Curved surface self-adaptive gluing device and using method

Abstract

The application discloses a curved surface self-adaptive glue coating device and a using method, and belongs to the technical field of glue coating. In the device, a glue cylinder is movably arranged on a fixed base plate, the lower end of the glue cylinder is provided with a glue outlet for smoothly discharging high-viscosity glue, and a piston is arranged in the glue cylinder and is movable up and down. A guide wheel is arranged at the lower end of the glue cylinder and is distributed on the left and right sides of the glue outlet, and is used for contacting a coated surface. A floating mechanism is fixed to the glue cylinder and is connected to the fixed base plate and is movable up and down. A glue scraping mechanism is fixed to the fixed base plate and is located behind the glue outlet, and is used for contacting the coated surface and scraping glue. The application has the advantages of good glue coating quality, high efficiency, no damage to the coated surface of a coated component, convenient use, and is especially suitable for curved surface coating and is also suitable for plane coating.

Description

Technical Field

[0001] This invention relates to the field of adhesive coating technology, and in particular to a curved surface adaptive adhesive coating device and its usage method. Background Technology

[0002] Adhesive bonding is a technique that uses adhesives to connect two components without the need for drilling. It achieves sufficient bond strength without damaging the structure of the bonded materials, exhibits good fatigue resistance, uniform stress distribution, and a lighter connection structure compared to mechanical bonding methods. It is widely used in the aerospace industry for connecting complex curved components. High-viscosity adhesives are crucial for bonding such components.

[0003] The coating method is the core element of the adhesive coating process. It determines the overall design of the coating system and directly affects the quality of the adhesive layer and the coating itself. For existing coating methods, due to the large, complex, and irregular surfaces of the components, the film coating method, roller coating method, and spin coating method are not suitable for coating adhesives on structural panel surfaces. While the spray coating method offers good coating quality and high efficiency, it is unsuitable because the high viscosity of the adhesive results in poor flowability and high pipeline resistance, making it difficult to atomize the adhesive. To ensure adhesive film thickness, the scraping method requires the use of a scraper, which may damage the structure upon contact with the scraper. The screen printing method offers good adhesive layer quality and high precision, but the large structural dimensions cause deformation of the large-size screens. Furthermore, for components with varying sizes, creating individual screens for each structural panel is too costly, making it unsuitable for large-scale adhesive coating of structures.

[0004] An existing curved surface coating device uses a multi-axis moving mechanism to drive the applicator into the curved surface for coating. It achieves curved surface coverage through path planning, but it cannot guarantee uniform coating coverage. This is because the adhesive layer thickness is small, the precision requirements are high, and the cumulative error of the end motion of the multi-axis moving mechanism is large, making it difficult to rely on the motion precision of the multi-axis moving mechanism to achieve the requirement of uniform and equal thickness coverage of the adhesive on the curved surface.

[0005] An existing automated adhesive scraping system uses a method of dispensing and scraping adhesive simultaneously. A robot grasps the adhesive scraping module to perform the scraping operation, and the excess adhesive on the workpiece is scraped off by a scraper. However, the scraper makes hard contact with the adhesive and is prone to scratching the adhesive surface. Moreover, this scraper is only suitable for flat parts and is difficult to adapt to the need for uniform adhesive application on curved parts. The dispensing valve is also unable to achieve rapid and large-volume extrusion of high-viscosity adhesive.

[0006] In summary, current high-viscosity adhesive scraping methods are mainly used for flat parts and are difficult to apply to curved surfaces. The uniform coating of high-viscosity adhesives on curved surfaces mainly relies on manual scraping, which has problems such as low efficiency and poor coating quality consistency. Summary of the Invention

[0007] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a curved surface adaptive adhesive application device that provides good adhesive quality, high efficiency, does not damage the coated surface of the component, is easy to use, and is particularly suitable for curved surface coating, but also suitable for planar coating.

[0008] The surface adaptive adhesive applicator according to an embodiment of the present invention includes:

[0009] Fixed base plate;

[0010] A glue tube that can move up and down through the fixed substrate, the lower end of the glue tube having a glue outlet for smooth flow of high-viscosity glue, and a piston that can move up and down inside the glue tube;

[0011] Guide wheels are disposed at the lower end of the glue tube and distributed on the left and right sides of the glue nozzle, for contacting the surface to be coated;

[0012] A floating mechanism is fixed to the rubber cylinder and is connected to the fixed base plate in a way that allows it to float up and down.

