Automobile glue spraying device and nozzle thereof
By designing a multi-channel nozzle and adopting a nozzle structure with cylindrical guide sections and flow expansion sections, the problem of multiple spraying frequencies required by single-channel nozzles was solved, achieving efficient and stable multi-line adhesive coating effects.
Patent Information
- Application Number
- CN202423175058.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-23
AI Technical Summary
The existing LASD station coating device uses a single-channel linear nozzle, which requires multiple sprayings, resulting in low coating efficiency and high manpower and time consumption.
Design a multi-channel nozzle, including parallel and spaced flow channels, and adopt cylindrical guide sections and flow expansion sections to ensure smooth flow of adhesive and expand the flow area, so as to form multiple adhesive patterns in one application.
It improves spraying efficiency, saves manpower, ensures the continuity and stability of adhesive application, reduces clogging and unevenness, and improves adhesive application quality.
Smart Images
Figure CN223733135U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle painting technology, and more specifically to an automotive adhesive spraying device and its nozzle. Background Technology
[0002] The LASD (Liquid Application of Sound Insulation and Damping) workstation is a crucial step in automotive manufacturing. LASD materials typically possess excellent flowability and viscosity. In the LASD workstation, specialized equipment precisely sprays or coats them onto predetermined locations on the vehicle body surface. This equipment controls the material's flow rate, pressure, and spray angle to ensure a uniform and continuous adhesive layer. Once cured, the LASD material forms a solid gasket with elastic and damping properties, thus fulfilling its functions of sound insulation, vibration damping, and sealing.
[0003] Existing LASD workstation coating devices generally use single-channel linear nozzles for coating, requiring multiple sprays to meet coating needs, which is very labor-intensive and time-consuming, resulting in low coating efficiency. Utility Model Content
[0004] The purpose of this application is to provide a nozzle for applying adhesive to automobiles, which, by setting a multi-channel nozzle, allows multiple adhesive strips to be formed in one application, thereby improving the spraying efficiency.
[0005] To achieve the above objectives, this application provides a nozzle for applying adhesive to automobiles, comprising: a nozzle body;
[0006] The nozzle body has at least two flow channels, which are arranged in parallel and spaced apart. Each flow channel includes an inlet, a guide section, a diffuser section, and an outlet. The inlet is located on the upper surface of the nozzle body along a first direction. The guide section and the diffuser section are sequentially located within the nozzle body along a second direction. The outlet is located on the nozzle body along the second direction. The inlet, the guide section, the diffuser section, and the outlet are sequentially connected. The first direction and the second direction are perpendicular to each other.
[0007] As a preferred technical solution, the guide section includes a first DC section and a second DC section. The first DC section is opened along the first direction, and the second DC section is opened along the second direction. One end of the first DC section is connected to the glue inlet, and the other end is connected to the second DC section.
[0008] As a preferred technical solution, both the first DC section and the second DC section are cylindrical.
[0009] As a preferred technical solution, the distance between two adjacent glue inlets is ≤3.5mm.
[0010] As a preferred technical solution, the cross-sectional area of the flow-expanding section gradually increases along the second direction.
[0011] As a preferred technical solution, the cross-sectional area of the nozzle body remains constant along the second direction and then gradually decreases.
[0012] As a preferred technical solution, the nozzle body is also provided with a snap-fit groove, which is located near the glue inlet and is used to snap-fit with the glue applicator rod.
[0013] This application also provides an automotive adhesive spraying device, comprising: a spray gun, an adhesive application rod, and a nozzle for automotive adhesive application as described above, wherein one end of the adhesive application rod is detachably connected to the spray gun, and the other end is engaged with the nozzle.
