Floating gluing device and method

Abstract

The invention provides a floating gluing device and method, and relates to the field of gluing. The floating gluing device comprises a base, a floating mechanism and a pressure head mechanism, wherein the base at least can move in the horizontal direction; the floating mechanism is movably arranged at the lower end of the base and can float in the vertical direction relative to the base; the pressure head mechanism is arranged at the lower end of the floating mechanism and floats along with the floating mechanism; the pressing head mechanism comprises a pressing head and a gluing head arranged on one side of the pressing head, the pressing head is used for being connected to a to-be-glued face in a pressing mode, and the gluing head is used for gluing the to-be-glued face; and the gluing head is higher than the pressure head. The floating mechanism and the pressing head mechanism are arranged, the floating mechanism drives the gluing head to adjust the height in a self-adaptive mode, and the problems that in the prior art, due to the fact that the flatness of a to-be-glued face is out of tolerance, gluing is uneven, and glue is broken are solved.

Description

Technical Field

[0001] This invention belongs to the field of adhesive coating technology, and in particular relates to a floating adhesive coating device and method. Background Technology

[0002] When assembling batteries, adhesive needs to be applied to the bottom of the cells and the surface of the battery pack casing. The adhesive is not only used to bond the cells to the casing for stable fixation, but some thermally conductive adhesives can also transfer the heat of the cells to the liquid cooling plate to achieve cell temperature control. Therefore, the uniformity of the adhesive coating thickness is a key control point in assembly.

[0003] Due to the flatness of the battery pack casing, uneven thickness of the adhesive coating often occurs, which in turn affects the adhesive contact area between the cell and the casing (required to be ≥95%), damaging the structural stability of the battery pack and the thermal conductivity of the cell.

[0004] The existing glue applicator's applicator head faces the shell with excessive flatness, which can easily cause the applicator head to move away from or press against the workpiece, resulting in uneven glue application and glue breakage, which seriously affects the glue application quality and production efficiency. Summary of the Invention

[0005] In view of this, the present invention provides a floating adhesive application device and method, which aims to solve the problem of uneven adhesive application by the adhesive application head in the prior art.

[0006] The technical solution of this invention is implemented as follows:

[0007] This invention provides a floating adhesive applicator, which includes a base, a floating mechanism, and a pressure head mechanism. The base is capable of moving at least in the horizontal direction. The floating mechanism is movably disposed at the lower end of the base and can float relative to the base in the vertical direction. The pressure head mechanism is disposed at the lower end of the floating mechanism and floats with the floating mechanism. The pressure head mechanism includes a pressure head and an adhesive applicator disposed on one side of the pressure head. The pressure head is used to press against the surface to be coated, and the adhesive applicator is used to apply adhesive to the surface to be coated. The height of the adhesive applicator is higher than the height of the pressure head.

[0008] In one embodiment, the floating mechanism includes: a connecting component, the upper end of which is movably connected to the base and the lower end of which is connected to the pressure head mechanism; and an elastic element, which is sleeved on the connecting component and the two ends of the elastic element respectively abut against the base and the connecting component, for providing elastic restoring force for the floating mechanism.

[0009] In one embodiment, the connecting assembly includes a connector, the connector including a connecting body and a bearing portion disposed on the outer peripheral wall of the connecting body, the connecting body extending in a vertical direction; the elastic element abutting between the base and the bearing portion, the upper end of the connecting body being movably connected to the base, and the lower end of the connecting body being connected to the pressure head mechanism.

[0010] In one embodiment, the lower end of the base has a downward-opening limiting groove, and the base is provided with a limiting part at the opening of the limiting groove to block the opening of the limiting groove; the upper end of the connecting column extends upward into the limiting groove; the connecting assembly further includes a suspension ring, which is suspended above the limiting part; the elastic element abuts between the limiting part and the bearing part.

[0011] In one embodiment, the pressure head is disposed around the outside of the glue applicator, and the pressure head is rotatably connected to the connecting body, so that the pressure head can rotate around the glue applicator.

[0012] In one embodiment, the glue applicator is connected to the lower end of the connecting body; the pressure head mechanism further includes a rotating cylinder, which is movably sleeved around the periphery of the connecting body, and the pressure head is connected to the rotating cylinder.

