Active metal belt packaging structure

Abstract

The utility model discloses an active metal belt packaging structure which comprises a winding core cylinder, a protective cylinder, an aluminum plastic sealing bag, a steel drum and a wood support which are sequentially arranged from inside to outside, the winding core cylinder is arranged in a metal belt coil, the protective cylinder is arranged on the outer side of the metal belt coil, transparent covers are arranged at the two ends of the protective cylinder respectively, the top end is a top transparent cover, and the bottom end is a bottom transparent cover. A top transparent cover is arranged at the bottom end, the top transparent cover and the bottom transparent cover are connected with the winding core cylinder through bolts, gaps are formed between the transparent covers and the metal strip coil and between the cylinder wall of the protective cylinder and the metal strip coil, the gaps form non-contact air buffer areas, the protective cylinder is arranged in an aluminum-plastic sealing bag, and the aluminum-plastic sealing bag is filled with inert gas. The aluminum-plastic sealing bag is plugged in the steel drum, a buffering protection layer is arranged on the inner side of the steel drum, a sealing cover is arranged on the top of the steel drum, and the steel drum is transversely placed on the wood support. The utility model has the advantages of higher strength and lower cost, and can ensure the quality of the active metal belt.

Description

Technical Field

[0001] The utility model belongs to the technical field of active metal strip production, and particularly relates to a packaging structure for an active metal strip. Background Art

[0002] Due to the relatively active chemical properties of active metal materials such as metallic lithium, it is extremely easy to undergo an oxidation reaction with water and even cause violent combustion. The metallic lithium strip used as the negative electrode of a primary lithium battery needs to be isolated from water vapor during storage and transportation and avoided being exposed to the air. Therefore, strict sealed packaging is necessary. Currently, for the packaging of wide-width and heavy-weight lithium strips, most use plastic reels, and an aluminum-plastic sealed bag is evacuated and filled with an inert gas as a soft package, and after soft packaging, it is placed in a sealed iron barrel. Its disadvantages are: 1) The packaging strength is low. During transportation and handling, the soft packaging material is prone to relative movements such as extrusion and impact, resulting in mechanical damage. Even some soft packaging materials are damaged under stress and gas leakage occurs, causing the surface of metallic lithium to be oxidized and affecting the use of metallic lithium as the battery negative electrode; 2) There is no protection for the tape reel inside the bag. During transportation and handling, under the continuous vibration and impact, the end face and outer side of the tape reel are prone to deformation. Seriously, it will cause the edge of the metal strip to be wavy, pits to appear on the outer side of the metal strip, and even make it difficult to peel off the metal strip, affecting the use of the active metal strip; 3) The lithium strip inside the soft package is wound on a plastic reel, and the lithium strip is in direct contact with the aluminum-plastic sealed bag, which is prone to oxidation, deterioration, and color change, affecting the product quality; 4) The material after soft packaging is placed in a steel barrel. When the external steel barrel is impacted and dented, there is no corresponding secondary protection, which will deteriorate the internal packaging environment and exacerbate the mechanical damage of the internal materials and the damage of the packaging materials; 5) A large number of plastic reels need to be used, and the repeated utilization rate of plastic reels is not high, resulting in a relatively high packaging cost. 6) The vibration and impact formed during long-term and long-distance transportation will reduce the product quality of active metals.

[0003] With the development of the lithium battery industry, the application of battery-grade metallic lithium strips is becoming more and more extensive, and international transportation is increasing. Therefore, during the production, transportation, and storage of batteries and metallic lithium strips, in order to prevent metallic lithium from being oxidized, ensure product quality, and reduce packaging costs, especially for ultra-wide and overweight lithium strips with a width exceeding 500 mm and a weight exceeding 50 kg, packaging with higher strength and lower cost is required. Summary of the Utility Model

[0004] The utility model provides a packaging structure for an active metal strip to solve the technical problems existing in the known technology. This structure has relatively high strength and low cost, and can ensure the quality of the active metal strip.

[0005] The technical solution adopted by the present utility model to solve the technical problems existing in the known technology is as follows: An active metal strip packaging structure, which includes a core cylinder, a protective cylinder, an aluminum-plastic sealed bag, a steel barrel, and a wooden pallet arranged in sequence from the inside to the outside. The core cylinder is arranged inside the metal strip coil, and the protective cylinder is arranged outside the metal strip coil. Transparent covers are respectively provided at both ends of the protective cylinder, with the top one being the top transparent cover and the bottom one being the bottom transparent cover. The top transparent cover and the bottom transparent cover are bolted to the core cylinder. Gaps are provided between the transparent covers and the metal strip coil, as well as between the barrel wall of the protective cylinder and the metal strip coil. These gaps form a non-contact air buffer zone. The protective cylinder is installed inside the aluminum-plastic sealed bag, and the inside of the aluminum-plastic sealed bag is filled with inert gas. The aluminum-plastic sealed bag is stuffed inside the steel barrel. A buffer protection layer is provided on the inner side of the steel barrel. A sealing cover is provided at the top of the steel barrel, and the steel barrel is placed horizontally on the wooden pallet.

