Battery case plastic raw material drawing device

Abstract

The utility model discloses a plastic raw material wire drawing device for battery shell relates to plastic extruding granulation technical field. The utility model discloses a cooling water tank, and the cooling water tank is provided with the guide roller group for controlling plastic wire drawing to be introduced below liquid level and to draw out the guide roller group from below liquid level, still include setting up one water blowing mechanism, and the water blowing mechanism includes a plurality of water blowing rings for the plastic wire drawing to pass through, and the water blowing ring is provided with annular air channel, and the inner wall of water blowing ring sets up a plurality of water blowing hole intercommunication with annular air channel, and one side of water blowing ring is provided with the air inlet joint intercommunication with annular air channel, and the plastic wire drawing that passes through water blowing ring is vertical or inclined, and the included angle of plastic wire drawing and vertical direction is 0 the degree 20 degree. The utility model discloses a water blowing mechanism is set up, and the plastic wire drawing is vertical or inclined when passing through water blowing ring, and the effective blowing of the water content on the wire drawing surface is realized, and the water content remaining is reduced, and the surface finish of wire drawing is improved.

Description

Technical Field

[0001] This utility model belongs to the field of plastic extrusion granulation technology, and in particular relates to a device for drawing plastic raw materials for battery casings. Background Technology

[0002] As a core component of energy storage devices, the battery casing's manufacturing quality directly affects the battery's sealing, durability, and safety. During the manufacturing process, the plastic raw material drawing device plays a crucial role. It stretches molten plastic into fine filaments, which are used to form the battery casing's skeleton or reinforcing structure. The drawing process requires the plastic filaments to have a uniform diameter, a smooth surface, and stable mechanical properties to ensure smooth subsequent processing.

[0003] In existing technologies, wire drawing devices typically include a cooling water tank, where the plastic wires solidify rapidly after the coolant is introduced. When the wires are drawn out of the cooling water tank, a large amount of moisture adheres to their surface. If this moisture is not completely removed, it can lead to wire sticking, surface roughness, and even electrochemical corrosion during subsequent storage or processing, which is fatal for applications requiring high cleanliness, such as battery casings. Existing devices attempt to use air drying or mechanical wiping methods. While simple fan blowing can partially remove moisture, the airflow is scattered and energy-intensive, making it impossible to precisely clean the wire surface. Mechanical wiping, on the other hand, easily abrades the wire surface, introducing scratches or contamination. Utility Model Content

[0004] The purpose of this invention is to provide a plastic raw material drawing device for battery casings. By setting a water blowing ring, the device blows the plastic filaments passing through it to remove moisture from the surface of the filaments, thus solving the problems mentioned in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a plastic raw material drawing device for battery casings, comprising a cooling water tank, wherein a guide roller assembly is provided in the cooling water tank for controlling the introduction of plastic filaments below the liquid surface and for guiding the plastic filaments out from below the liquid surface; it also includes a water blowing mechanism, wherein the water blowing mechanism includes several water blowing rings for the plastic filaments to pass through; the water blowing rings are provided with annular air channels, and the inner wall of the water blowing rings is provided with several air blowing holes communicating with the annular air channels; one side of the water blowing rings is provided with an air inlet connector communicating with the annular air channels; the plastic filaments passing through the water blowing rings are vertical or inclined, and the angle between the plastic filaments and the vertical direction is 0°-20°; by setting up a water blowing mechanism and limiting the plastic filaments to be vertical or inclined when passing through the water blowing rings, the moisture on the surface of the filaments is effectively blown away, reducing moisture residue, improving the surface smoothness of the filaments, and avoiding adhesion and corrosion problems in subsequent processing.

[0006] Furthermore, the angle between the axial direction and the vertical direction of the air blowing hole is 30°-60°, which optimizes the airflow angle, making the air blowing more concentrated on the wire drawing surface, and improving the blowing efficiency and uniformity.

[0007] Furthermore, the guide roller assembly includes an inlet roller and an outlet roller fixed to both ends of the cooling water tank via bearing seats A; the guide roller assembly also includes a pair of guide rollers located below the liquid surface; the water blowing mechanism is located above the liquid surface between the guide rollers and the outlet rollers.

[0008] Furthermore, several cooling pipes are installed below the liquid surface of the cooling water tank, and these cooling pipes are connected in series via U-shaped tubes; one cooling pipe at each end is connected to an air pump, and the other cooling pipe is connected to the air inlet connector via a flexible hose, thereby achieving continuous cooling of the coolant and preheating the purging gas to prevent low-temperature gas from directly contacting the wire drawing surface and causing thermal stress damage, thus improving product consistency.