[0013] In one embodiment, the pressure head mechanism further includes a first driving member disposed on the connecting body, and a first gear and a second gear meshing with each other; the fixed end of the first driving member is connected to the connecting body, and the power end of the first driving member is driven to be connected to the first gear; the pressure head is connected to the rotating drum through the second gear.

[0014] In one embodiment, the bottom end of the pressure head is rotatably fitted with a ball bearing, which is used to press against the surface to be coated with adhesive.

[0015] This invention also provides a floating adhesive application method based on a floating adhesive application device. The floating adhesive application device includes a base, a floating mechanism, and a pressure head mechanism. The base is capable of moving at least in the horizontal direction. The floating mechanism is movably disposed at the lower end of the base and can float vertically relative to the base. The pressure head mechanism is disposed at the lower end of the floating mechanism and floats with the floating mechanism. The pressure head mechanism includes a pressure head and an adhesive application head disposed on one side of the pressure head. The pressure head is used to press against the surface to be coated, and the adhesive application head is used to apply adhesive to the surface to be coated. The height of the adhesive application head is higher than the height of the pressure head. The method includes: starting the floating adhesive applicator and controlling the pressure head of the pressure head mechanism to abut against the surface to be coated; controlling the base to drive the floating mechanism and the pressure head mechanism to move horizontally at a constant speed along a preset adhesive application trajectory, and simultaneously starting the adhesive applicator head to apply adhesive to the surface to be coated; detecting the floating height of the floating mechanism relative to the base in real time through a displacement measuring component and feeding the floating height information back to the control system in real time; the control system analyzes and judges the unevenness changes of the surface to be coated based on the floating height information, and then adaptively adjusts the adhesive output of the adhesive applicator head to match the height changes of the surface to be coated.

[0016] In one embodiment, the floating adhesive application method further includes: during the horizontal movement and adhesive application of the floating adhesive application device along a preset adhesive application trajectory, the pressure head is located in front of the forward direction of the adhesive application head; the horizontal distance between the adhesive application head and the pressure head and the horizontal movement speed of the base are pre-calibrated, and a delay time is calculated based on the horizontal distance and the horizontal movement speed; the control system adjusts the adhesive dispensing amount of the adhesive application head after the displacement measurement component detects the floating height information and completes the judgment based on the delay time, so that when the adhesive application head reaches the detection position, the adhesive dispensing amount has been adjusted to the appropriate state.

[0017] This invention provides a floating mechanism and a pressure head mechanism on a floating coating device. The floating mechanism drives the coating head to adaptively adjust its height, which effectively solves the problems of uneven coating and glue breakage caused by the flatness of the surface to be coated in the prior art. It significantly improves the coating quality and production efficiency, and is especially suitable for battery packaging and other scenarios where the uniformity of coating thickness is required. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0019] Figure 1 This is an overall cross-sectional view of the floating adhesive applicator provided by the present invention; Figure 2 A cross-sectional view of the connecting components of the floating adhesive applicator provided by the present invention.

[0020] Explanation of reference numerals in the attached figures: 100. Floating adhesive applicator; 1. Base; 11. Limiting groove; 12. Limiting part; 2. Floating mechanism; 21. Connecting assembly; 211. Connecting piece; 2111. Connecting body; 2112. Bearing part; 2113. Suspension ring; 22. Elastic element; 3. Press head mechanism; 31. Press head; 311. Ball bearing; 32. Adhesive applicator head; 33. Rotary drum; 34. First driving component; 35. First gear; 36. Second gear; 200. Surface to be coated. 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] During battery pack assembly, adhesive needs to be applied to the bottom of the cells and the surface of the battery pack casing. The adhesive not only bonds the cells to the casing for stable fixation, but some thermally conductive adhesives can also transfer heat from the cells to the liquid cooling plate, enabling cell temperature control. Therefore, the uniformity of the adhesive coating thickness is a critical control point in assembly. Due to the flatness of the battery pack casing, uneven adhesive coating thickness often occurs, which affects the adhesive contact area between the cells and the casing (required to be ≥95%), impairing the structural stability of the battery pack and the thermal conductivity of the cells.