[0006] The protective cylinder and the bottom transparent cover adopt an integrally formed structure.

[0007] The buffer protection layer has a two-layer structure, one layer is composed of EPE pearl foam, and the other layer is composed of corrugated cardboard.

[0008] The sealing cover is clamped tightly on the top of the steel barrel by a sealing ring. A sealing ring is provided between the sealing cover and the steel barrel, and the sealing ring is fixed to the sealing cover and the steel barrel by screws respectively.

[0009] The core cylinder is provided with an inner cylinder and an outer cylinder, and their ends are connected by a ring plate.

[0010] The core cylinder is made of 304 stainless steel, and the protective cylinder, the top transparent cover, and the bottom transparent cover are all made of 304 stainless steel.

[0011] The advantages and positive effects of the utility model are as follows: by adopting a structure in which the metal belt roll is loaded into a protective tube, the two ends are fixed with a transparent cover, and gaps are provided between the transparent cover and the metal belt roll, and between the tube wall of the protective tube and the metal belt roll, the high strength and volume limiting function of the protective tube can be used to prevent the flexible aluminum-plastic sealing bag from being damaged due to excessive deformation, to prevent the metal belt roll from directly hitting the aluminum-plastic sealing bag, to avoid direct contact between the metal belt roll and the aluminum-plastic sealing bag, and thus to prevent the aluminum-plastic sealing bag from being damaged due to the impact, thereby ensuring the safety of the active metal belt, and preventing the active metal surface from being oxidized, deteriorated, and discolored, thereby ensuring product quality; in the product placement area A non-contact air buffer zone is set up, and a non-contact air buffer zone with a gap is used to prevent the metal strip from being hit and ensure product quality when the metal strip roll produces the maximum design displacement under the action of the maximum impact force design value; the protective tube is encapsulated by an aluminum-plastic sealed bag filled with inert gas, and the inert gas and the aluminum-plastic sealed bag are used to block the active metal from contacting with air and water vapor, so as to prevent the active metal from oxidizing; the aluminum-plastic sealed bag is encapsulated by a steel barrel with a built-in buffer protective layer, and the high strength of the steel barrel and the flexibility of the buffer protective layer are used to combine rigidity and flexibility to prevent the packaging from being deformed, and protect the aluminum-plastic sealed bag from being damaged by bumps and extrusion during transportation and storage. At the same time, the use of a winding core can avoid the large-scale occupation of plastic reels; the packaging can be recycled and reused many times, which can reduce production costs and save resources. In summary, the utility model has high strength and low cost, can prevent the metal strip roll from collision and deformation during transportation and storage, can meet the needs of long-term and long-distance safe transportation and storage of active metal strip rolls, and can ensure the high-quality delivery of active metal strips. It is particularly suitable for ultra-wide and ultra-heavy active metal strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the protective tube of the utility model being loaded into an aluminum-plastic packaging bag using a lifting trolley;

[0014] Figure 3 This is a schematic diagram of the top transparent cover structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the protective tube and the bottom transparent cover of the utility model adopting an integrally formed structure;

[0016] Figure 5 This is a schematic diagram of the core drum structure of the utility model;

[0017] Figure 6 for Figure 5 Side view of.

[0018] In the figure: 1, metal strip coil; 2, core tube; 3, bolt; 4, bottom transparent cover; 5, top transparent cover; 6, aluminum-plastic packaging bag; 7, protective cylinder; 8, EPE pearl foam; 9, corrugated cardboard; 10, steel drum; 11, sealing ring; 12, sealing gasket; 13, sealing cover; 14, cantilever horizontal support rod. Detailed implementation manners

[0019] In order to further understand the inventive concept, features and effects of the present utility model, the following embodiments are exemplified and described in detail with reference to the accompanying drawings:

[0020] Please refer to Figures 1 to 6 , an active metal strip packaging structure, which includes a core tube 2, a protective cylinder 7, an aluminum-plastic sealed bag 6, a steel drum 10 and a wooden pallet (not shown in the figure) arranged in sequence from inside to outside. The core tube 2 is arranged inside the metal strip coil 1, and the protective cylinder 7 is arranged outside the metal strip coil 1. Transparent covers are respectively arranged at both ends of the protective cylinder 7, where the top end is the top transparent cover 5 and the bottom end is the bottom transparent cover 4. The top transparent cover 5 and the bottom transparent cover 4 are connected to the core tube 2 by bolts 3. Gaps are provided between the transparent cover and the metal strip coil 1, and between the barrel wall of the protective cylinder 7 and the metal strip coil 1. These gaps form a non-contact air buffer zone. Under the action of the maximum impact force design value, these gaps do not disappear, which can prevent the metal strip coil 1 from being impacted. The protective cylinder 7 is installed in the aluminum-plastic sealed bag 6, and the inside of the aluminum-plastic sealed bag 6 is filled with inert gas. The aluminum-plastic sealed bag 6 is stuffed into the steel drum 10. A buffer protection layer is provided on the inner side of the steel drum 10. A sealing cover 13 is provided at the top of the steel drum 10. The steel drum 10 is placed horizontally on the wooden pallet.

