Material belt die cutting device

Abstract

The utility model relates to the technical field of battery manufacturing, and discloses a material belt die cutting device which comprises a die cutting mechanism, a die cutting mechanism, a die cutting mechanism, a die cutting mechanism, a die cutting mechanism and a die cutting mechanism, and the die cutting mechanism is arranged on a material belt conveying path and used for cutting a material belt; the conveying mechanism is arranged on the downstream portion of the die cutting mechanism in the feeding direction of the material belt and comprises a vacuumizing base and a conveying belt arranged on the vacuumizing base, the vacuumizing base is provided with a first vacuumizing cavity and a second vacuumizing cavity, and the first vacuumizing cavity and the second vacuumizing cavity are arranged in the feeding direction of the material belt. The first vacuumizing cavity and the second vacuumizing cavity are used for providing adsorption force for the conveying belt so that the conveying belt can convey cut material belts and waste materials, and the adsorption force provided by the first vacuumizing cavity and the adsorption force provided by the second vacuumizing cavity can be adjusted respectively. And the conveying roller is arranged close to the conveying belt, and the conveying roller is used for conveying the cut material belt to the downstream.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a strip die-cutting device. Background Art

[0002] Battery pole sheet die-cutting technology is a key step in the lithium-ion battery manufacturing process. It involves cutting the tabs into predetermined sizes and shapes on the battery pole sheets. This technology is crucial to ensuring battery performance and safety, as the quality of the pole sheets directly affects the battery's electrical conductivity, internal resistance, charge-discharge performance, and long-term stability. Laser cutting technology is widely used in battery pole sheet cutting due to its high production efficiency, excellent process stability, and ability to achieve micron-level cutting accuracy. Laser cutting reduces material loss, avoids tool wear, and can complete cutting without inducing mechanical stress, thereby maintaining the integrity of the pole sheet and the adhesion of the coating.

[0003] However, the conveying mechanism in the prior art consists of a vertical area and an inclined area. The vertical area conveys the cut material strip and the waste formed by cutting through vacuum adsorption force. After the material strip leaves the vertical area, it is conveyed to the downstream by the conveying roller. The waste continues to follow the conveying mechanism to the inclined area, and is then conveyed to the waste suction port by the inclined area. Since the negative pressures in the vertical area and the inclined area in the waste discharge assembly are basically equal, when the electrode conveying speed is fast, when the material strip is separated from the waste, the pole ears on the material strip are easily affected by the adsorption force of the inclined area and folded, which ultimately affects the quality of the battery cell. Utility Model Content

[0004] An embodiment of the present application discloses a material strip die-cutting device, which can reduce the influence of the adsorption force provided by the transmission mechanism on the tabs on the material strip during the transmission of the cut material strip, reduce the folding of the tabs on the material strip, reduce the generation of waste, ensure the cutting effect of the material strip, and improve the quality of the battery cell.

[0005] To achieve the above objectives, the present invention discloses a strip die-cutting device, comprising:

[0006] A die-cutting mechanism, the die-cutting mechanism being arranged on the transmission path of the material strip and being used for cutting the surface of the material strip to form tabs;

[0007] A conveying mechanism, wherein the conveying mechanism is arranged downstream of the die-cutting mechanism along the feeding direction of the material belt, the conveying mechanism includes a vacuum seat and a conveyor belt arranged on the vacuum seat, the vacuum seat is provided with a first vacuum cavity and a second vacuum cavity, the first vacuum cavity and the second vacuum cavity are arranged along the feeding direction of the material belt, the first vacuum cavity is used to provide the conveyor belt with an adsorption force for adsorbing the cut material belt and waste materials, and the second vacuum cavity is used to provide the conveyor belt with the adsorption force for adsorbing waste materials, so that the conveyor belt can convey the cut material belt and the waste materials formed by cutting, the first vacuum cavity is connected to a first negative pressure source, and the second vacuum cavity is connected to a second negative pressure source;

[0008] A conveying roller is provided close to the conveying belt and is used to convey the cut material belt downstream.

[0009] As an optional implementation, the adsorption force provided by the first vacuum chamber is greater than the adsorption force provided by the second vacuum chamber.

[0010] As an optional embodiment, the first vacuum chamber and the second vacuum chamber are spaced apart along the feeding direction of the material belt, and the conveying roller is located at the interval between the first vacuum chamber and the second vacuum chamber.

[0011] As an optional implementation, the position of the conveying roller is adjustable.

[0012] As an optional embodiment, the conveyor belt is a synchronous belt, and the conveying mechanism also includes a first synchronous pulley and a second synchronous pulley, the first synchronous pulley and the second synchronous pulley are rotatably connected to the vacuum seat, and the synchronous belt is transmission-connected to the first synchronous pulley and the second synchronous pulley.

