Decorative paper pasting device, large-format stained paper pasting system and decal technology

Abstract

The invention discloses a decal paper attaching device, a large-format decal paper attaching system and a decal process, and relates to the field of decal, the decal paper attaching device comprises a flexible plate, a driving device and a plurality of first adsorption devices, and the flexible plate is provided with a plurality of adsorption holes; each first adsorption device is opposite to one adsorption hole so as to adsorb the decorative protective layer and enable the decorative protective layer to be attached to the side, away from the first adsorption devices, of the flexible plate, at least one first adsorption device is used for adsorbing the middle of the decorative protective layer, and at least one first adsorption device is used for adsorbing one side, in the width direction, of the decorative protective layer; the at least one first adsorption device is used for adsorbing the other side of the decorative protective layer in the width direction; the driving device is connected with the first adsorption devices and can drive the first adsorption devices to move in the direction towards or away from the flexible plate. The first adsorption devices can apply pressure to the corresponding positions of the flexible plate when moving in the direction towards the flexible plate. According to the invention, the working efficiency is improved, and the attaching quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of decals, and particularly to a decal paper device, a large-format flower paper attaching system and a decal process. Background Art

[0002] In the field of high-end liquor bottle decoration production, the flower paper attaching process is a key link to endow the liquor bottle with a delicate appearance, enhance the market competitiveness of the product and the brand recognition. As Figure 13 and 14 shown, the flower paper 7, which is made by laser 3D relief engraving, as a delicate decorative material, usually consists of multiple layers, including a bottom film 701, a pattern layer 702, a protective film 703 and an adhesive layer for bonding, etc. The process of attaching the flower paper to the liquor bottle mainly includes: soaking the flower paper 7 in water to dissolve the starch glue between the flower paper 7 (including the protective film 703) and the bottom film 701 in water, so as to achieve separation from the bottom film 701; then completing the attachment, water scraping and cleaning (removing the water remaining between the flower paper 7, the protective film 703 and the bottle and around the flower paper 7) of the flower paper 7 (including the protective film 703) within 60 seconds after separation; then sending it into a baking furnace and baking at about 150°C for 150 minutes to make the flower paper 7 fuse with the glass surface, and tearing off the protective film 703 after high-temperature baking.

[0003] The patterns of the large sheets of flower paper for domestic liquor bottles generally include independent Chinese characters, pinyin fonts and other fonts. The relative positions of each element are fixed by the protective film 703, and the area of the flower paper usually covers more than 85% of the entire surface of the liquor bottle. During the actual attachment process, wrinkles are extremely likely to appear at the upper edge of the flower paper 7 ( Figure 13 above the "中" character in

[0004] ), the small pinyin area in the middle and both sides of the bottom edge. Once wrinkles are formed, they cannot be repaired by automated equipment, often resulting in the scrapping of the flower paper 7, and only relying on manual emergency repair.

[0005] Currently, automated decal application technology is mainly suitable for small-format decals. Due to their smaller size, wrinkles are less likely to occur during the application process, resulting in high yield and good process stability. Furthermore, existing automated production lines typically only achieve automatic feeding and water separation of the decal (7-piece sheet), but the final application still relies on manual labor. For large-format decals, skilled workers are entirely responsible for applying and correcting simultaneously, which is not only inefficient but also results in large fluctuations in yield, severely restricting production standardization and capacity expansion. Summary of the Invention

[0006] The purpose of this invention is to provide a decal paper device, a large-format decal paper application system, and a decal process to solve the problems existing in the prior art. It can realize the automatic and flat application of the decorative protective layer on the bottle body, improve work efficiency, improve the consistency of application, and ensure the quality of application.