[0014] The nozzle for applying adhesive to automobiles disclosed in this application, on the one hand, enables the formation of at least two adhesive layers in a single application by setting at least two flow channels within the nozzle body, effectively improving work efficiency and saving manpower; on the other hand, the flow-expanding section expands the flow of the adhesive flowing into the flow-guiding section, increasing the flow area of the adhesive, thereby increasing the width of the adhesive flowing out from the outlet, further improving work efficiency. Attached Figure Description
[0015] The present application will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present application. Furthermore, unless specifically indicated, the drawings are intended only to conceptually represent the composition or structure of the described objects and may contain exaggerated representations, and the drawings are not necessarily drawn to scale.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a front view of the present invention;
[0018] Figure 3 This is a cross-sectional view of the present invention;
[0019] The components are: 1. Nozzle body; 11. Snap-fit groove; 2. Flow channel; 21. Glue inlet; 22. Guide section; 221. First direct current section; 222. Second direct current section; 23. Flow expansion section; 24. Glue outlet. Detailed Implementation
[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0021] In the description of this application, it should be understood that the terms "front," "rear," "upper," "lower," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, in the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0022] Please see Figure 1-3 The nozzle for applying adhesive to an automobile provided in this application includes: a nozzle body 1;
[0023] Two flow channels 2 are formed inside the nozzle body 1, and the two flow channels 2 are arranged in parallel and spaced apart. Each flow channel 2 includes: an inlet 21, a guide section 22, a diffuser section 23, and an outlet 24. The inlet 21 is formed on the upper surface of the nozzle body 1 along a first direction. The guide section 22 and the diffuser section 23 are formed sequentially inside the nozzle body 1 along a second direction. The outlet 24 is formed on the nozzle body 1 along the second direction. The inlet 21, the guide section 22, the diffuser section 23, and the outlet 24 are connected sequentially. The first direction and the second direction are perpendicular to each other.
[0024] In this embodiment, the adhesive spray body has two flow channels 2. The adhesive enters the guide section 22 through the adhesive inlet 21, then flows to the expansion section 23, and finally flows out through the adhesive outlet 24, resulting in two streams of adhesive, which greatly improves the adhesive application efficiency. It is worth noting that adjusting the width of the adhesive outlet 24 and the cross-sectional area of the expansion section 23 can obtain adhesives of different widths and thicknesses to meet the adhesive application needs of different parts of the vehicle body; furthermore, by increasing the number of flow channels 2, multiple streams of adhesive can be obtained in a single application, further improving the adhesive application efficiency.
[0025] In addition, such as Figure 2 A cross-sectional view of this application is shown. Figure 2 In the middle, the first direction is the extension direction of the axis of the guide section 22, and the second direction is the extension direction perpendicular to the axis of the glue inlet 21.
[0026] Furthermore, the flow guiding section 22 includes a first DC section 221 and a second DC section 222. The first DC section 221 is formed along the first direction, and the second DC section 222 is formed along the second direction. One end of the first DC section 221 is connected to the glue inlet 21, and the other end is connected to the second DC section 222. By setting the first and second DC sections 222, the glue entering the glue inlet 21 is better guided and flows into the flow expanding section 23.
[0027] To ensure smoother flow of the adhesive into the spray nozzle, both the first direct current section 221 and the second direct current section 222 are cylindrical. Firstly, the cylindrical cavity allows for more uniform force distribution on the adhesive in all directions upon entry into the nozzle, ensuring smooth and uniform flow. Secondly, according to fluid mechanics principles, circular pipes experience relatively less pressure loss during fluid transmission, allowing the adhesive to flow more smoothly into the spray nozzle and helping to maintain stable pressure. This makes the coating process more stable and reliable, especially during long-term coating operations, better maintaining the spray speed and intensity, and improving coating efficiency. Furthermore, the absence of sharp corners in the circular pipes prevents impurities or particles in the adhesive from accumulating and clogging within the guide section 22, reducing coating interruptions or unevenness caused by blockages and improving the continuity and stability of the coating operation.
[0028] Furthermore, in order to ensure that the two sprayed adhesive streams can be automatically joined together after a single application using the nozzle described in this embodiment, the distance between the two adhesive outlets is set to ≤3.5mm. Here, 3.5mm is the optimal distance obtained by the inventors after numerous tests and experiments, suitable for liquid damping adhesive (LASD), and capable of ensuring a good connection between the two adhesive streams sprayed from the nozzle, effectively preventing adhesive stacking and waste.
[0029] Furthermore, the cross-sectional area of the flow-expanding section 23 gradually increases along the second direction. On the one hand, this allows sufficient space for the adhesive to diffuse and redistribute after entering the nozzle, resulting in a more uniform flow rate and volume of the adhesive at the outlet 24. This helps achieve a more uniform coating effect, avoids situations where there is too much or too little adhesive in certain areas, and improves the coating quality. On the other hand, it increases the flow path and space of the adhesive, reducing the flow rate and releasing and buffering the pressure. This helps control the spray speed and flow rate of the adhesive, reducing problems such as splashing and atomization caused by excessive flow rate, and improving the accuracy and stability of the coating.
[0030] Furthermore, the cross-sectional area of the nozzle body 1 remains constant along the second direction and then gradually decreases. On the one hand, this makes the shape of the nozzle body 1 match the cross-sectional change of the flow channel 2 opened inside it; on the other hand, it helps to reduce the weight of the nozzle, and the overall structure is lightweight after being connected to the glue applicator, making it convenient for users to operate.