[0009] Furthermore, the water blowing mechanism includes an upper fixed beam and a lower fixed beam arranged opposite to each other, with a channel formed between the upper and lower fixed beams for fixing the air inlet connector; fixing plates A are respectively provided at both ends of the upper fixed beam, and fixing plates B are respectively provided at both ends of the lower fixed beam; a rectangular hole is provided on the fixing plate A, and a pair of fixing holes are provided on the fixing plate B; in the installed state, fixing bolts that penetrate the fixing holes and the rectangular holes are threadedly connected to the reserved threaded holes provided in the inner wall of the cooling water tank; the upper fixed beam includes an upper fixed beam body, and a protrusion A and a clamping groove A are provided on one side of the upper fixed beam body; the lower fixed... A protrusion B and a clamping groove B are provided on one side of the beam; the upper fixed beam and the lower fixed beam are arranged in a mirror image; the air inlet connector includes a rectangular protrusion on the outer wall, and protrusions that fit into clamping grooves A and B are respectively provided on both sides of the rectangular protrusion; a threaded post is provided at the end of the rectangular protrusion, and the threaded post passes through the gap formed by the protrusion A and the protrusion B; and a nut that abuts against the protrusion A and the protrusion B is threaded onto the threaded post; through the design of the upper and lower fixed beams and fixed plates of the water blowing mechanism, the air inlet connector can be adjusted and fixed, which makes it easy to adjust the number and position of the water blowing rings according to the number of wires drawn, simplifying the installation and maintenance process.

[0010] Furthermore, the fixed plates A and B are provided with matching alignment slides and guide grooves on their opposite sidewalls. The threaded end of the fixed plate B located between the two fixed holes abuts against the locking bolt on the fixed plate A. Through the cooperation of the guide slides and guide grooves of the fixed plates A and B, as well as the locking bolt structure, the precise alignment and locking of the fixed plates are ensured, thereby enhancing the stability and reliability of the water blowing mechanism.

[0011] Furthermore, the end of the threaded post is provided with a protrusion, and the protrusion has an opening that communicates with the annular air passage.

[0012] This utility model has the following beneficial effects: This invention achieves effective removal of moisture from the surface of the plastic wire by setting up a water blowing mechanism and limiting the plastic wire to pass through the water blowing ring in a vertical or inclined position, thereby reducing moisture residue and improving the surface smoothness of the wire.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the plastic raw material drawing device of this utility model; Figure 2 This is a schematic diagram of the water blowing ring structure of this utility model; Figure 3 This is a schematic diagram showing the combination of the water blowing ring and the plastic wire drawing mechanism of this utility model; Figure 4 This is a schematic diagram of the water blowing mechanism of this utility model; Figure 5 This is a cross-sectional view of the water blowing mechanism of this utility model; Figure 6 for Figure 4 Enlarged view of a portion of point A in the middle; The attached diagram lists the components represented by each number as follows: 1-Cooling water tank, 2-Water blowing mechanism, 10-Bearing seat A, 11-Inlet roller, 12-Outlet roller, 13-Guide roller, 14-Cooling pipe, 15-U-shaped pipe, 21-Lower fixed beam, 22-Upper fixed beam, 23-Water blowing ring, 24-Fixed plate A, 25-Fixed plate B, 211-Groove B, 212-Protrusion B, 220-Upper fixed beam body, 221-Groove A, 222-Protrusion A, 2301-Annular air passage, 2302-Air blowing hole, 231-Rectangular protrusion, 232-Protrusion, 233-Threaded post, 234-Nut, 235-Protrusion, 241-Rectangular hole, 242-Guide slide bar, 251-Fixed hole, 252-Locking bolt, 253-Guide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Please see Figure 1-3 As shown, this utility model is a plastic raw material drawing device for battery casings, including a cooling water tank 1 filled with coolant. A guide roller assembly is installed inside the cooling water tank 1. The guide roller assembly facilitates the introduction of plastic filaments extruded from the extruder into the cooling water tank 1 below the liquid surface during use. After cooling by the coolant, the cooled plastic filaments are then drawn out from below the liquid surface of the cooling water tank 1 via the guide roller assembly. To facilitate the removal of moisture adhering to the surface of the plastic filaments, a water blowing mechanism 2 is also installed above the liquid surface in the cooling water tank 1. The water blowing mechanism 2 includes several water blowing rings 23 for the plastic filaments to pass through. The plastic filaments are controlled to be drawn out from below the liquid surface and pass through the water blowing rings 23. The airflow from the water blowing rings 23 effectively removes moisture from the surface of the plastic filaments, reducing moisture residue and improving the surface smoothness of the filaments.