[0013] The adhesive scraping mechanism is fixed on the fixed substrate and located directly behind the adhesive nozzle, and is used to scrape adhesive in constant force contact with the surface to be coated.

[0014] According to an embodiment of the present invention, the curved surface adaptive adhesive coating apparatus is used by mounting a glue cartridge containing high-viscosity adhesive on a floating mechanism, and fixing a fixed substrate to a moving mechanism via a quick-release connection. The moving mechanism drives the curved surface adaptive adhesive coating apparatus to apply adhesive to the surface to be coated according to a set trajectory. During the coating process, the guide wheel moves in close contact with the surface to be coated under the action of the floating mechanism. Simultaneously, the glue nozzle opens, and the piston moves downward under the action of the piston driver, causing the high-viscosity adhesive in the glue cartridge to flow from the glue nozzle onto the surface to be coated. The high-viscosity adhesive flowing onto the surface is then scraped evenly by a scraping mechanism that maintains constant force against the surface. By rationally planning the coating path, uniform coating of the entire surface can be achieved.

[0015] The curved surface adaptive adhesive applicator of this invention has the following advantages: by setting a nozzle to allow smooth flow of high-viscosity adhesive and a piston to drive the high-viscosity adhesive in the glue cylinder, adaptive and rapid adhesive application can be achieved. The high-viscosity adhesive makes adaptive contact with the surface to be coated, such as a curved or flat surface, at the nozzle, achieving adaptability to the curvature of the surface to be coated; by adjusting the nozzle moving speed and the pressure at the top of the piston in the glue cylinder based on the curvature characteristics of the surface to be coated, the amount of adhesive dispensed from the nozzle can be controlled, thereby controlling the adhesive layer thickness and achieving adaptability to the curvature of the surface to be coated; by setting a floating... During the adhesive application process, the guide wheel, under the action of the floating mechanism, can always maintain contact with the surface to be coated. This overcomes the problem of inaccurate relative position between the adhesive application device and the surface to be coated caused by transmission errors in the moving mechanism. It also ensures a certain gap between the nozzle and the surface to be coated, preventing the nozzle from scratching the surface and facilitating the flow of high-viscosity adhesive from the nozzle. By setting up a scraping mechanism, the high-viscosity adhesive applied to the surface by the front adhesive tube will be scraped evenly by the scraping mechanism, achieving uniform coating of the adhesive layer on the surface to be coated and also facilitating the control of the adhesive layer thickness.

[0016] In summary, the surface adaptive adhesive application device of the present invention can adaptively and uniformly apply adhesive to the surface to be coated, such as a curved surface or a flat surface, with good adhesive quality, high efficiency, no damage to the surface of the component to be coated, and convenient to use.

[0017] In some embodiments, the width of the nozzle in the left-right direction is less than the distance in the left-right direction between the guide wheel located on the left and the guide wheel located on the right.

[0018] In some embodiments, the floating mechanism includes a floating connecting plate and a plurality of floating compression springs. The floating connecting plate is located below the fixed base plate and is detachably fixed to the rubber cylinder. The plurality of floating compression springs are distributed at intervals along the outer periphery of the rubber cylinder and are disposed between the floating connecting plate and the fixed base plate.

[0019] In some embodiments, the adhesive scraping mechanism includes an adhesive scraper and a force control unit. The adhesive scraper is fixed to the fixed substrate by the force control unit, and the adhesive scraper is used to scrape adhesive in constant force contact with the surface to be coated.

[0020] In some embodiments, the width of the scraper in the left-right direction is greater than the distance in the left-right direction between the guide wheel located on the left and the guide wheel located on the right.

[0021] In some embodiments, a lifting mechanism is also included, which supports the floating mechanism and is mounted on the fixed base plate for driving the rubber cylinder to rise and fall.

[0022] In some embodiments, the lifting mechanism includes a lifting plate and a lifting driver; the lifting plate is located below the floating connecting plate and supports the floating connecting plate, and the lifting driver is fixed on the fixed base plate for driving the lifting plate to move up and down.

[0023] In some embodiments, a sealing mechanism is also included, which is used to open and close the adhesive opening.

[0024] In some embodiments, a sealing groove is provided on the side wall of the adhesive opening; the sealing mechanism includes a sealing drive assembly and a sealing plate; the sealing drive assembly is disposed on the fixed base plate and connected to the sealing plate, and is used to drive the sealing plate to insert into the sealing groove and move out of the sealing groove, so as to correspondingly close and open the adhesive opening.

