Novel die arrangement

Abstract

The utility model belongs to lithium ion battery technical field, concretely relates to a novel die head device, including die head, connecting block, connecting rod and gasket, the connecting block with the die head is linked through fixed screw, the middle second screw hole of connecting block is the threaded hole, the threaded hole bottom with the screw thread department of connecting rod links, the connecting rod sets up the flow channel hole top of gasket, the threaded place above connecting block is equipped with quick screw, the glue liquid pipeline of PE material is installed on quick screw, be equipped with the glue flow channel on gasket, the glue flow channel extends from original fixed screw hole place to coating edge. The die head device of the utility model carries out structure optimization and layout improvement on the basis of ordinary die head, need not purchase special glue dispensing die head or external glue dispensing equipment, only through the combination of connecting block, connecting rod and improved gasket, can realize the edge glue dispensing coating function of pole piece, effectively promoted the diversity of die head use.

Description

Technical Field

[0001] This utility model belongs to the field of lithium-ion battery technology, specifically relating to a novel mold head device. Background Technology

[0002] Lithium-ion batteries, with their advantages of high voltage, high specific energy, and long cycle life, are widely used in portable electronic devices, electric vehicles, and other fields, leading to increasingly stringent safety requirements. In lithium-ion battery production, the electrode coating process is a bottleneck, directly affecting battery performance. In particular, applying ceramic adhesive to the electrode tabs effectively prevents internal short circuits under extreme conditions such as needle penetration and compression, improving battery safety. Therefore, the stability of the adhesive coating process is crucial.

[0003] Currently, the mainstream process for electrode dispensing in the industry uses micrometer dies or external dispensing devices. However, such equipment is much more expensive than ordinary dies, and cleaning and changeover operations are cumbersome, increasing production costs and reducing equipment uptime and production completion rates due to frequent downtime. In existing technologies, ordinary dies (non-dispensing dies) cannot directly perform dispensing functions, requiring the purchase of specialized equipment, resulting in resource waste. Therefore, there is an urgent need to improve the structure of existing ordinary dies to enable dispensing functions, thereby increasing the versatility of die use, reducing costs, and improving production changeover speed. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of mold head to solve the technical problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel mold head device, comprising a mold head, a connecting block, a connecting rod, and a gasket. The connecting block is connected to the mold head by a fixing screw. The second screw hole in the middle of the connecting block is a threaded hole, and the bottom of the threaded hole is connected to the threaded part of the connecting rod. The connecting rod is disposed above the flow channel hole of the gasket. A quick-tightening screw is installed at the threaded part above the connecting block, and a PE adhesive channel is installed on the quick-tightening screw. The gasket is provided with an adhesive dispensing channel, which extends from the original fixing screw hole to the coating edge.

[0006] Preferably, the original gasket has three fixing holes on both sides, and the middle hole is improved to have a flow channel groove. The depth of the flow channel groove is half of the gasket, and the flow channel groove extends to the edge of the gasket opening, with a distance of 0.75mm from the edge of the gasket.

[0007] Preferably, the connecting rod has a through hole with a diameter of 8mm in the middle.

[0008] Preferably, a polytetrafluoroethylene gasket is installed when the connecting rod is connected to the middle of the mold head.

[0009] Preferably, it also includes a lower die head, which is provided with a slurry groove, and the lower die head is connected to the upper die head and the gasket by fixing screws.

[0010] The beneficial effects of this utility model are: This new die head device optimizes the structure and improves the layout based on the ordinary die head, eliminating the need to purchase a special dispensing die head or external dispensing equipment. It can achieve the function of dispensing and coating the electrode edge by simply combining the connecting block, connecting rod and improved gasket, effectively improving the versatility of the die head and enabling the ordinary die head to break through the traditional limitation of only being able to perform slurry coating, thus meeting diversified production needs.