[0013] As an optional embodiment, the conveying mechanism also includes an adsorption plate, which is provided with a plurality of connecting holes, at least a portion of the connecting holes is connected to the first vacuum chamber, at least a portion of the connecting holes is connected to the second vacuum chamber, the connecting holes are arranged toward the conveyor belt, and the conveyor belt is provided with a plurality of adsorption holes.

[0014] As an optional embodiment, the adsorption surface of the adsorption plate and the portion of the conveyor belt corresponding to the adsorption surface of the adsorption plate are spaced apart.

[0015] As an optional embodiment, the conveying mechanism also includes a first side block and a second side block, which are arranged at both ends of the adsorption plate along the width direction of the adsorption plate, and the first side block and the second side block are used to limit the conveyor belt.

[0016] As an optional embodiment, the multiple adsorption holes include a first adsorption hole group and a second adsorption hole group, the first adsorption hole group and the second adsorption hole group are arranged along the width direction of the conveyor belt, the first adsorption hole group is used to adsorb the waste, and the second adsorption hole group is used to adsorb the material belt.

[0017] As an optional embodiment, the first adsorption hole group includes a plurality of first adsorption holes spaced apart along the feeding direction, and the second adsorption hole group includes a plurality of second adsorption holes spaced apart along the feeding direction.

[0018] As an optional implementation, the first adsorption hole is a waist hole, and the second adsorption hole is a round hole.

[0019] As an optional implementation, the adsorption surface of the first vacuum chamber and the adsorption surface of the second vacuum chamber are in the same plane.

[0020] As an optional embodiment, the strip die-cutting device also includes a stripping plate, which is located downstream of the conveying roller. The stripping plate is fixed to the vacuum seat and one end is close to the conveyor belt for adsorbing the surface of the strip. The stripping plate is used to strip the waste material on the conveyor belt.

[0021] As an optional embodiment, the material strip die-cutting device further includes a brush roller, which is located downstream of the stripping plate and can roll brush the surface of the conveyor belt for adsorbing the material strip.

[0022] As an optional embodiment, the conveying mechanism further includes a driving motor, which drives the conveyor belt to rotate, and the driving motor is transmission-connected to the brush roller to drive the brush roller to rotate.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] The material strip die-cutting device provided in the embodiment of the present application is provided with a first vacuum chamber and a second vacuum chamber. The first vacuum chamber and the second vacuum chamber are used to provide adsorption force for the conveyor belt so that the conveyor belt can convey the cut material strip and waste. The adsorption force provided by the first vacuum chamber and the second vacuum chamber can be adjusted respectively by the first negative pressure source and the second negative pressure source to reduce the influence of the second vacuum chamber on the material strip when the material strip leaves the first vacuum chamber, reduce the folding of the pole ears on the material strip, reduce the generation of waste, ensure the cutting effect of the material strip, and improve the quality of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the cut material strip disclosed in the embodiment of the present application;

[0027] Figure 2 It is a structural schematic diagram of a strip die-cutting device in the related art;

[0028] Figure 3 This is a schematic structural diagram of the strip die-cutting device disclosed in an embodiment of the present application;

[0029] Figure 4 for Figure 3 Another structural schematic diagram of the strip die-cutting device (transfer roller omitted);

[0030] Figure 5 for Figure 4 Schematic diagram of the structure of the material strip die-cutting device (omitted conveyor belt);

[0031] Figure 6 for Figure 4 Schematic diagram of the structure of the vacuum seat.

[0032] Description of reference numerals:

[0033] 100-material strip die-cutting device; 10-material strip; 1-die-cutting mechanism; 2-transmission mechanism; 21-vacuum seat; 22-conveyor belt; 221-adsorption hole; 2211-first adsorption hole group; 2212-second adsorption hole group; 221A-first adsorption hole; 221B-second adsorption hole; 23-first vacuum chamber; 24-second vacuum chamber; 25-first synchronous pulley; 26-second synchronous pulley; 27-adsorption plate; 271-connecting hole; 28-first side block; 29-second side block; 210-drive motor; 211-first negative pressure source; 212-second negative pressure source; 3-conveyor roller; 4-peeling plate; 5-brush roller; 51-first transmission wheel; 52-second transmission wheel; 53-transmission belt; 6-waste suction pipe. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] In this application, terms such as "upper," "lower," "top," "bottom," "inner," "vertical," and "horizontal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0036] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "disposed," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0038] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0039] See also Figure 1 In lithium-ion battery production, cutting battery strips is one of the core processes. The main task is to accurately cut the strips to the specified size and shape to form the tabs. This step is crucial to battery performance and safety, as the quality of the strips directly affects the battery's conductivity, internal resistance, charge and discharge characteristics, and long-term reliability. Laser cutting technology, with its high-efficiency production characteristics, stable process performance, and micron-level precision control, has been widely used in the field of battery strip cutting. This technology can effectively reduce material consumption and avoid wear on cutting tools. At the same time, it completes cutting without additional mechanical stress, ensuring the integrity of the strip structure and the stability of the coating, which plays a decisive role in improving the overall performance of the battery.