[0019] Specifically, such as Figure 2-3 The water blowing ring 23 provided in this application is provided with an annular air passage 2301. The inner wall of the water blowing ring 23 is provided with a plurality of air blowing holes 2302 that communicate with the annular air passage 2301. An air inlet connector that communicates with the annular air passage 2301 is provided on one side of the water blowing ring 23. The plastic wire passing through the water blowing ring 23 is vertical. The axial direction of the air blowing hole 2302 is at an angle of 35° with the vertical direction, which optimizes the airflow angle and makes the air blowing more concentrated on the wire surface, thereby improving the water blowing efficiency and uniformity.

[0020] To facilitate the control of plastic filament drawing and drawing, the guide roller assembly provided in this application includes an inlet roller 11 and an outlet roller 12 fixed at both ends of the cooling water tank 1 by bearing seats A10; the guide roller assembly also includes a pair of guide rollers 13 located below the liquid surface; the water blowing mechanism 2 is located above the liquid surface between the guide rollers 13 and the outlet rollers 12.

[0021] It is known that, to prevent the plastic filaments drawn from the cooling water tank 1 from being rapidly cooled by cold air, causing excessive internal shrinkage, and to cool the coolant in the cooling water tank 1 during use, and to prevent the coolant in the cooling water tank 1 from heating up over long-term use, resulting in different cooling effects on the plastic filaments between different batches of coolant, several cooling pipes 14 are installed below the liquid surface of the cooling water tank 1. These cooling pipes 14 are connected in series via U-shaped pipes 15; one cooling pipe 14 at each end is connected to an air pump, and the other cooling pipe 14 is connected to the air inlet connector via a flexible hose; during use... The air pump pumps the purging gas into the cooling pipe 14. After heat exchange with the coolant in the cooling pipe 14, the gas is sent into the water blowing ring 23. This cools the coolant in the cooling water tank 1 and heats the air blown onto the plastic wire drawing surface. This prevents the low-temperature gas from directly contacting the newly cured plastic wire drawing surface, effectively preventing thermal stress damage caused by sudden temperature changes. After the plastic wire drawing has completed its initial curing in the cooling water tank 1, the surface temperature is still relatively high. If it is purged by cold air at this time, it is easy to cause quality problems such as excessive internal shrinkage and surface micro-cracks.

[0022] Specifically, to facilitate adjusting the number and installation position of the water-blowing rings 23 on the water-blowing mechanism 2 according to the number of plastic filaments, such as... Figure 4-6 The water blowing mechanism 2 provided in this application includes an upper fixed beam 22 and a lower fixed beam 21 arranged in a mirror image, with a channel for fixing the air inlet connector formed between the upper fixed beam 22 and the lower fixed beam 21; fixing plates A24 are respectively provided at both ends of the upper fixed beam 22, and fixing plates B25 are respectively provided at both ends of the lower fixed beam 21; a rectangular hole 241 is provided on the fixing plate A24, and a pair of fixing holes 251 are provided on the fixing plate B25; in the installed state, fixing bolts that penetrate the fixing holes 251 and the rectangular holes 241 are threadedly connected to the reserved threaded holes provided on the inner wall of the cooling water tank 1; the water blowing mechanism 2 fixes the air inlet connector through the channel formed by the upper fixed beam 22 and the lower fixed beam 21, and connects to the inner wall of the cooling water tank 1 using the fixing plates A24 and B25, realizing the adjustability of the water blowing mechanism and facilitating installation and maintenance.

[0023] Based on the above, the sidewalls of the fixed plate A24 and the fixed plate B25 are provided with mutually cooperating sliding strips 242 and guide grooves 253. The threaded end of the fixed plate B25 located between the two fixed holes 251 abuts against the locking bolt 252 on the fixed plate A24. The fixed plate A24 and the fixed plate B25 are provided with guide strips 242 and guide grooves 253, and are fixed by locking bolts 252.

[0024] In one specific embodiment, to facilitate the fixing of the water-blowing ring 23 located between the upper fixed beam 22 and the lower fixed beam 21, and to facilitate the adjustment of the installation position of the water-blowing ring 23 during use, the upper fixed beam 22 includes an upper fixed beam body 220, with a protrusion A222 and a groove A221 on one side of the upper fixed beam body 220; the lower fixed beam 21 has a protrusion B212 and a groove B211 on one side; the upper fixed beam 22 and the lower fixed beam 21 are arranged in a mirror image; the air inlet connector includes a rectangular protrusion 231 provided on the outer wall. The rectangular protrusion 231 has protrusions 232 on both sides that fit into clamping grooves A221 and B211 respectively; the end of the rectangular protrusion 231 is provided with a threaded post 233, which passes through the gap formed by the protrusions A222 and B212; and the threaded post 233 is threaded with a nut 234 that abuts against the protrusions A222 and B212; the rectangular protrusion 231, protrusions 232, threaded post 233 and nut 234 are fixed, providing a modular assembly method, simplifying the disassembly and replacement process, and improving the maintainability of the device.