[0025] The present invention also proposes a method for using a curved surface adaptive adhesive applicator.

[0026] The method of using the curved surface adaptive adhesive applicator according to an embodiment of the present invention includes the following steps:

[0027] S1: The glue cylinder containing high-viscosity adhesive is installed on the floating mechanism, and the fixed base plate is fixed on the moving mechanism through the quick-release connection;

[0028] S2: The moving mechanism drives the curved surface adaptive adhesive applicator to apply adhesive to the surface to be coated according to a set trajectory. During the adhesive application process, the guide wheel moves in close contact with the surface to be coated under the action of the floating mechanism. At the same time, the glue nozzle opens, and the piston moves downward under the action of the piston driver, so that the high-viscosity adhesive in the glue tube flows from the glue nozzle to the surface to be coated. The high-viscosity adhesive flowing to the surface to be coated is then scraped evenly by the scraping mechanism, which then makes constant contact with the surface to be coated.

[0029] Since the method of using the adaptive adhesive coating device of the present invention adopts the adaptive adhesive coating device of the present invention, the method of using the adaptive adhesive coating device of the present invention has the same technical effect as the adaptive adhesive coating device of the present invention, and will not be described again here.

[0030] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0032] Figure 1This is a schematic diagram of the curved surface adaptive adhesive application device of the present invention;

[0033] Figure 2 This is a schematic diagram of the glue cylinder of the curved surface adaptive glue coating device of the present invention;

[0034] Figure 3 This is a schematic diagram of the sealing mechanism of the curved surface adaptive adhesive applicator of the present invention;

[0035] Figure 4 This is a schematic diagram illustrating an application scenario of the curved surface adaptive adhesive coating device of the present invention.

[0036] Figure label:

[0037] Curved surface adaptive glue applicator 1000; fixed substrate 10; glue tube 20; glue outlet 201; sealing groove 2011; piston 202; locking protrusion 203; guide wheel 30; floating mechanism 40; floating connecting plate 401; locking groove 4011; floating compression spring 402; floating guide column 403; glue scraping mechanism 50; glue scraper 501; force control unit 502; lifting mechanism 60; lifting plate 601; lifting driver 602; lifting guide column 603; sealing mechanism 70; sealing plate 701; sealing drive assembly 702; fixed base 7021; pull rod shaft 7022; sealing guide column 7023; preload spring 7024; sealing driver 7025; guide pulley 7026; moving mechanism 2000. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following is combined Figures 1 to 4 The curved surface adaptive adhesive applicator 1000 of the present invention will be described in this embodiment.

[0040] like Figures 1 to 4 As shown, the curved surface adaptive adhesive applicator 1000 according to an embodiment of the present invention includes a fixed substrate 10, an adhesive cylinder 20, a guide wheel 30, a floating mechanism 40, and an adhesive scraping mechanism 50.

[0041] The fixed base plate 10 is mainly used to provide mounting functionality for other functional components of the curved surface adaptive adhesive applicator 1000, such as the adhesive cartridge 20, the floating mechanism 40, and the adhesive scraping mechanism 50. Simultaneously, the fixed base plate 10 can also be fixed to the quick-release latching part, so as to connect with the moving mechanism 2000, such as a robotic arm, via the quick-release latching part. Figure 4As shown, a quick-release and reliable connection is achieved, thereby enabling the curved surface adaptive adhesive applicator 1000 to be quickly and reliably installed at the end of the moving mechanism 2000.