[0025] The existing glue applicator's applicator head faces the shell with excessive flatness, which can easily cause the applicator head to move away from or press against the workpiece, resulting in uneven glue application and glue breakage, which seriously affects the glue application quality and production efficiency.

[0026] In view of this, embodiments of the present invention provide a floating adhesive applicator, which aims to solve the problem of uneven adhesive application by the adhesive applicator head in the prior art.

[0027] Please see Figure 1 The floating adhesive applicator 100 includes a base 1, a floating mechanism 2, and a pressure head mechanism 3. These components work together to achieve adaptive floating adhesive application. The specific structure is as follows: The base 1 is used to connect external drive equipment and serves as the installation support base for the entire device. It can move at least in the horizontal direction to drive the entire floating glue applicator 100 to move smoothly along the preset glue applicator trajectory.

[0028] The floating mechanism 2 is movably mounted at the lower end of the base 1, and can flexibly float in the vertical direction relative to the base 1. This floating characteristic can directly compensate for the flatness deviation of the surface to be coated 200 (the surface of the battery pack casing), allowing the pressure head mechanism 3 below to adapt to the height changes of the surface to be coated 200 in real time, reducing poor contact caused by casing deformation. There are several ways to float the floating mechanism 2 relative to the base 1, such as by setting a sliding guide structure between the base 1 and the floating mechanism 2 in conjunction with an elastic reset component, or by using a flexible hinge connection, etc.

[0029] The pressure head mechanism 3 is located at the lower end of the floating mechanism 2 and floats up and down synchronously with the floating mechanism 2. Its core function is to achieve stable pressing and glue application to the surface 200 to be glued. The pressure head mechanism 3 includes a pressure head 31 and a glue application head 32. The pressure head 31 is used to directly press against the surface 200 to be glued. Through close contact with the surface 200, it senses the height change of the surface 200 in real time and drives the floating mechanism 2 to float accordingly. The glue application head 32 is located on one side of the pressure head 31 and is used to squeeze glue onto the surface 200 to complete the glue application operation.

[0030] Specifically, the height of the applicator head 32 is set higher than that of the pressure head 31. This design allows the pressure head 31 to contact the surface 200 to be coated before the applicator head 32 begins the coating operation, providing a stable reference height for the applicator head 32. This avoids a rigid collision between the applicator head 32 and the surface 200 to be coated, while ensuring that an appropriate coating gap is maintained between the applicator head 32 and the surface 200 to be coated, laying the foundation for uniform coating in the future.

[0031] The specific adhesive application process is as follows: When the base 1 moves the entire device horizontally along the preset adhesive application trajectory, the pressure head 31 first contacts the surface 200 to be coated and slides on its surface. Since the height of the pressure head 31 is lower than that of the adhesive application head 32, the adhesive application head 32 has not yet contacted the surface 200 to be coated, but maintains the preset adhesive application gap. As the base 1 continues to move, if the surface 200 to be coated becomes concave, the pressure head 31 will sink under the action of the floating structure (such as the elastic element 22), causing the floating mechanism 2 to float downward relative to the base 1. At this time, the adhesive application head 32 also descends to maintain the preset adhesive application gap with the concave area of ​​the surface 200 to be coated. If the surface 200 to be coated becomes convex, the pressure head 31 will be pushed upward, compressing the floating mechanism 2 (such as the elastic element 22), causing the floating mechanism 2 to float upward relative to the base 1. The adhesive application head 32 also rises accordingly to avoid collision with the convex part or abnormal adhesive dispensing due to excessively small gap. By using the method of pressure head 31 sensing in advance and floating mechanism 2 adaptively adjusting, the glue applicator 32 can always maintain a relatively stable glue application distance with the glue-to-surface 200, thereby effectively ensuring the uniformity of glue application and reducing phenomena such as uneven glue thickness and glue breakage caused by the flatness of the glue-to-surface 200.

