Composite material edge continuous sealing equipment

Abstract

The utility model provides a kind of composite material edge continuous glue sealing equipment, it is related to glue sealing equipment field, including glue sealing platform (100), glue sealing platform is sequentially arranged clamp assembly from left to right, glue coating-glue scraping component and cooling component, clamp assembly includes floating clamp structure and adsorption plate (12), glue coating-glue scraping component includes cylinder glue coating module and multistage glue scraping module, glue pool (201) is formed to the recess of glue coating-glue scraping component corresponding end surface of glue sealing platform (100), cooling component includes cooling top plate (31) and extrusion mechanism.The equipment is significantly improved the blanking consistency and glue spraying quality of battery cell thermal insulation pad material by three-stage glue control coordination and three-section temperature control cooling;Meanwhile, it can be applicable to different specifications of thermal insulation pad product, and the scope of application is wide.

Description

Technical Field

[0001] This utility model relates to the field of sealing equipment technology, specifically to a continuous sealing equipment for the edges of composite materials. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the energy density of power batteries is constantly improving. The volume expansion and contraction of battery cells during charging and discharging (i.e., the "breathing effect") is becoming increasingly significant, leading to increased internal expansion forces within the module and thus significantly increasing the risk of thermal runaway. To prevent thermal runaway from spreading from the battery cell to the entire module or battery pack, thermal insulation pads are typically placed between the cells during the battery design and manufacturing process to achieve multiple functions such as thermal isolation, flame retardant buffering, and sealing protection.

[0003] Currently, widely used thermal insulation pad materials and encapsulation processes struggle to simultaneously meet the comprehensive performance requirements of thermal insulation, flame retardancy, cushioning, and sealing, resulting in numerous technical bottlenecks in the production process. For instance, in traditional automated thermal insulation pad encapsulation systems, the die-cutting mechanism suffers from large positioning errors, uneven cutting pressure, and poor synchronization, easily leading to product dimensional deviations, edge burrs, and material waste. The glue spraying mechanism, on the other hand, suffers from unstable glue volume control, unclear glue cut-off positions, and poor path control precision, making it difficult to adapt to the process requirements of multi-specification products and different glue types. Furthermore, manual corner trimming is inefficient and inconsistent, severely restricting encapsulation quality and the cycle time of automated production lines.

[0004] Furthermore, in terms of the adhesive coating process for heat insulation pads, existing technologies mostly employ traditional dipping equipment (such as extrusion dies and spray nozzles), resulting in poor control of adhesive layer thickness (thickness deviation typically exceeds ±0.1mm). This not only leads to uneven adhesive coating on the surface of the heat insulation pad, affecting adhesion performance, but also causes significant waste of adhesive material (material utilization rate is generally below 85%). Simultaneously, for porous materials such as aerogel felts, traditional spraying methods easily form air bubbles, resulting in a porosity exceeding 5%, further weakening the heat insulation performance. Moreover, existing systems generally employ independent circulation structures such as water-cooled rollers for cooling, which occupy a large area, are complex, have high operating costs, and low cooling efficiency (cooling time for a single piece generally exceeds 30 seconds), making it difficult to meet the demand for high-efficiency, high-volume production of heat insulation pads for new energy vehicle battery modules (production capacity is typically below 100 pieces / hour). Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a continuous edge sealing device for composite materials. This device significantly improves the consistency of material feeding and the quality of adhesive spraying of battery cell heat insulation pads through three-stage adhesive control synergy and three-stage temperature control cooling. At the same time, this device is applicable to heat insulation pad products of different specifications and has a wide range of applications.

