Glue ejection structure

Abstract

The utility model relates to battery gluing technology field provides a glue outlet structure, including at least two with glue supply unit connection's point gum unit, corresponding setting's glue outlet pipe and its far end connection's glue outlet nozzle, and each glue outlet pipe corresponds to set up two and above glue outlet hole. Through each glue outlet pipe multi -hole parallel arrangement, the utility model can form in same stroke inside simultaneously many parallel glue lines, realizes parallel glue outlet. The structure significantly improves the gluing efficiency, shortens the technological cycle, and reduces the nozzle to and fro and the positioning number of times to reduce single piece working hours and promote the line capacity and stability.

Description

Technical Field

[0001] This utility model relates to the field of battery coating technology, and in particular to a dispensing structure. Background Technology

[0002] With the widespread application of power batteries in electric vehicles and other fields, thermally conductive structural adhesive is often applied to corresponding positions on the direct cooling plate to enhance the heat dissipation, fixation, and service life of the battery pack, in order to meet the safety and stable operation requirements of the battery module. Existing adhesive application processes typically achieve this by applying structural adhesive to corresponding positions on both sides of the direct cooling plate.

[0003] However, existing structures are quite complex, and many existing devices only use a single set of dispensing valves for dispensing, which can only coat one line area at a time. This results in slow dispensing speed, low efficiency, and difficulty in meeting the cycle time requirements of mass production. In addition, existing solutions also have shortcomings in terms of ease of installation, sealing reliability, and multi-channel synchronous dispensing capability, which urgently need further improvement to enhance the consistency, reliability, and production efficiency of dispensing. Utility Model Content

[0004] This invention provides a glue dispensing structure to improve glue application efficiency.

[0005] This utility model provides a glue dispensing structure, comprising:

[0006] A dispensing unit is connected to a glue supply unit, and at least two dispensing units are provided.

[0007] A glue dispensing tube is provided for each of the glue dispensing units, and one end of the glue dispensing tube is connected to the glue dispensing unit.

[0008] A dispensing nozzle is connected to the end of the dispensing tube furthest from the dispensing unit. The dispensing nozzle is provided with dispensing holes, and each dispensing tube is provided with at least two dispensing holes.

[0009] In one embodiment of this utility model, the same dispensing nozzle is connected to all the dispensing tubes.

[0010] In one embodiment of this utility model, the centers of all the dispensing holes are located on the same straight line.

[0011] In one embodiment of the present invention, the dispensing nozzle includes a connection port, the connection port is connected to the dispensing tube, and two dispensing holes are provided for each connection port.

[0012] In one embodiment of the present invention, a busbar is further included, wherein a solenoid valve is provided on the busbar for each dispensing unit, and the solenoid valve is used to control the dispensing and closing of the dispensing unit.

[0013] In one embodiment of the present invention, a fixing plate is also included, and all the dispensing units are disposed on the same fixing plate.

[0014] In one embodiment of the present invention, the fixing plate is provided with a mounting groove, the dispensing unit is inserted into the mounting groove, the side wall of the fixing plate is provided with a bolt that penetrates into the mounting groove, and the dispensing unit is provided with a positioning hole for the bolt to be inserted.

[0015] In one embodiment of the present invention, the dispensing unit includes a dispensing valve and a dispensing structure. The dispensing structure includes two inlets and one outlet. The outlet is connected to the two inlets, and the two inlets are connected to the pipes of the two components inside the dispensing valve.

[0016] In one embodiment of this utility model, the dispensing tube is detachably connected to the dispensing unit and the dispensing nozzle.

[0017] In one embodiment of this utility model, the dispensing tube is connected to the dispensing unit and the dispensing nozzle by a thread.

