Waste discharging device of battery pole piece cutting and chamfering die

Abstract

The utility model provides a waste discharging device of a battery pole piece cutting and chamfering die. The waste discharging device comprises a cutter body, a discharging ejector pin and a waste discharging device. A plurality of blowing holes are formed in the upper surface of the cutter main body; the discharging ejector pin is arranged on the cutter body and matched with the air blowing hole, and when the waste is blown up by the air blowing hole, the discharging ejector pin pushes the waste to move upwards at the same time, and the waste is smoothly separated from the cutter body. The waste discharging device is arranged above the cutter body and used for generating air exhaust to assist in removing waste and dust. According to the cutter, the air blowing holes are formed in the upper surface of the cutter body, waste and dust attached to the cutter can be blown up through airflow in the cutting process or after cutting, and attachment of the waste and the dust to the cutter is effectively reduced. The discharging ejector pin is arranged to be matched with the air blowing hole, when the waste is blown up by the air blowing hole, the discharging ejector pin pushes the waste to move upwards at the same time, it is guaranteed that the waste can be smoothly separated from the cutter body, and the waste removing efficiency is further improved.

Description

Technical Field

[0001] This application relates to the field of battery electrode sheet cutting dies, and particularly to a waste discharging device for a battery electrode sheet cutting and chamfering die. Background Art

[0002] The electrode sheet is mainly composed of components such as a substrate, an active material, a binder, and a conductive agent. The substrate is usually a material with good conductivity, such as a metal foil (such as copper foil, aluminum foil), etc.; the active material is a substance that participates in the electrochemical reaction during the charging and discharging process of the battery, such as lithium compounds (lithium manganate, lithium cobaltate, ternary materials, etc.) for the positive electrode and carbon materials (such as graphite) for the negative electrode; the binder is used to firmly attach the active material to the substrate; and the conductive agent is used to improve the conductivity of the electrode sheet.

[0003] During the production process of the battery electrode sheet, cutting and chamfering are key manufacturing steps. Due to limited equipment space and requirements for the processing position of the battery electrode sheet, the cutting die often needs to be inclined and an upward punching method from bottom to top is adopted. When dealing with waste materials and dust, some problems are indeed encountered, such as the waste removal device cannot be directly set vertically and needs to turn to discharge materials, and the large size of the waste materials is easy to adhere to the cutting tool, which will affect the removal effect of waste materials and dust. Utility Model Content

[0004] The purpose of this application is to provide a waste discharging device for a battery electrode sheet cutting and chamfering die with good waste and dust removal effects.

[0005] In order to achieve the above purpose, this application provides the following technical solutions:

[0006] A waste discharging device for a battery electrode sheet cutting and chamfering die, including a cutting tool main body, a discharging ejector pin, and a waste discharging device;

[0007] A plurality of air blowing holes are provided on the upper surface of the cutting tool main body;

[0008] The discharging ejector pin is arranged on the cutting tool main body. The discharging ejector pin cooperates with the air blowing holes. When the waste material is blown up by the air blowing holes, at the same time, the discharging ejector pin pushes the waste material upward, and the waste material smoothly separates from the cutting tool main body;

[0009] The waste discharging device is arranged above the cutting tool main body and is used to generate suction to assist in the removal of waste materials and dust.

[0010] Further, the discharging ejector pin includes a first ejector pin and a second ejector pin, and the length of the first ejector pin is less than the length of the second ejector pin.

[0011] Further, there are 2 first ejector pins respectively close to the chamfered edge part of the cutting tool main body, and there are 3 second ejector pins evenly distributed between the first ejector pins.

[0012] Further, the air blowing holes are located between the cutting edges of the cutter body.

[0013] Further, the battery pole piece cutting chamfering die includes an upper template and an upper die top plate. A first waste discharge groove is provided on the upper template, and a second waste discharge groove is provided on the upper die top plate. The waste discharging device discharges waste and dust from the first waste discharge groove and the second waste discharge groove by means of air extraction.

[0014] Further, the waste discharging device includes a waste discharge box. The top of the waste discharge box has a first opening, the bottom of the waste discharge box has a second opening, a waste discharge pipe is provided on the left side of the waste discharge box, the waste discharge pipe is used for connecting with an air extraction device, the waste discharge box communicates with the second waste discharge groove through the second opening, and a closable box cover is provided at the first opening.

