Extrusion nozzle suitable for sealing the peripheral gap of a boss

Abstract

The utility model discloses an extrusion glue nozzle suitable for boss periphery gap seal, including glue outlet section and shunt board, the one end of glue outlet section is the connecting end, and the other end is the free end, the shunt board is located glue outlet section inside, the free end of glue outlet section is close to the shunt board, the inner wall of glue outlet section is connected with the shunt board through inner support, and the edge of shunt board is equipped with the glue way between the inner wall of glue outlet section, and the inner chamber of glue outlet section on the both sides of shunt board is communicated through this glue way. The remarkable effect of the utility model is that the gluing step of worker can be simplified, the gluing difficulty is reduced, the gluing speed is accelerated, and the gluing quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering, specifically to a tool for sealing gaps. Background Technology

[0002] Sheet metal parts, die castings, and other workpieces, products, and equipment almost always have holes for connection via bolts, rivets, and other components. The bolt heads and rivet joints press against the openings of these holes, forming bosses. Gaps exist between the bosses and the hole openings. In applications requiring waterproofing and dustproofing, these gaps need to be properly sealed. For example, FDS screws (thermal fusion rotary tapping screws, also known as flow drill screws) connected to the water-cooling plate of an automotive battery box have heads that press against the water-cooling plate, forming bosses. The gaps between the bosses and the water-cooling plate need to be sealed.

[0003] In existing technology, workers use a caulking gun to apply liquid adhesive to the gaps described above, and wait for the adhesive to cure to form a seal. However, the nozzle of existing caulking guns is needle-shaped, requiring workers to operate the nozzle at a uniform and stable speed around the boss while simultaneously pressing the dispensing switch evenly to ensure uniform adhesive application around the gaps. This process is time-consuming and labor-intensive for the operator; moreover, the quality of adhesive application around the boss is highly dependent on the worker's operating habits and skills, making it relatively difficult to achieve high-quality adhesive application for sealing around the boss. Utility Model Content

[0004] To expedite the application of adhesive to the gaps around the boss, simplify the application process, and reduce the difficulty of application, this invention provides an extrusion structure for sealant. The main technical solution adopted is as follows: A glue extrusion nozzle suitable for sealing gaps around bosses, the key features of which are: a glue dispensing cylinder and a flow divider, wherein one end of the glue dispensing cylinder is a connecting end and the other end is a free end; The flow divider is located inside the glue dispensing cylinder, near the free end of the glue dispensing cylinder. The flow divider is connected to the inner wall of the glue dispensing cylinder by an internal support. A glue flow channel is provided between the edge of the flow divider and the inner wall of the glue dispensing cylinder, which connects the inner cavities of the glue dispensing cylinder on both sides of the flow divider.

[0005] The connecting end of the glue dispensing tube is used to receive glue from the glue gun, and the free end of the glue dispensing tube is used to discharge glue outwards. The inner diameter of the free end of the glue dispensing tube can be larger than the outer size of the boss to be glued, so as to completely cover the boss to be glued. When the glue enters the glue dispensing tube, it is divided by the flow divider plate to form an annular glue ring, and then flows from the glue channel to the free end of the glue dispensing tube. Thus, the glue ring is directly squeezed into the gap around the boss in one go.

[0006] In practice, workers only need to place the free end of the glue dispensing tube over the boss and press the glue gun's dispensing switch appropriately to complete the glue application. There's no need to move the glue dispensing tube around the boss, nor is it necessary to spend excessive time monitoring and coordinating the glue dispensing volume and application position. This offers the advantages of faster glue application and guaranteed glue quality. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the external structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention. Detailed Implementation

[0008] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0009] like Figure 1 and Figure 2 As shown, a glue extrusion nozzle suitable for sealing gaps around a boss, particularly suitable for sealing planar gaps around a boss, includes a glue dispensing cylinder 2 and a flow divider 3, wherein one end of the glue dispensing cylinder 2 is a connecting end and the other end is a free end; A preferred embodiment is as follows: the dispensing cylinder 2 is cylindrical, the flow divider 3 is disc-shaped, the flow divider 3 is located inside the dispensing cylinder 2, the outer diameter of the flow divider 3 is smaller than the inner diameter of the dispensing cylinder 2, the flow divider 3 is close to the free end of the dispensing cylinder 2, the center lines of the dispensing cylinder 2 and the flow divider 3 coincide, and a flow channel is provided between the edge of the flow divider 3 and the inner wall of the dispensing cylinder 2, which connects the inner cavities of the dispensing cylinder 2 on both sides of the flow divider 3.

[0010] The inner diameter of the glue dispensing cylinder 2 is larger than the maximum external dimensions of the boss to be sealed, so as to surround the boss to be sealed. The connecting end of the glue dispensing cylinder 2 is used to receive glue from the glue gun, and the free end of the glue dispensing cylinder 2 is used to discharge glue outward. When the glue enters the glue dispensing cylinder 2, it is divided by the flow divider 3 to form an annular glue ring. The glue ring flows from the glue channel to the free end of the glue dispensing cylinder 2. Thus, the glue ring can be squeezed directly into the gap around the boss to be sealed in one go.

[0011] To ensure relative stability between the flow divider 3 and the dispensing cylinder 2, the flow divider 3 and the inner wall of the dispensing cylinder 2 are connected by an inner support 4. The inner support 4 can be designed with reference to various existing structures, serving to stabilize the connection between the flow divider 3 and the dispensing cylinder 2. One possible structure for the inner support 4 is that the edge of the flow divider 3 is fixedly connected to the inner wall of the dispensing cylinder 2 via two connecting arms, forming the inner support 4. These two connecting arms are evenly arranged circumferentially around the flow divider 3. Although the connecting arms will divide the glue flow channel into a discontinuous state, since the glue is a viscous liquid, it will re-aggregate and form a complete glue ring after flowing through the connecting arms. Therefore, a suitable connecting arm will not hinder the formation of the glue ring. Of course, the connecting arms can be designed to be thinner to minimize interference with the glue ring. If other structures of the inner support 4 are used, their dimensions also need to be optimized. Those skilled in the art should be familiar with dimensional optimization and will not elaborate further here.