[0006] The objective of this utility model is achieved through the following technical solution: A continuous edge sealing device for composite materials includes a sealing platform. From left to right, the sealing platform is sequentially arranged with a clamping assembly, an adhesive application-scraping assembly, and a cooling assembly. The clamping assembly includes a floating clamping structure and an adsorption plate. The floating clamping structure is slidably disposed on one side of the sealing platform, with its bottom surface suspended relative to the end face of the sealing platform. The adsorption plate is disposed on the end face of the sealing platform corresponding to the floating clamping structure. The adhesive application-scraping assembly includes a roller adhesive application module and a multi-stage adhesive scraping module. The end face of the sealing platform is recessed to form an adhesive pool corresponding to the adhesive application-scraping assembly, and the roller adhesive application module and the multi-stage adhesive scraping module are disposed within the adhesive pool. The roller adhesive application module is located on the side closest to the clamping assembly. The cooling assembly includes a cooling top plate and an extrusion mechanism. The cooling top plate is disposed on the end face of the sealing platform and has three cooling zones with temperatures decreasing from left to right. The extrusion mechanism includes two extrusion strips symmetrically disposed on both sides of the upper end of the cooling top plate.

[0007] Based on further optimization of the above scheme, the floating clamp structure includes a mounting base and two clamping plates. The mounting base is connected to a slider that is slidably disposed in the side of the sealing platform. A mounting groove is opened on the side of the mounting base near the glue application-scraping assembly, and two clamping plates are symmetrically arranged in the mounting groove. The clamping plates are made of nickel-titanium alloy, which utilizes its phase change characteristics to achieve adaptive clamping force (phase change temperature 50℃, clamping force range 5~20N), and can maintain stable performance in a temperature range of -20℃ to 80℃.

[0008] Based on further optimization of the above scheme, the adsorption plate adopts a porous adsorption plate with a pore diameter of 0.5 mm and a spacing of 5 mm between adjacent pores; the surface of the adsorption plate is covered with a polytetrafluoroethylene coating with a thickness of 0.1 mm, which is used to reduce the coefficient of friction (coefficient of friction ≤ 0.1) between the adsorption plate and the heat insulation pad material and to avoid scratching the surface of the encapsulation film of PET / PE heat insulation pads; at the same time, the adsorption plate can be connected to an externally installed vacuum pump (power 0.7 kW) through a vacuum pipe (pipe diameter 10 mm) to generate a stable negative pressure of -0.03 MPa.

[0009] Based on further optimization of the above scheme, the roller coating module includes a roller and a roller scraper. The roller is rotatably mounted on the end face of the glue tank, and the roller scraper is mounted on the outer wall of the roller near the clamp assembly. The roller scraper is mounted on the end face of the glue tank, and the distance between the end of the roller scraper and the outer wall of the roller is 0.05 to 0.5 mm.

[0010] Based on further optimization of the above scheme, the multi-stage scraping module includes two scraping clamps and a U-shaped component. The scraping clamps are bent structures and the cross-section of the two scraping clamps is an inverted "X" shape. There is a gap between the two scraping clamps, which is 0.5 to 5 mm. The U-shaped component is set on the lower side of the scraping clamps through a positioning bracket, and the top of the two vertical rods of the U-shaped component corresponds to the "X" opening formed by the two scraping clamps.

[0011] Based on further optimization of the above scheme, the adhesive scraper is made of POM material and the surface is mirror polished; the width of the adhesive scraper is the same as the width of the heat insulation pad (maximum not exceeding 500mm) and the thickness is 10mm.

[0012] Based on further optimization of the above scheme, the installation angle of the U-shaped component is 45±2°, that is, the angle between the two vertical rods of the U-shaped component and the vertical plane is 45±2°; the U-shaped component is made of polytetrafluoroethylene (density is 2.1~2.3g / cm³), the inner wall roughness Ra≤0.4μm, the opening width is 5mm larger than the thickness of the heat insulation pad material, and the depth is 15mm.

