Lithium battery positive electrode pressing sheet cutting die

Abstract

The lithium battery positive electrode pressing piece cutting die comprises a main die, the main die is fixed to a base, a die cavity with an opening in the top is formed in the main die, a plurality of stamping dies are arranged at the bottom of the die cavity, and the lithium battery positive electrode pressing piece cutting die further comprises a baffle plate; the shielding plate is connected into the main die in a sliding mode so as to completely shield or open the stamping die, the shielding plate is driven by a driving device, and the driving device is fixed to a base. After raw materials are poured into the die cavity, a hydraulic machine is adopted for tabletting forming, the baffle plate is drawn out to expose the stamping die, and the baffle plate continues to be pressed downwards to complete cutting forming of the positive electrode.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of lithium battery positive electrode production, and particularly relates to a lithium battery positive electrode tabletting and cutting die. BACKGROUND

[0002] With the development of electric vehicles, electronic products and the like, the performance of lithium batteries is increasingly important, and the demand for lithium batteries is also increasing. As one of the important components, the production efficiency and product quality of lithium battery positive electrodes are also increasingly important.

[0003] In the production process of lithium battery positive electrodes, lithium sources and metal oxides need to be mixed uniformly at a certain ratio and then put into a tabletting die for compression molding. After compression molding and shearing, the production of lithium battery positive electrodes is completed. The above-mentioned method needs to be performed in two steps, which not only increases the equipment cost but also affects the production efficiency of the product. Since the volume of the lithium battery positive electrode tablet is small, if it is directly compressed into a tablet, the process requirements are strict, especially the weight precision of the raw materials, which is not conducive to improving the product quality.

[0004] Therefore, a new type of lithium battery positive electrode tabletting and cutting die is needed to solve the above-mentioned problems. CONTENT OF THE INVENTION

[0005] In order to solve the problems of the prior art, the application provides a lithium battery positive electrode tabletting and cutting die, which can further perform a stamping and cutting step after compression molding, and the stamping and cutting step is performed on the same die, thereby improving the production rhythm.

[0006] The technical effects achieved by the application are realized by the following scheme:

[0007] According to a first aspect of the application, a lithium battery positive electrode tabletting and cutting die is provided, which comprises a main die fixed to a base, a die cavity with a top opening is arranged in the main die, a plurality of stamping dies are arranged at the bottom of the die cavity, a shielding plate is slidably connected to the main die to completely shield or open the stamping dies, the shielding plate is driven by a driving device, and the driving device is fixed to the base.

[0008] According to the scheme, the shielding plate is completely inserted into the die cavity to shield the stamping dies. After the raw materials are poured into the die cavity, the tablet is formed by using a hydraulic machine, the shielding plate is extracted to expose the stamping dies, and the cutting and molding of the positive electrode is completed by further pressing.

[0009] Preferably, a plurality of die cavities are arranged on the main die, and the shielding plate can completely cover the bottoms of all the die cavities.

[0010] Through the scheme, the production of multiple lithium battery positive electrodes can be performed at the same time, thereby improving the production efficiency.

[0011] Preferably, a sliding groove is arranged in the middle of the main mold for the sliding of the shielding plate, and the sliding groove extends to the inner wall of the side of the mold cavity away from the driving device.

[0012] Through the scheme, the shielding plate is completely inserted into the mold cavity, and is supported on all sides, so that the strength during the pressing process is improved, and the shielding plate is prevented from being bent and damaged.

[0013] Preferably, the mold cavity penetrates through the main mold up and down, and the stamping mold is a mold penetrating through up and down and fixed to the base.

[0014] Through the scheme, the finished product and the edge material after stamping can fall out from the bottom, and are convenient to collect.

[0015] Preferably, a limiting plate is arranged on one side of the shielding plate, and the limiting plate is arranged perpendicularly to the shielding plate.

[0016] Through the scheme, the limiting plate can limit the position of the shielding plate.

[0017] Preferably, the driving device is a cylinder, and light rods are arranged on both sides of the shielding plate and arranged in parallel to the cylinder, and the light rods are slidingly connected to both sides of the main mold.

