Positioning mechanism capable of preventing air bag from being adhered during accurate cutting

Abstract

The utility model discloses a positioning mechanism for preventing from sticking an air bag during accurate cutting, which is mounted on the side surface of an accurate cutting station and comprises a positioning part, a guide part and a cooling part, the positioning part is connected with a driving mechanism, one side of the guide part is connected with the positioning part, the other side of the guide part is connected with the cooling part, and the edge of one side, far away from the positioning part, of the cooling part is in contact with the air bag. The cooling part is made of a heat conduction material, and cooling liquid is contained in the cooling part. According to the utility model, the cooling part is arranged on one side of the guide part, so that the cooling and hardening speed of a packaging position after fine sealing can be effectively accelerated, and the occurrence that an air bag is adhered to a fine cutting station is prevented, thereby effectively solving the problem of poor sealing caused by PP (Polypropylene) accumulation at a fine cutting edge, and improving the packaging quality of the soft package lithium ion battery.

Description

Technical Field

[0001] The utility model relates to a positioning mechanism for preventing air bags from sticking during precision cutting, and belongs to the technical field of lithium battery preparation. Background Art

[0002] Lithium batteries are widely used in various fields due to their large capacity, excellent cycle performance, and high environmental friendliness. Using lithium-ion batteries to power devices has become a mainstream trend. Among the various lithium-ion battery packaging methods, soft-pack lithium-ion batteries have become the mainstream due to their superior safety, lighter weight for the same capacity, and higher capacity within the same size specifications. For soft-pack lithium-ion batteries, the stability of their heat seals significantly impacts battery performance. Poor seals can lead to battery bulging and leakage, compromising battery safety. The soft-pack battery packaging process generally consists of three steps: primary sealing, secondary sealing, and final cutting, which typically operate in a continuous manner. During the final cutting process, the softened PP adhesive often adheres to the cutter blade due to a short heat seal cooling time, compromising cutting quality. This can eventually cause the softened PP adhesive to adhere to the battery and be carried over to the next step, leading to issues such as abnormal folding or leakage at the soft-pack seal. Therefore, ensuring that the soft-pack seals are cooled and sealed properly during the final cutting process and preventing accumulation at the final cutting edge has become a critical technical challenge that needs to be addressed. Utility Model Content

[0003] The utility model aims to provide a positioning mechanism for preventing air bags from sticking during precision cutting.

[0004] The technical solution to achieve the purpose of the utility model is: a positioning mechanism for preventing air bags from sticking to the tape during precision cutting, which is installed on the side of the precision cutting station and includes a positioning part, a guide part and a cooling part. The positioning part is connected to the driving mechanism, one side of the guide part is connected to the positioning part, and the other side is connected to the cooling part. The edge of the cooling part away from the positioning part is in contact with the air bag. The cooling part is made of heat-conducting material and contains coolant inside.

[0005] The utility model is provided with a cooling part on one side of the guide part, which can effectively accelerate the cooling and hardening speed of the packaging position after fine sealing, prevent the occurrence of air pockets at the fine cutting station, thereby effectively solving the problem of poor sealing caused by PP accumulation at the fine cutting edge, and improving the packaging quality of soft-pack lithium-ion batteries.

[0006] Further or optionally, the cooling portion is a through hole, the coolant is placed in the through hole, and both sides of the through hole are sealed with caps; this situation does not involve coordination between devices, has good mobility, and is suitable for small-scale single-machine sealing.

[0007] Further or optionally, in order to increase the cooling speed and realize continuous and rapid cooling, the cooling part adopts a continuous cooling structure, and a circulating cooling device is connected to both sides of the through hole.

[0008] Further or optionally, in order to improve positioning accuracy, a sliding positioning groove is further provided on the positioning portion.

[0009] Further or optionally, in order to prevent static electricity from affecting the surface charge of the PP bag, aluminum alloy is used, and the surface of the aluminum metal material is oxidized.

[0010] Further or optionally, in order to improve the sealing performance of the transverse through hole and prevent the coolant from leaking and contaminating the PP film, the guide portion and the cooling portion are formed by an integrated casting process.

[0011] By adopting the above technical solution, the utility model has the following beneficial effects:

[0012] (1) The present invention sets a cooling part on one side of the guide part, which can effectively accelerate the cooling and hardening speed of the packaging position after fine sealing, prevent the occurrence of air pockets in the fine cutting station, and effectively solve the problem of poor sealing caused by PP accumulation at the fine cutting edge, thereby improving the packaging quality of soft-pack lithium-ion batteries.