[0007] To achieve the above objectives, the present invention provides the following solution: This invention provides a decal paper device, including a flexible plate, a driving device, and a plurality of first adsorption devices disposed on the same side of the flexible plate. The flexible plate has a plurality of adsorption holes. Each first adsorption device is disposed opposite to one of the adsorption holes to adsorb a decorative protective layer of the decal paper and attach the decorative protective layer to the side of the flexible plate away from the first adsorption device. At least one first adsorption device is used to adsorb the middle portion of the decorative protective layer, at least one first adsorption device is used to adsorb one side of the decorative protective layer in the width direction, and at least one first adsorption device is used to adsorb the other side of the decorative protective layer in the width direction. The driving device is connected to each of the first adsorption devices and can drive each of the first adsorption devices to move in a direction toward or away from the flexible plate. When each of the first adsorption devices moves in the direction toward the flexible plate, it can apply pressure to a corresponding position on the flexible plate.

[0008] In one embodiment, each of the first adsorption devices includes an adsorption nozzle and a buffer mechanism. Each adsorption nozzle is fixedly connected to one end of the corresponding buffer mechanism, and the other end of each buffer mechanism is connected to the driving device. When both ends of each buffer mechanism are subjected to external loads, each buffer mechanism can undergo elastic compression deformation along its length.

[0009] In one embodiment, the device further includes a visual positioning device and a robotic arm. The driving device is connected to the robotic arm, and the visual positioning device is connected to the robotic arm. The robotic arm is capable of driving the first adsorption device with the decorative protective layer adsorbed on it to move to a set position so that the decorative protective layer is directly opposite the bottle body.

[0010] This embodiment provides a large-format decal application system, including a vacuum plate and the decal application device. The vacuum plate can adsorb the base film of the decal after it has been soaked in sol. The driving device is used to connect with a robot arm. The robot arm can drive the driving device and the first adsorption device to the vacuum plate, and the first adsorption device can adsorb the decorative protective layer of the decal. The robot arm can drive the first adsorption device to move away from the vacuum plate.

[0011] In one embodiment, the working surface of the vacuum plate is provided with multiple drainage grooves.

[0012] In one embodiment, a flipping device is also included. The vacuum plate is connected to the flipping device, which can drive the vacuum plate to flip so that the working surface faces downward and can drive the working surface to reset. The vacuum plate can blow air onto the bottom film to make the bottom film fall off the vacuum plate.

[0013] In one embodiment, at least one soaking device is also included. Each soaking device includes a water tank, a permeable plate, and a lifting device. The permeable plate is connected to the lifting device. The upper surface of the permeable plate is used to place the decorative paper. The lifting device can drive the permeable plate to descend so that the decorative paper is soaked in the water tank. The lifting device can also drive the permeable plate to rise so that the decorative paper soaked in the water tank can be removed.

[0014] In one embodiment, a transport and transplanting mechanism is further included. The transport and transplanting mechanism includes a motion mechanism and a second adsorption device connected to the motion mechanism. The second adsorption device is used to adsorb the degummed degummed depaper. The motion mechanism can drive the second adsorption device with the degummed depaper adsorbed to a set position two so that the degummed depaper contacts the working surface of the vacuum plate.

[0015] In one embodiment, both the first adsorption device and the second adsorption device are vacuum suction cup devices.

[0016] This embodiment provides a decal application process based on the decal application device, including the following steps: The decorative protective layer is adsorbed onto the flexible board away from the first adsorption device by multiple first adsorption devices. The adsorption method of the first adsorption device includes: adsorbing the middle part of the decorative protective layer by at least one first adsorption device, adsorbing one side of the decorative protective layer in the width direction by at least one first adsorption device, and adsorbing the other side of the decorative protective layer in the width direction by at least one first adsorption device. The driving device drives the first adsorption device to move toward the flexible plate, so that the middle part of the decorative protective layer contacts the middle part of the area to be attached to the bottle; the first adsorption devices on both sides of the width direction of the decorative protective layer are degaussed, and the driving device drives the first adsorption devices on both sides of the decorative protective layer to move toward the bottle, so that the flexible plate deforms to adapt to the bottle, until the flexible plate is attached to the bottle; the first adsorption device in the middle of the decorative protective layer is degaussed.