[0015] Further, the box cover is hinged to one side of the waste discharge box, and a box cover closing switch is provided on the box cover and the waste discharge box.

[0016] Further, the box cover closing switch is a magnetic attraction switch.

[0017] Further, a sealing groove is provided at the edge of the first opening, and a sealing ring is provided in the sealing groove.

[0018] The beneficial effects of the present application are as follows:

[0019] (1) By providing a plurality of air blowing holes on the upper surface of the cutter body, during or after the cutting process, the waste and dust attached to the cutter can be blown up by air flow, effectively reducing the adhesion of waste and dust on the cutter.

[0020] (2) The arrangement of the discharging ejector pin cooperates with the air blowing holes. When the waste is blown up by the air blowing holes, the discharging ejector pin simultaneously pushes the waste to move upward, ensuring that the waste can smoothly separate from the cutter body, and further improving the waste removal efficiency. Description of the Drawings

[0021] Figure 1 It is a cross-sectional view of the battery pole piece cutting chamfering die provided by an embodiment of the present application;

[0022] Figure 2 It is a three-dimensional structure diagram of the cutter body, the first ejector pin and the second ejector pin in the waste discharging device of the battery pole piece cutting chamfering die provided by an embodiment of the present application;

[0023] Figure 3 It is a cross-sectional view of the cutter body, the first ejector pin and the second ejector pin in the waste discharging device of the battery pole piece cutting chamfering die provided by an embodiment of the present application;

[0024] Figure 4 A perspective view of the waste discharging device provided by an embodiment of the present application;

[0025] Explanation of reference numerals:

[0026] 1. Upper die; 2. Lower die; 3. Lower cutting tool assembly; 4. Guide post; 5. Driving device; 6. Waste discharging device;

[0027] 11. Upper die top plate; 12. Upper template;

[0028] 121. Upper cutting tool groove; 122. First waste discharging groove; 111. Second waste discharging groove;

[0029] 21. Lower die bottom plate; 22. Lower template; 23. Lower die blank holding plate;

[0030] 31. Lower cutting tool body; 32. First ejector pin; 33. Second ejector pin; 34. Air blowing hole;

[0031] 311. Chamfered cutting edge part; 312. Cutting edge part; 313. Guide part;

[0032] 61. Waste discharging box; 62. Waste discharging pipe; 63. Box cover; 64. Box cover switch; 65. Sealing groove; 66. Sealing ring; Detailed implementation manners

[0033] The terms used in the implementation manner part of the present application are only used to explain the specific embodiments of the present application, rather than aiming to limit the present application. The implementation manners of the embodiments of the present application will be described in detail below with reference to the drawings.

[0034] As Figure 1 shown, the battery pole piece cutting and chamfering die includes an upper die 1, a lower die 2, a lower cutting tool assembly 3, a guide post 4, and a driving device 5; the upper die has an upper die top plate 11 and an upper template 12 arranged at the bottom of the upper die top plate 11, and an upper cutting tool groove 121 is arranged on the upper template 12; the lower die is installed on the upper die in a liftable manner through the guide post 4, the lower die includes a lower die bottom plate 21, a lower template 22 installed on the lower die bottom plate 21, and a lower die blank holding plate 23, and the lower die blank holding plate 23 is installed on the lower template 22 through a blank holding plate guide post 4.

[0035] The lower cutting tool assembly 3 includes a lower cutting tool body 31. The bottom of the lower cutting tool body 31 is mounted on the lower die bottom plate 21. The top of the lower cutting tool body 31 sequentially passes upward through the corresponding through slots in the lower template 22 and the lower die pressure plate 23 to cooperate with the corresponding upper cutting tool slots 121 on the upper template 12 to cut and chamfer two adjacent battery electrodes; wherein, two sets of blade structures are symmetrically arranged on the lower cutting tool body 31. The two sets of blade structures are in a V shape. Each set of blade structures includes a chamfering blade part 311 and a cutting blade part 312. The chamfering blade part 311 and the cutting blade part 312 in the first set of blade structures cooperate to cut one of the battery electrodes and chamfer its cutting edge. At the same time, the chamfering blade part 311 and the cutting blade part 312 in the second set of blade structures cooperate to cut the other battery electrode and chamfer its cutting edge. The two sets of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery electrodes can be cut and chamfered simultaneously and independently.