[0042] The glue cartridge 20 is mainly used to store high-viscosity adhesive. The glue cartridge 20 can move vertically through the fixed substrate 10. Specifically, the fixed substrate 10 has perforations through which the glue cartridge 20 passes and can move smoothly up and down relative to the fixed substrate 10. The lower end of the glue cartridge 20 has a glue outlet 201 for the smooth flow of high-viscosity adhesive. The glue outlet 201 is mainly used for the high-viscosity adhesive to flow out of the glue cartridge 20. To ensure smooth and rapid flow of the high-viscosity adhesive and to ensure that the path of the glue outlet 201 corresponds to the surface area to be coated is adaptively covered with high-viscosity adhesive, the glue outlet 201 is a large-size outlet 201. The large-size nozzle 201 can be understood as being larger than the nozzle size of a conventional glue cartridge. The large-size nozzle 201 can automatically cover the surface to be coated below, such as curved or flat surfaces, by utilizing the fluidity of the high-viscosity glue, thus adapting to changes in the curvature of the surface to be coated and automatically filling in the pits on the surface of the bonded component. Based on the curvature of the surface to be coated below the nozzle 201, and by adjusting the moving speed of the nozzle 201 and the pressure at the top of the piston 202 inside the glue cartridge 20, the glue dispensing thickness of the nozzle 201 can be precisely controlled, achieving self-adaptation to the curvature of the surface to be coated. The inner cavity of the glue cartridge 20 is directly connected to the large-size glue nozzle 201, enabling large-capacity adaptive and rapid glue supply, meeting the requirements for uniform and efficient coating of high-viscosity adhesives on large-area curved surfaces. The glue nozzle 201 can also be used to inject high-viscosity adhesives into the glue cartridge 20. The glue cartridge 20 is equipped with a piston 202 that can move up and down. The piston 202 is mainly used to push the high-viscosity adhesive in the glue cartridge 20 downwards under the action of the piston actuator, ensuring that the high-viscosity adhesive flows more smoothly out of the glue nozzle 201, ensuring that the surface to be coated is covered with high-viscosity adhesive along the path traversed by the glue nozzle 201. It should be noted that the upper end of the glue cartridge 20 has an opening for the piston 202 to be inserted into the glue cartridge 20, after which the upper opening of the glue cartridge 20 is sealed. The piston actuator can be pneumatically driven, or it can be replaced with a cylinder, electric actuator, spring, etc.

[0043] Guide wheels 30 are located at the lower end of the glue cylinder 20 and distributed on the left and right sides of the glue nozzle 201, for contacting the surface to be coated. By providing guide wheels 30, the guide wheels 30 maintain contact with the surface to be coated during the glue application process, overcoming the problem of inaccurate relative position between the glue application device and the surface to be coated caused by transmission errors in the moving mechanism 2000. This ensures a certain gap between the glue nozzle 201 and the surface to be coated, preventing the glue nozzle 201 from scratching the surface and facilitating the flow of high-viscosity glue from the glue nozzle 201. Simultaneously, the guide wheels 30 have low friction with the surface to be coated, preventing damage. Preferably, flexible guide wheels 30 are used to further prevent damage to the surface to be coated.

[0044] The floating mechanism 40 is detachably fixed to the glue cartridge 20, which facilitates the replacement and installation of the glue cartridge 20. The floating mechanism 40 can be connected to the fixed substrate 10 in a floating manner. During the glue application process, the guide wheel 30 can always maintain contact with the surface to be coated under the action of the floating mechanism 40, which overcomes the problem of inaccurate relative position between the glue application device and the surface to be coated caused by the transmission error of the moving mechanism 2000. This ensures that there is a certain gap between the glue nozzle 201 and the surface to be coated, preventing the glue nozzle 201 from scratching the surface to be coated, and also facilitating the flow of high-viscosity glue from the glue nozzle 201.

[0045] The adhesive scraping mechanism 50 is fixed on the fixed substrate 10 and located directly behind the adhesive nozzle 201. It is used to scrape adhesive with constant force against the surface to be coated, meaning that the adhesive scraping mechanism 50 is in constant force contact with the surface to be coated throughout the adhesive scraping process. During the adhesive coating process, the high-viscosity adhesive applied to the surface by the front adhesive cartridge 20 is scraped evenly by the subsequently passing adhesive scraping mechanism 50, achieving uniform coating of the adhesive layer and also facilitating the control of the adhesive layer thickness.

[0046] According to an embodiment of the present invention, the curved surface adaptive adhesive coating apparatus 1000, in use, involves mounting a glue cylinder 20 containing high-viscosity adhesive on a floating mechanism 40, and fixing a fixed substrate 10 to a moving mechanism 2000 via a quick-release connection. The moving mechanism 2000 drives the curved surface adaptive adhesive coating apparatus 1000 to apply adhesive to the surface to be coated according to a set trajectory. During the coating process, the guide wheel 30 moves in close contact with the surface to be coated under the action of the floating mechanism 40. Simultaneously, the glue inlet 201 opens, and the piston 202 moves downward under the action of the piston driver, causing the high-viscosity adhesive in the glue cylinder 20 to flow from the glue inlet 201 onto the surface to be coated. The high-viscosity adhesive flowing onto the surface is then scraped evenly by the scraping mechanism 50, which maintains constant force against the surface. By rationally planning the coating path, uniform coating of the entire surface can be achieved.