[0017] The present invention achieves the following technical effects compared to the prior art: This invention provides a decal application device, a large-format decal application system, and a decal application process. The device includes a flexible plate, a driving device, and multiple first adsorption devices disposed on the same side of the flexible plate. The flexible plate has multiple adsorption holes. Each first adsorption device is positioned opposite an adsorption hole to adsorb the decorative protective layer of the decal and adhere it to the side of the flexible plate away from the first adsorption device. At least one first adsorption device adsorbs the middle portion of the decorative protective layer, at least one first adsorption device adsorbs one side of the decorative protective layer in its width direction, and at least one first adsorption device adsorbs the other side of the decorative protective layer in its width direction. The driving device is connected to each first adsorption device and can drive each first adsorption device to move in a direction toward or away from the flexible plate. When each first adsorption device moves in the direction toward the flexible plate, it can apply pressure to the corresponding position on the flexible plate.

[0018] The first adsorption device adsorbs the decorative protective layer at its center and on both sides in the width direction. A driving device moves the first adsorption device towards the flexible plate, bringing the center of the decorative protective layer into contact with and maintaining contact with the center of the area to be adhered to on the bottle. The vacuum is then broken at the first adsorption devices on both sides of the decorative protective layer in the width direction, and the driving device moves them closer to the bottle. The flexible plate is elastic and can undergo recoverable deformation under external force. When the two sides of the flexible plate are pressed against the curved surface to be adhered to, the flexible plate can deform to adapt to the container, such as the bottle, until the flexible plate adheres to the bottle. The two wings of the decorative protective layer can bend with the bending of the flexible plate to adhere smoothly to the curved surface of the bottle or other container. The vacuum is then broken at the first adsorption device in the center of the decorative protective layer, separating the center of the decorative protective layer from the first adsorption device, completing the application of the decorative protective layer. This embodiment enables automatic and smooth application of the decorative protective layer to the bottle, improving work efficiency, consistency, and quality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 Schematic diagram of the decal paper body provided in Example 1 Figure 1 ; Figure 2 Schematic diagram of the decal paper body provided in Example 1 Figure 2 ; Figure 3 Schematic diagram of the decal paper body provided in Example 1 Figure 3 ; Figure 4 Schematic diagram of the decal paper body provided in Example 1 Figure 4 ; Figure 5 Schematic diagram of the decal paper body provided in Example 1 Figure 5 ; Figure 6 Schematic diagram of the decal paper body provided in Example 1 Figure 6 ; Figure 7 Schematic diagram of the decal paper body provided in Example 1 Figure 7 ; Figure 8 This is a schematic diagram of the bottom structure of the decal paper body provided in Example 1; Figure 9 A schematic diagram of the top structure of the decal paper body provided in Example 1; Figure 10 This is a schematic diagram of the decal paper device provided in Embodiment 1; Figure 11 This is a schematic diagram of the paper separation mechanism provided in Example 1; Figure 12 This is a schematic diagram of the soaking device provided in Example 1; Figure 13 This is a front view of the decorative paper; Figure 14 for Figure 13 The right view; In the diagram: 100, decal application device; 1, flexible plate; 101, adsorption hole; 2, driving device; 3, first adsorption device; 4, vacuum plate; 401, working surface; 402, draining tank; 5, flipping device; 6, soaking device; 601, water tank; 602, permeable plate; 603, lifting device; 7, decal; 701, base film; 702, pattern layer; 703, protective film. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "center," "longitudinal," "transverse," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "clockwise," and "counterclockwise," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, it should be noted that in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The purpose of this invention is to provide a decal paper device, a large-format decal paper application system, and a decal process to solve the problems existing in the prior art. It can realize the automatic and flat application of the decorative protective layer on the bottle body, improve work efficiency, improve the consistency of application, and ensure the quality of application.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1 like Figures 1-12As shown, this embodiment provides a decal paper device 100, including a flexible plate 1, a driving device 2, and a plurality of first adsorption devices 3 disposed on the same side of the flexible plate 1. The flexible plate 1 is provided with a plurality of adsorption holes 101, which are through holes. Each first adsorption device 3 is disposed opposite to an adsorption hole 101 to adsorb the decorative protective layer of the decal paper 7 and attach the decorative protective layer to the side of the flexible plate 1 away from the first adsorption device 3. At least one first adsorption device 3 is used to adsorb the middle part of the decorative protective layer, at least one first adsorption device 3 is used to adsorb one side of the decorative protective layer in the width direction, and at least one first adsorption device 3 is used to adsorb the other side of the decorative protective layer in the width direction. The driving device 2 is connected to each first adsorption device 3 and can drive each first adsorption device 3 to move in a direction toward or away from the flexible plate 1. When each first adsorption device 3 moves in the direction toward the flexible plate 1, it can apply pressure to the corresponding position of the flexible plate 1.

