Glass curtain wall sealant gun

Abstract

The utility model discloses a sealant gun for a glass curtain wall. The sealant gun comprises a grip, a gun barrel, a push rod and a trigger mechanism, the pair of rotating frames are mounted on the left side and the right side of the gun barrel, and adhesive tapes are detachably fixed on the rotating frames; the positioning piece is arranged at the head of the gun barrel, a pair of limiting holes penetrating in the length direction of the gun barrel is symmetrically formed in the left side and the right side of a glue outlet of the sealing glue barrel on the positioning piece, the adhesive tape penetrates through the limiting holes, and the distance between the inner sides of the two limiting holes is equal to the width of a gap between adjacent glass curtain walls. According to the sealant gun, adhesive tape pasting can be synchronously completed in the sealant injection process, the independent manual adhesive tape pasting procedure is not needed, the construction time is effectively saved, the working efficiency is improved, meanwhile, the operation that a constructor frequently switches tools during high-altitude operation is reduced, and the high-altitude operation risk is reduced; and the limiting holes play a precise positioning role on the adhesive tape, so that the alignment precision of the adhesive tape and the gap is ensured, and the requirement on construction skills of workers is reduced.

Description

Technical Field

[0001] This utility model mainly relates to the field of glass curtain wall construction technology, and in particular to a glass curtain wall sealant gun. Background Technology

[0002] Glass curtain walls, a widely used building envelope in modern architecture, are primarily composed of glass panels and a metal support system. They not only offer excellent lighting performance and a transparent visual effect but also significantly enhance the overall aesthetic value of the building. During the installation of glass curtain walls, a gap of a certain width must be left between adjacent glass panels to accommodate thermal expansion and contraction caused by temperature changes. To ensure the building's airtightness, watertightness, and structural connection strength, elastic sealant must be injected into this gap. The sealant cures to form a continuous sealing layer, simultaneously achieving a flexible connection between the glass units.

[0003] In existing technologies, the sealant application process involves three independent steps: first, protective tape must be manually applied along both edges of the gap to prevent sealant contamination of the glass surface during the application process; then, sealant is applied using a manual or pneumatic sealant gun; and finally, the protective tape must be manually removed after the sealant has initially cured. This step-by-step approach has significant technical drawbacks: the manual tape application step is time-consuming and labor-intensive, especially in high-rise building operations, where workers need to frequently switch tools, reducing work efficiency and increasing the risks of working at heights; furthermore, manual tape application relies entirely on manual control, which can easily lead to positional deviations and insufficient alignment accuracy between the tape and the gap, thus placing higher demands on the workers' skills.

[0004] While current commercially available sealant guns have seen continuous improvements in dispensing flow control and nozzle design, their functional design remains limited to a single sealant application process, failing to overcome the reliance on auxiliary procedures in traditional processes. With the increasing scale of building curtain wall projects and rising demands for construction efficiency, there is an urgent need for functional integration and innovation in sealant guns. Structural improvements should enable simultaneous execution of sealant application and tape application, thereby reducing the skill requirements for workers and improving construction efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a glass curtain wall sealant gun.