[0013] Based on further optimization of the above scheme, the cooling top plate is made of aluminum alloy, with a nickel-phosphorus alloy layer plated on the surface and a thermally conductive silicone pad embedded therein. The thickness of the nickel-phosphorus alloy layer is 0.03mm and the thickness of the thermally conductive silicone pad is 2mm (thermal conductivity 2W / m·K). At the same time, the three cooling zones of the cooling top plate are separated by a heat insulation layer. The extrusion strip is set on the upper side of the cooling top plate by a servo motor set on the end face of the sealing platform (the servo motor drives the two extrusion strips to move towards each other, thereby applying a pressure of 1 to 5N to the heat insulation pad between them). The width of the extrusion strip is 100mm and the height is 30mm.

[0014] The following are the technical effects of this utility model: This application utilizes a clamping assembly consisting of a floating clamping structure and an adsorption plate to achieve stable transport of the heat insulation pad and solve the problem of warping in the unclamped area of ​​traditional heat insulation pads, effectively improving the positioning accuracy of the heat insulation pad material (achieving a positioning accuracy of ±0.05mm at a production speed of 3m / min). Simultaneously, a coating-scraping assembly composed of a roller coating module and a multi-stage scraping module utilizes the roller to achieve uniform distribution of the adhesive and prevent large particles of impurities from adhering to the surface of the heat insulation pad during the scraping process. The multi-stage scraping module precisely controls the scraping thickness while ensuring edge consistency. This coating-scraping assembly reduces adhesive layer thickness fluctuation to ±0.02mm and the scrap rate to below 0.8%. Furthermore, this application employs a cooling assembly consisting of a cooling top plate and an extrusion mechanism. Through three stages of cooling, it prevents excessively rapid crystallization of the adhesive layer, promotes the orderly arrangement of adhesive molecular chains, and ensures the hardness of the adhesive layer. This shortens the adhesive layer curing time and improves the edge sealing strength (adhesive layer curing time reduced to 15s, edge sealing strength increased by 20%). Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the sealing device in an embodiment of the present invention (without the heat insulation pad installed).

[0016] Figure 2 for Figure 1 A magnified view of part A in the image.

[0017] Figure 3 for Figure 1 A schematic diagram from another viewpoint.

[0018] Figure 4 This is a schematic diagram of the sealing device in an embodiment of the present invention (with heat insulation pad installed).

[0019] Figure 5 for Figure 4 Top view.

[0020] Among them, 100 is the sealing platform; 111 is the mounting base; 112 is the clamping plate; 12 is the adsorption plate; 201 is the glue pool; 211 is the roller; 212 is the roller scraper; 221 is the glue scraping clamping plate; 222 is the U-shaped part; 2220 is the positioning bracket; 31 is the cooling top plate; and 32 is the extrusion strip. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1: A continuous edge sealing device for composite materials includes a sealing platform 100, wherein a clamping assembly, an adhesive application-scraping assembly, and a cooling assembly (e.g., from left to right) are sequentially arranged on the sealing platform 100. Figure 1 As shown), the clamping assembly includes a floating clamping structure and an adsorption plate 12. The floating clamping structure is slidably disposed on one side of the sealing platform 100, and its bottom surface is suspended relative to the end face of the sealing platform 100 (as shown). Figure 3 As shown, the floating fixture structure is characterized by a certain distance between the bottom surface of the mounting base 111 and the end face of the sealing platform 100, i.e., it is suspended. The floating fixture structure includes the mounting base 111 and two clamping plates 112. The mounting base 111 is connected to a slider that is slidably disposed on the side of the sealing platform 100 (thus, by controlling the movement of the slider, the mounting base 111, i.e., the entire floating fixture structure, is suspended above the end face of the sealing platform 100). Figure 1 (As shown, it can move left or right); a mounting groove is provided on the side of the mounting base 111 near the glue application-scraping assembly, and two clamping plates 112 are symmetrically arranged in the mounting groove (as shown). Figure 1 (As shown); the clamping plate 112 is made of nickel-titanium alloy, which utilizes its phase change characteristics to achieve adaptive clamping force (phase change temperature 50℃, clamping force range 5~20N), and can maintain stable performance in the temperature range of -20℃ to 80℃ (at the same time, the two clamping plates 112 can be controlled by the drive device set in the mounting base 111 to move closer or further away from each other, and thus adjust the clamping distance according to the heat insulation pad of different thicknesses). The adsorption plate 12 is set on the end face of the sealing platform 100 corresponding to the floating clamp structure. The adsorption plate 12 is a porous adsorption plate (i.e., the cavity is set inside and the cavity surface is uniformly set with multiple holes), the hole diameter is 0.5mm and the spacing between adjacent holes is 5mm. The surface of the adsorption plate is covered with a polytetrafluoroethylene coating with a thickness of 0.1mm, which is used to reduce the coefficient of friction (coefficient of friction ≤0.1) with the heat insulation pad material and avoid scratching the surface of the encapsulation film of PET / PE heat insulation pads. At the same time, the adsorption plate 12 can be connected to an external vacuum pump (power 0.7kW) through a vacuum pipe (pipe diameter 10mm) to generate a stable negative pressure of -0.03MPa.

