A type of glue gun
By integrating a cutting blade and a protective plate into the caulking gun, the problem of clogging caused by the easy hardening of caulking glue is solved, enabling stable cutting and safe operation without the need for additional tools, thus improving construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHAOQING CHANGJING PRECISION HARDWARE PRODUCTS CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-03
AI Technical Summary
Silicone sealant hardens easily upon contact with air, causing blockages at the unused tube end. Traditional silicone sealant guns lack cutting capabilities, requiring additional tools to handle the blockage, increasing operational steps and impacting construction efficiency and quality.
A glass glue gun with a cutting blade was designed. The nozzle is fixed by a linkage stop when the handle is rotated, and the protective plate prevents hand contact, so as to achieve precise contact between the nozzle and the cutting blade, simplify the opening process and improve safety.
It can stably cut the glue head without the need for additional tools, improve construction efficiency, ensure a smooth cut, reduce glue waste, and enhance the convenience and safety of the tool, making it especially suitable for beginners.
Smart Images

Figure CN224443608U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of glass glue guns, and specifically relates to a glass glue gun. Background Technology
[0002] Silicone sealant is a sealing and adhesive material with silicone rubber as its main component. It combines bonding and sealing functions and is widely used for joint treatment of various materials such as glass, ceramics, and metals. It is waterproof, moisture-proof, and resistant to high and low temperatures. After curing, it forms an elastic adhesive layer. Suitable for door and window installation, bathroom sealing, and grouting during renovations, it is easy to use and highly durable. A silicone sealant gun is a manual or pneumatic tool designed for extruding viscous adhesives such as silicone sealant and grease guns. It consists of a gun body, push rod, trigger, and other components. Pressing the trigger pushes the push rod to squeeze the adhesive tube, achieving uniform adhesive output. It is compatible with different sizes of adhesive tubes and is widely used in door and window installation, bathroom sealing, and grouting during renovations. It is labor-saving and allows for precise control of the adhesive dispensing amount, making it an essential tool for improving the efficiency and quality of silicone sealant application. It is suitable for various renovation and repair work needs.
[0003] The characteristic of silicone sealant that it hardens easily upon contact with air can cause unused sealant to solidify and clog the end of the tube after opening, affecting subsequent use. However, silicone sealant guns themselves do not have a cutting function and cannot handle hardened sealant heads or newly opened tubes. Additional tools such as utility knives are required, which increases the number of steps involved. Especially for beginners, improper cutting can lead to uneven sealant dispensing, indirectly affecting construction efficiency and sealing effect, becoming a significant drawback when using both tools together. Utility Model Content
[0004] In response to the problems mentioned in the background art, the purpose of this utility model is to provide a glass glue gun to solve the problem that glass glue is easy to harden after contact with air, which will cause the glue at the end of the tube to solidify and block after opening, affecting subsequent use. However, the glass glue gun itself does not have a cutting function and cannot handle hardened glue head or open new glue tubes. It is necessary to use additional tools such as utility knives, which increases the problem of operation steps to a certain extent.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] A caulking gun includes a gun body, a caulking chamber and a movable chamber on one side of the gun body, a mounting base fixedly connected to the outside of the gun body, a protective plate fixedly connected to the outside of the mounting base, and a cutting blade fixedly connected to the outside of the mounting base. An adjusting rod is slidably connected inside the caulking chamber, with a pushing plate fixedly connected to one end of the adjusting rod, and the other end of the adjusting rod passing through the movable chamber and extending outwards from the outside of the gun body. A pushing plate, a first return spring, and a second return spring are installed on the outside of the adjusting rod. A handle is installed on the outside of the movable chamber, with a stop fixedly connected to the side of the handle near the mounting base. The stop block is circular, and the back of the cutting blade has a semi-circular blade. No additional tools are needed; the silicone sealant nozzle is fixed by rotating the handle and linking the stop block, ensuring a precise fit between the nozzle and the cutting blade. The cutting process is stable and controllable, avoiding deviation or uneven force during manual cutting. Moreover, the integrated operation simplifies the silicone sealant opening process, especially solving the problem of traditional glue guns lacking a cutting function and requiring a separate blade search. This improves construction efficiency, ensures a clean cut, reduces sealant waste, and allows even beginners to easily handle the nozzle, enhancing the tool's practicality and convenience.
