Leakage-proof caulking gun with good sealing performance
By introducing the design of a sealing cover, a protective tube and a sealing ring into the caulking gun, the problems of colloid solidification and gun clogging are solved, and the convenient use of a leak-proof caulking gun with good sealing performance is achieved.
Patent Information
- Application Number
- CN202422237073.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-09-12
AI Technical Summary
The gun head of the existing caulking gun lacks an effective sealing structure, which causes the colloid to fail to solidify due to long-term contact with the outside world and the gun to be blocked, affecting subsequent caulking work.
A leak-proof caulking gun with good sealing performance is designed. It adopts a sealing cover and a protective tube structure. The glue liquid is sealed through a sealing ring and a threaded connection. The protective tube seals the glue injection pipe after the glue injection is completed, and the connecting screw provides a support handle.
It effectively prevents the colloid from solidifying, reduces the probability of gun clogging, facilitates subsequent use and carrying, and improves the convenience of using the caulking gun.
Smart Images

Figure CN223393761U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of glue guns, in particular to a leak-proof glue gun with good sealing performance. Background Art
[0002] A caulking gun is a tool for bonding, sealing, caulking, and applying glue. It is a simple mechanical device that uses the principle of leverage. When used with a glue bucket or glue stick, it can easily squeeze the glue out of the bucket through the pointed nozzle, which can effectively save operation time. It is generally widely used in industries such as building decoration, electronic appliances, automobiles and auto parts, ships and containers.
[0003] The caulking guns currently used with glue barrels are usually open, while those used with glue sticks usually require a sealed caulking gun. In the prior art, when the glue stick is unsealed and placed in the barrel of the caulking gun, since the gun head of the caulking gun is not provided with an effective sealing structure, it is easy for the unused colloid to be in contact with the external connection for a long time, which can easily cause the colloid to fail to solidify. At the same time, it can also cause the gun of the caulking gun to be blocked, which in turn causes inconvenience to the subsequent gluing work. Therefore, a leak-proof caulking gun with good sealing performance is proposed. Utility Model Content
[0004] The purpose of the present invention is to solve the problem that after the glue stick is opened and placed in the barrel of a caulking gun, since the gun head of the caulking gun is not provided with an effective sealing structure, it is easy for the unused colloid to be in contact with the external connection for a long time, which can easily cause the colloid to fail to solidify and also cause the gun of the caulking gun to be blocked, thereby causing inconvenience to the subsequent gluing work. The present invention provides a leak-proof caulking gun with good sealing performance.
[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:
[0006] A leak-proof caulking gun with good sealing performance comprises a caulking gun body, a sealing cover is provided at one end of the caulking gun body, a leak-proof mechanism is provided inside the sealing cover, a caulking tube is fixedly installed at one end of the sealing cover, and a sealing mechanism is provided at one end of the caulking tube; the sealing mechanism comprises a protective tube, the protective tube is inserted on the outer wall of the caulking tube, and a connecting screw is fixedly installed at one end of the protective tube, an external thread is provided on the side wall of the caulking tube, an internal thread is provided on the inner wall of the protective tube, and the protective tube and the caulking tube are threadedly connected, a positioning screw is fixedly installed on the side wall of the caulking gun body, and the positioning screw is matched with the connecting screw.
[0007] Preferably, the anti-leakage mechanism includes a sealing ring, which is fixedly installed in the sealing cover. A stepped groove is provided on the tube wall of the glue gun body, and the sealing ring is matched with the stepped groove.
[0008] Preferably, the blocking cover is provided with an internal thread on one side of the sealing ring, the glue gun body is provided with an external thread on one side of the stepped groove, and the blocking cover is screwed onto the glue gun body.
[0009] The beneficial effects of the utility model are as follows:
[0010] 1. In the present invention, after the glue stick is opened, it is placed in the pipeline of the glue gun body, and then the sealing cap is screwed and installed, so that the sealing ring is inserted in the stepped groove for sealing. In this way, during the gluing process, the glue liquid will not enter the thread between the sealing cap and the glue gun body, which can facilitate the assembly and disassembly of the sealing cap in the later stage. In addition, a protective tube is screwed and installed on the glue injection tube, which can seal the glue injection tube after the gluing is completed, thereby preventing the unused glue from being in contact with the external air for a long time, thus preventing the glue from being seriously solidified, facilitating reuse in the later stage, and reducing the probability of clogging of the glue gun. At the same time, the connecting screw provided can fix it on the positioning screw tube after the protective tube is removed, thereby providing a support handle for the glue gun body, which can facilitate the carrying and use of the glue gun. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a front view schematic diagram of the overall three-dimensional connection structure of the utility model;
[0012] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the sealing cover in the utility model;
[0013] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the protective tube in the utility model.