[0023] The glue application-scraping assembly includes a roller glue application module and a multi-stage scraping module. The sealing platform 100 has a recessed end face corresponding to the glue application-scraping assembly, forming a glue pool 201. The roller glue application module and the multi-stage scraping module are disposed within the glue pool 201. The roller glue application module is located on the side closest to the fixture assembly (e.g., ...). Figure 1 and Figure 2(As shown); the roller coating module includes a roller 211 and a roller scraper 212. The roller 211 is rotatably mounted on the end face of the glue tank 201, and the roller scraper 212 is mounted on the outer wall of the roller 211 near the clamp assembly. The roller scraper 212 is mounted on the end face of the glue tank 201, and the distance between the end of the roller scraper 212 and the outer wall of the roller 211 is 0.05~0.5mm. The surface of the roller 211 is electrochemically polished and has uniformly distributed micropores with a diameter of 0.2mm inside. The shaft end of the roller 211 is connected to a rotary joint and is connected to a negative pressure system through a vacuum tube to form a uniform negative pressure field (pressure -0.02MPa) on the surface of the roller 211, ensuring that the glue is uniformly adsorbed on the surface of the roller 211. The roller scraper 212 is made of stainless steel, with a hardened cutting edge and a hard chrome plated surface (0.05mm thick). The roller scraper 212 is mounted on an angle adjustment bracket in the glue tank, and the contact angle between the roller scraper 212 and the roller 211 can be adjusted (range 20°~45°) via a servo motor. The multi-stage glue scraping module includes two scraper clamps 221 and a U-shaped component 222. The scraper clamps 221 have a bent structure, and the transverse cross-section of the two scraper clamps 221 is an inverted "X" shape (e.g., ...). Figure 2 or Figure 5 As shown), there is a gap of 0.5 to 5 mm between the two scraper plates 221; the U-shaped part 222 is set on the lower side of the scraper plate 221 by the positioning bracket 2220, and the top of the two vertical rods of the U-shaped part 222 corresponds to the "X" opening formed by the two scraper plates 221 (as shown). Figure 2 (As shown). The adhesive scraper 221 is made of POM (polyoxymethylene) material with a mirror-polished surface. The width of the adhesive scraper 221 is the same as the width of the heat insulation pad (maximum not exceeding 500mm), and the thickness is 10mm. The distance between the two adhesive scraper 221 can be adjusted by a ball screw adjuster (i.e., a gap of 0.5 to 5mm) to accommodate heat insulation pads of different thicknesses. The installation angle of the U-shaped part 222 is 45±2°, that is, the angle between the two vertical rods of the U-shaped part 222 and the vertical plane is 45±2° (e.g., ...). Figure 2 As shown, the two vertical rods of the U-shaped component 222 are inclined towards the side closer to the roller 211; the U-shaped component 222 is made of polytetrafluoroethylene (density 2.1~2.3g / cm³), with an inner wall roughness Ra≤0.4μm, an opening width 5mm larger than the thickness of the heat insulation pad material, and a depth of 15mm. Additionally, a 3mm wide and 2mm deep guide groove can be provided at the bottom of the U-shaped component 222 to guide and recover the scraped adhesive.