[0040] In the prior art, see Figure 2 The conveying mechanism consists of a vertical section A and an inclined section B. The vacuum-generated suction force is responsible for conveying the cut material strip 10 and the resulting waste. After the material strip 10 is conveyed in the vertical section A, it is conveyed downstream by the conveying device C; the waste continues to pass through the inclined section B and is ultimately directed to the waste collection port. However, because the negative pressure inside the vertical section A and the inclined section B is roughly equal, when the conveying speed of the material strip 10 is increased, the tabs on the material strip 10 are easily affected by the residual suction force of the inclined section during the separation process of the material strip 10 and the waste, causing the tabs to fold over, which in turn has an adverse effect on the final quality of the battery cell.

[0041] Based on this, an embodiment of the present application discloses a material strip die-cutting device, which can reduce the influence of the adsorption force provided by the transmission mechanism on the pole ears on the material strip during the transmission of the cut material strip, reduce the folding of the pole ears on the material strip, reduce the generation of waste, ensure the cutting effect of the material strip, and improve the quality of the battery cell.

[0042] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0043] See also Figure 3 , Figure 3 Schematic diagram of the structure of the strip die-cutting device 100 disclosed in the embodiment of the present application. The embodiment of the present application discloses a strip die-cutting device 100, including:

[0044] The die-cutting mechanism 1 is arranged on the transmission path of the material strip 10 and is used to cut the surface of the material strip 10 to form the tabs;

[0045] The conveying mechanism 2 is arranged downstream of the die-cutting mechanism 1 along the feeding direction of the material belt 10. The conveying mechanism 2 includes a vacuum seat 21 and a conveyor belt 22 arranged on the vacuum seat 21. The vacuum seat 21 is provided with a first vacuum cavity 23 and a second vacuum cavity 24. The first vacuum cavity 23 and the second vacuum cavity 24 are arranged along the feeding direction of the material belt 10. The first vacuum cavity 23 is used to provide the conveyor belt 22 with an adsorption force for adsorbing the cut material belt 10 and the waste formed by the cutting. The second vacuum cavity 24 is used to provide the conveyor belt 22 with an adsorption force for adsorbing the waste formed by the cutting, so that the conveyor belt 22 can convey the cut material belt 10 and the waste formed by the cutting. The first vacuum cavity 23 is connected to the first negative pressure source 211, and the second vacuum cavity 24 is connected to the second negative pressure source 212;

[0046] The conveying roller 3 is provided close to the conveying belt 22 and is used to convey the cut material strip 10 downstream.

[0047] Specifically, the material strip 10 is fed into the die-cutting mechanism 1 and is cut in the die-cutting mechanism 1 to form tabs and waste materials. The conveying mechanism 2 conveys the cut material strip 10 and waste materials downstream through the conveyor belt 22. The first vacuum chamber 23 and the second vacuum chamber 24 are arranged along the feeding direction of the material strip 10. The first vacuum chamber 23 provides the conveyor belt 22 with adsorption force for adsorbing the material strip 10 and waste materials, and the second vacuum chamber 24 provides the conveyor belt 22 with adsorption force for conveying waste materials. The material strip 10 is conveyed away from the conveying mechanism 2 through the conveying roller 3. The adsorption force provided by the first vacuum chamber 23 and the second vacuum chamber 24 can be adjusted as needed by the first negative pressure source 211 and the second negative pressure source 212 respectively.

[0048] Among them, the adsorption forces provided by the first vacuum chamber 23 and the second vacuum chamber 24 can be adjusted separately, which can control the position and stability of the cut material strip 10 and waste during the transmission process, so as to reduce the impact of the second vacuum chamber 24 on the material strip 10 when the material strip 10 leaves the first vacuum chamber 23, reduce the folding of the pole ears on the material strip 10, reduce the generation of waste, ensure the cutting effect of the material strip 10, and improve the quality of the battery cell; and the adjustable adsorption force enables the system to be flexibly adjusted according to different production requirements or material characteristics, such as adapting to different thicknesses of material strips 10 or maintaining stable transmission in high-speed production mode, thereby enhancing the adaptability and flexibility of the production line; through refined management of vacuum adsorption force, unnecessary energy consumption can be avoided, especially when processing lighter or thinner materials, moderately reducing the adsorption force can effectively save energy and realize the greening of the production process.

