A glue nozzle capable of solving the glue bubble of automobile hemming glue

Abstract

The utility model discloses a can solve the glue bubble of automobile hemming glue glue nozzle, and this device includes glue injection unit, and glue injection unit includes glue injection pipe body and glue outlet, the glue outlet sets up at one side of glue injection pipe body, and glue injection pipe body is communicated with the glue outlet, and the glue outlet is semicircular bulge structure, and its amplitude radius is matched with automobile hem width, and makes the hollow exhaust passage of forming in the middle part of glue line, and this device is through with the glue outlet design is semicircular bulge structure, and its amplitude radius is matched with automobile hem width, and makes the glue line middle part that forms after beating glue can form hollow exhaust passage naturally. When the body hem enters the drying room high temperature and is toasted, and the residual air in the hem expands after being heated, can be smoothly discharged through the hollow exhaust passage of the middle part of glue line, effectively avoided the problem that air will glue line and is formed glue bubble, improved the appearance quality and the sealing property of the body of sealing glue, guaranteed the structure strength and the service life of the body.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a nozzle that can solve the problem of glue bubbles in automobile folding. Background Technology

[0002] In automobile manufacturing, applying sealant to the folded edges of the car body is a crucial process. This process involves injecting sealant into the folded edges of the car body, which not only seals the body components to prevent rainwater and dust from entering the interior, but also enhances the structural strength of the folded edges, improves the overall vibration and impact resistance of the car body, and ensures the safety and reliability of the vehicle during operation.

[0003] Existing car body folds are typically designed as flat structures, and the corresponding sealant nozzles are mostly flat and wide. In actual application, the flat, wide nozzle fits snugly against the flat fold, and the injected sealant completely covers the fold surface. However, after sealant application, the car body needs to be baked in a high-temperature oven to cure the sealant. During this baking process, residual air inside the fold expands due to heat and attempts to escape through the sealant line. Because the existing flat sealant line structure is dense and the air escape channels are narrow, the expanding air cannot escape smoothly, thus pushing up the sealant line and forming bubbles. These bubbles not only severely affect the car body's appearance, causing defects such as bumps and unevenness on the surface, but also damage the sealant's sealing performance, reducing the car body's waterproof and dustproof effects. Furthermore, they weaken the structural strength of the fold, adversely affecting the overall quality and lifespan of the vehicle, thus presenting limitations. Utility Model Content

[0004] The purpose of this invention is to provide a nozzle that can solve the problem of glue bubbles in automotive edge folding, thereby addressing the issues raised in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a glue nozzle capable of solving the problem of glue bubbles in automotive edge folding, comprising a glue injection unit, wherein the glue injection unit includes a glue injection tube body and a glue outlet: The glue outlet is located on one side of the glue injection tube body, and the glue injection tube body is connected to the glue outlet. The glue outlet is a semi-circular raised structure with a radius of curvature that matches the width of the car's folded edge, so that a hollow venting channel is formed in the middle of the glue line.

[0006] Preferably, a fixing thread is provided on one side of the glue injection tube.

[0007] Preferably, a rotating head is rotatably connected to the other side of the glue injection tube. The glue injection tube is connected to the rotating head, and the rotating head can rotate 180° around the axis of the glue injection tube. The rotating head is used to adapt to different folding trajectories.

[0008] Preferably, the inside of the injection tube is provided with a flow guiding cavity, the cross-section of the flow guiding cavity is trapezoidal and gradually changes, and the flow guiding cavity is smoothly connected to the rotating head.

[0009] Preferably, the width of the glue outlet is adapted to the width of the automotive fold, to ensure that both sides of the glue line completely cover the fold.

[0010] Preferably, a glue supply hose is connected to one side of the glue injection tube, and a sealing ring is provided at the connection between the glue supply hose and the glue injection tube.

[0011] The technical effects and advantages of this utility model are as follows: This device designs the glue outlet as a semi-circular raised structure with a radius of curvature matching the width of the car's folded edge. This allows a hollow venting channel to naturally form in the center of the glue line after application. When the car body folded edge enters the high-temperature baking oven, any residual air inside the folded edge expands due to heat and can be smoothly discharged through the hollow venting channel in the center of the glue line. This effectively prevents air from pushing up the glue line and forming bubbles, improving the appearance quality of the car body and the sealing performance of the sealant, thus ensuring the structural strength and service life of the car body. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the flow guiding cavity of this utility model; Figure 3 This is a schematic diagram of the actual glue injection process of this utility model.

[0013] In the diagram: 1. Injection tube body; 2. Injection port; 3. Fixing thread; 4. Rotating head; 5. Flow guide cavity; 6. Injection hose. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] This utility model provides, for example Figures 1 to 2 The nozzle shown is capable of solving the problem of glue bubbles in automotive edge bending. It includes a glue injection unit, which comprises a glue injection tube body 1 and a glue outlet 2. The glue outlet 2 is located on one side of the glue injection tube body 1. The glue injection tube body 1 is connected to the glue outlet 2. The glue outlet 2 is a semi-circular raised structure. Its radius of curvature matches the width of the car's folded edge, so that a hollow exhaust channel is formed in the middle of the glue line.

[0016] Example 1: In this example, the core principle of the device in preventing air bubbles lies in the precise matching between the semi-circular raised structure of the adhesive outlet 2 and the width of the vehicle body fold. When the sealant is extruded from the semi-circular raised adhesive outlet 2, it forms a line shape on the fold surface with both sides adhered and a hollow bottom. This shape naturally creates a hollow venting channel at the bottom of the adhesive line. During the subsequent high-temperature baking process, the residual air inside the vehicle body fold expands due to heat and is smoothly discharged along the hollow venting channel at the bottom of the adhesive line, avoiding the problem of traditional flat adhesive lines being unable to expel air due to their tight structure, thus preventing the adhesive line from being pushed up. At the same time, the width of the adhesive outlet 2 matches the width of the fold, ensuring that both sides of the adhesive line completely cover the fold surface. While achieving the venting function, it also ensures the sealing performance of the sealant, solving the air bubble problem without affecting the sealing effect of the vehicle body fold.