[0007] As a preferred technical solution, the protective plate protrudes a certain distance from the mounting base and is U-shaped. This effectively blocks direct contact between the user's hand and the cutting blade, physically cutting off the path for the hand to touch the sharp blade. This avoids the risk of cuts caused by hand slippage, accidental contact, or improper force control during operation. It eliminates the safety hazards caused by exposed blades and provides reliable protection for the hand, making cutting operations safer. Especially for beginners or in fast-paced work scenarios, it enhances the safety performance of the tool while ensuring convenience, thus improving the user's sense of security.
[0008] As a preferred technical solution, a first reset spring is fixedly connected to one side of the movable chamber, and the other end of the first reset spring is fixedly connected to the propulsion plate. The first reset spring is sleeved on the outside of the adjusting push rod. A second reset spring is fixedly connected to the other side of the movable chamber, and the other end of the second reset spring is fixedly connected to the propulsion plate. The second reset spring is sleeved on the outside of the adjusting push rod. The diameter of the first reset spring is larger than that of the second reset spring, and the elastic force of the first reset spring is greater than that of the second reset spring. The first reset spring and the second reset spring are placed on both sides of the propulsion plate to form a bidirectional elastic force cooperation, which not only ensures the stable advancement of the propulsion plate, but also reduces the impact through weak elasticity buffering, thereby improving the reset accuracy and operation smoothness.
[0009] As a preferred technical solution, a propulsion device is installed on one side of the glue gun body. The propulsion device is sleeved on the outside of the adjusting push rod. A fixed post is fixedly connected to the side of the glue gun body near the propulsion device. A third return spring is fixedly connected to one side of the propulsion device. The other end of the third return spring is fixedly connected to the glue gun body and sleeved on the outside of the fixed post. The cooperation between the propulsion device, the adjusting push rod, and the fixed post makes the stretching and contraction of the third return spring more stable, avoiding deformation and deviation. At the same time, the propulsion device can precisely control the stroke of the adjusting push rod, and with the elasticity of the third return spring, it can achieve rapid reset, improving glue dispensing continuity and operating efficiency. The structure is compact and durable.
[0010] In summary, the present invention has the following main advantages:
[0011] Firstly, in this utility model, the nozzle of the silicone sealant is attached to the blade of the cutting blade on the glue gun body. Then, by rotating the handle, the handle drives the stop block to hold the silicone sealant nozzle in place, and the cutting blade cuts the silicone sealant nozzle. No additional tools are required. The silicone sealant nozzle is fixed by rotating the handle and the stop block, so that the nozzle and the cutting blade are precisely attached. The cutting process is stable and controllable, avoiding deviation or uneven force when cutting manually. Moreover, the integrated operation simplifies the silicone sealant opening steps, especially solving the problem of traditional glue guns not having a cutting function and needing to find the blade separately. This improves construction efficiency, ensures a clean cut, reduces glue waste, and allows even novices to easily complete nozzle processing, enhancing the practicality and convenience of the tool.
[0012] Secondly, in this utility model, the protective plate prevents the user's hand from directly contacting the cutting edge of the glue gun body. Therefore, it has the effect of preventing dangerous exposure and protecting the hand. It can effectively block the direct contact between the user's hand and the cutting edge, physically cutting off the path for the hand to touch the sharp blade. This avoids the risk of cuts caused by hand slippage, accidental contact, or improper force control during operation. It not only eliminates the safety hazards caused by exposed blades, but also provides reliable protection for the hand, making the cutting operation safer. Especially for beginners or in fast-paced operation scenarios, it enhances the safety performance of the tool while ensuring convenience, and improves the sense of security when using it. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0014] Figure 2 This is the utility model Figure 1 Enlarged view of part A;
[0015] Figure 3 This is a three-dimensional structural diagram of the other side of this utility model;
[0016] Figure 4This is a schematic diagram of the planar structure of this utility model.