[0049] Optionally, the adsorption force provided by the first vacuum chamber 23 is greater than the adsorption force provided by the second vacuum chamber 24. If the adsorption force provided by the first vacuum chamber 23 is the same as the adsorption force provided by the second vacuum chamber 24, the same adsorption force means that the waste and the cut material strip 10 are subjected to the same adsorption control force during the transmission process, which will increase the difficulty of separating the material strip 10 from the waste, and may cause the waste to fail to be removed in time, affecting subsequent processing. Moreover, when the material strip 10 is separated from the waste, if the adsorption force of the second vacuum chamber 24 is the same as the adsorption force of the first vacuum chamber 23, the tab may be affected by the adsorption force of the second vacuum chamber 24, resulting in folding. Or deform, affecting the electrical performance and stability of the battery; if the adsorption force provided by the first vacuum chamber 23 is less than the adsorption force provided by the second vacuum chamber 24, the cut material strip 10 may jitter or deflect during the transmission process due to insufficient adsorption force, affecting the subsequent transmission and winding quality, and even causing damage to the material strip 10. The tab is a key component connecting the battery material strip 10. If the material strip 10 is unstable during transmission, the tab may be subjected to additional stress, increasing the risk of breakage or deformation. The adsorption force of the second vacuum chamber 24 is too strong, and part of the material strip 10 may be incorrectly adsorbed during the separation stage, resulting in reduced material processing efficiency and even material loss.

[0050] The adsorption force provided by the first vacuum chamber 23 is greater than the adsorption force provided by the second vacuum chamber 24. The high adsorption force of the first vacuum chamber 23 can ensure that the cut material strip 10 remains stable during high-speed transmission, avoiding the material strip 10 from offsetting or the tab folding. At the same time, the weaker adsorption force of the second vacuum chamber 24 adsorbs the waste, promotes the separation of the material strip 10 from the waste, and reduces the interference of the waste on the material strip 10; the enhanced material control capability means that the production line can maintain operation at a higher speed without worrying about the material transmission stability, thereby improving production efficiency and shortening the production cycle of the battery material strip 10; compared with a single cavity providing high adsorption force, the hierarchical design can reduce overall energy consumption while ensuring production efficiency. In addition, the lower adsorption force requirement helps to reduce wear and maintenance costs on the conveyor belt 22.

[0051] In some embodiments, see Figure 3 and Figure 6 , Figure 6This is a structural diagram of the vacuum seat 21. The first vacuum chamber 23 and the second vacuum chamber 24 are spaced apart along the feeding direction of the material strip 10. The conveying roller 3 is located at the interval between the first vacuum chamber 23 and the second vacuum chamber 24. The interval between the first vacuum chamber 23 and the second vacuum chamber 24 is a non-vacuum area. The separation point between the material strip 10 and the waste is set at the interval. The material strip 10 and the waste will not be affected by the adsorption force when separated. On the one hand, it can avoid the influence of the adsorption force on the upper ear of the material strip 10. On the other hand, the cut material strip 10 can be immediately conveyed after being adsorbed and stabilized by the first vacuum chamber 23. At the same time, the second vacuum chamber 24 focuses on the adsorption and separation of the waste, ensuring the immediate transmission of the material strip 10 and the efficient treatment of the waste, thereby improving the continuity and efficiency of the production process.

[0052] In some embodiments, the position of the conveyor roller 3 is adjustable. Specifically, the conveyor roller 3 can be moved laterally or longitudinally as needed to adjust the position of the conveyor roller 3 to convey the cut material strip 10. On the one hand, it can ensure that during the conveying process of the material strip 10, the tabs on the cut material strip 10 will not be affected by the adsorption force provided by the second vacuum chamber 24; on the other hand, the lateral and longitudinal movement capabilities mean that the conveyor roller 3 can be adjusted not only in parallel with the moving direction of the material strip 10, but also in the vertical direction to adapt to material strips 10 of different widths or optimize the tension distribution during the conveying process, thereby ensuring the conveying effect of the material strip 10 downstream.

[0053] Exemplarily, the adjustment method of the conveyor roller 3 can be achieved through manual adjustment or using an electric adjustment device, wherein the manual adjustment device is usually low in cost and relatively simple to install and maintain. Manual adjustment can provide direct tactile feedback, which helps the operator to fine-tune according to experience and feeling to achieve the desired position of the conveyor roller 3. In addition, manual adjustment does not rely on electricity, so it is applicable when there is no power supply or temporary adjustment is required; the electric adjustment device provides higher adjustment accuracy and repeatability than manual adjustment, and is particularly suitable for production lines with a high degree of automation. The electric adjustment device achieves fast and consistent adjustment through programming, reduces manual operation errors, and improves production efficiency. Electric adjustment can also be integrated into the control system of the entire production process to achieve remote monitoring and automatic control, thereby reducing labor intensity. This application does not limit the adjustment method of the conveyor roller 3.