[0026] It should be noted that the decorative protective layer includes a pattern layer 702 and a protective film 703.

[0027] The first adsorption device 3 adsorbs the decorative protective layer at its center and on both sides in the width direction. Driven by the driving device 2, the first adsorption device 3 moves towards the flexible plate 1, bringing the center of the decorative protective layer into contact with and maintaining contact with the center of the area to be adhered to on the bottle. The vacuum on both sides of the first adsorption device 3 in the width direction of the decorative protective layer is broken, and the driving device 2 moves the first adsorption devices 3 on both sides of the decorative protective layer closer to the bottle. The flexible plate 1 is elastic and can undergo recoverable deformation under external force. When both sides of the flexible plate 1 are pressed towards the curved surface to be adhered to, the flexible plate 1 can deform to adapt to the container, such as the bottle, until the flexible plate 1 adheres to the bottle. The two wings of the decorative protective layer can bend with the bending of the flexible plate 1 to adhere smoothly to the curved surface of the bottle or other container. The vacuum on the first adsorption device 3 in the center of the decorative protective layer is broken, separating the center of the decorative protective layer from the first adsorption device 3, completing the adhesion of the decorative protective layer. This embodiment enables automatic and smooth adhesion of the decorative protective layer to the bottle, improving work efficiency, consistency of adhesion, and ensuring the quality of adhesion.

[0028] In some embodiments, each first adsorption device 3 includes an adsorption nozzle and a buffer mechanism. Each adsorption nozzle is fixedly connected to one end of the corresponding buffer mechanism, and the other end of each buffer mechanism is connected to the driving device 2. When each buffer mechanism is subjected to an external load, it can undergo elastic compression deformation along its length. The driving device 2 can drive multiple first adsorption devices 3 to move towards the bottle body simultaneously. The first adsorption device 3 in the middle of the decorative protective layer first contacts the outermost convex area of ​​the bottle body's curved surface (e.g., the highest point of the bottle body). As the driving device 2 continues to move closer to the bottle body, the outer first adsorption device 3 applies pressure to the outer side of the flexible plate 1, causing the flexible plate 1 to deform. Meanwhile, the buffer mechanism of the middle first adsorption device 3 is compressed, allowing the flexible plate 1 to adapt to the curvature of the bottle, ensuring that the decal 7 can completely conform to the curved surface of the bottle, thereby guaranteeing the decal quality.

[0029] In some embodiments, the buffer mechanism includes a suction rod and a spring fixedly connected to the suction rod. The suction nozzle is disposed at the opening of the suction rod and can be connected to the suction rod by means of sliding fit or other means. The inner side of the suction nozzle is fixedly connected to the spring. The suction nozzle can float upward when subjected to an external force toward the spring, and when the external force disappears, the suction nozzle can return to its original position under the elastic force of the spring.