[0017] like Figure 1 , Figure 3 The nozzle shown is capable of solving the problem of glue bubbles in automotive edge bending. It includes a glue injection unit, which comprises a glue injection tube body 1 and a glue outlet 2. The glue outlet 2 is located on one side of the glue injection tube body 1. The glue injection tube body 1 is connected to the glue outlet 2. The glue outlet 2 is a semi-circular raised structure. Its radius of curvature matches the width of the car's folded edge, so that a hollow exhaust channel is formed in the middle of the glue line.

[0018] One side of the glue injection tube 1 has a fixing thread 3. The specifications of the fixing thread 3 are designed according to the interface specifications of common external glue supply equipment, so that the glue injection tube 1 can be tightly connected to the external glue supply equipment through the fixing thread 3 during actual use, preventing loosening during glue application. The other side of the glue injection tube 1 is rotatably connected to a rotating head 4. The glue injection tube 1 and the rotating head 4 are connected. The rotating head 4 can rotate 360° around the axis of the glue injection tube 1. The rotating head 4 is used to adapt to different folding trajectories. When facing different body folding trajectories, the operator can manually rotate the rotating head 4 to adjust the glue dispensing direction, so that the glue nozzle can accurately adapt to the folding trajectory for glue application. The inside of the glue injection tube 1 has a guide cavity 5. The cross-section of the guide cavity 5 is trapezoidal and gradually changes. The guide cavity 5 is smoothly connected to the rotating head 4. From the end of the glue injection tube 1 connected to the rotating head 4 to the end connected to the glue outlet 2, the cross-sectional area of ​​the guide cavity 5 gradually changes, realizing the guidance and pressure stabilization of the sealant. The connection between the flow guide cavity 5 and the rotating head 4 features a smooth transition design. Precision machining removes sharp edges and protrusions from the connection area, reducing resistance to sealant flow. The width of the outlet 2 is adapted to the width of the automotive fold, ensuring complete coverage of the fold on both sides of the adhesive line. A supply hose 6 is connected to one side of the injection tube 1. A sealing ring is installed at the connection between the supply hose 6 and the injection tube 1. The sealing ring is made of oil-resistant and high-temperature-resistant rubber, which tightly conforms to the outer wall of both the supply hose 6 and the injection tube 1, enhancing the sealant's tightness and preventing leakage.

[0019] Example 2: In this example, when applying the nozzle to the folding edge of a car body, the nozzle is first connected to the external equipment: it is stably connected to the external glue supply device through the fixed thread 3 on one side of the glue injection tube 1. Simultaneously, the glue supply hose 6 is connected to the glue injection tube 1 via a quick connector, and the installation status of the sealing ring at the connection is checked to ensure there is no risk of sealant leakage. Next, the nozzle angle is adjusted according to the folding edge trajectory of the car body. The rotating head 4 on the other side of the glue injection tube 1 is manually rotated to a suitable position around the axis of the glue injection tube 1, ensuring that the outlet 2 is precisely matched with the folding edge trajectory. After starting the external glue supply device, the sealant enters the guide cavity 5 inside the glue injection tube 1 through the glue supply hose 6. Under the action of the trapezoidal gradient structure of the guide cavity 5, the sealant achieves a stable and pressure-controlled flow. Then, through the connecting channel between the glue injection tube 1 and the outlet 2, it is evenly extruded from the semi-circular raised outlet 2 to the folding edge of the car body.

[0020] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A glue nozzle capable of solving the glue bubble of automobile hemming glue, characterized in that, The injection glue unit comprises an injection glue pipe body (1) and a glue outlet (2). The glue outlet (2) is arranged on one side of the injection glue pipe body (1), the injection glue pipe body (1) is communicated with the glue outlet (2), the glue outlet (2) is a semicircular protruding structure, the radius of curvature of the glue outlet (2) is matched with the width of the automobile folded edge, and a hollow exhaust passage is formed in the middle of the glue line.

2. The glue nozzle capable of solving the glue bubble of the automobile hemming glue according to claim 1, characterized in that, A fixing thread (3) is arranged on one side of the injection glue pipe body (1).

3. The glue nozzle capable of solving the glue bubble of the automobile hemming glue according to claim 1, characterized in that, A rotating head (4) is rotatably connected to the other side of the injection glue pipe body (1), the injection glue pipe body (1) is communicated with the rotating head (4), the rotating head (4) can rotate by 360 degrees around the axis of the injection glue pipe body (1), and the rotating head (4) is used for adapting to different folded edge tracks.

4. The glue nozzle capable of solving the glue bubble of the automobile hemming glue according to claim 1, characterized in that, A flow guide cavity (5) is arranged in the injection glue pipe body (1), the cross section of the flow guide cavity (5) is trapezoidal and gradually changes, and the flow guide cavity (5) is smoothly connected with the rotating head (4).

5. The glue nozzle capable of solving the glue bubble of the automobile hemming glue according to claim 1, characterized in that, The width of the glue outlet (2) is matched with the width of the automobile folded edge, so as to ensure that the glue line on both sides completely covers the folded edge.

6. The glue nozzle capable of solving the glue bubble of the automobile hemming glue according to claim 1, characterized in that, A glue supply hose (6) is connected to one side of the injection glue pipe body (1), and a sealing ring is arranged at the connection between the glue supply hose (6) and the injection glue pipe body (1).

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