130 is mounted on the second mounting bracket 131. A rotating shaft 133 is provided on the second mounting bracket 131, and the first connecting plate 111 is rotatably connected to the rotating shaft 133. The first connecting plate 111 is located on a side of the second mounting bracket 131 away from the second driving roller 130. The pressure-applying device 140 is provided on a side of the first connecting plate 111 away from the second mounting bracket 131. In this embodiment, the middle portion of the first connecting plate 111 is rotatably connected to the rotating shaft 133, and pressure balancing devices 115 are provided at both ends of the first connecting plate 111. The pressure balancing device 115 is located on a side of the first connecting plate 111 close to the second mounting bracket 131, and the number of the pressure balancing devices 115 is two, which are respectively provided at both ends of the first connecting plate 111. In order to make the pressure applied by the pressure-applying device 140 act on the second driving roller 130 steadily and make the second driving roller 130 be evenly stressed. Further, the two pressure balancing devices 115 are symmetrically distributed about the rotating shaft 133, and the rotating shaft 133 is located in the middle of the second driving roller 130, so that the pressure applied by the pressure-applying device 140 acts on the rotating shaft 133, and then is evenly distributed to the two ends of the second driving roller 130 through the second mounting bracket 131. The two pressure balancing devices 115 are used to keep the first connecting plate 111 balanced, that is, the first connecting plate 111 is parallel to the axis of the second driving roller 130, so as to improve the composite effect. Optionally, the pressure balancing device 115 adopts a cylinder. It should be noted that the pressure balancing device 115 can also be set on the side of the first connecting plate 111 away from the second mounting bracket 131, as long as the balance of the first connecting plate 111 can be maintained, and the pressure applied by the pressure-applying device 140 can be smoothly and evenly transmitted to the second driving roller 130, which is not specifically limited here.

[0040] Optionally, a pressure sensor 180 is provided on the first connecting plate 111, and the pressing device 140 is connected to the pressure sensor 180. In this embodiment, the pressing device 140 includes, but is not limited to, a cylinder. The output rod of the cylinder is connected to the pressure sensor 180. The pressure sensor 180 is used to detect the composite pressure applied by the pressing device 140, facilitating the operator to grasp the pressing magnitude of the pressing device 140 in real time during operation. It is easy to understand that the pressure sensor 180 can be a directly readable pressure gauge. Or the pressure sensor 180 adopts a pressure sensing element, which is connected to the controller, transmits the collected pressure data to the controller, and the controller then displays the pressure magnitude through a display screen for the operator to view, realizing the visualization of the composite pressure during the pressing process and facilitating the quality monitoring during the pressing process.

[0041] Furthermore, the second connecting plate 112 is disposed opposite to and fixedly connected to the first connecting plate 111. The anti-gravity device 160 is connected to the pressing device 140. The anti-gravity device 160 is located between the first connecting plate 111 and the second connecting plate 112, and the anti-gravity device 160 is provided on the second connecting plate 112. The anti-gravity device 160 is used to counteract the gravity of the second driving roller 130, the pressure balance device 115, and the pressing device 140. By providing the anti-gravity device 160, the gravity of the second driving roller 130, the pressure balance device 115, and the pressing device 140 can be counteracted, making the composite pressure detected by the pressure sensor 180 more accurate, improving the composite quality and composite stability. Moreover, since the pressure sensor 180 can realize the visualization of the composite pressure, the pressure magnitude applied by the pressing device 140 can be adjusted according to the composite pressure magnitude fed back by the pressure sensor 180 in real time, realizing the online monitoring and adjustment of the composite pressure, with more convenient operation, higher automation and intelligence levels, and facilitating the quality monitoring during the pressing process.

[0042] In this embodiment, the adjusting plate 175 in the gap adjusting device 170 is disposed between the pressing device 140 and the anti-gravity device 160 and is respectively connected to the pressing device 140 and the anti-gravity device 160. In this way, when the adjusting plate 175 moves up and down, it can drive the first connecting plate 111, the second connecting plate 112, the second mounting bracket 131, the pressing device 140, the pressure balance device 115, the anti-gravity device 160, and the second driving roller 130 to move simultaneously. The gap adjusting device 170 is driven by a motor, does not require manual adjustment, has higher gap adjustment accuracy, and can realize online adjustment without stopping the machine, making the gap adjustment more convenient, time-saving and labor-saving.

[0043] An embodiment of the present invention further provides a laminator, including the composite roller 100 according to any one of the foregoing embodiments. As the core mechanism in the laminator, the composite roller 100 greatly improves the composite quality and efficiency of the laminator.

[0044] A composite roller 100 and a laminator provided according to this embodiment have the following working principle:

[0045] It is easy to understand that the first driving roller 120 is driven to rotate by the first motor M1, and the second driving roller 130 is driven to rotate by the second motor M2 to realize the movement of the strip, that is, the composite product 101. The composite roller 100 can realize the on-line adjustment of the gap between the first driving roller 120 and the second driving roller 130. The motor drives the lead screw 172 to rotate, and the nut 173 moves along the axial direction of the lead screw 172, driving the adjustment plate 175 to move. The adjustment plate 175 is respectively connected to the pressing device 140 and the anti-gravity device 160. The movement of the adjustment plate 175 can drive the first connecting plate 111, the second connecting plate 112, the guide rod 152, the second mounting bracket 131, the pressing device 140, the pressure balance device 115, the anti-gravity device 160 and the second driving roller 130 to move simultaneously, so that the second driving roller 130 moves towards the first driving roller 120 to reduce the gap; so that the second driving roller 130 moves away from the first driving roller 120 to increase the gap. And during the movement, the guide rod 152 moves along the guide hole to realize the movement guidance, ensure the movement along a straight line, and improve the adjustment accuracy. The gap of the composite roller 100 can be adjusted on-line in real time, solving the problem of strip slipping when continuously making single pieces or abnormal film making, saving time and effort, being convenient for adjustment, and being beneficial to improving the composite quality and efficiency.