[0032] In summary, the floating adhesive applicator 100 provided in this embodiment of the invention includes a base 1, a floating mechanism 2, and a pressure head mechanism 3. The base 1 is capable of moving at least in the horizontal direction. The floating mechanism 2 is movably disposed at the lower end of the base 1 and can float relative to the base 1 in the vertical direction. The pressure head mechanism 3 is disposed at the lower end of the floating mechanism 2 and floats with the floating mechanism 2. The pressure head mechanism 3 includes a pressure head 31 and an adhesive applicator 32 disposed on one side of the pressure head 31. The pressure head 31 is used to press against the surface 200 to be coated, and the adhesive applicator 32 is used to apply adhesive to the surface 200. The height of the adhesive applicator 32 is higher than the height of the pressure head 31. By setting the floating mechanism 2 and the pressure head mechanism 3, this embodiment of the invention effectively solves the problems of uneven adhesive application and adhesive breakage caused by the flatness deviation of the surface 200 to be coated in the prior art, which are caused by the floating mechanism 2 driving the adhesive applicator 32 to adaptively adjust its height. This significantly improves the adhesive application quality and production efficiency, and is especially suitable for battery packaging and assembly scenarios where the uniformity of adhesive thickness is required.

[0033] In some embodiments, please continue reading Figure 1In order to enable the floating mechanism 2 to adaptively float up and down relative to the base 1, the floating mechanism 2 includes a connecting component 21 and an elastic element 22. The upper end of the connecting component 21 is movably connected to the base 1, and the lower end is connected to the pressure head mechanism 3. The elastic element 22 is sleeved on the connecting component 21, and the two ends of the elastic element 22 abut against the base 1 and the connecting component 21 respectively, so as to provide elastic restoring force for the floating mechanism 2.

[0034] The floating principle of the floating mechanism 2 is as follows: When the surface to be coated 200 bulges, the pressure head 31 receives an upward thrust, which is transmitted to the connecting component 21 through the pressure head mechanism 3. The connecting component 21 moves upward relative to the base 1, at which time the elastic element 22 (such as a spring) is compressed, storing elastic potential energy. When the surface to be coated 200 is concave, the pressure head 31 loses its upward support force, and the compressed elastic element 22 releases its elastic potential energy, pushing the connecting component 21 downward relative to the base 1, thereby ensuring that the pressure head 31 always fits tightly against the surface to be coated 200. This elastic connection method allows the floating mechanism 2 to respond quickly and adaptively adjust according to the real-time height changes of the surface to be coated 200, ensuring a stable distance between the coating head 32 and the surface to be coated 200. The elastic coefficient of the elastic element 22 can be selected according to the actual glue application pressure requirements to balance the pressure of the pressure head 31 on the glue-to-surface 200 and the sensitivity of the floating mechanism 2. This avoids damage to the glue-to-surface 200 due to excessive pressure or insufficient pressure causing the pressure head 31 to not fit tightly, thus affecting the height sensing accuracy. Therefore, the setting of the elastic element 22 constructs a floating adjustment mechanism with a simple structure and sensitive response.

[0035] If it is necessary to measure the floating height of the floating mechanism 2 relative to the base 1 to achieve precise control or data feedback of the height of the dispensing head 32, a displacement measuring component can be installed between the base 1 and the floating mechanism 2. This displacement measuring component can be a linear displacement sensor, such as a grating ruler, magnetic grating ruler, or linear potentiometer, with its fixed end mounted on the base 1 and its moving end connected to the connecting component 21 of the floating mechanism 2. When the floating mechanism 2 floats up and down relative to the base 1, the displacement measuring component can detect and output the relative displacement between the two in real time, i.e., the floating height. After receiving this floating height information, the control system can combine it with preset dispensing parameters (such as standard dispensing gap, adhesive viscosity characteristics, etc.) to further precisely adjust the dispensing volume or dispensing speed of the dispensing head 32, or record the flatness data of the surface 200 to be coated, providing a basis for subsequent process optimization. For example, when the floating height is detected to increase (indicating that the surface to be coated 200 is concave), the control system can control the coating head 32 to appropriately increase the amount of glue dispensed to ensure the coating thickness in the concave area; when the floating height is decreased (indicating that the surface to be coated 200 is convex), the amount of glue dispensed will be appropriately reduced to avoid glue accumulation.