[0054] To prevent the conveyor mechanism 2 from slipping during high-speed operation, the tension of the conveyor belt 22 can be increased to improve the friction of the conveyor belt, thereby preventing slipping. Alternatively, a high-strength conveyor belt 22 can be selected to improve its load-bearing capacity and fatigue strength, thereby reducing slipping caused by material weaknesses. Increasing the tension can significantly increase the friction between the conveyor belt 22 and the pulley, ensuring that the conveyor belt does not slip under high-speed operation or high loads, thereby improving transmission efficiency and stability. A high-strength conveyor belt 22 can withstand greater loads and is suitable for high-power or heavy-load applications without premature fatigue or damage. The use of high-strength materials can significantly extend the service life of the conveyor belt, reduce replacement frequency and maintenance costs, and improve production efficiency.

[0055] For details, please refer to Figure 4 , Figure 4 for Figure 3 Another structural schematic diagram of the material strip die-cutting device 100 (transmitter roller 3 omitted) in the drawing can also be realized by setting the conveyor belt 22 as a synchronous belt. The conveyor mechanism 2 also includes a first synchronous pulley 25 and a second synchronous pulley 26. The first synchronous pulley 25 and the second synchronous pulley 26 are rotatably connected to the vacuum seat 21, and the synchronous belt is in transmission connection with the first synchronous pulley 25 and the second synchronous pulley 26. The synchronous belt is an industrial belt used to transmit power and motion. It combines the flexibility of the belt with the precise synchronization characteristics of the gears. Compared with the traditional belt, the synchronous belt has teeth on the inside, and these teeth match the teeth on the synchronous pulley to achieve non-slip drive. The synchronous pulley is a wheel used in conjunction with the synchronous belt. Its outer edge has precise teeth corresponding to the teeth of the synchronous belt. The synchronous pulley transmits power by engaging with the teeth of the synchronous belt.

[0056] Among them, the coordinated use of synchronous belts and synchronous pulleys can ensure precise synchronous transmission, avoid the slippage that may occur in the traditional belt transmission process, and ensure the precise positioning and speed stability of the material belt 10 during the transmission process; the synchronous belt has high transmission efficiency and low loss, which can significantly reduce energy consumption. At the same time, compared with chain transmission, the synchronous belt has less wear and tear, and the maintenance cost and frequency are relatively low; due to the high precision and stability of the synchronous belt transmission, the production line can be maintained at a higher speed, thereby improving the overall production efficiency.

[0057] It should be noted that the material of the synchronous belt can be rubber, polyester or steel wire rope, etc., which have high strength, wear resistance, oil resistance, corrosion resistance and electrochemical resistance. This application does not limit the material of the synchronous belt.

[0058] In some embodiments, see Figure 4 and Figure 5 , Figure 4The structural diagram of the material strip die-cutting device (the conveyor belt 22 is omitted), the conveying mechanism 2 also includes an adsorption plate 27, the adsorption plate 27 is provided with a plurality of connecting holes 271, at least a part of the connecting holes 271 is connected to the first vacuum chamber 23, at least a part of the connecting holes 271 is connected to the second vacuum chamber 24, the connecting holes 271 are arranged toward the conveyor belt 22, and the conveyor belt 22 is provided with a plurality of adsorption holes 221.

[0059] The multiple connecting holes 271 on the adsorption plate 27 can achieve precise adsorption and separation of the cut material strip 10 and the waste material according to the different stages of material transmission through the independent control of the first vacuum chamber 23 and the second vacuum chamber 24, thereby ensuring the accuracy of material processing. The connecting holes 271 are aligned with the adsorption holes 221 on the conveyor belt 22 to ensure the stability of the material strip 10 during transmission, prevent material damage caused by shaking or deviation, and ensure stability.

[0060] Optionally, the adsorption surface of the adsorption plate 27 is spaced apart from the portion of the conveyor belt 22 corresponding to the adsorption surface of the adsorption plate 27. The spacing can reduce the wear between the conveyor belt 22 and the adsorption plate 27 during operation, thereby increasing the service life of the conveyor belt 22. The conveyor belt 22 is spaced apart from the adsorption plate 27, which will reduce the adsorption force provided by the first vacuum chamber 23 and the second vacuum chamber 24 to the conveyor belt 22. In order to ensure the adsorption force provided by the first vacuum chamber 23 and the second vacuum chamber 24 to the conveyor belt 22 and reduce unnecessary vacuum consumption, the adsorption surface of the adsorption plate 27 is the side of the portion of the conveyor belt 22 close to the surface where the material belt 10 and waste are adsorbed.