[0036] The die mainly consists of an upper die 1, a lower die 2, and a lower cutting tool assembly 3. In the initial state, the upper die and the lower die are in the separated position, and the lower die pressure plate 23 is also in the uncompressed state. When the die moves to the cutting position, the lower die starts to rise. Before cutting, the lower die pressure plate 23 will first compress the battery electrode. This step is to ensure that the battery electrode will not move or be misaligned during the cutting process, thus ensuring the accuracy and consistency of cutting. The lower die continues to rise to align the blades of the lower cutting tool assembly 3 with the cutting tool slots of the upper die. Once aligned, the cutting blade part 312 starts to work to precisely cut the compressed battery electrode. At the same time, the chamfering blade part 311 chamfers the edge of the cut battery electrode to remove the sharp edge and improve the safety of the battery. After completing the cutting and chamfering operations on the adjacent sides of the two battery electrodes, the lower die starts to descend, and the lower die pressure plate 23 also releases the pressing force on the battery electrode. Subsequently, the cut and chamfered battery electrodes can be unloaded. The die returns to the initial state.

[0037] As Figure 1 shown, a waste discharging device for a battery electrode cutting and chamfering die includes a cutting tool body 31, a discharging ejector pin, and a waste discharging device 6; a plurality of air blowing holes 34 are provided on the upper surface of the cutting tool body 31; the discharging ejector pin is arranged on the cutting tool body 31 and cooperates with the air blowing holes 34. When the waste is blown up by the air blowing holes, at the same time, the discharging ejector pin pushes the waste upward, and the waste smoothly separates from the cutting tool body 31; the waste discharging device 6 is arranged above the cutting tool body 31 and is used to generate suction to assist in removing waste and dust.

[0038] As Figure 2As shown, in this embodiment, the blanking ejector pin includes a first ejector pin 32 and a second ejector pin 33, and the length of the first ejector pin 32 is less than that of the second ejector pin 33. The width of the waste battery electrode sheet in the middle is small, so a longer ejector pin (i.e., the second ejector pin 33) is required to ensure that the waste can be effectively ejected. The longer ejector pin can provide a greater acting force, enabling the waste to be smoothly discharged from the cutting blade structure. The width of the waste battery electrode sheet on the side is large and is relatively easier to be ejected. Therefore, a shorter ejector pin (i.e., the first ejector pin 32) can be used to complete this task. The shorter ejector pin is equally effective in ejecting the side waste and may be more flexible and easier to control.

[0039] As Figure 2 and Figure 3 shown, in this embodiment, there are 2 first ejector pins 32 respectively close to the chamfered blade part 311, and there are 3 second ejector pins 33 evenly distributed between the first ejector pins 32.

[0040] As Figure 2 and Figure 3 shown, in this embodiment, an air blowing hole 34 is further provided on the lower cutting blade body 31. The setting for the air blowing hole 34 to achieve the air blowing function mainly includes the following steps: First, prepare a stable air source, such as an air compressor, to provide compressed air; second, design an air flow channel on the lower die bottom plate 21 to ensure that it is connected to the air blowing hole 34 on the lower cutting blade body 31; then, tightly connect the air source and the air flow channel through an air pipe to achieve the air blowing function of the air blowing hole 34.

[0041] During the cutting process, a large amount of chips and dust will be generated. The air blowing hole 34 can effectively blow away these chips and dust by blowing out gas, keeping the cutting area clean. This not only helps to keep the working environment tidy but also avoids the damage of chips and dust to the equipment and operators.

[0042] In some cases, the cut material may adhere to the blade or the equipment due to static electricity or other reasons. The gas blown out by the air blowing hole 34 can effectively break this adhesion, ensuring that the cut material can smoothly fall off, thereby improving production efficiency.

[0043] As Figure 1 shown, in this embodiment, a waste discharging device 6 is provided on the upper die top plate 11, a first waste discharging groove 122 is provided on the upper template 12, and a second waste discharging groove 111 is provided on the upper die top plate 11. The waste discharging device 6 discharges the waste and dust of the battery electrode sheet from the first waste discharging groove 122 and the second waste discharging groove 111 by means of air extraction. Timely discharging the waste and dust by air extraction helps to maintain the cleanliness of the working area and reduce the impact of pollutants on the working environment and operators.

