Detachable glue nozzle for gluing vehicle body top cover

Abstract

The invention provides a detachable glue nozzle for gluing a top cover of a vehicle body, which is composed of a connecting rod and a glue nozzle head, and the front end of the connecting rod is provided with an external thread which is matched with an internal thread of a connecting part of the glue nozzle head to realize quick assembly and disassembly. The glue nozzle head is integrally designed by adopting a flat glue outlet part, and the glue nozzle head is characterized in that three stainless steel supporting legs are arranged at the bottom of a glue outlet, a first supporting leg (4.5 mm high) in the center and second supporting legs (3.5 mm high) in bilateral symmetry form a millimeter-level height difference combination, and a U-shaped avoiding channel is constructed in a rivet area. During gluing, channels are formed in the left side and the right side of a glue nozzle to reserve a space for a rivet, so that the glue nozzle does not make contact with the rivet to generate interference in the gluing process, continuous, uniform and accurate sealing glue line laying is achieved, and the gluing quality and the sealing reliability of a riveted automobile body are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of automotive adhesive application, specifically to a detachable adhesive nozzle for applying adhesive to a car body roof. Background Technology

[0002] In the automotive body manufacturing industry, laser welding technology is commonly used to connect the roof and side panels. To improve the aesthetics, corrosion resistance, and sealing requirements of the welded area, sealant is usually applied after welding (i.e., at the laser weld seam). Currently, the industry widely uses a flat, wide nozzle design for applying sealant. This nozzle shape matches the flat structure of the laser weld seam well, smoothly guiding the adhesive tape to be applied in the weld area, ensuring a uniform and flat adhesive line, and eliminating the problem of interference in the application path.

[0003] However, with the production of new models, the connection process of the roof area has changed, and a riveting structure has been introduced. This new structure creates local protruding rivets in the roof area. The commonly used flat wide nozzle has significant incompatibility problems under this new structure: the nozzle will mechanically interfere with the protruding rivets on the roof during the process. This interference directly leads to: (1) deviation of the glue application trajectory: the nozzle is lifted or pushed by the rivet, causing the glue line sprayed by the glue gun to deviate from the predetermined path and become skewed; (2) uneven accumulation of glue strips: the nozzle is blocked, causing the glue liquid to be unable to flow smoothly, and glue liquid is prone to accumulate and gather in the area near the rivet, affecting the aesthetics; (3) risk of sealing failure: the skewed, broken or accumulated glue line is difficult to form a continuous and complete sealing layer, which greatly increases the risk of reduced weld sealing performance and vehicle leakage.

[0004] Therefore, for the application of sealant to the weld seams of vehicle body roofs with rivet structures, the existing standard flat wide nozzles present technical obstacles because they cannot effectively avoid the protruding rivet structure. There is an urgent need to develop a new dedicated nozzle solution to solve the above-mentioned interference problem and ensure the quality of the sealant and the reliability of the sealant. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a detachable glue nozzle for applying adhesive to a vehicle body roof. By incorporating a support foot design at the glue outlet of the nozzle and creating channels on both sides of the nozzle to provide space for rivets, the nozzle does not come into contact with or collide with the rivets during the glue application process, thus preventing interference.

[0006] To achieve the above-mentioned technical effects, the present invention adopts the following technical solution:

[0007] A detachable adhesive nozzle for applying sealant to a vehicle roof includes: a connecting rod and an adhesive nozzle head mounted to its front end via a detachable connecting structure; the connecting rod includes a base and a rod body connected thereto, the front end of the rod body having an external thread; the adhesive nozzle head includes a flat dispensing portion and a connecting portion, the connecting portion having an internal thread that mates with the external thread; the lower surface of the dispensing portion has three support feet of unequal height, including a first support foot centrally located and two second support feet symmetrically distributed on both sides thereof, the first support foot having a height of 4.5 mm and the second support feet having a height of 3.5 mm.

[0008] Optionally, the rod body is a straight rod structure with a diameter of φ10mm, and its axial center is provided with a 150° bend.

[0009] Optionally, the width of the adhesive outlet is adapted to the spacing of the body rivets.

[0010] Optionally, the base and the rod are integrally formed from stainless steel, with polished surfaces and blunted edges, and the welds have a smooth transition.

[0011] Optionally, the nozzle is a one-piece molded stainless steel part, and the three support feet and the dispensing part form an integral structure.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The detachable car body roof sealant nozzle provided by this invention has three support feet designed on the glue outlet of the nozzle (the middle positioning support foot is 4.5mm high, and the left and right support feet are 3.5mm high). Channels are formed on the left and right sides of the nozzle to reserve space for rivets, so that the nozzle does not come into contact with or collide with the rivets during the application of automotive sealant and thus improves the water tightness and air tightness of the car, as well as the quality and appearance of the sealant. Attached Figure Description

[0014] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the adhesive nozzle structure for applying sealant to the detachable vehicle roof as described in the embodiment;

[0016] Figure 2 This is a front view of the nozzle described in the embodiment;

[0017] Figure 3 This is a top view of the nozzle described in the embodiment. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, all directional indications (such as up, down, left, right, front, back, bottom, etc.) in this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. Furthermore, descriptions involving "first," "second," etc., in this application 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.