[0061] Optionally, the conveying mechanism 2 also includes a first side block 28 and a second side block 29, which are arranged at both ends of the adsorption plate 27 along the width direction of the adsorption plate 27, and the first side block 28 and the second side block 29 are used to limit the conveyor belt 22. First, the first side block 28 and the second side block 29 are used to block the gap between the vacuum seat 21 and the conveyor belt 22, reducing the possibility of air leakage from the side into the first vacuum chamber 23 and the second vacuum chamber 24, ensuring that the vacuum degree in the vacuum chamber can act on the material more effectively, enhancing the adsorption force, and at the same time reducing the working intensity and energy consumption of the vacuum pump caused by leakage, improving the energy utilization efficiency of the production process, and reducing production costs; secondly, the first side block 28 and the second side block 29 are arranged at both ends of the adsorption plate 27 along the width direction of the adsorption plate 27, which can ensure that the material is transmitted along a predetermined straight path. The first side block 28 and the second side block 29 are respectively fixed at both ends of the adsorption plate 27 to form a boundary to prevent the material from being laterally offset during the transmission process, thereby ensuring the guidance and precise positioning of the material.

[0062] In some embodiments, see Figure 5 In order to better ensure that the conveyor belt 22 adsorbs waste, the multiple adsorption holes 221 include a first adsorption hole group 2211 and a second adsorption hole group 2212. The first adsorption hole group 2211 and the second adsorption hole group 2212 are arranged along the width direction of the conveyor belt 22. The first adsorption hole group 2211 is used to adsorb waste, and the second adsorption hole group 2212 is used to adsorb the material belt 10.

[0063] The first adsorption hole group 2211 is set corresponding to the waste material, and the second adsorption hole group 2212 is set corresponding to the material belt 10, so that the conveyor belt 22 can provide different adsorption effects for the waste material and the material belt 10 through the same adsorption force. The high adsorption force of the first adsorption hole group 2211 can firmly fix the waste material to prevent it from moving during the transmission process, while the lower adsorption force of the second adsorption hole group 2212 can ensure the stable transmission of the material belt 10, while avoiding surface damage or deformation caused by excessive adsorption.

[0064] Specifically, the first adsorption hole group 2211 includes a plurality of first adsorption holes 221A spaced apart along the feeding direction, and the second adsorption hole group 2212 includes a plurality of second adsorption holes 221B spaced apart along the feeding direction. First, the first adsorption hole 221A has a larger area, so that the first adsorption hole group 2211 can provide a stronger adsorption force, and the stronger adsorption force can ensure the adsorption effect on the waste. The area of ​​the second adsorption hole 221B is smaller than that of the first adsorption hole 221A, which can enable the material strip 10 to be smoothly conveyed and reduce the influence of the adsorption force on the tabs on the material strip 10.

[0065] For example, in order to achieve that the area of ​​the first adsorption hole 221A is larger than that of the second adsorption hole 221B, the first adsorption hole 221A and the second adsorption hole 221B are circular holes, and the diameter of the first adsorption hole 221A is larger than that of the second adsorption hole 221B. The circular holes provide uniform adsorption force in all directions, ensuring that the adsorption object is uniformly supported and positioned at any position on the surface, avoiding displacement or rotation caused by uneven adsorption force, and the edge stress distribution of the circular holes is relatively uniform, which can reduce stress concentration, thereby improving the structural strength and durability of the conveyor belt; the method of manufacturing circular holes is simpler and the cost is relatively low. The first adsorption hole 221A can also be set as a waist hole, and the second adsorption hole 221B can be set as a circular hole, please refer to Figure 4 The waist hole provides a larger adsorption area in the long axis direction, which means that the adsorption force is stronger in this direction, and the shape of the waist hole can help disperse the local pressure of the workpiece on the adsorption hole, especially when the workpiece has an irregular shape or protruding parts. This can reduce the stress concentration at the edge of the adsorption hole and improve the durability of the adsorption surface.

[0066] Optionally, the suction surface of the first vacuum chamber 23 and the suction surface of the second vacuum chamber 24 are in the same plane. That is, the conveying mechanism 2 no longer has a vertical section and an inclined section. The vertical section and the inclined section in the related art are intended to increase the angle between the material belt 10 and the waste material during separation, so as to completely separate the material belt 10 and the waste material. However, the conveying mechanism 2 in the present application does not need to have an inclined section to increase the angle between the material belt 10 and the waste material during separation. If an inclined section is provided, the second vacuum chamber 24 is required to provide additional suction force to overcome the influence of gravity on the waste material, so that the second vacuum chamber 24 needs to provide additional suction force, which increases energy consumption.