[0047] The curved surface adaptive adhesive applicator 1000 of this invention has the following advantages: by setting an outlet 201 to facilitate the smooth flow of high-viscosity adhesive and a piston 202 to drive the high-viscosity adhesive in the adhesive cartridge 20, adaptive and rapid adhesive application can be achieved. The high-viscosity adhesive makes adaptive contact with the surface to be coated, such as a curved or flat surface, at the outlet 201, achieving adaptability to the curvature of the surface to be coated; by adjusting the moving speed of the outlet 201 and the pressure at the top of the piston 202 in the adhesive cartridge 20 based on the curvature characteristics of the surface to be coated, the amount of adhesive dispensed from the outlet 201 can be controlled, thereby controlling the thickness of the adhesive layer and achieving adaptability to the curvature of the surface to be coated; by setting a floating... During the glue application process, the guide wheel 30, under the action of the floating mechanism 40, can always maintain contact with the surface to be coated, overcoming the problem of inaccurate relative position between the glue application device and the surface to be coated caused by the transmission error of the moving mechanism 2000. This ensures that the glue nozzle 201 has a certain gap with the surface to be coated, preventing the glue nozzle 201 from scratching the surface to be coated, and also facilitating the flow of high-viscosity glue from the glue nozzle 201. By setting the glue scraping mechanism 50, during the glue application process, the high-viscosity glue applied to the surface to be coated by the front glue cylinder 20 will be scraped evenly by the subsequently passing glue scraping mechanism 50, achieving uniform coating of the glue layer on the surface to be coated, and also facilitating the control of the glue layer thickness.

[0048] In summary, the surface adaptive adhesive applicator 1000 of this invention can adaptively and uniformly apply adhesive to surfaces such as curved or flat surfaces, resulting in good adhesive quality, high efficiency, no damage to the surface of the component being coated, and ease of use. It is particularly suitable for curved surface coating and also suitable for flat surface coating.

[0049] In some embodiments, there are four guide wheels 30, with two guide wheels 30 and two other guide wheels 30 symmetrically distributed on the left and right sides of the nozzle 201. During the glue application process, the four guide wheels 30, under the action of the floating mechanism 40, always maintain contact with the surface to be coated, such as a curved surface or a flat surface, so that the glue tube 20 is always perpendicular to the surface to be coated and the nozzle 201 maintains a certain gap with the surface to be coated. This overcomes the problem of inaccurate relative position between the glue application device and the surface to be coated caused by the transmission error of the moving mechanism 2000, avoids the nozzle 201 from scratching the surface to be coated, and also facilitates the flow of high-viscosity glue from the nozzle 201.

[0050] In some embodiments, the width of the nozzle 201 in the left-right direction is smaller than the distance between the guide wheel 30 on the left and the guide wheel 30 on the right in the left-right direction. This ensures that during the application process, the high-viscosity adhesive flowing from the nozzle 201 to the surface being coated will not come into contact with or adhere to the guide wheels 30.

[0051] In some embodiments, the floating mechanism 40 includes a floating connecting plate 401 and a plurality of floating compression springs 402. The floating connecting plate 401 is located below the fixed base plate 10 and is detachably fixed to the glue cylinder 20, facilitating the replacement and installation of the glue cylinder 20. The plurality of floating compression springs 402 are distributed at intervals along the outer periphery of the glue cylinder 20 and are disposed between the floating connecting plate 401 and the fixed base plate 10. In this way, the floating compression springs 402 exert elastic force on the guide wheel 30 through the floating connecting plate 401 and the glue cylinder 20, so that the guide wheel 30 can always maintain contact with the surface to be coated during the glue application process, and the guide wheel 30 adapts to the surface to be coated, such as a curved surface or a flat surface, so that the glue cylinder 20 is always perpendicular to the surface to be coated and the glue nozzle 201 maintains a certain gap with the surface to be coated. This overcomes the problem of inaccurate relative position between the glue application device and the surface to be coated caused by the transmission error of the moving mechanism 2000, avoids the glue nozzle 201 from scratching the surface to be coated, and also facilitates the flow of high viscosity glue from the glue nozzle 201.