[0011] Through simple and reasonable modifications, this device significantly reduces equipment procurement costs while ensuring the stability of dispensing and coating. It avoids time losses caused by changing different types of mold heads, improves production changeover speed and equipment uptime, and ensures both electrode quality control and effective production cost control. It provides an efficient and economical solution for the coating process in lithium-ion battery manufacturing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the gasket structure in this utility model; Figure 3 This is a diagram showing the working state of this utility model; Figure 4 for Figure 3 A diagram from another direction; Figure 5 This is a schematic diagram of the connecting rod in this utility model; Explanation of reference numerals in the attached figures: 1. Connecting block; 2. Connecting rod; 21. Through hole; 3. Upper die head; 4. Gasket; 41. Flow channel; 5. Lower die head. Detailed Implementation

[0013] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings and preferred embodiments.

[0014] like Figure 1 and Figure 2As shown, a novel die head device comprises a connecting block 1, a connecting rod 2, an upper die head 3, a gasket 4, and a lower die head 5. The connecting block 1 is connected to the upper die head 3 by fixing screws, with through holes at both ends for fixing, and the second screw hole in the middle is machined as a threaded hole. The upper end of the connecting rod 2 is connected to the threaded hole of the connecting block 1 by a thread, and a through hole 21 with a diameter of 8mm is provided in the middle, with the lower end aligned with the flow channel hole of the gasket 4; a polytetrafluoroethylene gasket is installed at the connection between the connecting rod 2 and the upper die head 3 for sealing.

[0015] The original gasket 4 had 3 fixing holes on each side. The middle hole was modified into a flow channel groove 41. The groove depth was half the thickness of the gasket. The flow channel extended from the hole to the edge of the gasket opening, with a distance of 0.75mm from the edge, to ensure that the adhesive accurately overflowed to the edge of the slurry during application.

[0016] The PE adhesive pipe is installed above the connecting block 1 via a quick-tight screw. The adhesive flows into the connecting block 1 through the pipe, and is then transported downwards through the through hole of the connecting rod 2 to the flow channel groove of the gasket 4, and finally flows out from the edge of the gasket 4, thus achieving electrode dispensing.

[0017] The lower die head 5 is equipped with a slurry tank for storing slurry, and is connected to the upper die head 3 and the gasket 4 by fixing screws to form a complete coating system.

[0018] Working principle: The device adds a connecting block 1 above the die head, transforming the original fixing screw holes into adhesive inlet channels. Threaded connections are used to seal and secure the components. Adhesive enters the connecting block 1 from a PE pipe via quick-connect screws, flows through the through-hole of the connecting rod 2 into the flow channel of the gasket 4, and, aided by cavity pressure, flows along the flow channel to the edge of the gasket 4, simultaneously coating the electrode sheet with the slurry in the lower die head 5's slurry tank. Its core principle is to introduce external adhesive into the internal flow channel of the die head through structural modification, ensuring precise coverage of the electrode sheet edges during coating. This eliminates the need for additional dispensing equipment, ensuring coating stability while reducing costs and improving production efficiency by reusing ordinary dies.

[0019] For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A novel mold head device, characterized in that, The device includes a mold head, a connecting block, a connecting rod, and a gasket. The connecting block is connected to the mold head by a fixing screw. The second screw hole in the middle of the connecting block is a threaded hole, and the bottom of the threaded hole is connected to the threaded part of the connecting rod. The connecting rod is located above the flow channel hole of the gasket. A quick-connect screw is installed at the threaded part above the connecting block, and a PE adhesive channel is installed on the quick-connect screw. The gasket has an adhesive dispensing channel that extends from the original fixing screw hole to the coating edge.

2. The novel die head device according to claim 1, characterized in that, The original gasket had three fixing holes on both sides. The middle hole was improved to have a flow channel groove. The depth of the flow channel groove is half of the gasket. The flow channel groove extends to the edge of the gasket opening and is 0.75mm away from the edge of the gasket.

3. The novel die head device according to claim 1, characterized in that, The connecting rod has a through hole with a diameter of 8mm in the middle.

4. The novel die head device according to claim 1, characterized in that, A polytetrafluoroethylene gasket is installed when the connecting rod is connected to the middle of the mold head.

5. The novel die head device according to claim 1, characterized in that, It also includes a lower die head, which is provided with a slurry groove, and the lower die head is connected to the upper die head and the gasket by fixing screws.

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