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

[0007] A glass curtain wall sealant gun includes a barrel with a handle fixed to its tail. A push rod is installed through the barrel along its length from the tail, and the push rod is connected to a trigger mechanism located at the tail of the barrel. Under the drive of the trigger mechanism, the push rod can move forward, thereby pushing a sealant cartridge installed inside the barrel. The gun also includes a pair of rotating frames mounted on the left and right sides of the barrel, on which adhesive tape is detachably fixed. A positioning element is located at the head of the barrel, and the positioning element has a pair of limiting holes symmetrically formed on the left and right sides of the sealant cartridge's outlet, extending along the length of the barrel. The adhesive tape passes through the limiting holes, and the inner distance between the two limiting holes is equal to the gap width between adjacent glass curtain walls. When using this glass curtain wall sealant gun, the adhesive tape is first fitted onto the rotating frames, and one end of the tape is passed through the limiting hole formed on the positioning element and then adhered to the edge of the gap between adjacent glass curtain walls. When applying the sealant, the operator pulls the trigger and moves the sealant gun backward. As the sealant gun moves, the tape detaches from the roll and adheres to the edge of the gap between adjacent glass curtain walls. Since the inner spacing of the limiting holes equals the width of the gap between adjacent glass curtain walls, the worker only needs to control the direction of the sealant gun's movement to always follow the direction of the gap between the adjacent glass curtain walls to ensure the tape accurately adheres to the edge of the gap. Simultaneously, driven by the trigger mechanism, sealant is extruded from the sealant cartridge and fills the gap between the adjacent glass curtain walls. By installing rotating brackets to fix the tape on both sides of the gun barrel and setting a positioning component with limiting holes at the head of the gun barrel, the tape can be applied simultaneously during the glue injection process, eliminating the need for a separate manual tape application step. This effectively saves construction time, improves work efficiency, and reduces the need for construction workers to frequently switch tools when working at heights, thus lowering the risks associated with working at heights. Furthermore, the limiting holes provide precise positioning for the tape, ensuring accurate alignment between the tape and the gap, and reducing the skill requirements for workers.

[0008] As a further improvement to the above technical solution:

[0009] The rotating frame is circular, with its central axis rotatably connected to the gun barrel. The tape is detachably mounted on the rotating frame, with an interference fit between the two. The circular rotating frame and the gun barrel rotatably connect, allowing the tape to rotate smoothly with the movement of the glue gun during application, ensuring stable tape output. The detachable and interference fit installation method facilitates tape replacement after use, improving the ease of use of the sealing glue gun.

[0010] The sealant gun also includes an injection tube, one end of which is detachably fitted onto the nozzle. The injection tube is arc-shaped, with a central angle β greater than or equal to 30° and less than or equal to 90°. The arc-shaped injection tube makes it easier for workers to hold and allows for more precise injection of sealant into the gaps, improving the accuracy and uniformity of the injection, ensuring that the sealant forms a good sealing layer within the gaps, and enhancing the airtightness and watertightness of the building.

[0011] The sealant gun also includes an injection tube, one end of which is detachably fitted onto the injection port; the injection tube is configured as an adjustable-curvature corrugated tube. The adjustable-curvature corrugated injection tube can flexibly adapt to glass curtain wall gaps of different shapes and angles, making it easier for workers to hold. Compared to fixed-shape injection tubes, it has a wider range of applications, can meet diverse construction needs, and further enhances the flexibility and applicability of construction.

[0012] The outer diameter of the glue injection tube is equal to the width of the gap between adjacent glass curtain walls.

[0013] The outer diameter of the injection tube is equal to the width of the gap between the glass curtain walls, allowing for better alignment during injection and preventing sealant from overflowing onto the glass surface, reducing subsequent cleaning work. It also ensures fullness and a tight seal. Furthermore, because the limiting holes are symmetrically positioned on both sides of the injection port, the equal outer diameter of the injection tube means the injection port remains aligned with the gap during injection. This provides positioning for the limiting holes, ensuring the tape adheres perfectly to the edge of the gap between adjacent glass curtain walls.

[0014] A pressure plate is fitted onto the injection tube. The width of the pressure plate is greater than the gap width between adjacent glass curtain walls. The end of the injection tube opposite to the injection port protrudes from the lower surface of the pressure plate. During the injection process, the lower surface of the pressure plate is in close contact with the glass curtain wall surface. When excessive sealant causes overflow, the pressure plate can, to a certain extent, limit its diffusion outwards from the glass curtain wall, thereby reducing contamination. Furthermore, because the injection tube protrudes from the lower surface of the pressure plate, it ensures that the injection tube is always inserted into the gap of the glass curtain wall, thus ensuring accurate injection of sealant into the gap.

[0015] A cleaning cotton block is fixed to the lower surface of the pressure plate. The cleaning cotton block is located behind the sealant injection tube, and its width is equal to the gap width between adjacent glass curtain walls. By setting the cleaning block, it can remove dust from the gaps between adjacent glass curtain walls as it moves with the sealant gun, thereby making the sealant bond more tightly to the glass curtain wall.