[0052] In some embodiments, such as Figure 2 As shown, the outer circumferential surface of the rubber sleeve 20 is provided with a locking protrusion 203, and the floating connecting plate 401 is provided with a mounting hole for the rubber sleeve 20 to pass through. A locking groove 4011 is provided on the side wall of the mounting hole, and the locking groove 4011 engages with the locking protrusion 203. The floating connecting plate 401 and the locking protrusion 203 are fixed together by a fastener 404, for example, a pull ring pin, which radially fixes the floating connecting plate 401 and the locking protrusion 203. Therefore, the replacement and installation of the rubber sleeve 20 are convenient.

[0053] In some embodiments, the floating mechanism 40 further includes a plurality of floating guide posts 403, which are spaced apart along the outer periphery of the glue cylinder 20, with the lower ends of the floating guide posts 403 fixed to the floating connecting plate 401. The floating guide posts 403 can slide up and down through the fixed base plate 10, and the upper ends of the floating guide posts 403 are fixed with anti-detachment parts. By setting the floating guide posts 403, the glue cylinder 20 can move up and down smoothly, and the shaking of the glue cylinder 20 can improve the glue coating quality.

[0054] In some implementations, the adhesive scraping mechanism 50 includes a scraper 501 and a force control unit 502. The scraper 501 is fixed to the fixed substrate 10 via the force control unit 502. The scraper 501 is used to scrape adhesive in constant-force contact with the surface to be coated. During the coating process, the scraper 501, under the action of the force control unit 502, maintains constant-force contact with the surface to be coated, ensuring that the scraper 501 remains in contact with the surface. During the coating movement, the glue cylinder 20 is positioned in front to apply adhesive to the surface, while the scraper 501 is positioned behind to achieve uniform coating of the adhesive layer. Preferably, the scraper 501 is a flexible scraper 501 to avoid scratching the surface to be coated.

[0055] In some embodiments, the width of the scraper 501 in the left-right direction is greater than the distance in the left-right direction between the guide wheel 30 on the left and the guide wheel 30 on the right. This allows the scraper 501 to apply high-viscosity adhesive to the areas traversed by the guide wheels 30.

[0056] In some embodiments, a lifting mechanism 60 is also included. The lifting mechanism 60 supports the floating mechanism 40 and is mounted on the fixed substrate 10 for driving the glue cartridge 20 to rise and fall. For example, on the surface to be coated, when no glue application is required and only a scraping operation is permitted, the lifting mechanism 60 can drive the glue cartridge 20 to rise and lift it, causing the guide wheel 30 to disengage from the surface to be coated, allowing only the scraping mechanism 50 to scrape glue on the surface to be coated. When glue application is required on the surface to be coated again, the lifting mechanism 60 drives the glue cartridge 20 to fall, causing the guide wheel 30 to contact the surface to be coated. In other words, by providing the lifting mechanism 60, it is possible to allow only a scraping operation to be performed in certain areas of the surface to be coated.

[0057] In some embodiments, the lifting mechanism 60 includes a lifting plate 601 and a lifting driver 602; the lifting plate 601 is located below and supports the floating connecting plate 401, and the lifting driver 602 is fixed on the fixed base plate 10 for driving the lifting plate 601 to move up and down. By providing the lifting mechanism 60, the glue cylinder 20 can be raised and lowered, allowing only the glue scraping operation to be performed in certain areas of the coated surface.

[0058] In some embodiments, the lifting mechanism 60 further includes a lifting guide post 603, which is disposed on the fixed base plate 10 and the lifting plate 601, facilitating smooth and stable movement of the rubber cylinder 20 without wobbling. Specifically, the lower end of the lifting guide post 603 is fixed to the lifting plate 601, and the lifting guide post 603 is slidably connected to the fixed base plate 10, for example, via a linear bearing. There can be multiple lifting guide posts 603, for example, four, which can be spaced apart around the perimeter of the lifting plate 601.

[0059] In some embodiments, a sealing mechanism 70 is also included, which is used to open and close the glue outlet 201. By providing the sealing mechanism 70, the glue outlet 201 can be easily closed and opened. When the glue outlet 201 is closed, the high-viscosity glue in the glue tube 20 can be prevented from flowing out. When the glue outlet 201 is open, the glue can be applied to the surface to be coated.

[0060] In some embodiments, such as Figures 1 to 3The side wall of the glue outlet 201 shown is provided with a sealing groove 2011; the sealing mechanism 70 includes a sealing drive assembly 702 and a sealing plate 701; the sealing drive assembly 702 is disposed on the fixed base plate 10 and connected to the sealing plate 701, and is used to drive the sealing plate 701 to insert into the sealing groove 2011 and move out of the sealing groove 2011, so as to correspondingly close and open the glue outlet 201.