[0036] In some embodiments, please combine Figure 2To further achieve stable support and floating guidance for the elastic element 22, the connecting assembly 21 includes a connecting element 211. The connecting element 211 includes a connecting body 2111 and a bearing portion 2112 disposed on the outer peripheral wall of the connecting body 2111. The connecting body 2111 extends in the vertical direction. The elastic element 22 abuts against the base 1 and the bearing portion 2112. The upper end of the connecting body 2111 is movably connected to the base 1, and the lower end of the connecting body 2111 is connected to the pressure head mechanism 3.

[0037] The elastic element 22 here serves both as a floating compensation mechanism and as a buffer for vibration reduction. The bearing portion 2112 provides a stable lower support point for the elastic element 22, ensuring that the elastic element 22 always moves axially along the connecting body 2111 during compression or extension, avoiding lateral displacement or jamming. The bearing portion 2112 on the outer peripheral wall of the connecting body 2111 can be a radially outward-extending annular flange or multiple evenly distributed protrusions to ensure uniform force distribution on the elastic element 22. For example, when a spring is used as the elastic element 22, the spring is sleeved on the connecting body 2111, with its lower end abutting against the bearing portion 2112 and its upper end abutting against the bottom of the base 1. This structure allows the spring compression to increase when the floating mechanism 2 floats upward and decrease when it floats downward.

[0038] The bearing part 2112 is provided so that the elastic element 22 always moves in extension and retraction along the axis of the connecting body 2111, thereby improving the motion stability and guiding accuracy of the floating mechanism 2.

[0039] In one embodiment, in order to limit the floating stroke of the connecting component 21 and improve motion stability, a downward-opening limiting groove 11 is formed at the lower end of the base 1, and a limiting part 12 is provided at the opening of the limiting groove 11 to block the opening of the limiting groove 11; the upper end of the connecting column extends upward into the limiting groove 11; the connecting component 21 also includes a suspension ring 2113, which is suspended above the limiting part 12; and an elastic member 22 abuts between the limiting part 12 and the bearing part 2112.

[0040] The limiting groove 11 provides a clear range of motion for the vertical floating of the connecting assembly 21. Its inner wall guides the movement of the connecting column, reducing radial displacement of the connecting assembly 21 during floating and improving the motion accuracy of the floating mechanism 2. The limiting part 12 is fixed to the lower end of the base 1 by welding, bolts, or clips, which not only seals the opening of the limiting groove 11 but also provides a lower support point for the suspension ring 2113. The suspension ring 2113 is located at the upper end of the connecting body 2111, and its outer diameter is larger than the diameter of the central through hole of the limiting part 12, so that the suspension ring 2113 can be suspended above the limiting part 12, thereby limiting the maximum downward floating stroke of the connecting assembly 21 and preventing the connecting assembly 21 from detaching from the base 1 due to excessive extension of the elastic element 22.

[0041] When the floating mechanism 2 floats downwards, the suspension ring 2113 moves downwards synchronously with the connecting column until it abuts against the upper surface of the limiting part 12, thereby restricting the connecting assembly 21 from moving further downwards and reliably limiting the lower limit position of the floating mechanism 2. When the floating mechanism 2 floats upwards, the upper end of the connecting column moves upwards until the top of the connecting column abuts against the top wall of the limiting groove 11. At this point, the connecting assembly 21 cannot move further upwards, thus limiting the upper limit position of the floating mechanism 2. This upper and lower limiting structure allows the floating mechanism 2 to adaptively adjust within a preset effective stroke, further improving the safety and stability of the device operation.

[0042] In some embodiments, please refer to Figure 1 and Figure 2 In order to guide the glue application and avoid obstacles, the pressure head 31 is arranged around the outside of the glue application head 32, and the pressure head 31 is rotatably connected to the connecting body 2111, so that the pressure head 31 can rotate around the glue application head 32.

[0043] There are several ways to arrange the pressure head 31 around the glue applicator 32. For example, a gear transmission mechanism can be added between the pressure head 31 and the glue applicator 32, and the pressure head 31 can be actively rotated by a motor; or a bearing connection structure can be used so that the pressure head 31 can be passively rotated relative to the glue applicator 32. That is, when the pressure head 31 comes into contact with the obstacle structure, it will naturally rotate and adjust its direction under the reaction force of the obstacle structure.