[0031] Furthermore, the nozzle body 1 is also provided with a snap-fit groove 11, which is located near the glue inlet 21. The snap-fit groove 11 is used to snap with the glue applicator rod, so as to facilitate the connection and disassembly of the glue applicator nozzle and the glue applicator rod.
[0032] This application also provides an automotive adhesive spraying device, comprising: a spray gun, an adhesive applicator, and a nozzle for applying adhesive to automobiles as described above. One end of the adhesive applicator is detachably connected to the spray gun, and the other end is engaged with the nozzle. The components of this automotive adhesive spraying device are detachably connected, facilitating disassembly and assembly. Furthermore, using this device allows for at least two coats of adhesive at a time, resulting in high application efficiency and saving labor costs.
[0033] In summary, the nozzle for automotive adhesive application provided in this embodiment employs a dual-channel linear nozzle to handle high-frequency spraying operations, effectively improving spraying efficiency and ensuring good spraying quality.
[0034] This specification discloses the present application with reference to the accompanying drawings and also enables those skilled in the art to implement the application, including making and using any device or system, employing suitable materials, and using any combination of methods. The scope of this application is defined by the claimed technical solution and includes other instances that would occur to those skilled in the art. Such other instances shall be considered to fall within the scope of protection defined by the claimed technical solution, provided that they include structural elements that are not different from the literal language of the claimed technical solution, or contain equivalent structural elements that are not substantially different from the literal language of the claimed technical solution.
Claims
1. A nozzle for automotive glue application, characterized in that, The application relates to a nozzle for automobile glue coating. The nozzle body is provided with at least two flow channels, and the two flow channels are arranged in parallel and at intervals; the flow channel comprises a glue inlet, a flow guide section, an expansion section and a glue outlet; the glue inlet is arranged on the upper surface of the nozzle body along a first direction; the flow guide section and the expansion section are sequentially arranged in the nozzle body along a second direction; the glue outlet is arranged on the nozzle body along the second direction; the glue inlet, the flow guide section, the expansion section and the glue outlet are sequentially communicated; and the first direction is perpendicular to the second direction. The flow guide section comprises a first straight flow section and a second straight flow section; the first straight flow section is arranged along the first direction; the second straight flow section is arranged along the second direction; one end of the first straight flow section is communicated with the glue inlet; and the other end of the first straight flow section is communicated with the second straight flow section.
2. The nozzle for automotive gluing according to claim 1, characterized in that, The first straight flow section and the second straight flow section are both in a cylindrical shape.
3. The nozzle for automotive gluing according to claim 2, characterized in that, The interval distance between two adjacent glue inlets is less than or equal to 3.5 mm.
4. The nozzle for automotive gluing according to claim 1, characterized in that: The cross-sectional area of the expansion section gradually increases along the second direction.
5. The nozzle for automotive gluing according to claim 1, wherein The cross-sectional area of the nozzle body first remains unchanged and then gradually decreases along the second direction.
6. The nozzle for automotive gluing according to claim 5, characterized in that, A clamping groove is further arranged on the nozzle body; the clamping groove is arranged close to the glue inlet; and the clamping groove is used for clamping a glue coating rod.
7. The nozzle for automotive gluing according to claim 6, characterized in that, The application relates to a nozzle for automobile glue coating.
8. An automobile glue spraying device, characterized by comprising: The nozzle body is provided with at least two flow channels, and the two flow channels are arranged in parallel and at intervals; the flow channel comprises a glue inlet, a flow guide section, an expansion section and a glue outlet; the glue inlet is arranged on the upper surface of the nozzle body along a first direction; the flow guide section and the expansion section are sequentially arranged in the nozzle body along a second direction; the glue outlet is arranged on the nozzle body along the second direction; the glue inlet, the flow guide section, the expansion section and the glue outlet are sequentially communicated; and the first direction is perpendicular to the second direction. The flow guide section comprises a first straight flow section and a second straight flow section; the first straight flow section is arranged along the first direction; the second straight flow section is arranged along the second direction; one end of the first straight flow section is communicated with the glue inlet; and the other end of the first straight flow section is communicated with the second straight flow section. The first straight flow section and the second straight flow section are both in a cylindrical shape. The interval distance between two adjacent glue inlets is less than or equal to 3.5 mm. The cross-sectional area of the expansion section gradually increases along the second direction. The cross-sectional area of the nozzle body first remains unchanged and then gradually decreases along the second direction. A clamping groove is further arranged on the nozzle body; the clamping groove is arranged close to the glue inlet; and the clamping groove is used for clamping a glue coating rod.