[0061] Specifically, the sealing drive assembly 702 includes a fixed base 7021, a pull rod shaft 7022, a sealing guide post 7023, a preload spring 7024, a pull cable (not shown in the figure), and a sealing actuator 7025.

[0062] The fixed base 7021 is fixed to the fixed base plate 10, and the pull rod shaft 7022 is movably mounted on the fixed base 7021. The sealing guide post 7023 is arranged laterally, with one end fixed to the fixed base 7021 and the other end slidingly engaged with the sealing plate 701. A preload spring 7024 is disposed between the sealing plate 701 and the fixed base 7021, preferably sleeved on the sealing guide post 7023. One end of the cable is connected to the sealing plate 701 and the other end is connected to the pull rod shaft 7022. Preferably, the cable passes over the guide pulley 7026 on the fixed base 7021, and the cable is located between the sealing plate 701 and the guide pulley 7026. The direction of the segment is consistent with the direction of the sealing guide post 7023. The extension direction of the other end of the cable located between the guide pulley 7026 and the pull rod shaft 7022 is consistent with the direction of the pull rod shaft 7022. The sealing actuator 7025 is connected to the pull rod shaft 7022. Specifically, the output end of the sealing actuator 7025 is connected to the pull rod shaft 7022 through the notch slot plate. When the glue opening 201 needs to be closed, the sealing actuator 7025 is in the initial state. The sealing plate 701 closes the glue opening 201 under the elastic force of the preload spring 7024. When the glue opening 201 needs to be opened, the sealing actuator 7025 drives the pull rod shaft 7022 to move, which in turn drives the cable to move. The cable drives the sealing plate 701 to move out of the glue opening 201, thereby realizing the opening of the glue opening 201.

[0063] The present invention also proposes a method for using the curved surface adaptive adhesive applicator 1000.

[0064] The method of using the curved surface adaptive adhesive applicator 1000 according to an embodiment of the present invention includes the following steps:

[0065] S1: Install the glue cartridge 20 containing high-viscosity adhesive onto the floating mechanism 40, and fix the fixed base plate 10 to the end of the moving mechanism 2000, such as a robotic arm, via a quick-release connector. Before this step, high-viscosity adhesive can be injected into the glue cartridge 20 through the glue port 201. After the high-viscosity adhesive is injected, seal the glue port 201 to prevent the high-viscosity adhesive from flowing out of the glue port 201.

[0066] S2: The moving mechanism 2000 drives the curved surface adaptive adhesive applicator 1000 to apply adhesive to the surface to be coated according to the set trajectory. During the adhesive application process, the guide wheel 30 moves in close contact with the surface to be coated under the action of the floating mechanism 40. At the same time, the glue nozzle 201 opens, and the piston 202 moves downward under the action of the piston driver, so that the high-viscosity adhesive in the glue cylinder 20 flows from the glue nozzle 201 to the surface to be coated. The high-viscosity adhesive flowing to the surface to be coated is then scraped evenly by the scraping mechanism 50, which then makes constant contact with the surface to be coated.

[0067] Specifically, by pre-setting the trajectory offset, the spring of the scraper 501 is compressed. Driven by the moving mechanism 2000, the scraper 501 and the guide wheel 30 are in contact with the surface to be coated during the movement, thus overcoming the non-contact situation that may be caused by the movement error of the moving mechanism 2000. Then, the glue outlet 201 is opened, causing the piston 202 to move downwards. The piston 202 pushes the high-viscosity adhesive out through the glue outlet 201. At the glue outlet 201, the high-viscosity adhesive comes into contact with the coated curved surface and adaptively adheres to achieve coverage. At the same time, driven by the moving mechanism 2000, the scraping mechanism 50 moves relative to the coated surface and scrapes the high-viscosity adhesive flowing onto the coated surface evenly. According to the curvature parameters of the coated surface, the moving speed of the curved surface adaptive coating device 1000 and the driving air pressure above the slide are adjusted to keep the glue output of the glue outlet 201 constant. While the glue outlet 201 moves, the scraper 501 on the rear side scrapes the high-viscosity adhesive flowing out of the glue outlet 201 with constant force to achieve uniform coating of the adhesive on the curved surface.

[0068] It should be noted that by setting two adhesive application path widths, the two adhesive application areas after scraping can overlap; by planning equidistant curved adhesive application paths, adhesive can be applied to the entire surface to be coated.