[0030] In some embodiments, a visual positioning device and a robotic arm are also included. The driving device 2 is connected to the robotic arm, and the visual positioning device is also connected to the robotic arm. The robotic arm can drive the first adsorption device 3, which has the decorative protective layer adsorbed, to move to a set position so that the decorative protective layer is directly opposite the bottle body. When the robotic arm moves the driving device 2 and the first adsorption device 3, the visual positioning device can acquire images of the decal device 100 and the bottle body. When the decal device 100 is directly above the bottle body, the robotic arm stops outputting, and the first adsorption device 3 stops moving. It should be noted that this embodiment is not limited to using a robot to drive the driving device 2; other motion mechanisms capable of moving the driving device 2 to a designated position, such as a multi-dimensional motion platform, can also be used.

[0031] In some embodiments, the flexible plate 1 is a rubber sheet, and the part of the rubber sheet corresponding to the first adsorption device 3 is perforated to ensure that the first adsorption device 3 can absorb the decal 7 through the membrane.

[0032] In some embodiments, the drive device 2 is a cylinder, which is connected to the first adsorption device 3 via a fixed sheet metal. The lifting and lowering of the first adsorption device 3 is controlled by controlling the lifting and lowering of the fixed sheet metal. The upright plate of the fixed sheet metal has cutouts to reduce weight.

[0033] In some embodiments, the shape of the flexible plate 1 is similar to or the same as the shape of the decorative protective layer.

[0034] It should be noted that the width direction of the decorative protective layer corresponds to the circumferential direction of the bottle body. The specific location and number of the first adsorption devices 3 on both sides of the width direction of the decorative protective layer can be adjusted according to the size of the decorative protective layer and the deformation performance of the flexible plate 1. For example, one first adsorption device 3 can be set at each end of the middle area of ​​the decorative paper 7, and two first adsorption devices 3 can be set along the outer edge of both sides of the width direction of the decorative paper 7. As long as it can be ensured that the flexible plate 1 can be flat and completely adhered to the bottle body under the pressure of the first adsorption devices 3 on the outside of the decorative protective layer.

[0035] Example 2 This embodiment provides a large-format decal application system, including a vacuum plate 4 and the decal application device 100 from Embodiment 1. The vacuum plate 4 can adsorb the base film 701 of the decal 7 after it has been soaked in sol. A driving device 2 is used to connect with a robotic arm. The robotic arm can drive the driving device 2 and the first adsorption device 3 to the vacuum plate 4, and the first adsorption device 3 can adsorb the decorative protective layer of the decal 7. The robotic arm can drive the first adsorption device 3 to move away from the vacuum plate 4. The decal 7 after it has been soaked in sol is placed on the vacuum plate 4. The vacuum plate 4 and the first adsorption device 3 adsorb the base film 701 and the decorative protective layer, respectively. When the first adsorption device 3 moves away from the vacuum plate 4, the base film 701 and the decorative protective layer separate from each other.

[0036] In some embodiments, the working surface 401 of the vacuum plate 4 is provided with multiple drainage grooves 402. The drainage grooves 402 facilitate the quick removal of excess moisture from the surface of the decal 7, which is convenient for subsequent operations.

[0037] In some embodiments, a flipping device 5 is also included. The vacuum plate 4 is connected to the flipping device 5, which can drive the vacuum plate 4 to flip so that the working surface 401 faces downwards and can also drive the working surface 401 to return to its original position. The vacuum plate 4 can blow air onto the bottom film 701 to make the bottom film 701 fall off the vacuum plate 4. After the first adsorption device 3 removes the decorative protective layer, the flipping device 5 drives the vacuum plate 4 to flip, and then the vacuum plate 4 switches to the blowing mode to blow off the bottom film 701. The flipping cylinder drives the vacuum plate 4 to rotate back to its original position, preparing for the next decal separation operation.