[0017] Reference numerals: 1. Handle; 2. Glue gun body; 3. Adjusting push rod; 4. Glue pushing plate; 5. Mounting base; 6. Protective plate; 7. Cutting blade; 9. Blade; 10. Propeller plate; 11. First return spring; 12. Second return spring; 13. Glue tank; 14. Movable tank; 15. Propulsion device; 16. Fixed column; 17. Third return spring; 18. Stop block. Detailed Implementation
[0018] Example
[0019] refer to Figures 1 to 4 The glass glue gun described in this embodiment includes a glue gun body 2. A glass glue tank 13 and a movable tank 14 are provided on one side of the glue gun body 2. A mounting base 5 is fixedly connected to the outside of the glue gun body 2. A protective plate 6 is fixedly connected to the outside of the mounting base 5. A cutting blade 7 is fixedly connected to the outside of the mounting base 5. An adjusting push rod 3 is slidably connected inside the glass glue tank 13. A glue pushing plate 4 is fixedly connected to one end of the adjusting push rod 3. The other end of the adjusting push rod 3 passes through the movable tank 14 and extends out of the outside of the glue gun body 2. A push plate 10, a first return spring 11 and a second return spring 12 are installed on the outside of the adjusting push rod 3. A handle 1 is installed on the outside of the movable tank 14. A blade 9 is formed on the back of the cutting blade 7. The blade 9 is semi-circular. A stop block 18 is fixedly connected to the side of the handle 1 near the mounting base 5. The stop block 18 is circular. The nozzle of the glass glue is brought into contact with the blade 9 of the cutting blade 7 on the glue gun body 2. Then, by rotating the handle 1, the handle 1 drives the stop block 18 to press against the nozzle of the glass glue, and the cutting blade 7 cuts the nozzle of the glass glue.
[0020] refer to Figure 2 A first return spring 11 is fixedly connected to one side of the movable chamber 14, and the other end of the first return spring 11 is fixedly connected to the push plate 10. The first return spring 11 is sleeved on the outside of the adjusting push rod 3. A second return spring 12 is fixedly connected to the other side of the movable chamber 14, and the other end of the second return spring 12 is fixedly connected to the push plate 10. The second return spring 12 is sleeved on the outside of the adjusting push rod 3. The diameter of the first return spring 11 is larger than the diameter of the second return spring 12, and the elastic force of the first return spring 11 is greater than the elastic force of the second return spring 12. When the glass glue is placed into the glass glue tank 13 of the glue gun body 2, when the handle 1 swings, it contacts the push plate 10 and forces the push plate 10 to drive the adjusting push rod 3 forward. The adjusting push rod 3 drives the glue-pushing plate 4 to squeeze the glass glue. At the same time, the push plate 10 presses against the first return spring 11, and the first return spring 11 is compressed. At the same time, the second return spring 12 is stretched. At this time, the reset of the second return spring 12 eliminates the resistance when the push plate 10 is pressed against the first return spring 11 when the top of the handle 1 swings forward.
[0021] refer to Figure 4 A propulsion device 15 is installed on one side of the glue gun body 2. The propulsion device 15 is sleeved on the outside of the adjusting push rod 3. A fixing post 16 is fixedly connected to the side of the glue gun body 2 near the propulsion device 15. A third return spring 17 is fixedly connected to one side of the propulsion device 15. The other end of the third return spring 17 is fixedly connected to the glue gun body 2. The third return spring 17 is sleeved on the outside of the fixing post 16. When the propulsion device 15 is pushed, it slides along the adjusting push rod 3 and stretches the third return spring 17. The fixing post 16 provides guidance for the spring. After the propulsion device 15 is released, the third return spring 17 contracts with the help of elasticity, driving the propulsion device 15 to return to its original position. At the same time, the fixing post 16 restricts the deformation direction of the third return spring 17 to ensure that the propulsion device 15 returns to its stable position, completing one propulsion and return cycle.