[0018] The beneficial effects of this utility model are as follows: The glue dispensing structure proposed in this utility model has multiple glue dispensing holes corresponding to each glue dispensing tube, which can realize the simultaneous dispensing of multiple parallel glue lines within the same stroke, significantly improving glue application efficiency and shortening the process cycle. Simultaneous completion of multiple parallel lines in one operation reduces the number of times the nozzle reciprocates on the workpiece and the number of positioning / alignment operations, significantly reducing the processing time per piece. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the adhesive dispensing structure provided in one embodiment of the present invention;

[0022] Figure 2 This is a disassembly diagram of the glue dispensing structure provided in one embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the dispensing nozzle of the dispensing structure provided in one embodiment of the present invention.

[0024] The attached figures are labeled as follows:

[0025] 10. Dispensing unit; 11. Dispensing valve; 12. Dispensing structure; 13. Positioning hole; 20. Dispensing tube; 30. Dispensing nozzle; 31. Dispensing hole; 32. Connection port; 40. Manifold; 50. Solenoid valve; 60. Fixing plate; 61. Mounting slot; 62. Bolt. Detailed Implementation

[0026] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0028] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present invention.

[0029] With the increasing demands on power battery pack technology from new energy vehicles, energy storage systems, and other fields, thermal management and structural fixation of battery modules have become crucial factors affecting battery safety, lifespan, and performance. As a commonly used thermal management component, the direct cooling plate (or cooling plate) requires the application of thermally conductive structural adhesive at specified locations on its contact surface with the battery pack casing or cells to achieve multiple functions such as heat conduction, vibration damping, and fixation. Therefore, the direct cooling plate adhesive application process plays a critical role in battery assembly lines, and its quality directly affects the heat dissipation efficiency, mechanical stability, and long-term reliability of the battery module.

[0030] Existing direct-cooling plate coating equipment and processes generally involve: pre-mixing two-component (A / B component) structural adhesive through a dispensing valve or mixing tube, and then spraying it onto a predetermined trajectory on the direct-cooling plate through a dispensing nozzle to form a continuous adhesive line. In some solutions, to accommodate double-sided or multi-line parallel coating, rotating structures, belt drives, synchronous belts, or other mechanisms are used to position and fix the mixing tube or dispensing unit, achieving relative movement or batch parallel dispensing. These traditional solutions have several limiting factors and technical shortcomings in industrial applications, affecting production efficiency and product quality.

[0031] To secure the mixing hose or dispensing valve, rotary mounting structures and synchronous belts or other transmission / positioning mechanisms are commonly used. These structures require numerous mechanical parts and high assembly precision, resulting in high installation, debugging, and maintenance costs, as well as increased equipment size and cost. Furthermore, long-term operation of the synchronous belt can lead to slack or skipped teeth, causing misalignment of the dispensing unit and affecting the accuracy of the dispensing trajectory.

[0032] If the connection between the mixing hose and the dispensing structure and nozzle relies on a loose fit or an unreliable locking mechanism, glue leakage is likely to occur during the application process if the installation is not tight, the thread fit is not tight, or the sealing ring fails. Glue leakage not only wastes materials and causes contamination, but also leads to discontinuous and uneven glue lines, affecting thermal conductivity and assembly reliability. Furthermore, frequent cleaning and line maintenance shutdowns reduce production efficiency.

[0033] Many existing machines use a single set of dispensing valves or a single-channel dispensing method, which can only coat one line area at a time. The process needs to be repeated multiple times to complete the coating of double-sided or multiple lines areas, resulting in slow cycle time and limited production capacity. In mass production scenarios, this method is difficult to meet the requirements of production cycle time and labor cost.

[0034] The uniform mixing of two-component adhesives depends on the mixing structure and pipeline design. An unreasonable flow path or unstable pressure control can easily lead to fluctuations in the ratio of components A / B or uneven mixing, which in turn causes differences in the properties of the adhesive (such as bond strength, thermal conductivity and curing speed), affecting product consistency and reliability.