[0038] In some embodiments, at least one soaking device 6 is also included. Each soaking device 6 includes a water tank 601, a permeable plate 602, and a lifting device 603. The permeable plate 602 is connected to the lifting device 603. The upper surface of the permeable plate 602 is used to place the decorative paper 7. The lifting device 603 can drive the permeable plate 602 down to soak the decorative paper 7 in the water tank 601. The lifting device 603 can also drive the permeable plate 602 up to remove the decorative paper 7 soaked in the water tank 601.

[0039] In some embodiments, a transport and transplanting mechanism is also included. The transport and transplanting mechanism includes a motion mechanism and a second adsorption device connected to the motion mechanism. The second adsorption device is used to adsorb the degummed de-adhesive paper 7. The motion mechanism can drive the second adsorption device with the adsorbed paper 7 to move to a set position 2 so that the paper 7 contacts the working surface 401 of the vacuum plate 4.

[0040] In some embodiments, the permeable plate 602 is connected to the lifting plate, which is connected to the lifting device 603.

[0041] In some embodiments, both the first adsorption device 3 and the second adsorption device are vacuum suction cup devices. The lifting device 603 and the tilting device 5 are both cylinders.

[0042] Example 3 This embodiment provides a decal application process based on the decal application device 100 in Embodiment 1, including the following steps: The decorative protective layer is adsorbed onto the side of the flexible plate 1 away from the first adsorption device 3 by multiple first adsorption devices 3. The adsorption method of the first adsorption device 3 includes: adsorbing the middle part of the decorative protective layer by at least one first adsorption device 3, adsorbing one side of the decorative protective layer in the width direction by at least one first adsorption device 3, and adsorbing the other side of the decorative protective layer in the width direction by at least one first adsorption device 3; driving the first adsorption device 3 to move in the direction toward the flexible plate 1 by the driving device 2, so that the middle part of the decorative protective layer contacts the middle part of the area to be attached to the bottle; breaking the vacuum of the first adsorption devices 3 on both sides of the width direction of the decorative protective layer; driving the first adsorption devices 3 on both sides of the decorative protective layer to move toward the bottle by the driving device 2 and causing the flexible plate 1 to deform to adapt to the bottle until the flexible plate 1 is attached to the bottle; breaking the vacuum of the first adsorption device 3 in the middle of the decorative protective layer. The first adsorption device 3 in the middle presses the decorative protective layer onto the bottle body. The first adsorption devices 3 on both sides first break the vacuum, and through the deformation of the flexible plate 1, the decorative protective layer is attached to the bottle body along the curvature of the surface. After the two sides are attached, the first adsorption device 3 in the middle breaks the vacuum and detaches from the decorative protective layer. This embodiment can achieve automatic and flat attachment of the decorative protective layer to the bottle body, improving work efficiency, consistency of attachment, and ensuring the quality of attachment.

[0043] The decal process provided in this embodiment specifically includes: I. Soaking and Separation 1. Preparation for placement: Place the decal 7 with the bottom film 701 on the permeable plate 602. The permeable plate 602 is provided with dense round holes to ensure that the decal 7 is in full contact with water.

[0044] 2. Soaking and dissolving: The lifting device 603 retracts, causing the lower lifting plate and the permeable plate 602 to descend together, so that the decal 7 is completely immersed in the water tank 601. Water can pass through the round holes of the permeable plate 602 to fully soak and dissolve the corn starch adhesive between the decorative protective layer and the bottom film 701, preparing for separation.

[0045] 3. Lifting up for drainage: After soaking, the lifting device 603 extends to lift the permeable plate 602 and the decorative paper 7 out of the water.

[0046] II. Transfer of decorative paper 7 The suction cups on the transfer mechanism pick up the soaked decal 7 from the permeable plate 602 and transfer it to the vacuum plate 4 of the separation mechanism, awaiting subsequent separation and attachment operations.

[0047] III. Separation of the decorative protective layer from the base film 701 1. Preparation and Draining: Place the soaked decal 7 (together with the base film 701 / release paper) on the vacuum plate 4. The vacuum plate 4 is equipped with multiple drainage grooves 402, which can quickly drain excess water from the surface of the decal 7, facilitating subsequent operations.