[0044] By setting up an air extraction device, the air extraction device may include equipment such as a suction fan or a vacuum pump. The air extraction device is connected to the waste discharging device 6 and is used to generate negative pressure suction. The air extraction device is connected to the first waste discharge groove 122 and the second waste discharge groove 111 through pipelines. When the air extraction device is started, it generates negative pressure at the waste discharge groove, attracting waste and dust to enter. The sucked waste and dust are transported through the pipeline to a designated collection container, such as a dust collection bag or a filter, thereby realizing the separation and collection of waste and dust.

[0045] As Figure 4 shown, in this embodiment, the waste discharging device 6 includes a waste discharge box 61. The top of the waste discharge box 61 has a first opening, the bottom of the waste discharge box 61 has a second opening, a waste discharge pipe 62 is provided on the left side of the waste discharge box 61, and the waste discharge pipe 62 is used to connect to the air extraction device. The waste discharge box 61 communicates with the second waste discharge groove 111 through the second opening, and a closable box cover 63 is provided at the first opening. The design of the waste discharge box 61 enables waste and dust to be centrally collected and managed, avoiding the scattering and accumulation of waste in the working area, thereby keeping the working environment clean.

[0046] The waste discharge box 61 communicates with the second waste discharge groove 111 through the second opening, ensuring that waste and dust can smoothly enter the waste discharge box 61 and avoiding secondary pollution during the working process.

[0047] The closable box cover 63 provided at the first opening enables the waste discharge box 61 to maintain a sealed state when waste does not need to be discharged, preventing the leakage and diffusion of waste, and also facilitating opening and cleaning when needed.

[0048] As Figure 4 shown, in this embodiment, the box cover 63 is hinged to one side of the waste discharge box 61, and a lid closing switch 64 is provided on the box cover 63 and the waste discharge box 61. The box cover 63 being hinged to one side of the waste discharge box 61 makes it very simple and convenient to open and close the box cover 63. The operator can easily access the inside of the waste discharge box 61 by flipping the box cover 63 for cleaning or maintenance. The setting of the lid closing switch 64 can ensure that the box cover 63 can closely fit on the waste discharge box 61 after closing, preventing the leakage of waste and dust. This design not only protects the working environment but also reduces the risk of the operator being exposed to potential harmful substances.

[0049] The lid closing switch is a magnetic attraction switch.

[0050] As Figure 4As shown, in this embodiment, a sealing groove 65 is provided at the edge of the first opening, and a sealing ring 66 is arranged in the sealing groove 65. By providing the sealing groove 65 and the sealing ring 66, the sealing performance of the waste discharge box 61 can be significantly enhanced. The sealing ring 66 can closely fit on the contact surface between the box cover 63 and the waste discharge box 61, effectively preventing gas and dust from leaking from the interface.

[0051] The working principle of the battery pole piece cutting chamfering die is as follows:

[0052] First of all, the battery pole piece cutting chamfering die as a whole is installed on the workbench, and in order to adapt to the compact installation space and specific processing technology, the die is inclined during installation. This inclined setting not only saves space but also enables the die to better cooperate with the production line for continuous operation.

[0053] When a cutting operation is required, the die first moves as a whole to the battery pole piece cutting position. At this time, the lower die is at the lowest position, the upper die and the lower die are in a separated state, and the lower die pressure plate 23 is also in an uncompressed state.

[0054] Then, the driving device 5 starts to operate. The driving device 5 includes components such as a driving motor 51, a driving lead screw 52, a driving nut seat 53, and a belt assembly, which work together to drive the lower die to move upward. Specifically, the driving motor 51 drives the driving lead screw 52 to rotate through the belt assembly, and the driving nut seat 53 rises as the lead screw rotates, thereby pushing the lower die bottom plate 21 and the lower template 22 and the lower die pressure plate 23 installed thereon to rise together.

[0055] Before cutting, the lower die pressure plate 23 will first press the battery pole piece. This step is to ensure that the battery pole piece will not move or be misaligned during the cutting process, thus ensuring the accuracy and consistency of cutting. As the lower die continues to rise, the cutting edge of the lower cutting knife assembly 3 gradually aligns with the cutting knife groove of the upper die.