[0012] A further preferred technical solution is that a concave boss positioning cavity 3a is provided on one side of the flow divider 3, and the boss positioning cavity 3a faces the free end of the glue dispensing cylinder 2. The function of the boss positioning cavity 3a is to wrap around the boss to be sealed to achieve positioning; at this time, a relatively uniform annular glue coating cavity can be formed around the boss to be sealed, and the glue ring mentioned above can be directly squeezed into the annular glue coating cavity, thereby ensuring uniform glue coating. The boss positioning cavity 3a is preferably a circular countersunk hole, and the center line of the boss positioning cavity 3a, the center line of the glue dispensing cylinder 2, and the center line of the flow divider 3 coincide.

[0013] Since different specifications of the bosses to be sealed require different specifications of dispensing cylinders 2 (including the inner diameter of the dispensing cylinder 2, the outer diameter of the diverter plate 3, and the inner diameter of the boss positioning cavity 3a, etc.), the connecting end of the dispensing cylinder 2 is threaded to facilitate quick assembly and disassembly of the dispensing cylinder 2 and the glue gun. Furthermore, to facilitate threading the dispensing cylinder 2, the outer wall of the dispensing cylinder 2 is provided with at least one locking surface 2a, preferably two locking surfaces 2a. The locking surfaces 2a facilitate threading the dispensing cylinder 2 using tools such as wrenches, and also serve to prevent loosening.

[0014] A more specific implementation is as follows: the end face of the diverter plate 3 facing the free end of the dispensing cylinder 2 is a glue height limiting surface, the glue height limiting surface is located inside the dispensing cylinder 2, and the distance between the glue height limiting surface and the end face of the free end of the dispensing cylinder 2 is 1-3mm.

[0015] The amount of adhesive used to seal the gaps around the boss should be appropriate. Too little adhesive will not seal the gaps well, while too much adhesive will not save costs. Therefore, the function of the adhesive height limiting surface is to limit the filling and coating height of the adhesive close to the edge of the boss.

[0016] The glue dispensing cylinder 2 is connected to a glue gun connector 1 at its connecting end. The connecting end of the glue dispensing cylinder 2 is threadedly connected to the glue gun connector 1. The glue gun connector 1 can be directly connected to the glue gun.

[0017] The specific application scenario for the above extrusion nozzles can be: as extrusion nozzles for FDS screws on the water-cooled plate of automotive battery boxes.

[0018] Beneficial effects: The extrusion nozzle of this utility model can simplify the glue application process for workers, reduce the difficulty of glue application, and has the advantages of speeding up the glue application process and ensuring the quality of glue application.

[0019] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.

Claims

1. A sealing nozzle suitable for sealing gaps around bosses, characterized in that: It includes a glue dispensing cylinder (2) and a flow divider (3), wherein one end of the glue dispensing cylinder (2) is a connecting end and the other end is a free end; The flow divider (3) is located inside the glue dispensing cylinder (2). The flow divider (3) is close to the free end of the glue dispensing cylinder (2). The flow divider (3) is connected to the inner wall of the glue dispensing cylinder (2) through an inner support (4). A glue flow channel is provided between the edge of the flow divider (3) and the inner wall of the glue dispensing cylinder (2). The glue flow channel connects the inner cavities of the glue dispensing cylinder (2) on both sides of the flow divider (3).

2. The extrusion nozzle for sealing gaps around a boss as described in claim 1, characterized in that: The diverter plate (3) has a recessed boss positioning cavity (3a) on one side, which faces the free end of the dispensing cylinder (2).

3. The extrusion nozzle for sealing gaps around a boss as described in claim 1, characterized in that: The edge of the diverter plate (3) is fixedly connected to the inner wall of the dispensing cylinder (2) through two connecting arms, and the two connecting arms form the inner support (4).

4. The extrusion nozzle for sealing gaps around a boss according to claim 1, 2, or 3, characterized in that: The connecting end of the dispensing cylinder (2) is threaded.

5. The extrusion nozzle for sealing gaps around a boss as described in claim 4, characterized in that: The outer wall of the dispensing cylinder (2) is provided with at least one snap-fit ​​surface (2a).

6. The extrusion nozzle for sealing gaps around a boss according to claim 2, characterized in that: The dispensing cylinder (2) is cylindrical, and the flow divider (3) is disc-shaped. The center lines of the dispensing cylinder (2) and the flow divider (3) coincide.

7. The extrusion nozzle for sealing gaps around a boss according to claim 6, characterized in that: The boss positioning cavity (3a) is a circular countersunk hole, and the center line of the boss positioning cavity (3a), the center line of the glue dispensing cylinder (2), and the center line of the diverter plate (3) coincide.

8. The extrusion nozzle for sealing gaps around a boss according to claim 1, 2, 3, 6 or 7, characterized in that: The end face of the diverter plate (3) facing the free end of the dispensing cylinder (2) is the glue height limiting surface. The glue height limiting surface is located inside the dispensing cylinder (2), and the distance between the glue height limiting surface and the end face of the free end of the dispensing cylinder (2) is 1-3mm.

9. The extrusion nozzle for sealing gaps around a boss according to claim 1, 2, 3, 6 or 7, characterized in that: The glue dispensing cylinder (2) is connected to a glue gun connector (1) at its connecting end.

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