[0024] The cooling assembly includes a cooling top plate 31 and an extrusion mechanism. The cooling top plate 31 is located on the end face of the sealing platform 100 and has three cooling zones from left to right, with the temperature decreasing from high to low. The three cooling zones from left to right are: a 30°C cooling zone (reducing the temperature from 60°C to 30°C), a 20°C cooling zone (reducing the temperature from 30°C to 20°C), and a 10°C cooling zone (reducing the temperature from 20°C to 10°C), achieving cooling through a combination of air cooling and water cooling. The cooling top plate 31 is made of aluminum alloy, with a nickel-phosphorus alloy layer plated on the surface and a thermally conductive silicone pad embedded in it. The nickel-phosphorus alloy layer is 0.03 mm thick, and the thermally conductive silicone pad is 2 mm thick (thermal conductivity 2 W / m·K). The three cooling zones of the cooling top plate 31 are separated by a heat insulation layer. The extrusion mechanism includes two extrusion strips 32, which are symmetrically arranged on both sides of the upper end of the cooling top plate 31. The extrusion strips 32 are set on the upper side of the cooling top plate 31 by a servo motor set on the end face of the sealing platform 100 (the servo motor drives the two extrusion strips to move towards each other, thereby applying an extrusion pressure of 1 to 5 N to the heat insulation pad between them). The extrusion strips 32 are 100 mm wide and 30 mm high.

[0025] In addition, the adsorption plate 12 and the cooling top plate 31 are respectively embedded in the corresponding sections of the sealing platform 100 and are raised and lowered by a cylinder-type lifting mechanism set at the bottom of the sealing platform 100, so that the end faces of the adsorption plate 12 and the cooling top plate 31 are in contact with the bottom surface of the heat insulation pad sealing.

[0026] Operating procedures: First, the operator places the felt material with PET / PE encapsulation film laminated on both sides on the feeding platform, checks the material thickness and position, and adjusts the spacing and height of the clamping components to ensure the clamps accurately hold the lower part of the material (clamping width 30mm). Simultaneously, the vacuum adsorption system is activated to ensure material stability. Then, the floating clamping structure moves the material to the right at a set speed (e.g., 0.5–5 m / min), while roller 211 rotates synchronously (5–20 rpm), adsorbing the adhesive under negative pressure (-0.02 MPa). During this process, the roller scraper 212 scrapes off excess adhesive from the surface of roller 211, initially controlling the adhesive layer thickness within the range of 0.15–0.3 mm. As the floating clamp structure moves the material continuously to the right, the adhesive scraper 221 precisely controls the adhesive layer thickness within the target range of ±0.02mm (the gap of the adhesive scraper 221 is adjusted according to the material thickness). Simultaneously, the inclined U-shaped component 222 further scrapes away excess adhesive from the material edges and sends the recovered adhesive back to the adhesive pool via a guide channel. Finally, the material moves to the cooling area, where the cooling top plate 31 is raised, and the extrusion strips 32 on both sides apply extrusion pressure (1-5N) to flatten the adhesive layer. The material passes through the three-stage cooling zone of the cooling top plate 31, and under the combined effect of air cooling and water cooling, the adhesive layer solidifies within 15 seconds.