[0046] By setting the anti-gravity device 160, the pressure balance device 115 and the pressure sensor 180 on the composite roller 100, during the process of the pressing device 140 applying pressure to the second driving roller 130, the pressure balance device 115 can ensure that the first connecting plate 111 remains balanced, making the force on the second driving roller 130 more uniform and improving the composite stability. The anti-gravity device 160 can be used to offset the self-gravity of the pressing device 140, the second driving roller 130 and the pressure balance device 115, etc. The pressure value feedback by the pressure sensor 180 is the magnitude of the composite pressure. In this way, the magnitude of the composite pressure can be visually displayed, realizing the visualization of the composite pressure data, and it can be directly obtained without conversion, and the data is more accurate and reliable, which is convenient for quality monitoring during the product manufacturing process. The pressure sensor 180 detects and feedbacks the magnitude of the composite pressure in real time, and can monitor the composite pressure value on-line in real time. The magnitude of the composite pressure can be set according to the actual process requirements, with a wide range of applications, which is beneficial to realizing intelligent control and improving the automation and intelligence level of the composite roller 100.

[0047] In summary, the embodiment of the present invention provides a composite roller 100 and a laminator, which have the following beneficial effects:

[0048] By providing a gap adjustment device 170, the composite roller 100 can adjust the gap between the first driving roller 120 and the second driving roller 130. The adjustment can be carried out online in real time, which saves time and effort, is convenient to adjust, and has high gap adjustment accuracy. By adjusting the gap in real time, the problem of tape slippage can be prevented when continuous single-chip production or film production is abnormal, improving the yield of single-chip production and the equipment operation rate. In addition, the composite roller 100 is also provided with an anti-gravity device 160, a pressure balance device 115, and a pressure sensor 180, which can ensure accurate pressure application by the pressure application device 140, uniform force on the second driving roller 130 and balance maintenance. The anti-gravity device 160 cancels out the self-gravity of the equipment, and the data of the composite pressure magnitude feedback by the pressure sensor 180 is more accurate and visible, making monitoring more intuitive. The magnitude of the composite pressure can be set according to actual process requirements, with a wide range of applications. The composite pressure value can be monitored online in real time, facilitating quality monitoring during the product manufacturing process and enhancing the automation and intelligence levels of the composite roller 100.

[0049] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A composite roller, characterized in that, It includes a frame, a first driving roller, a second driving roller, a pressing device, an anti-gravity device and a gap adjusting device; the first driving roller and the second driving roller are arranged at intervals and a gap is formed therebetween for the composite product to pass through; The pressing device is connected to the second driving roller and is used to apply pressure to the second driving roller to press the composite product; the gap adjusting device is connected to the second driving roller and drives the second driving roller to move away from or close to the first driving roller to adjust the gap between the first driving roller and the second driving roller; The gap adjusting device includes a driving member, a transmission member and an adjusting plate. The driving member is in transmission connection with the transmission member, the transmission member is connected to the adjusting plate, and the adjusting plate is connected to the second driving roller; The frame includes a mounting bracket and a first connecting plate and a second connecting plate that are connected to each other. The second connecting plate is arranged opposite to and fixedly connected to the first connecting plate; the adjusting plate is connected to the first connecting plate, the first connecting plate is rotatably connected to the second driving roller, and the pressing device is arranged on the first connecting plate and on the side of the first connecting plate away from the second driving roller; The mounting bracket includes a first mounting bracket and a second mounting bracket. The first driving roller is mounted on the first mounting bracket, and the second driving roller is mounted on the second mounting bracket; a rotating shaft is provided on the second mounting bracket, the first connecting plate is rotatably connected to the rotating shaft, and the first connecting plate is located on the side of the second mounting bracket away from the second driving roller; two pressure balance devices symmetrically distributed about the rotating shaft are provided on the first connecting plate; The anti-gravity device is connected to the pressing device. The anti-gravity device is located between the first connecting plate and the second connecting plate and is arranged on the second connecting plate. The anti-gravity device is used to offset the gravity of the second driving roller, the pressure balance device and the pressing device.

2. The composite roller according to claim 1, characterized in that, It further includes a guiding device arranged on the frame, and the adjusting plate is connected to the guiding device.

3. The composite roller according to claim 2, characterized in that, The guiding device includes a guiding rod and a fixed seat. The fixed seat is provided with a guiding hole. The adjusting plate is connected to the guiding rod, and the guiding rod can move along the guiding hole.

4. The composite roller according to claim 1, characterized in that, A pressure sensor is provided on the first connecting plate, and the pressing device is connected to the pressure sensor.

5. A laminator, characterized in that, It includes the composite roller according to any one of claims 1 to 4.

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