[0048] 2. Fixing and Separation: The suction cups on the vacuum plate 4 generate negative pressure, firmly adhering to the base film 701. Subsequently, the robotic arm operates the application drive device 2 to move above the decal 7 and pick it up. Through the opposing motions of suction and pickup, the decal 7 and the base film 701 are easily and smoothly separated.

[0049] 3. Recovery of bottom film 701: After separation, the tilting cylinder drives the vacuum plate 4 to rotate 180 degrees. At this time, the suction cup of the vacuum plate 4 switches to the blowing mode, blowing the bottom film 701 off.

[0050] 4. Reset and standby: After the bottom film 701 falls off, the flipping cylinder drives the vacuum plate 4 to rotate back to its original position, preparing for the next paper separation operation.

[0051] IV. 7 stickers of decorative paper 1.1 The robotic arm first moves the decal body (flexible plate 1, driving device 2, first adsorption device 3) to a position above the decal 7, and then presses down the device. The first adsorption device 3 generates negative pressure to suck up air, and adsorbs the decal 7 that has been soaked in water through the holes on the flexible plate 1.

[0052] 1.2. Use a visual positioning device to accurately locate the position of the decal 7.

[0053] 1.3 After the first adsorption device 3 adsorbs the decorative protective layer of the decal 7, the robotic arm moves the drive device 2 above the bottle. When the decorative protective layer contacts the highest point of the bottle's curved surface, the middle part is applied first; Then, the first adsorption device 3 on the left and right sides breaks the vacuum (blowing air) to reduce the adsorption force between the decal 7 and the flexible plate 1. The robot arm continues to press down the drive device 2, so that the two wings of the decal 7 come into contact with the bottle body through water and are flatly attached to the curved surface of the bottle. During this process, the first adsorption device 3 can blow air to ensure that the decal 7 and the flexible plate 1 are completely separated. Once the decal 7 is completely attached to the bottle, the two first adsorption devices 3 in the middle are then degassed (blown air) to completely separate the devices from the decal 7.

[0054] In this embodiment, the entire process utilizes vacuum adsorption and the flexibility of the flexible plate 1 to ensure that the decal 7 can completely conform to the curved surface of the bottle, preventing quality problems such as lifting or wrinkling. Throughout the pressing process, the buffer mechanism built into the first adsorption device 3 can adapt to changes in the curvature of the bottle through the elastic extension and contraction of the spring, ensuring that the first adsorption device 3 always maintains a stable fit, thereby guaranteeing the quality of the decal.

[0055] This embodiment addresses the following key challenges faced by current decal pasting processes: 1. Difficult to peel off: The decal 7 is bonded to the bottom release paper by corn starch, and it needs to be soaked thoroughly to dissolve the starch before it can be peeled off, which is a complicated preparation process.

[0056] 2. Fragile during transfer: The paper decals 7 are very soft after being soaked in water, and are very easy to fold or curl during transfer, resulting in defective finished products.

[0057] 3. Adhesion Challenge: When applying the decal to the bottle, it is difficult to position it accurately, and wrinkles, curling edges and air bubbles are also likely to occur.

[0058] 4. Size limitations: Existing automated decal devices on the market can usually only handle decals 70mm x 65mm in size, while this process can handle decals 7 in larger sizes, up to 79.5mm x 110mm.

[0059] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A decal application device, characterized in that: The device includes a flexible plate, a driving device, and multiple first adsorption devices disposed on the same side of the flexible plate. The flexible plate has multiple adsorption holes. Each first adsorption device is positioned opposite one of the adsorption holes to adsorb the decorative protective layer of the decal and attach the decorative protective layer to the side of the flexible plate away from the first adsorption device. At least one first adsorption device adsorbs the middle portion of the decorative protective layer, at least one first adsorption device adsorbs one side of the decorative protective layer in its width direction, and at least one first adsorption device adsorbs the other side of the decorative protective layer in its width direction. The driving device is connected to each of the first adsorption devices and can drive each of the first adsorption devices to move in a direction toward or away from the flexible plate. When each of the first adsorption devices moves in the direction toward the flexible plate, it can apply pressure to the corresponding position on the flexible plate.