[0044] With this design, when the pressure head 31 encounters lateral resistance on the surface 200 to be coated, it can flexibly adjust itself by rotating to avoid protrusions, solder joints, or other obstructions on the surface 200, preventing the pressure head 31 from jamming or damaging the surface 200 due to rigid collisions. Simultaneously, the rotational characteristics of the pressure head 31 allow for smooth transitions at bends in the coating trajectory, reducing lateral tension on the coating head 32 and ensuring that the coating head 32 consistently dispenses adhesive along a preset trajectory. For example, when applying adhesive to the corners or irregularly shaped areas of the battery pack casing, the pressure head 31 can passively rotate with changes in the coating trajectory, maintaining good contact with the surface 200 to be coated, providing a continuous and stable height reference for the coating head 32, thereby achieving uniform adhesive application under complex trajectories.

[0045] In some embodiments, please continue reading Figure 1 and Figure 2 In order to enable the pressure head 31 to rotate to adapt to the contour of the adhesive surface 200 and achieve flexible obstacle avoidance, the adhesive application head 32 is connected to the lower end of the connecting body 2111; the pressure head mechanism 3 also includes a rotating cylinder 33, which is movably sleeved on the periphery of the connecting body 2111, and the pressure head 31 is connected to the rotating cylinder 33.

[0046] The structure movably connects the pressure head 31 to the connecting body 2111 via a rotating cylinder 33, allowing the pressure head 31 to rotate freely around the glue application head 32. When the pressure head 31 encounters obstacles such as protrusions or steps on the surface to be glued 200, it can change the contact angle by rotating to achieve flexible avoidance, preventing rigid jamming or scratching of the workpiece surface. The rotating cylinder 33 and the connecting body 2111 can achieve smooth rotation through bearings and other components, further improving the flexibility and reliability of the pressure head 31's rotation.

[0047] Furthermore, the rotating cylinder 33 is located below the supporting portion 2112 to limit the axial position of the rotating cylinder 33 relative to the connecting body 2111. In addition, a gap may be provided between the upper end face of the rotating cylinder 33 and the lower end face of the supporting portion 2112 to reduce frictional interference between the rotating cylinder 33 and the supporting portion 2112 during rotation.

[0048] In some embodiments, please continue reading Figure 1 and Figure 2 In order to achieve active rotation control of the pressure head 31 to adapt to the needs of coating on complex curved surfaces or active obstacle avoidance, the pressure head mechanism 3 also includes a first driving member 34 disposed on the connecting body 2111, and a first gear 35 and a second gear 36 meshing with each other; the fixed end of the first driving member 34 is connected to the connecting body 2111, and the power end of the first driving member 34 is driven to be connected to the first gear 35; the pressure head 31 is connected to the rotating drum 33 through the second gear 36.

[0049] This structure provides active rotational power through a first driving component 34 (such as a motor), which is transmitted to the rotating drum 33 via a gear set, thereby driving the pressure head 31 to rotate around the coating head 32. Compared to passive rotation, active rotation control can more accurately adjust the posture of the pressure head 31, such as rotating in advance to avoid pre-set obstacles, or adjusting the contact angle in real time when coating on complex curved surfaces, so that the pressure head 31 always fits well with the coating surface, further improving the coating quality and efficiency.

[0050] In some embodiments, please refer to Figure 1 In order to reduce the friction of the pressure head 31, a ball bearing 311 is rolledly embedded at the bottom end of the pressure head 31. The ball bearing 311 is used to press against the surface 200 to be coated with adhesive.

[0051] The ball bearing 311 transforms the sliding friction between the pressure head 31 and the adhesive surface 200 into rolling friction, significantly reducing the resistance of the pressure head 31 when moving on the adhesive surface 200, reducing wear on the adhesive surface, and making the sliding of the pressure head 31 smoother, thus avoiding deviation of the adhesive application trajectory or vibration of the device due to excessive frictional resistance.