[0035] Based on the aforementioned problems, the industry urgently needs a dispensing device with a simpler structure, convenient installation and maintenance, reliable sealing, and the ability to achieve simultaneous linear dispensing from multiple channels, thereby improving coating efficiency and consistency. This device should reliably secure the dispensing unit and mixing tube to prevent leakage due to loose installation; support parallel or group dispensing valve control to complete simultaneous linear coating of multiple lines in a single stroke; and ensure effective distribution and mixing of the two components at the dispensing end, reducing downtime for maintenance and improving production line automation and stability. These technical requirements are precisely the background and starting point for the solutions and improvements proposed in this patent.

[0036] Please see Figure 1-3 , Figure 1The present invention provides a glue dispensing structure, including a glue dispensing unit 10, a glue dispensing tube 20, and a glue dispensing nozzle 30.

[0037] At least two dispensing units 10 are provided, each connected to the glue supply unit. Each dispensing unit 10 is connected to the glue supply system and delivers glue to the dispensing end through an independent dispensing tube 20. Multiple dispensing holes 31 are arranged at the distal end of the dispensing nozzle 30 to achieve multi-point dispensing within the same channel. This structure can use a single dispensing module to collect multiple dispensing tubes 20, or the dispensing holes 31 can be arranged in a straight line or other configurations to meet the geometric requirements of different workpieces. The dispensing tubes 20 are detachable or sealable from the dispensing units 10 and the dispensing nozzles 30, facilitating assembly, replacement, and cleaning.

[0038] One dispensing tube 20 is provided for each of the dispensing units 10, and one end of the dispensing tube 20 is connected to the dispensing unit 10.

[0039] The dispensing nozzle 30 is connected to the end of the dispensing tube 20 away from the dispensing unit 10. The dispensing nozzle 30 is provided with a dispensing hole 31. Each dispensing tube 20 is provided with at least two dispensing holes 31.

[0040] The above solution, by simultaneously forming multiple parallel glue lines at the dispensing end of each channel, can complete more glue application positions in a single stroke, significantly shortening the process cycle and increasing the output per unit time. It reduces the number of nozzle reciprocations and positioning operations, thereby reducing motion fatigue and positioning errors, and improving the spacing and thickness consistency between glue lines. The combination of independent pathways and centralized dispensing ends facilitates process control and fault isolation, reduces waste glue and cleaning frequency, and improves equipment availability and production stability. The modular dispensing nozzle 30 and detachable connection facilitate maintenance, quick replacement, and production line switching, enhancing adaptability and scalability.

[0041] In typical applications, this structure can be used in planar coating processes requiring multiple parallel glue lines. By arranging the dispensing units 10 in groups and having them converge from the corresponding dispensing tubes 20 into the multi-hole dispensing nozzles 30, parallel dispensing can be completed in one go to finish the entire glue line. In high-volume or continuous operation scenarios, group control or redundant configuration can achieve uninterrupted maintenance and rapid replacement. During product changeovers or cleaning maintenance, the dispensing tubes 20 or dispensing nozzle modules 30 can be quickly disassembled or replaced to reduce downtime. For irregularly shaped or double-sided glue application requirements, the arrangement of the dispensing holes 31 can be adjusted or the corresponding dispensing modules can be replaced to adapt to different process requirements.

[0042] In one embodiment of this utility model, the same dispensing nozzle 30 is connected to all the dispensing tubes 20. This structure integrates multiple dispensing tubes 20 into a unified dispensing nozzle 30. The dispensing nozzle 30 is a single modular component responsible for outlet positioning and sealing, facilitating unified installation, adjustment, and replacement, reducing leakage points and assembly time caused by each independent interface. Technically, it can achieve more uniform dispensing end positioning and consistent installation benchmarks, facilitating overall calibration and maintenance on-site. Furthermore, the centralized structure facilitates unified flushing or purging of the dispensing nozzle 30, reducing the frequency of line downtime for cleaning and improving production line availability. This solution is suitable for scenarios requiring rapid replacement of dispensing modules or frequent process switching at the same workstation. During engineering implementation, the collection module can be mounted as a replaceable unit on a beam or bracket, facilitating overall offline inspection or replacement to shorten the maintenance cycle.