[0025] The end of the threaded post 233 is provided with a protrusion 235, and the protrusion 235 has an opening that communicates with the annular air passage 2301. During installation, the end of the hose is connected to the protrusion 235.

[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for drawing plastic raw materials for battery casings, characterized in that: Includes a cooling water tank (1), wherein the cooling water tank (1) is provided with a guide roller group for controlling the introduction of plastic filaments into the liquid below the liquid surface and for guiding the plastic filaments out from the liquid below the liquid surface; It also includes a water blowing mechanism (2), which includes a plurality of water blowing rings (23) for plastic filaments to pass through. The water blowing ring (23) is provided with an annular air passage (2301), and the inner wall of the water blowing ring (23) is provided with a plurality of air blowing holes (2302) that are connected to the annular air passage (2301). An air inlet connector that is connected to the annular air passage (2301) is provided on one side of the water blowing ring (23). The plastic wire passing through the blow ring (23) is vertical or inclined, and the angle between the plastic wire and the vertical direction is 0°-20°.

2. The battery casing plastic raw material drawing device according to claim 1, characterized in that, The axial direction of the air blowing hole (2302) is at an angle of 30°-60° with the vertical direction.

3. The battery casing plastic raw material drawing device according to claim 1, characterized in that, The guide roller assembly includes an inlet roller (11) and an outlet roller (12) fixed at both ends of the cooling water tank (1) by bearing seats A (10). The guide roller assembly also includes a pair of guide rollers (13) located below the liquid surface. The water blowing mechanism (2) is located above the liquid surface between the guide roller (13) and the outlet roller (12).

4. The battery casing plastic raw material drawing device according to claim 1, characterized in that, A plurality of cooling pipes (14) are arranged below the liquid surface of the cooling water tank (1), and the plurality of cooling pipes (14) are connected in series through a U-shaped pipe (15). One cooling pipe (14) located at both ends is connected to the air pump, and the other cooling pipe (14) is connected to the air inlet connector through a hose.

5. A battery casing plastic raw material drawing device according to any one of claims 1-4, characterized in that, The water blowing mechanism (2) includes an upper fixed beam (22) and a lower fixed beam (21) arranged opposite to each other, and a channel for fixing the air inlet connector is formed between the upper fixed beam (22) and the lower fixed beam (21); Fixing plates A (24) are respectively provided at both ends of the upper fixed beam (22), and fixing plates B (25) are respectively provided at both ends of the lower fixed beam (21). A rectangular hole (241) is provided on the fixing plate A (24), and a pair of fixing holes (251) are provided on the fixing plate B (25); In the installed state, the fixing bolts with through fixing holes (251) and rectangular holes (241) are threaded to the reserved threaded holes set in the inner wall of the cooling water tank (1).

6. The battery casing plastic raw material drawing device according to claim 5, characterized in that, The fixing plate A (24) and fixing plate B (25) are provided with matching sliding strips (242) and guide grooves (253) on their opposite side walls. The threaded end of the fixing plate B (25) located between the two fixing holes (251) abuts against the locking bolt (252) on the fixing plate A (24).

7. The battery casing plastic raw material drawing device according to claim 5, characterized in that, The upper fixed beam (22) includes an upper fixed beam body (220), and a protrusion A (222) and a groove A (221) are provided on one side of the upper fixed beam body (220); a protrusion B (212) and a groove B (211) are provided on one side of the lower fixed beam (21). The upper fixed beam (22) and the lower fixed beam (21) are arranged in a mirror image; The air intake connector includes a rectangular protrusion (231) on the outer wall, and protrusions (232) that fit into clamping groove A (221) and clamping groove B (211) are respectively provided on both sides of the rectangular protrusion (231). The rectangular protrusion (231) has a threaded post (233) at its end, which passes through the gap formed by the protrusion A (222) and the protrusion B (212); and the threaded post (233) is threaded with a nut (234) that abuts against the protrusion A (222) and the protrusion B (212).

8. The battery casing plastic raw material drawing device according to claim 7, characterized in that, The end of the threaded post (233) is provided with a protrusion (235), and the protrusion (235) has an opening that communicates with the annular air passage (2301).

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