[0069] Since the method of using the surface adaptive adhesive applicator 1000 of this embodiment adopts the surface adaptive adhesive applicator 1000 of this embodiment, the method of using the surface adaptive adhesive applicator 1000 of this embodiment has the same technical effect as the surface adaptive adhesive applicator 1000 of this embodiment, and will not be described again here.

[0070] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A curved surface adaptive adhesive application device, characterized in that, include: Fixed base plate; A glue tube that can move up and down through the fixed substrate, the lower end of the glue tube having a glue outlet for smooth flow of high-viscosity glue, and a piston that can move up and down inside the glue tube; Guide wheels are disposed at the lower end of the glue tube and distributed on the left and right sides of the glue nozzle, for contacting the surface to be coated; A floating mechanism is fixed to the rubber cylinder and is connected to the fixed base plate in a way that allows it to float up and down. The adhesive scraping mechanism is fixed on the fixed substrate and located directly behind the adhesive nozzle, and is used to scrape adhesive in constant force contact with the surface to be coated. It also includes a lifting mechanism, which supports the floating mechanism and is mounted on the fixed base plate, for driving the glue cylinder to rise and fall; on the coating surface, when no glue application operation is required and only a scraping operation is allowed, the lifting mechanism drives the glue cylinder to rise and lift, so that the guide wheel is disengaged from the coating surface, allowing only the scraping mechanism to scrape glue on the coating surface; when glue application is required on the coating surface, the lifting mechanism drives the glue cylinder to fall, so that the guide wheel contacts the coating surface.

2. The adaptive adhesive applicator for curved surfaces according to claim 1, characterized in that, The width of the rubber inlet in the left-right direction is less than the distance in the left-right direction between the guide wheel located on the left and the guide wheel located on the right.

3. The adaptive adhesive applicator for curved surfaces according to claim 1, characterized in that, The floating mechanism includes a floating connecting plate and a plurality of floating compression springs. The floating connecting plate is located below the fixed base plate and is detachably fixed to the rubber cylinder. The plurality of floating compression springs are distributed at intervals along the outer periphery of the rubber cylinder and are disposed between the floating connecting plate and the fixed base plate.

4. The curved surface adaptive adhesive applicator according to claim 2, characterized in that, The adhesive scraping mechanism includes an adhesive scraper and a force control unit. The adhesive scraper is fixed to the fixed substrate through the force control unit. The adhesive scraper is used to scrape adhesive in constant force contact with the surface to be coated.

5. The curved surface adaptive adhesive applicator according to claim 4, characterized in that, The width of the scraper in the left-right direction is greater than the distance in the left-right direction between the guide wheel located on the left and the guide wheel located on the right.

6. The curved surface adaptive adhesive applicator according to claim 3, characterized in that, The lifting mechanism includes a lifting plate and a lifting driver; the lifting plate is located below the floating connecting plate and supports the floating connecting plate, and the lifting driver is fixed on the fixed base plate and is used to drive the lifting plate to move up and down.

7. The adaptive adhesive applicator for curved surfaces according to claim 1, characterized in that, It also includes a sealing mechanism for opening and closing the adhesive opening.

8. The adaptive adhesive applicator for curved surfaces according to claim 7, characterized in that, The adhesive opening has a sealing groove on its side wall; the sealing mechanism includes a sealing drive assembly and a sealing plate; the sealing drive assembly is disposed on the fixed base plate and connected to the sealing plate, and is used to drive the sealing plate to insert into the sealing groove and move out of the sealing groove, so as to correspondingly close and open the adhesive opening.

9. A method of using the adaptive adhesive applicator for curved surfaces as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: The glue cylinder containing high-viscosity adhesive is installed on the floating mechanism, and the fixed base plate is fixed on the moving mechanism through the quick-release connection; S2: The moving mechanism drives the curved surface adaptive adhesive applicator to apply adhesive to the surface to be coated according to a set trajectory. During the adhesive application process, the guide wheel moves in close contact with the surface to be coated under the action of the floating mechanism. At the same time, the glue nozzle opens, and the piston moves downward under the action of the piston driver, so that the high-viscosity adhesive in the glue tube flows from the glue nozzle to the surface to be coated. The high-viscosity adhesive flowing to the surface to be coated is then scraped evenly by the scraping mechanism, which then makes constant contact with the surface to be coated.

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