[0043] In one embodiment of this utility model, the centers of all the dispensing holes 31 are located on the same straight line. This design arranges all the dispensing holes 31 along a straight line at the dispensing end, thereby ensuring that the parallel glue lines maintain a constant spacing and alignment during a single linear stroke, which is beneficial for completing multi-line coating using unidirectional linear motion. The technical benefits are reflected in simplified motion control and improved glue application consistency. The straight hole array combined with rigid positioning can significantly reduce spacing deviations and uneven thickness caused by reciprocating movement, reducing the need for glue line position compensation or rework in subsequent processes. This solution is particularly suitable for processes that achieve parallel linear glue application on long planar components. It can be used with unidirectional servo or linear modules to complete the entire row of coatings in one stroke, thereby improving process stability and reducing the number of positioning operations.

[0044] In one embodiment of this utility model, as Figure 3 As shown, the dispensing nozzle 30 includes a connection port 32, which is connected to the dispensing tube 20. Each connection port 32 has two dispensing holes 31. This structure modularizes the dispensing end into several connection port 32 units. Each connection port 32 provides a mechanical and fluid connection to the corresponding dispensing tube 20, and the dispensing end branches into two dispensing paths in a paired hole configuration. Technically, this solution combines the advantages of modularity and balanced flow distribution: each connection port 32 can be replaced or adjusted as an independent maintenance unit; the internal channels of the paired holes can be designed symmetrically to balance the two flow paths, facilitating local flow adjustment and fault isolation, thereby improving system maintainability and dispensing consistency. This structure is suitable for applications requiring parallel output of line segments in groups or parallel dispensing in pairs under the same supply line. During engineering implementation, valves or pressure testing interfaces can be used at each connection port 32 to achieve unit-level start / stop and online diagnostics.

[0045] In one embodiment of this utility model, as Figure 1As shown, the system also includes a manifold 40, on which a solenoid valve 50 is provided for each dispensing unit 10. The solenoid valve 50 is used to control the dispensing and closing of the dispensing unit 10. This scheme distributes the dispensing channels at the manifold 40 and equips each channel with an independent solenoid valve 50, thereby enabling independent and rapid electronic control switching of dispensing and closing for each dispensing unit 10. The technical benefits are reflected in the ability to achieve precise timing control and grouping strategies for each channel. It can simultaneously start to achieve parallel dispensing, or disconnect a single channel for troubleshooting or shutdown, improving the repeatability of dispensing start and stop and the consistency of forming, and reducing flow fluctuations and initial defects caused by valve response differences. In addition, independent valve control facilitates online isolation of faulty channels, shortens maintenance time, and reduces the risk of downtime for the entire line. For example, the dispensing interfaces are uniformly arranged at the workstation through the manifold 40. Each solenoid valve 50 is linked with the controller to achieve a fine pulse or continuous dispensing strategy, and detection or venting ports can be arranged at the valve positions to support online diagnostics and cleaning.

[0046] In one embodiment of this utility model, as Figure 2 As shown, the system also includes a fixing plate 60, on which all the dispensing units 10 are mounted. This design integrates all dispensing units 10 as a single unit onto a common fixing plate 60, forming a modular assembly reference. The technical advantages include significantly improved rigidity and repeatability of the entire dispensing unit group 10, facilitating one-time calibration and fixed reference management, thereby reducing the number of assembly and debugging cycles, and improving the consistency of the dispensing position and process stability. Simultaneously, modular assembly facilitates disassembly and replacement of the entire unit, aiding in production line changeovers and maintenance management, and increasing equipment availability. For example, by pre-assembling and adjusting the dispensing units 10 on the fixing plate 60, they can be directly installed as replaceable modules onto the frame or robot end effector. On-site alignment is all that is needed to resume production, simplifying the on-site debugging process.