[0021] This embodiment provides, as follows: Figure 1 The illustrated detachable adhesive nozzle for applying sealant to a vehicle roof includes a connecting rod 1 and an adhesive nozzle head 2 mounted on one end of the nozzle. The connecting rod 1 comprises a base 101 and a connecting rod body 102. In this embodiment, the base 101 is made of stainless steel, manufactured using a one-piece molding process, and has undergone surface polishing and burr removal at sharp edges, with a uniform transition at the weld seam. The connecting rod body 102 in this embodiment is made of material with a length of L450mm, a diameter of φ10mm, a bending angle of 150°, and an external thread 103 (M10) at the front end. The connecting rod 1 and the adhesive nozzle head 2 are connected in a detachable manner for quick replacement. In this embodiment, the detachable connection is a threaded connection. Specifically, the inner wall of the outlet has an internal thread, and the outer wall of the inlet has an external thread 103 that matches the internal thread of the outlet. The connection or separation between the connecting rod 1 and the adhesive nozzle head 2 is achieved through the engagement of the external thread 103 and the internal thread.

[0022] like Figure 2As shown, the nozzle 2 includes a flat, one-piece dispensing section and a connecting section 201 for connecting with the connecting rod 1. During dispensing, the adhesive flows out from the dispensing port of the dispensing section. The width of the dispensing section determines the width of the dispensing material, and it can be designed in various sizes to match the spacing of the rivets on the vehicle body. In this embodiment, its width is 40mm. The connecting section 201 has an internal thread that engages with the external thread 103 at the front end of the connecting rod, making the nozzle 2 and the connecting rod 1 a single unit. The nozzle 2 is made of stainless steel. To ensure the efficiency and aesthetics of dispensing, the lower surface of the dispensing section in this embodiment has three support feet of different heights. The support feet serve a positioning function to facilitate the dispensing operation, including a first support foot 202 located in the center and two second support feet 203 symmetrically distributed on both sides. Figure 3 As shown, the height of the support feet is 3.5mm~4.5mm. In this embodiment, the height of the first support foot 202 located in the middle is 4.5mm, and the height of the second support feet 203 on both sides is 3.5mm (the rivet protrusion height is 2mm). It is manufactured using an integral molding process. By designing three support feet on the glue dispensing part (the first support foot 202 in the middle is 4.5mm high, and the second support feet 203 on both sides are 3.5mm high), channels are formed on both sides of the glue nozzle to reserve space for the rivet, preventing the glue nozzle from contacting or colliding with the rivet during glue application and causing interference. The heights of the first support foot 202 and the second support foot 203 can be adapted to vary according to the rivet protrusion height.

[0023] Specific usage process: As shown in the figure, referring to existing technical solutions, first select the appropriate specification of nozzle 2 according to the corresponding vehicle model and usage scenario. When using, install the connecting rod 1 on the matching glue gun and fix it in place. Then, install the nozzle 2 on the connecting rod 1 through the threaded structure. Align the nozzle 2 with the glue application position of the rivet at the weld seam of the vehicle roof, and then use the glue gun to apply the glue. When it is necessary to change to other specifications of nozzle 2, the threaded structure enables a quick replacement operation. This nozzle has an innovative structure with a central 4.5mm high support foot and two 3.5mm high support feet on both sides at the bottom of the glue outlet. It precisely constructs a U-shaped avoidance channel in the rivet area, so that the nozzle forms a stable lifting system based on the millimeter-level height difference of the support feet during the glue application process, completely avoiding physical contact between the nozzle and the rivet. This design eliminates the risk of mechanical interference in traditional solutions, enabling continuous and uniform application of a 40mm wide sealant line. It not only solves the problem of adhesive accumulation in the rivet area, but also improves the water tightness and air tightness of the car body, as well as the quality and appearance of the sealant, providing a zero-interference, high-precision sealant application solution for automobile manufacturing.

[0024] The specific embodiments of the present invention have been described above. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of the present invention.

Claims

1. A detachable adhesive nozzle for applying sealant to a vehicle roof, characterized in that, It includes: a connecting rod and a nozzle head installed at its front end via a detachable connecting structure; the connecting rod includes a base and a rod body connected thereto, the front end of the rod body having an external thread; the nozzle head includes a flat dispensing part and a connecting part, the connecting part having an internal thread that mates with the external thread; the lower surface of the dispensing part has three support feet of different heights, including a first support foot centrally located and two second support feet symmetrically distributed on both sides thereon, the first support foot having a height of 4.5mm and the second support feet having a height of 3.5mm.

2. The adhesive nozzle for applying sealant to a detachable vehicle roof as described in claim 1, characterized in that: The rod is a straight rod structure with a diameter of φ10mm, and a 150° bend is provided in the middle of its axial direction.

3. The adhesive nozzle for applying sealant to a detachable vehicle roof as described in claim 1, characterized in that: The width of the adhesive outlet is adapted to the spacing of the body rivets.

4. The adhesive nozzle for applying sealant to a detachable vehicle roof as described in claim 1, characterized in that: The base and the rod are integrally formed from stainless steel, with polished surfaces and blunted edges, and the welds have a smooth transition.

5. The adhesive nozzle for applying sealant to a detachable vehicle roof as described in claim 1, characterized in that: The nozzle is a one-piece molded stainless steel part, and the three support feet and the dispensing part form an integral structure.

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