[0016] The cleaning pad is detachably connected to the pressure plate. This detachable connection allows for easy replacement of the cleaning pad when it becomes dirty, ensuring consistent cleaning effectiveness and reducing operating costs.

[0017] The lower surface of the pressure plate has a smoothing protrusion, which is located in front of the sealant injection tube and its width is equal to the gap width between adjacent glass curtain walls. The smoothing protrusion can perform a preliminary smoothing treatment on the freshly injected sealant during sealant injection, making the sealant surface smoother and more aesthetically pleasing, thus improving the construction quality of the sealant. Attached Figure Description

[0018] Figure 1 This is a front view diagram of a sealant gun for glass curtain walls;

[0019] Figure 2 This is a side view of a sealant gun for glass curtain walls;

[0020] Figure 3 This is a schematic diagram (partial cross-section) illustrating the process of using a sealant gun for glass curtain walls.

[0021] Figure 4 yes Figure 1 A cross-sectional schematic diagram of AA.

[0022] The labels in the diagram represent: 1. Grip; 2. Barrel; 3. Push rod; 4. Trigger mechanism; 5. Sealing tube; 51. Glue outlet; 6. Rotating frame; 7. Adhesive tape; 8. Positioning component; 81. Limiting hole; 9. Glue injection tube; 91. Pressure plate; 92. Cleaning cotton pad; 93. Surface trowel. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example

[0025] like Figures 1 to 4As shown, the glass curtain wall sealant gun of this embodiment includes a cylindrical aluminum alloy barrel 2 with a handle 1 welded to its tail. A stainless steel push rod 3 with a diameter of 15mm is installed through the barrel 2. It is installed in conjunction with a trigger mechanism 4 (the structure, connection method and working principle of the trigger mechanism 4 are existing technologies and will not be described in detail here). Driven by the trigger mechanism 4, the push rod 3 can move forward, thereby pushing the sealant tube 5 installed in the barrel 2 forward, so that the sealant is squeezed out from the front end outlet 51 of the sealant tube 5. A positioning member 8 is fixed on the lower front end of the barrel 2. The positioning member 8 is integrally formed with the barrel 2. It has symmetrically opened limiting holes 81 with a width of 2cm on its left and right sides (the width of the tape 7 is also 2cm). The distance between the inner sides of the two holes is controlled at 1.5cm (consistent with the width of the curtain wall gap, and the specification can be adjusted according to the actual situation). The tape 7 passes through the limiting hole 81 and is positioned at the edge of the curtain wall gap. Meanwhile, a pair of rotating frames 6 are installed on the left and right sides of the gun barrel 2. The rotating frames 6 are circular, and their central axis is rotatably connected to the gun barrel 2. Adhesive tape 7 is fitted on the rotating frames 6, and the two are interference-fitted. During operation, the construction worker inserts a roll of protective adhesive tape 7 into the rotating frames 6 on both sides of the gun barrel. The rotating shaft of the rotating frame 6 is connected to the gun barrel 2. After the end of the tape passes through the limiting hole 81, it is pasted at the beginning of the curtain wall gap. When the trigger mechanism 4 is pulled, the operator simultaneously drags the glue gun backward at a uniform speed. At this time, under the guidance of the limiting hole 81, the adhesive tape 7 is automatically pasted onto the glass surface with a trajectory completely parallel to the curtain wall gap, achieving precise alignment. At the same time, sealant is injected into the gap through the glue outlet 51, completing the synchronous operation of glue injection and tape application.

[0026] The sealant gun also includes an arc-shaped injection tube 9 with a central angle β equal to 60° (in other embodiments, the central angle can be adjusted according to actual conditions, satisfying 30°≤β≤90°; alternatively, the injection tube 9 can be set as a corrugated tube, thus facilitating adjustment of the central angle as needed). One end is detachably fitted onto the dispensing port 51, and the other end is inserted into the curtain wall gap. The outer diameter of the injection tube 9 is equal to 1.5cm, consistent with the gap width of the adjacent glass curtain wall. During construction, the operator holds the sealant gun in a natural grip. The curved shape of the injection tube 9 places the wrist at the optimal ergonomic angle, significantly reducing operator fatigue. During the injection process, the front end of the injection tube 9 is always inserted into the gap, and with the guiding action of the limiting hole 81, it ensures that the tape can be pasted along the edge of the mold cavity gap.