[0047] In one embodiment of this utility model, as Figure 2As shown, the fixing plate 60 has a mounting groove 61, and the dispensing unit 10 is inserted into the mounting groove 61. A bolt 62, penetrating into the mounting groove 61, is provided on the side wall of the fixing plate 60. The dispensing unit 10 has a positioning hole 13 for the bolt 62 to be inserted. This structure uses a slot-insertion mechanism with the bolt 62 penetrating the side wall and the positioning hole 13 on the dispensing unit 10 for mechanical positioning and locking, achieving both rapid insertion and a secure, shear- and torsional-resistant fixation. The technical advantages include convenient installation and high repeatability; the insertion-type installation facilitates quick replacement or adjustment of the unit position to adapt to process fine-tuning; and the side wall bolt 62 provides reliable locking constraints to resist vibration and thrust generated during operation, thereby improving assembly reliability and reducing the frequency of secondary adjustments. For example, after the on-site operator slides the dispensing unit 10 into the mounting slot 61 of the fixing plate 60, the bolt 62 is inserted into the positioning hole 13 from the side wall and tightened to lock it, so as to quickly complete the unit replacement or position fine adjustment. During maintenance, the unit can be pulled out for independent inspection by loosening the bolt 62.

[0048] In one embodiment of this utility model, the dispensing unit 10 includes a dispensing valve 11 and a dispensing structure 12. The dispensing structure 12 includes two inlets and one outlet. The outlet is connected to the two inlets, and the two inlets are connected to the pipes of the two components within the dispensing valve 11. This structure introduces the two components into the dispensing chamber through their respective inlets and exits through a common outlet. The dispensing chamber can serve as a controlled merging point and can be further connected to a subsequent mixer or directly into the dispensing pipe 20, facilitating the establishment of a mixing starting point and minimizing dead zones near the dispensing end. The technical advantages are that it can ensure the stable merging of the two components according to a set ratio, reduce retention and cross-contamination in long pipelines, improve mixing consistency and controllability of the starting and ending morphology of the adhesive, and facilitate local heating or constant temperature to improve the flowability of high-viscosity materials. For example, after the two components of the adhesive enter the dispensing chamber with a symmetrical flow guiding structure through their respective valves, they are led to a static mixer or a short-distance dispensing pipe 20 through a unified outlet of the chamber. The dispensing chamber can be equipped with flow guiding ribs or primary mixing elements to promote uniform flow. This method is suitable for two-component adhesive processes that require on-site mixing.

[0049] In one embodiment of this utility model, the dispensing tube 20 is detachably connected to the dispensing unit 10 and the dispensing nozzle 30. This solution uses quick-connect couplings or detachable flanges to achieve rapid assembly and disassembly of the dispensing tube 20 at the dispensing unit 10 end and the dispensing nozzle 30 end, allowing each component to be independently removed for cleaning, replacement, or maintenance. The technical advantages are significantly improved maintenance convenience and production line availability. It reduces downtime and the risk of contamination spread through partial replacement or offline rinsing, while facilitating the rapid replacement of dispensing tubes 20 of different lengths or materials to adapt to different process requirements. For example, using quick-connect couplings with sealing rings or snap-fit ​​connectors, along with color or label identification, allows on-site operators to quickly disconnect the pipeline and independently clean or replace the unit, suitable for production environments requiring frequent glue type changes or rapid maintenance.

[0050] In one embodiment of this utility model, the dispensing tube 20 is threadedly connected to the dispensing unit 10 and the dispensing nozzle 30. This solution uses a threaded interface to achieve mechanical and fluid sealing between the pipeline, valve body, and dispensing nozzle 30. It typically uses sealing rings or gaskets to improve sealing reliability and features a robust structure, good vibration resistance, and high pressure resistance. The technical advantage lies in providing a stable and reliable sealing connection to reduce leakage risk and maintain positioning accuracy. It is suitable for high-pressure, long-term operation, or conditions with significant mechanical forces, but the disassembly and assembly time is relatively long. For example, the dispensing tube 20 is connected to the dispensing valve 11 or dispensing nozzle 30 using matching internal and external threaded connectors, equipped with elastic seals and a wrench positioning surface. Installation is performed to the specified torque to ensure durable sealing and repeatable positioning, suitable for dispensing systems requiring high reliability and durability.