[0013] (2) The cooling part of the present invention is provided with injection holes on both sides, and sealing plug caps are provided at the openings of the injection holes. Different types of coolant can be selected according to needs during use. The sealing plug caps can effectively prevent the coolant from leaking, and the use is highly flexible.

[0014] (3) The through hole of the utility model is connected to a circulating cooling device on both sides, which can meet the needs of large-scale rapid cooling.

[0015] (4) The guide portion of the present invention is provided with a sliding positioning groove, which can effectively adapt to soft-pack batteries of various sizes during the fine sealing process and has high flexibility for batteries of various specifications.

[0016] (5) The cooling part metal of the utility model adopts an oxidation insulation treatment process, and its surface has a dense oxide film, which can prevent static electricity from affecting the surface charge of the PP bag and causing fluctuations in battery quality.

[0017] (6) The guide part and cooling part of the utility model adopt an integrated casting process, and the transverse through hole has good sealing performance, which can effectively prevent the coolant from leaking and contaminating the PP film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein

[0019] Figure 1 It is a structural diagram of the present utility model.

[0020] The reference numerals in the accompanying drawings are: positioning part 1, guiding part 2, cooling part 3. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0025] In the description of the embodiments of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The present invention is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the scope of protection of the present invention.

[0027] (Example 1)

[0028] See Figure 1 , a positioning mechanism for preventing air bags from sticking during precision cutting in this embodiment is installed on the side of the precision cutting station, and includes a positioning part 1, a guide part 2 and a cooling part 3. The guide part 2 is provided on the side of the positioning part 1, and a long strip cooling part 3 is provided on the side of the bottom surface close to the precision cutting station away from the guide part. A cooling pipe is installed in the cooling part 3, wherein the positioning part 1 replaces the traditional bakelite material with an aluminum alloy material, and the surface of the aluminum metal material is oxidized.

[0029] When in use, place the soft-pack battery on the precision cutting station, press the guide part 2 on the edge of the position where the soft-pack battery is to be precision cut, place the cooling tube on the blade, and cut after the soft-pack battery PP is completely solidified.

[0030] In order to make the positioning mechanism adaptable to soft-pack batteries of different specifications, a sliding positioning groove is provided on the guide part 2; the sliding positioning groove is fixed with a positioning screw. When in use, the position of the sliding positioning groove is adjusted according to the size of the soft-pack battery, and then the screw is tightened to complete the fixation of the soft-pack battery; in order to improve the fixing efficiency, the sliding positioning groove can also be fixed with a snap device.

[0031] Liquid injection holes are provided on both sides of the cooling part 3, and sealing plug caps are provided at the openings of the liquid injection holes 3. The specific heat capacity of the coolant can be selected according to the PP cooling speed. The sealing plug caps can be replaced with sealing covers as long as the coolant can be placed in the cooling pipe without overflowing.

[0032] In order to improve the adaptability of the positioning mechanism of the utility model for preventing precision cutting of sticky tape air bags to a faster production cycle, the inlet and outlet of the cooling pipe of the cooling part 3 are connected to a circulating liquid cooling device.

[0033] In order to prevent the cooling tank from leaking, the guide portion 2 and the cooling portion 3 are cast in one piece.

[0034] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positioning mechanism for preventing air pockets from sticking during precision cutting, characterized in that: It is installed on the side of the precision cutting station and includes a positioning part (1), a guide part (2) and a cooling part (3). The positioning part (1) is connected to the driving mechanism, one side of the guide part (2) is connected to the positioning part (1), and the other side is connected to the cooling part (3). The edge of the cooling part (3) away from the positioning part is in contact with the air bag. The cooling part (3) is made of heat-conducting material and contains cooling liquid.

2. A positioning mechanism for preventing precision cutting of adhesive tape air bags according to claim 1, characterized in that: The cooling portion (3) is a through hole, and the cooling liquid is placed in the through hole. Both sides of the through hole are sealed with caps.

3. A positioning mechanism for preventing precision cutting of adhesive tape air bags according to claim 2, characterized in that: The cooling part adopts a continuous cooling structure, and both sides of the through hole are connected with circulating cooling devices.

4. A positioning mechanism for preventing precision cutting of adhesive tape air bags according to claim 1, characterized in that: The positioning portion (1) is also provided with a sliding positioning groove.

5. The positioning mechanism for preventing precision cutting of adhesive tape air bags according to claim 1, characterized in that: The cooling part (3) is made of aluminum alloy, and the surface of the aluminum metal material is oxidized.

6. A positioning mechanism for preventing precision cutting of adhesive tape air bags according to claim 1, characterized in that: The guide portion (2) and the cooling portion (3) are produced using an integrated casting process.

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