[0027] Example 2: As another preferred embodiment, based on the above-described embodiment 1, the sidewall of the glue tank 201 adopts a double-layer jacket structure, namely, the inner layer is made of 316L stainless steel with a thickness of 3mm, the outer layer is made of carbon steel with a thickness of 5mm, and the space between the inner and outer layers is filled with aluminum silicate insulation cotton with a thickness of 50mm. Meanwhile, electric heating tubes (6kW power) are evenly distributed at the bottom of the glue tank 201, and precise temperature control of 180~220℃ is achieved through a PID controller; a stirring paddle (30rpm rotation speed) is installed inside the glue tank 201, located between the electric heating tubes and the drum, to ensure the uniformity of the glue solution temperature.

Claims

1. A composite edge continuous encapsulation apparatus, characterized by: The system includes a sealing platform, from left to right, comprising a clamping assembly, an adhesive application-scraping assembly, and a cooling assembly. The clamping assembly includes a floating clamping structure and an adsorption plate. The floating clamping structure is slidably mounted on one side of the sealing platform, with its bottom surface suspended relative to the end face of the sealing platform. The adsorption plate is mounted on the end face of the sealing platform corresponding to the floating clamping structure. The adhesive application-scraping assembly includes a roller adhesive application module and a multi-stage adhesive scraping module. The end face of the sealing platform is recessed to form an adhesive pool corresponding to the adhesive application-scraping assembly, and the roller adhesive application module and the multi-stage adhesive scraping module are located within the adhesive pool. The roller adhesive application module is located on the side closest to the clamping assembly. The cooling assembly includes a cooling top plate and an extrusion mechanism. The cooling top plate is mounted on the end face of the sealing platform and has three cooling zones with temperatures decreasing from left to right. The extrusion mechanism includes two extrusion strips symmetrically arranged on both sides of the upper part of the cooling top plate.

2. The composite material edge continuous sealing and gluing apparatus according to claim 1, characterized in that: The floating clamp structure includes a mounting base and two clamping plates. The mounting base is connected to a slider that is slidably disposed on the side of the sealing platform. A mounting groove is opened on the side of the mounting base near the glue application-scraping assembly, and two clamping plates are symmetrically arranged in the mounting groove.

3. The composite material edge continuous sealing equipment according to claim 1, characterized in that: The adsorption plate is a porous adsorption plate with a pore diameter of 0.5 mm and a spacing of 5 mm between adjacent pores; the surface of the adsorption plate is covered with a polytetrafluoroethylene coating with a thickness of 0.1 mm.

4. The apparatus according to claim 1, wherein: The roller coating module includes a roller and a roller scraper. The roller is rotatably mounted on the end face of the glue tank, and the roller scraper is mounted on the outer wall of the roller near the clamp assembly. The roller scraper is mounted on the end face of the glue tank, and the distance between the end of the roller scraper and the outer wall of the roller is 0.05 to 0.5 mm.

5. The apparatus of claim 1, wherein: The multi-stage scraping module includes two scraping clamps and a U-shaped component. The scraping clamps are bent and the cross-section of the two scraping clamps is an inverted "X" shape. There is a gap of 0.5 to 5 mm in the middle of the two scraping clamps. The U-shaped component is set on the lower side of the scraping clamps through a positioning bracket, and the top of the two vertical rods of the U-shaped component corresponds to the "X" opening formed by the two scraping clamps.

6. The continuous edge sealing equipment for composite materials according to claim 5, characterized in that: The width of the adhesive scraper is the same as the width of the heat insulation pad, and the thickness is 10mm.

7. The apparatus of claim 5, wherein: The installation angle of the U-shaped component is 45±2°; the opening width of the U-shaped component is 5mm larger than the thickness of the heat insulation pad material, and the depth is 15mm.

8. The apparatus of claim 1, wherein: After the surface of the cooling top plate is plated with a nickel-phosphorus alloy layer, a thermally conductive silicone pad is embedded. The thickness of the nickel-phosphorus alloy layer is 0.03mm and the thickness of the thermally conductive silicone pad is 2mm. The extrusion strip is set on the upper side of the cooling top plate by a servo motor set on the end face of the sealing platform. The extrusion strip is 100mm wide and 30mm high.

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