[0027] Building upon the above, a pressure plate 91 is fitted onto the injection tube 9. The pressure plate 91 is injection molded from ABS plastic and is 6cm wide. One end of the injection tube 9, away from the outlet 51, protrudes from the lower surface of the pressure plate 91 to facilitate insertion into the curtain wall gap. Simultaneously, a cleaning cotton block 92 is fixed to the lower surface of the pressure plate 91. The cleaning cotton block 92 is located behind the injection tube 9 and is 1.5cm wide, secured to the pressure plate 91 with Velcro. Furthermore, a finishing protrusion 93 is formed on the lower surface of the pressure plate 91, located in front of the injection tube 9 and also 1.5cm wide. During installation, the bottom surface of the pressure plate 91 is flush with the glass surface, and the front end of the injection tube 9 protrudes 3mm from the bottom surface of the pressure plate before being inserted into the gap. The cleaning cotton block 92 automatically wipes the edges of the gap to remove dust as it moves, while the finishing protrusion 93 also moves along with it, smoothing the sealant surface and improving aesthetics.

[0028] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.

Claims

1. A glass curtain wall sealant gun, comprising a barrel (2) with a handle (1) fixed at its tail, a push rod (3) extending through the barrel (2) along its length, the push rod (3) being connected to a trigger mechanism (4) located at the tail of the barrel (2); under the drive of the trigger mechanism (4), the push rod (3) can move forward, thereby pushing a sealant cartridge (5) installed inside the barrel (2); characterized in that: It also includes a pair of rotating frames (6) installed on the left and right sides of the gun barrel (2), on which tape (7) is detachably fixed; and a positioning member (8) provided at the head of the gun barrel (2), wherein the positioning member (8) has a pair of limiting holes (81) symmetrically formed on the left and right sides of the outlet (51) of the sealing tube (5) and extending along the length of the gun barrel (2), the tape (7) passes through the limiting holes (81), and the inner distance between the two limiting holes (81) is equal to the gap width of the adjacent glass curtain wall.

2. The glass curtain wall sealant gun according to claim 1, characterized in that: The rotating frame (6) is circular, and its central axis is rotatably connected to the gun barrel (2); the tape (7) is detachably fitted onto the rotating frame (6), and the two are interference fit.

3. The glass curtain wall sealant gun according to claim 1, characterized in that: The sealant gun also includes a glue injection tube (9), one end of which is detachably fitted onto the glue outlet (51); the glue injection tube (9) is arc-shaped, and its central angle β is greater than or equal to 30° and less than or equal to 90°.

4. The glass curtain wall sealant gun according to claim 1, characterized in that: The sealant gun also includes a glue injection tube (9), one end of which is detachably fitted onto the glue outlet (51); the glue injection tube (9) is configured as a corrugated tube with adjustable curvature.

5. The glass curtain wall sealant gun according to claim 3 or 4, characterized in that: The outer diameter of the glue injection tube (9) is equal to the gap width between adjacent glass curtain walls.

6. The glass curtain wall sealant gun according to claim 5, characterized in that: A pressure plate (91) is fitted on the glue injection tube (9). The width of the pressure plate (91) is greater than the gap width between adjacent glass curtain walls. One end of the glue injection tube (9) away from the glue outlet (51) protrudes from the lower surface of the pressure plate (91).

7. The glass curtain wall sealant gun according to claim 6, characterized in that: A cleaning cotton block (92) is fixed on the lower surface of the pressure plate (91). The cleaning cotton block (92) is located behind the glue injection tube (9), and its width is equal to the gap width between adjacent glass curtain walls.

8. The glass curtain wall sealant gun according to claim 7, characterized in that: The cleaning cotton block (92) is detachably connected to the pressure plate (91).

9. The glass curtain wall sealant gun according to claim 6, characterized in that: The lower surface of the pressure plate (91) is formed with a troweling protrusion (93), which is located in front of the glue injection tube (9) and its width is equal to the gap width between adjacent glass curtain walls.

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