2. The decal device according to claim 1, characterized in that: Each of the first adsorption devices includes an adsorption nozzle and a buffer mechanism. Each adsorption nozzle is fixedly connected to one end of the corresponding buffer mechanism, and the other end of each buffer mechanism is connected to the driving device. When the two ends of each buffer mechanism are subjected to external loads, each buffer mechanism can undergo elastic compression deformation along its length.

3. The decal device according to claim 1, characterized in that: It also includes a visual positioning device and a robotic arm. The driving device is connected to the robotic arm, and the visual positioning device is connected to the robotic arm. The robotic arm can drive the first adsorption device with the decorative protective layer adsorbed on it to move to a set position so that the decorative protective layer is directly opposite the bottle body.

4. A large-format decorative paper pasting system, characterized in that: The device includes a vacuum plate and a decal paper device as described in any one of claims 1 to 3. The vacuum plate is capable of adsorbing the base film of the decal paper after it has been soaked in sol. The driving device is used to connect with a robotic arm. The robotic arm is capable of driving the driving device and the first adsorption device to move to the vacuum plate, and the first adsorption device is capable of adsorbing the decorative protective layer of the decal paper. The robotic arm is capable of driving the first adsorption device to move away from the vacuum plate.

5. The large-format decal pasting system according to claim 4, characterized in that: The working surface of the vacuum plate is provided with multiple drainage grooves.

6. The large-format decal pasting system according to claim 5, characterized in that: It also includes a flipping device, the vacuum plate is connected to the flipping device, the flipping device can drive the vacuum plate to flip so that the working surface is facing down and can drive the working surface to return to its original position, the vacuum plate can blow air onto the bottom film so that the bottom film falls off the vacuum plate.

7. The large-format decal pasting system according to claim 5, characterized in that: It also includes at least one soaking device, each of which includes a water tank, a permeable plate, and a lifting device. The permeable plate is connected to the lifting device. The upper surface of the permeable plate is used to place the decal. The lifting device can drive the permeable plate down to soak the decal in the water tank. The lifting device can also drive the permeable plate up to remove the decal soaked in the water tank.

8. The large-format decal pasting system according to claim 7, characterized in that: It also includes a transport and transplanting mechanism, which includes a motion mechanism and a second adsorption device connected to the motion mechanism. The second adsorption device is used to adsorb the degummed depaper after soaking. The motion mechanism can drive the second adsorption device with the degummed depaper adsorbed to move to a set position so that the degummed depaper contacts the working surface of the vacuum plate.

9. The large-format decal pasting system according to claim 8, characterized in that: Both the first adsorption device and the second adsorption device are vacuum suction cup devices.

10. A decal application process based on the decal application device according to any one of claims 1 to 3, characterized in that: Includes the following steps: The decorative protective layer is adsorbed onto the flexible board away from the first adsorption device by multiple first adsorption devices. The adsorption method of the first adsorption device includes: adsorbing the middle part of the decorative protective layer by at least one first adsorption device, adsorbing one side of the decorative protective layer in the width direction by at least one first adsorption device, and adsorbing the other side of the decorative protective layer in the width direction by at least one first adsorption device. The driving device drives the first adsorption device to move toward the flexible plate, so that the middle part of the decorative protective layer contacts the middle part of the area to be attached to the bottle; the first adsorption devices on both sides of the width direction of the decorative protective layer are degaussed, and the driving device drives the first adsorption devices on both sides of the decorative protective layer to move toward the bottle, so that the flexible plate deforms to adapt to the bottle, until the flexible plate is attached to the bottle; the first adsorption device in the middle of the decorative protective layer is degaussed.

Images