[0022] refer to Figures 1 to 2 The protective plate 6 protrudes from the mounting base 5 by a certain distance. The protective plate 6 is U-shaped. The protective plate 6 can prevent the user's hand from directly contacting the blade 9 of the cutting knife 7 on the glue gun body 2, thus preventing dangerous exposure and protecting the hand.
[0023] Operating principle and advantages: First, fill the glass glue tank 13 with glass glue. Turn the handle 1 to move the stop block 18 against the glass glue nozzle, so that it fits against the semi-circular blade 9 on the mounting base 5. The nozzle is cut with the help of the protective plate 6. Push the propulsion device 15, which slides along the adjusting push rod 3 and stretches the third return spring 17, causing the adjusting push rod 3 to move forward. The glue-pushing plate 4 squeezes the glass glue to achieve glue dispensing. When the handle 1 is pressed, the propulsion piece 10 in the movable chamber 14 is compressed, compressing the first return spring 11. At the same time, the second return spring 12 stretches to assist in buffering. After releasing the handle 1 and the propulsion device 15, the first return spring 11 rebounds and drives the propulsion piece 10 to return to its original position. The second return spring 12 contracts to assist the adjusting push rod 3 to return to its original position. The third return spring 17 pulls the propulsion device 15 back to its original position, completing one operation cycle. The overall linkage ensures stable glue dispensing and smooth resetting.
[0024] This invention requires no additional tools. By rotating the handle 1 and rotating the linkage stop 18, the silicone sealant nozzle is fixed, ensuring precise contact between the nozzle and the cutting blade 7 and the cutting edge 9. The cutting process is stable and controllable, avoiding deviation or uneven force during manual cutting. Moreover, the integrated operation simplifies the silicone sealant opening process, especially solving the problem of traditional glue guns lacking cutting functions and requiring separate blade searching. This improves construction efficiency, ensures a clean cut, reduces sealant waste, and allows even beginners to easily handle the nozzle, enhancing the tool's practicality and convenience.
Claims
1. A glass glue gun comprising a glue gun body, characterized by: The glue gun body has a glass glue chamber and a movable chamber on one side. A mounting base is fixedly connected to the outside of the glue gun body. A protective plate is fixedly connected to the outside of the mounting base. A cutting blade is fixedly connected to the outside of the mounting base. An adjusting push rod is slidably connected inside the glass glue chamber. A glue-pushing pressure plate is fixedly connected to one end of the adjusting push rod. The other end of the adjusting push rod passes through the movable chamber and extends out of the outside of the glue gun body. A push plate, a first return spring, and a second return spring are installed on the outside of the adjusting push rod. A handle is installed on the outside of the movable chamber.
2. A glass glue gun according to claim 1, wherein: The back of the cutting blade has a blade edge, which is semi-circular in shape.
3. The glass glue gun of claim 1, wherein: A first return spring is fixedly connected to one side of the movable chamber, and the other end of the first return spring is fixedly connected to the propulsion plate. The first return spring is sleeved on the outside of the adjusting push rod. A second return spring is fixedly connected to the other side of the movable chamber, and the other end of the second return spring is fixedly connected to the propulsion plate. The second return spring is sleeved on the outside of the adjusting push rod.
4. A glass glue gun according to claim 3, wherein: The diameter of the first reset spring is greater than that of the second reset spring, and the elastic force of the first reset spring is greater than that of the second reset spring.
5. The glass glue gun of claim 1, wherein: A propulsion device is installed on one side of the glue gun body. The propulsion device is sleeved on the outside of the adjusting push rod. A fixing post is fixedly connected to the side of the glue gun body near the propulsion device. A third return spring is fixedly connected to one side of the propulsion device. The other end of the third return spring is fixedly connected to the glue gun body. The third return spring is sleeved on the outside of the fixing post.
6. The glass glue gun of claim 1, wherein: A stop block is fixedly connected to the side of the handle near the mounting base, and the stop block is circular in shape.
7. The glass glue gun of claim 1, wherein: The protective plate protrudes from the mounting base by a certain distance, and the protective plate is U-shaped.