[0018] Through the scheme, the light rods play a role in limiting left and right, and the twisting of the shielding plate is prevented from damaging the piston rod of the cylinder.

[0019] Preferably, a containing groove is arranged in the middle of the main mold, the cylinder is connected to the bottom of the containing groove, the mold cavity is arranged on both sides of the containing groove, a groove matched with the containing groove is arranged on the shielding plate, and the width of the groove is greater than the width of the cylinder.

[0020] Through the scheme, the containing groove and the groove are arranged, so that the cylinder can completely enter the groove, which is helpful to reduce the width of the device and facilitate the installation on the operation table of the hydraulic machine.

[0021] According to one embodiment of the present application, the beneficial effects of the lithium battery positive electrode tablet pressing and cutting mold are that the raw materials in the plurality of mold cavities can be pressed and cut at the same time, the cutting can be completed without position conversion, the production rhythm is greatly improved, one oil press completes two processes, and the equipment cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a side view structural schematic diagram of a lithium battery positive electrode tablet cutting die in an embodiment of the present application.

[0024] Figure 2 It is Figure 1 a top view structural schematic diagram of a lithium battery positive electrode tablet cutting die.

[0025] Figure 3 It is Figure 2 a structural schematic diagram of a lithium battery positive electrode tablet cutting die when cutting.

[0026] Figure 4 It is Figure 2 a structural schematic diagram of a shielding plate.

[0027] Figure 5 It is Figure 2 a structural schematic diagram of a main die. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely in combination with specific embodiments and corresponding drawings. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] As Figures 1 to 5 shown, the lithium battery positive electrode tablet cutting die in an embodiment of the present application, the lithium battery positive electrode tablet cutting die, comprising a main die 200, the main die 200 is fixed to the base 100, the main die 200 is provided with a top opening die cavity 210, the bottom of the die cavity 210 is provided with a plurality of stamping dies 300, further comprising a shielding plate 310, the shielding plate 310 is slidingly connected to the main die 200 to completely shield or open the stamping die 300, the shielding plate 310 is driven by a driving device 320, the driving device 320 is fixed to the base 100.

[0030] According to the scheme of the embodiment, the shielding plate 310 is completely inserted into the mold cavity 210 to shield the stamping die 300. After the raw material is poured into the mold cavity 210, the finished product is formed by tabletting with a hydraulic machine, and then the driving device pulls out the shielding plate 310 to expose the stamping die 300, and continues to press to complete the cutting and forming of the positive electrode.

[0031] The mold cavity 210 is elliptical, and the larger mold cavity 210 can share the weight error of the raw material. A plurality of stamping dies 300 are distributed in each mold cavity 210, thereby completing the synchronous processing of a plurality of lithium battery positive electrode sheets. Compared with directly stamping in a smaller lithium battery positive electrode template, the product quality can be greatly improved, and there is no need to accurately control the feeding accuracy, which is convenient for production.

[0032] The base 100 is used to fix the main die 200 and is fixed to the workbench of the hydraulic machine. The bottom of the piston rod of the hydraulic machine is fixed with a die head matched with the mold cavity 210.

[0033] The base 100, the main die 200, and the shielding plate 310 are all made of carbon steel material, which has high strength and rigidity. The driving device 320 can be an oil cylinder, an air cylinder, or an electric cylinder.

[0034] In an embodiment of the present application, the main die 200 is provided with a plurality of mold cavities 210, and the shielding plate 310 can completely cover the bottoms of all the mold cavities 210. The production of a plurality of lithium battery positive electrodes can be simultaneously performed, thereby improving the production efficiency.

[0035] In an embodiment of the present application, a sliding groove 220 is formed in the middle of the main die 200 for the shielding plate 310 to slide in and out. The sliding groove 220 extends to the inner wall on the side away from the driving device 320. After the shielding plate 310 is completely inserted into the mold cavity 210, it is supported all around, which can improve the strength during the pressing process and avoid the bending damage of the stamping die 300.