[0052] This invention also provides a floating adhesive application method.

[0053] Please see Figure 1 and Figure 2 The floating adhesive application method is based on the floating adhesive application apparatus 100 provided in any of the above embodiments. The floating adhesive application method includes the following steps: Start the floating glue applicator 100 and control the pressure head 31 of the pressure head mechanism 3 to abut against the glue-to-surface 200.

[0054] The control base 1 drives the floating mechanism 2 and the pressure head mechanism 3 to move horizontally and at a constant speed along the preset glue application trajectory, and simultaneously starts the glue application head 32, so that the glue application head 32 can perform glue application on the surface 200 to be glued.

[0055] The floating height of the floating mechanism 2 relative to the base 1 is detected in real time by the displacement measurement component, and the floating height information is fed back to the control system in real time.

[0056] The control system analyzes and judges the unevenness of the surface 200 to be coated based on the floating height information, and then adaptively adjusts the amount of adhesive dispensed by the adhesive applicator 32 to match the height change of the surface 200 to be coated.

[0057] In the above-mentioned glue application steps, when the surface 200 to be glued becomes concave, the pressure head 31 sinks under the action of the elastic element 22, causing the floating mechanism 2 and the glue application head 32 to descend synchronously. The displacement measuring component detects an increase in the floating height, and the control system determines that the surface 200 to be glued is a concave area. It then controls the glue application head 32 to increase the glue dispensing amount to ensure that the glue in the concave area is filled to the preset thickness. When the surface 200 to be glued becomes convex, the pressure head 31 receives an upward thrust, compressing the elastic element 22 and causing the floating mechanism 2 and the glue application head 32 to rise. The displacement measuring component detects a decrease in the floating height, and the control system determines that it is a convex area. It then controls the glue application head 32 to reduce the glue dispensing amount to prevent excessive glue accumulation at the convex area. Through this real-time detection and dynamic adjustment, the glue application head 32 can adaptively change the glue dispensing amount according to the actual contour of the surface 200 to be glued, thereby ensuring the uniformity and consistency of glue application along the entire glue application trajectory, effectively improving the glue application quality and pass rate of the product.

[0058] Furthermore, the floating adhesive application method also includes the following steps: During the horizontal movement of the floating adhesive applicator 100 along the preset adhesive applicator trajectory and during the adhesive applicator process, the pressure head 31 is located in front of the adhesive applicator head 32 in the forward direction.

[0059] The horizontal distance between the glue applicator 32 and the pressure head 31 and the horizontal movement speed of the base 1 are pre-calibrated, and the delay time is calculated based on the horizontal distance and the horizontal movement speed.

[0060] Based on the delay time, after the displacement measurement component detects the floating height information and completes the judgment, the control system adjusts the glue dispensing amount of the glue applicator 32 after a delay, so that when the glue applicator 32 reaches the detection position, the glue dispensing amount has been adjusted to the appropriate state.

[0061] In the above steps, since the pressure head 31 contacts the surface 200 to be coated before the glue applicator 32, there is a time difference between the height change sensed by the pressure head 31 and the actual arrival of the glue applicator 32 at that position. By pre-calibrating the horizontal distance between the glue applicator 32 and the pressure head 31 (i.e., the distance by which the pressure head 31 leads the glue applicator 32) and the horizontal speed at which the base 1 drives the entire mechanism along the glue applicator trajectory, the control system can accurately calculate this time difference, i.e., the delay time. For example, if the horizontal distance is 10 mm and the base 1 moves at a speed of 5 mm / s, then the delay time is 2 seconds. When the displacement measuring component detects a floating height change at a certain position and the control system completes the judgment of the unevenness of the surface 200 to be coated, the control system will not immediately adjust the glue dispensing amount of the glue applicator 32, but will wait for the calculated delay time before executing the adjustment command. In this way, when the glue applicator 32 moves to the detection position, the glue dispensing amount adjustment is completed, so that when the glue applicator 32 passes through the area, it can apply glue with a dispensing amount that matches the height of the surface to be glued 200. This further eliminates the adjustment lag problem caused by the difference in spatial position between the pressure head 31 and the glue applicator 32, and ensures higher glue application accuracy.