[0067] In order to completely separate the waste from the conveyor belt 22, in some embodiments, see Figure 5 The strip die-cutting device 100 also includes a stripper plate 4, located downstream of the conveyor roller 3. The stripper plate 4 is fixed to the vacuum seat 21, with one end close to the conveyor belt 22 for suctioning the surface of the strip 10. The stripper plate 4 is used to strip waste material from the conveyor belt 22. The stripper plate 4 is designed to strip waste material from the conveyor belt 22 after cutting. When the conveyor belt 22 passes over the stripper plate 4, the special angle and position of the stripper plate 4 effectively separate the waste material without affecting the continuous transmission of the conveyor belt 22. This prevents damage to the conveyor belt 22 or mixing of waste material with the strip 10 due to incomplete separation, reduces material loss, and improves the yield rate.

[0068] Optionally, in order to ensure that the conveyor belt 22 will not be affected by the waste and dust conveyed by the previous batch when conveying the material belt 10, a blowing duct can be set downstream of the stripping plate 4, and air can be blown onto the conveyor belt 22 through the blowing duct to blow off the dust on the conveyor belt 22. The blowing duct cleans the conveyor belt through the airflow, avoiding the wear or damage to the conveyor belt or the adsorption surface caused by physical contact, and the contactless cleaning method reduces the friction between components, reduces the maintenance frequency and cost, and can also be provided downstream of the stripping plate 4. The brush roller 5 can roll the surface of the conveyor belt 22 used to adsorb the material belt 10. A waste suction pipe 6 is also provided downstream of the brush roller 5. The waste suction pipe 6 can transfer the waste stripped from the conveyor belt 22 by the stripping plate 4 and the dust brushed by the brush roller 5 through adsorption force. Among them, the brush roller 5 can effectively remove adhesions, dust or other residual substances on the surface of the conveyor belt 22, ensuring the cleanliness of the conveyor belt 22, and the rolling brush action of the brush roller 5 can also cooperate with the stripping plate 4 to better peel off the waste from the conveyor belt 22, reducing the impact of the waste on the transmission of the conveyor belt 22; the waste suction pipe 6 transmits waste and dust through adsorption force, which can prevent them from floating in the working environment, reducing pollution to the working environment, and is also beneficial to maintaining the cleanliness of equipment and working areas; and by setting up the waste suction pipe 6, waste and dust can be centrally processed, which is convenient for subsequent environmental protection treatment, such as recycling or compliant disposal, and reducing direct pollution to the environment.

[0069] In some embodiments, the driving force of the second synchronous pulley 26 and the brush roller 5 can be achieved by setting two motors connected to the second synchronous pulley 26 and the brush roller 5 respectively. Each motor can independently control the components it drives, which means that the speed and direction of the second synchronous pulley 26 and the brush roller 5 can be adjusted independently, providing more precise control to adapt to different production requirements or cleaning needs; and the two motors can respectively adjust the speed according to the optimal operating state of their driven components. For example, the second synchronous pulley 26 may need to run stably at high speed, while the brush roller 5 may need to run at low speed but with high torque. Independent driving can achieve optimal efficiency respectively; or refer to Figure 5 The transmission mechanism 2 also includes a drive motor 210, which is connected to the second synchronous pulley 26 to drive the second synchronous pulley 26 to rotate, and the drive motor 210 is connected to the brush roller 5 to drive the brush roller 5 to rotate.

[0070] Specifically, the drive motor 210 is connected to the brush roller 5 through the first transmission wheel 51, the second transmission wheel 52 and the transmission belt 53. The drive motor 210 is connected to the second synchronous pulley 26 to drive the second synchronous pulley 26 to rotate. The first transmission wheel 51 is connected to the second synchronous pulley 26 and the first transmission wheel 51 is coaxial with the second synchronous pulley 26. The drive motor 210 drives the second synchronous pulley 26 and the first transmission wheel 51 to rotate around the same motor shaft at the same time. The second transmission wheel 52 is connected to the first transmission wheel 51 through the transmission belt 53. The second transmission wheel 52 is connected to the brush roller 5. The drive motor 210 drives the second synchronous pulley 26 and the first transmission wheel 51 to rotate. The rotation of the first transmission wheel 51 drives the second transmission wheel 52 to rotate through the transmission belt 53, and the second transmission wheel 52 drives the brush roller 5 to rotate.