[0056] The cutting edge part 312 of the cutting blade starts to work, precisely cutting the pressed battery pole piece. At the same time, the chamfering edge part 311 chamfers the edge of the cut battery pole piece to remove the sharp edge and improve the safety of the battery. During this process, the two sets of blade structures are symmetrically arranged to ensure that the adjacent sides of the two battery pole pieces can be cut and rounded simultaneously and independently.

[0057] After the cutting and chamfering operations are completed, the blanking ejector starts to work, cooperating with the air blowing holes 34 to eject the waste material from between the blades. The gas blown out from the air blowing holes 34 not only helps to eject the waste material, but also effectively blows away the chips and dust generated during the cutting process. The ejected waste material and the dispersed chips and dust are then quickly sucked away by the air extraction system of the waste discharging device 6. This step ensures that the cutting area remains clean and at the same time prevents the waste material and dust from affecting the subsequent processing. Through the above waste material cleaning process, it can be ensured that the cut material will not get stuck between the blades, thus maintaining the continuity and smoothness of the cutting operation. After the waste material cleaning is completed, the lower die starts to descend and reset. As the lower die resets, the lower die pressure plate 23 also releases the pressing force on the battery electrode sheet. Finally, the cut and chamfered battery electrode sheet can be unloaded.

[0058] Finally, as the mold returns to its initial state, a complete cutting and chamfering process is also completed. This design enables the mold to meet the requirements of an efficient and automated production line, improving production efficiency and cutting quality while reducing production costs and operation difficulties.

[0059] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0060] The device or element referred to in the embodiments of the present application or implied must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the embodiments of the present application. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically and precisely specified.

[0061] The terms "first", "second", "third", "fourth", etc. (if any) in the description of the specification, claims and the above drawings of the embodiments of the present application are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application described here, for example, can be implemented in an order other than those illustrated or described here. In addition, the terms "may include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features. And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A waste discharging device for a battery pole piece cutting and chamfering die, characterized in that: It includes a cutter body, a blanking ejector pin, and a waste discharging device; A plurality of air blowing holes are provided on the upper surface of the cutter body; The blanking ejector pin is arranged on the cutter body, and the blanking ejector pin cooperates with the air blowing holes. When the waste is blown up by the air blowing holes, at the same time, the blanking ejector pin pushes the waste to move upward, and the waste smoothly detaches from the cutter body; The waste discharging device is arranged above the cutter body and is used to generate suction to assist in removing waste and dust.

2. The waste material discharging device of a battery pole piece cutting and chamfering die according to claim 1, characterized in that: The blanking ejector pin includes a first ejector pin and a second ejector pin, and the length of the first ejector pin is less than that of the second ejector pin.

3. The waste discharging device of a battery pole piece cutting chamfering die according to claim 2, characterized in that: There are 2 first ejector pins respectively close to the chamfered cutting edge part of the cutter body, and 3 second ejector pins are evenly arranged between the first ejector pins.

4. The waste discharging device of a battery pole piece cutting chamfering die according to claim 1, characterized in that: The air blowing holes are located between the cutting edges of the cutter body.

5. The waste discharging device of a battery pole piece cutting chamfering die according to claim 1, wherein: The battery pole piece cutting chamfering die includes an upper template and an upper die top plate. A first waste discharging groove is provided on the upper template, and a second waste discharging groove is provided on the upper die top plate. The waste discharging device discharges waste and dust from the first waste discharging groove and the second waste discharging groove by means of suction.

6. The waste discharging device of a battery pole piece cutting and chamfering die according to claim 1, characterized in that: The waste discharging device includes a waste discharging box. The top of the waste discharging box has a first opening, the bottom of the waste discharging box has a second opening, a waste discharging pipe is arranged on the left side of the waste discharging box, and the waste discharging pipe is used to connect with a suction device. The waste discharging box is communicated with the second waste discharging groove through the second opening, and a coverable box cover is arranged at the first opening.

7. The waste material discharging device of a battery pole piece cutting and chamfering die according to claim 6, characterized in that: The box cover is hinged to one side of the waste discharging box, and a cover closing switch is arranged on the box cover and the waste discharging box.

8. The waste discharging device of a battery pole piece cutting chamfering die according to claim 7, characterized in that: The cover closing switch is a magnetic suction switch.

9. The waste discharging device of a battery pole piece cutting chamfering die according to claim 7, characterized in that: A sealing groove is arranged at the edge of the first opening, and a sealing ring is arranged in the sealing groove.

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