[0062] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A floating adhesive applicator, characterized in that, include: The base, at least, is capable of movement in the horizontal direction; A floating mechanism is movably disposed at the lower end of the base and can float relative to the base in the vertical direction. as well as, A pressing head mechanism is located at the lower end of the floating mechanism and floats with the floating mechanism; the pressing head mechanism includes a pressing head and a glue applicator head located on one side of the pressing head, the pressing head is used to press against the surface to be glued, and the glue applicator head is used to apply glue to the surface to be glued; the height of the glue applicator head is higher than the height of the pressing head.

2. The floating adhesive applicator according to claim 1, characterized in that, The floating mechanism includes: The connecting component is movably connected to the base at its upper end and connected to the pressure head mechanism at its lower end; An elastic element is sleeved on the connecting assembly, with its two ends abutting between the base and the connecting assembly, to provide elastic restoring force for the floating mechanism.

3. The floating adhesive applicator according to claim 2, characterized in that, The connecting component includes a connector, which includes a connecting body and a bearing portion disposed on the outer peripheral wall of the connecting body, the connecting body extending in the vertical direction; The elastic element abuts between the base and the bearing part, the upper end of the connecting body is movably connected to the base, and the lower end of the connecting body is connected to the pressure head mechanism.

4. The floating adhesive applicator according to claim 3, characterized in that, The lower end of the base is formed with a downward-opening limiting groove, and the base is provided with a limiting part at the opening of the limiting groove to block the opening of the limiting groove. The upper end of the connecting column extends upward into the limiting groove; the connecting member also includes a suspension ring, which is suspended above the limiting part; the elastic element abuts between the limiting part and the bearing part.

5. The floating adhesive applicator according to claim 3, characterized in that, The pressure head is arranged around the outside of the glue applicator, and the pressure head is rotatably connected to the connecting body, so that the pressure head can rotate around the glue applicator.

6. The floating adhesive applicator according to claim 5, characterized in that, The glue applicator is connected to the lower end of the connecting body; The pressure head mechanism also includes a rotating cylinder, which is movably sleeved around the periphery of the connecting body, and the pressure head is connected to the rotating cylinder.

7. The floating adhesive applicator according to claim 6, characterized in that, The pressure head mechanism further includes a first driving member disposed on the connecting body, and a first gear and a second gear meshing with each other; the fixed end of the first driving member is connected to the connecting body, and the power end of the first driving member is driven to be connected to the first gear. The pressure head is connected to the rotating drum via the second gear.

8. The floating adhesive applicator according to claim 1, characterized in that, The bottom end of the pressure head is rotatably embedded with ball bearings, which are used to press against the surface to be coated with adhesive.

9. A floating adhesive application method, characterized in that, Based on the floating adhesive applicator according to any one of claims 1 to 8, the floating adhesive application method includes: Start the floating adhesive applicator and control the pressure head of the pressure head mechanism to abut against the surface to be coated; The base is controlled to drive the floating mechanism and the pressure head mechanism to move horizontally at a constant speed along a preset glue application trajectory, and the glue application head is started simultaneously so that the glue application head can perform glue application on the surface to be glued. The floating height of the floating mechanism relative to the base is detected in real time by the displacement measurement component, and the floating height information is fed back to the control system in real time. The control system analyzes and judges the unevenness of the surface to be coated based on the floating height information, and then adaptively adjusts the amount of adhesive dispensed by the coating head to match the height change of the surface to be coated.

10. The floating adhesive application method according to claim 9, characterized in that, Also includes: During the horizontal movement and application of the floating adhesive applicator along a preset adhesive application trajectory, the pressure head is located in front of the direction of advance of the adhesive application head; The horizontal distance between the glue applicator and the pressure head and the horizontal movement speed of the base are pre-calibrated, and the delay time is calculated based on the horizontal distance and the horizontal movement speed. The control system adjusts the glue dispensing amount of the glue applicator after a delay, based on the delay time, after the displacement measuring component detects the floating height information and completes the judgment, so that the glue dispensing amount has been adjusted to the appropriate state when the glue applicator reaches the detection position.

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