[0036] In an embodiment of the present application, the mold cavity 210 penetrates through the main die 200 from top to bottom, and the stamping die 300 is a die penetrating through from top to bottom and fixed to the base 100. The finished product and the edge material after stamping can fall out from the bottom, which is convenient for collection.

[0037] In an embodiment of the present application, a limiting plate 330 is arranged on one side of the shielding plate 310, and the limiting plate 330 is perpendicular to the shielding plate 310. The limiting plate 330 can limit the position of the shielding plate 310.

[0038] In an embodiment of the present application, the driving device 320 is a gas cylinder, and light rods 331 are arranged on both sides of the shielding plate 310 in parallel with the gas cylinder. The light rods 331 are slidingly connected to both sides of the main die 200. The light rods 331 play a role in limiting left and right, which can avoid the damage of the twisting of the shielding plate 310 to the piston rod of the gas cylinder.

[0039] In an embodiment of the present application, the main mold 200 is provided with a receiving groove 201 in the middle, a cylinder is connected to the bottom of the receiving groove 201, the mold cavity 210 is divided into two parts on both sides of the receiving groove 201, the shielding plate 310 is provided with a groove 311 matched with the receiving groove 201, and the width of the groove 311 is greater than that of the cylinder. The arrangement of the receiving groove 201 and the groove 311 can make the cylinder completely enter the groove 311, which helps to reduce the width of the device and facilitate installation on the operating table of the hydraulic machine.

[0040] According to an embodiment of the present application, the beneficial effects of the lithium battery positive electrode tabletting and cutting mold are that the raw materials in multiple mold cavities can be tabletted and cut at the same time, the cutting can be completed without position conversion, the production rhythm is greatly improved, two processes are completed by one oil press, and the equipment cost is reduced.

[0041] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0042] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise. In addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they refer to the presence of a feature, step, operation, device, component, and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0044] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product, or device.

[0045] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the application as oriented in the drawing figures. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application. All such modifications and variations are considered to be within the scope of the present application.

[0046] In the detailed description above, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments can be used, and other changes can be made, without departing from the spirit or scope of the subject matter presented herein.

[0047] The preferred embodiments of the application are described above in detail. The application, however, is not limited to the specific embodiments described herein, but only by the claims. Numerous variations and modifications from the descriptions and figures are possible in light of the above teachings. It is therefore contemplated to fall within the scope of the present application that present this written description and claims can include other embodiments and implementations.

Claims

1. A lithium battery cathode tablet compression cutting die comprising a main die fixed to a base, said main die having a top open die cavity therein, characterized in that, The bottom of the cavity is provided with a plurality of stamping dies, and further comprises a shielding plate which is slidingly connected to the main mold to completely shield or open the stamping dies, and the shielding plate is driven by a driving device which is fixed to the base.

2. The lithium battery cathode tablet compression trim die of claim 1, wherein, The main mold is provided with a plurality of cavities, and the shielding plate can completely cover the bottom of all cavities.

3. The lithium battery cathode tablet compression trim die of claim 1, wherein, The middle part of the main mold is provided with a sliding groove for the shielding plate to slide in and out, and the sliding groove extends to the inner wall of the side of the cavity away from the driving device.

4. The lithium battery cathode tablet compression trim die of claim 3, wherein, The cavity extends through the main mold, and the stamping die is a through mold and is fixed to the base.

5. The lithium battery cathode tablet compression trim die of claim 3, wherein, One side of the shielding plate is provided with a limiting plate which is perpendicular to the shielding plate.

6. The lithium battery cathode tablet compression trim die of claim 1, wherein, The driving device is a cylinder, and both sides of the shielding plate are provided with a polished rod which is arranged in parallel with the cylinder and is slidingly connected to both sides of the main mold.

7. The lithium battery cathode tablet compression trim die of claim 6, wherein, The middle part of the main mold is provided with a containing groove, the cylinder is connected to the bottom of the containing groove, the cavities are arranged on both sides of the containing groove, the shielding plate is provided with a groove which is matched with the containing groove, and the width of the groove is greater than the width of the cylinder.

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