[0051] In summary, this utility model achieves several technical benefits through the synergy of modular manifolding, multi-hole dispensing ends, independent channel control, and rigid positioning. Firstly, it concentrates multiple dispensing tubes 20 into a unified dispensing nozzle 30 and employs detachable or reliable threaded connections, reducing the number of external interfaces and leakage risks, facilitating unified rinsing and rapid replacement, and reducing assembly and maintenance workload. Secondly, the dispensing holes 31 are arranged in a straight line or in pairs, forming multiple parallel dispensing points at the far end of each channel, significantly improving parallel dispensing capacity and process cycle time, simplifying motion control, and ensuring consistent glue line spacing and morphology. Simultaneously, the manifold 40 is equipped with solenoid valves 50 for each dispensing unit 10, enabling precise timing control, group operation, and fault isolation, improving the stability of dispensing start and stop and shortening maintenance downtime. The fixing plate 60 and the insert mounting slot 61, in conjunction with side bolts 62, ensure the rigidity and repeatability of the entire dispensing unit 10, facilitating overall module calibration and rapid replacement. The dispensing structure 12 is located at the dispensing unit 10 and near the outlet, which helps to reduce dead zones, ensure the ratio and mixing consistency of the two components, thereby improving the consistency of colloid performance and reducing material waste. In summary, this invention can improve coating efficiency and consistency, enhance maintenance convenience and equipment reliability, and reduce operating costs and downtime frequency. It is suitable for batch, multi-line parallel coating processes such as direct-cooling plate coating.

[0052] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A glue dispensing structure, characterized in that, include: A dispensing unit is connected to a glue supply unit, and at least two dispensing units are provided. A glue dispensing tube is provided for each of the glue dispensing units, and one end of the glue dispensing tube is connected to the glue dispensing unit. A dispensing nozzle is connected to the end of the dispensing tube furthest from the dispensing unit. The dispensing nozzle is provided with dispensing holes, and each dispensing tube is provided with at least two dispensing holes.

2. The dispensing structure according to claim 1, characterized in that, The same dispensing nozzle is connected to all of the dispensing tubes.

3. The dispensing structure according to claim 2, characterized in that, The centers of all the dispensing holes are located on the same straight line.

4. The dispensing structure according to claim 1, characterized in that, The dispensing nozzle includes a connection port, which is connected to the dispensing tube, and two dispensing holes are provided for each connection port.

5. The dispensing structure according to claim 1, characterized in that, It also includes a busbar, on which a solenoid valve is provided for each dispensing unit, and the solenoid valve is used to control the dispensing and closing of the dispensing unit.

6. The dispensing structure according to claim 1, characterized in that, It also includes a fixing plate, on which all the dispensing units are disposed.

7. The dispensing structure according to claim 6, characterized in that, The fixing plate has an installation groove, the dispensing unit is inserted into the installation groove, the side wall of the fixing plate is provided with a bolt that passes through the installation groove, and the dispensing unit has a positioning hole for the bolt to be inserted.

8. The dispensing structure according to claim 1, characterized in that, The dispensing unit includes a dispensing valve and a dispensing structure. The dispensing structure includes two inlets and one outlet. The outlet is connected to the two inlets, and the two inlets are connected to the pipes containing the two components inside the dispensing valve.

9. The dispensing structure according to claim 1, characterized in that, The dispensing tube is detachably connected to the dispensing unit and the dispensing nozzle.

10. The dispensing structure according to claim 1, characterized in that, The dispensing tube is connected to the dispensing unit and the dispensing nozzle by a thread.

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