[0071] Among them, the drive motor 210 drives the second synchronous pulley 26 and the brush roller 5 to rotate, reducing the number of motors and reducing the energy consumption of the entire system during startup, operation and shutdown. At the same time, it reduces the complexity and maintenance cost of the equipment and improves the overall energy efficiency and production efficiency; the use of single motor control simplifies the layout and design of the control system, reduces the complexity of the control loop, makes the response speed of the entire system faster, the control is more precise, and can better adapt to the high-speed operation requirements of the production line.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A strip die-cutting device, characterized in that: include: A die-cutting mechanism, the die-cutting mechanism being arranged on the transmission path of the material strip and being used for cutting the surface of the material strip to form tabs; A conveying mechanism, wherein the conveying mechanism is arranged downstream of the die-cutting mechanism along the feeding direction of the material belt, the conveying mechanism includes a vacuum seat and a conveyor belt arranged on the vacuum seat, the vacuum seat is provided with a first vacuum cavity and a second vacuum cavity, the first vacuum cavity and the second vacuum cavity are arranged along the feeding direction of the material belt, the first vacuum cavity is used to provide the conveyor belt with an adsorption force for adsorbing the cut material belt and waste materials, and the second vacuum cavity is used to provide the conveyor belt with the adsorption force for adsorbing waste materials, so that the conveyor belt can convey the cut material belt and the waste materials formed by cutting, the first vacuum cavity is connected to a first negative pressure source, and the second vacuum cavity is connected to a second negative pressure source; A conveying roller is provided close to the conveying belt and is used to convey the cut material belt downstream.

2. The strip die-cutting device according to claim 1, characterized in that: The adsorption force provided by the first vacuum chamber is greater than the adsorption force provided by the second vacuum chamber.

3. The strip die-cutting device according to claim 1, characterized in that: The first vacuum chamber and the second vacuum chamber are spaced apart along the feeding direction of the material belt, and the conveying roller is located at the interval between the first vacuum chamber and the second vacuum chamber.

4. The strip die-cutting device according to claim 1, characterized in that: The conveyor belt is a synchronous belt, and the conveying mechanism also includes a first synchronous pulley and a second synchronous pulley. The first synchronous pulley and the second synchronous pulley are rotatably connected to the vacuum seat, and the synchronous belt is transmission-connected to the first synchronous pulley and the second synchronous pulley.

5. The strip die-cutting device according to claim 4, characterized in that: The conveying mechanism also includes an adsorption plate, which is provided with a plurality of connecting holes, at least a portion of the connecting holes is connected to the first vacuum chamber, at least a portion of the connecting holes is connected to the second vacuum chamber, the connecting holes are arranged toward the conveyor belt, and the conveyor belt is provided with a plurality of adsorption holes.

6. The strip die-cutting device according to claim 5, characterized in that: The adsorption surface of the adsorption plate and the portion of the conveyor belt corresponding to the adsorption surface of the adsorption plate are spaced apart.

7. The strip die-cutting device according to claim 6, characterized in that: The conveying mechanism also includes a first side block and a second side block, which are arranged at both ends of the adsorption plate along the width direction of the adsorption plate, and the first side block and the second side block are used to limit the conveyor belt.

8. The strip die-cutting device according to claim 5, characterized in that: The plurality of adsorption holes include a first adsorption hole group and a second adsorption hole group, the first adsorption hole group and the second adsorption hole group are arranged along the width direction of the conveyor belt, the first adsorption hole group is used to adsorb the waste, and the second adsorption hole group is used to adsorb the material belt.

9. The strip die-cutting device according to claim 8, characterized in that: The first adsorption hole group includes a plurality of first adsorption holes spaced apart along the feeding direction, and the second adsorption hole group includes a plurality of second adsorption holes spaced apart along the feeding direction.

10. The strip die-cutting device according to claim 9, characterized in that: The first adsorption hole is a waist hole, and the second adsorption hole is a round hole.

11. The strip die-cutting device according to claim 1, characterized in that: The adsorption surface of the first vacuum chamber and the adsorption surface of the second vacuum chamber are located in the same plane.

12. The strip die-cutting device according to claim 1, characterized in that: The strip die-cutting device also includes a stripping plate, which is located downstream of the conveying roller. The stripping plate is fixed to the vacuum seat and one end of the stripping plate is close to the conveyor belt for adsorbing the surface of the strip. The stripping plate is used to strip the waste material on the conveyor belt.

13. The strip die-cutting device according to claim 12, characterized in that: The material strip die-cutting device further comprises a brush roller, which is located downstream of the stripping plate and can roll brush the surface of the conveyor belt for adsorbing the material strip.

14. The strip die-cutting device according to claim 13, characterized in that: The conveying mechanism further includes a driving motor, which drives the conveyor belt to rotate. The driving motor is in transmission connection with the brush roller to drive the brush roller to rotate.

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