[0021] Directly winding the metal strip on the core tube to form a metal strip coil can reduce the occupation of plastic reels. At the same time, the core tube can be recycled multiple times, which can reduce production costs. Installing the metal strip coil into the protective cylinder and using the structure with transparent covers fixed at both ends can improve the packaging strength and prevent damage to the aluminum-plastic packaging bag caused by the mutual collision of metal strip coils during transportation and storage. Installing the protective cylinder containing the metal strip coil into the aluminum-plastic sealed bag, evacuating the air and filling it with inert gas for sealing can avoid the contact between the active metal and air and water vapor, and prevent the oxidation of the active metal. Installing the sealed aluminum-plastic sealed bag into the steel drum with a buffer protection material on the inner side for sealing, and the buffer protection material can protect the aluminum-plastic sealed bag from being damaged due to collision and extrusion during transportation and storage. Placing the sealed steel drum horizontally on the wooden pallet can prevent the metal strip coil from being deformed due to collision during transportation and storage.

[0022] In summary, for the above packaging structure, the metal strip coil is provided with multiple protections such as a protective cylinder, an aluminum-plastic packaging bag with vacuum pumping and inert gas filling, a buffer protection material, and a steel drum. During transportation and storage, the aluminum-plastic packaging bag will not be damaged, and it can protect the active metal from oxidation. At the same time, the use of a core cylinder can avoid the large occupation of plastic reels, the packaging can be recycled multiple times, which can reduce production costs and save resources.

[0023] In this embodiment, the protective cylinder 7 and the bottom transparent cover 4 adopt an integrally formed structure, which has good integrity and is convenient for packaging. The buffer protection layer has a two-layer structure. One layer is composed of EPE pearl foam cotton 8, and the other layer is composed of corrugated cardboard 9. The setting of the buffer protection layer can improve the strength of the packaging. During transportation and storage, it can prevent the packaged object from being damaged due to collision and extrusion, with reliable performance, economy and applicability. The sealing cover 13 is fastened to the top of the steel drum 10 by a sealing ring 11. A sealing ring 12 is provided between the sealing cover 13 and the steel drum 10. The sealing ring 11 is fixed to the sealing cover 13 and the steel drum 10 by screws respectively. This structure has high sealing reliability. The core cylinder 2 is provided with an inner cylinder and an outer cylinder, and the ends of the two are connected by a ring plate, which is light in weight and convenient to use. The core cylinder 2 is made of 304 stainless steel, and the protective cylinder 7, the top transparent cover 5 and the bottom transparent cover 4 are all made of 304 stainless steel. The use of stainless steel materials can prevent rust, avoid contamination of the metal strip, and facilitate cleaning after recycling.

[0024] The above packaging structure is not only applicable to battery-grade lithium metal strips, but also can be used for other active metal foil coils and alloy metal strip (foil) coils.

[0025] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose and scope protected by the claims of the present invention. All of these fall within the protection scope of the present invention.

Claims

1. An active metal strip packaging structure, characterized in that The structure includes a core cylinder, a protective cylinder, an aluminum-plastic seal bag, a steel drum and a wooden pallet which are arranged from the inside to the outside in sequence. The core cylinder is arranged inside the metal strip coil, and the protective cylinder is arranged outside the metal strip coil. Transparent covers are respectively arranged at both ends of the protective cylinder, with the top one being the top transparent cover and the bottom one being the bottom transparent cover. The top transparent cover and the bottom transparent cover are bolted to the core cylinder. Gaps are provided between the transparent cover and the metal strip coil, and between the barrel wall of the protective cylinder and the metal strip coil. These gaps form a non-contact air buffer zone. The protective cylinder is installed in the aluminum-plastic seal bag which is filled with inert gas inside. The aluminum-plastic seal bag is stuffed into the steel drum. A buffer protection layer is provided on the inner side of the steel drum. A sealing cover is provided at the top of the steel drum. The steel drum is horizontally placed on the wooden pallet.

2. The packaging structure of the active metal strip according to claim 1, wherein, The protective cylinder and the bottom transparent cover adopt an integrally formed structure.

3. The active metal strip packaging structure according to claim 1, characterized in that, The buffer protection layer has a two-layer structure. One layer is made of EPE pearl foam cotton, and the other layer is made of corrugated cardboard.

4. The packaging structure of the active metal strip according to claim 1, wherein The sealing cover is tightly clamped on the top of the steel drum by a sealing ring. A sealing ring is provided between the sealing cover and the steel drum. The sealing ring is fixed to the sealing cover and the steel drum respectively by screws.

5. The packaging structure of the active metal strip according to claim 1, wherein, The core cylinder is provided with an inner cylinder and an outer cylinder, and the ends of the two are connected by a ring plate.

6. The packaging structure of the active metal strip according to claim 1, wherein, The core cylinder is made of 304 stainless steel, and the protective cylinder, the top transparent cover and the bottom transparent cover are all made of 304 stainless steel.

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