[0014] Figure numerals: 1, glue gun body; 2, glue injection tube; 3, sealing cover; 4, protective tube; 5, connecting screw; 6, positioning screw; 7, stepped groove; 8, sealing ring. DETAILED DESCRIPTION
[0015] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0017] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In addition, the terms "first," "second," etc. are used only to distinguish the descriptions and are not to be understood as indicating or implying relative importance.
[0018] In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.
[0019] like Figure 1-3 As shown, a leak-proof caulking gun with good sealing performance includes a caulking gun body 1, a sealing cover 3 is provided at one end of the caulking gun body 1, a leak-proof mechanism is provided in the sealing cover 3, the leak-proof mechanism includes a sealing ring 8, the sealing ring 8 is fixedly installed in the sealing cover 3, a stepped groove 7 is opened on the tube wall of the caulking gun body 1, and the sealing ring 8 is matched with the stepped groove 7.
[0020] An internal thread is provided on the sealing cover 3 on one side of the sealing ring 8, and an external thread is provided on the glue gun body 1 on one side of the stepped groove 7. The sealing cover 3 is screwed onto the glue gun body 1. When the sealing cover 3 is installed on the glue gun body 1, the sealing ring 8 will be inserted into the stepped groove 7 for sealing. In this way, during the gluing process, the glue will not enter the thread between the sealing cover 3 and the glue gun body 1, thereby avoiding the colloid from deepening the solidification between the two, which can facilitate the installation and disassembly of the caulking gun.
[0021] A glue injection tube 2 is fixedly installed at one end of the sealing cover 3, and a sealing mechanism is provided at one end of the glue injection tube 2. The sealing mechanism includes a protective tube 4, which is inserted into the outer wall of the glue injection tube 2. The protective tube 4 is installed on the glue injection tube 2 to seal the glue injection tube 2 after the glue is injected, thereby preventing the unused colloid from being in contact with the external air for a long time, thereby preventing the remaining colloid from being severely solidified, facilitating reuse in the later stage, and reducing the probability of blockage of the glue injection tube 2.
[0022] An external thread is provided on the side wall of the glue injection tube 2, and an internal thread is provided on the inner wall of the protective tube 4. The protective tube 4 and the glue injection tube 2 are threadedly connected. The threaded connection can improve the stability of the protective tube 4 and the glue injection tube 2 after installation.
[0023] A connecting screw 5 is fixedly installed at one end of the protective tube 4, and a positioning screw 6 is fixedly installed on the side wall of the glue gun body 1, and the positioning screw 6 is matched with the connecting screw 5. The connecting screw 5 can be fixed on the positioning screw 6 after the protective tube 4 is removed, thereby providing a support handle for the glue gun body 1 during the gluing process. On the one hand, it can improve stability, and on the other hand, it is convenient for handling and carrying parts.
[0024] In summary: after opening the glue stick, place it in the pipe of the glue gun body 1, and then screw the sealing cover 3 to install it, so that the sealing ring 8 is inserted in the stepped groove 7 for sealing. In this way, the glue will not enter the thread between the sealing cover 3 and the glue gun body 1 during the gluing process. A protective tube 4 is screwed on the glue injection tube 2 to seal the glue injection tube 2 after the gluing is completed, thereby preventing the unused glue from being in contact with the external air for a long time. When gluing, the protective tube 4 can be removed together with the connecting screw 5 and then fixed on the positioning screw 6, thereby providing a support handle for the glue gun body 1, so that the user can move the glue gun by grasping the protective tube 4 during the gluing process.
[0025] The above description is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A leak-proof caulking gun with good sealing performance, characterized in that: The invention comprises a glue gun body (1), wherein one end of the glue gun body (1) is provided with a sealing cover (3), wherein a leak-proof mechanism is provided in the sealing cover (3), and a glue injection tube (2) is fixedly installed on one end of the sealing cover (3), and a sealing mechanism is provided on one end of the glue injection tube (2); the sealing mechanism comprises a protective tube (4), wherein the protective tube (4) is inserted on the outer wall of the glue injection tube (2), and a connecting screw (5) is fixedly installed on one end of the protective tube (4), an external thread is provided on the side wall of the glue injection tube (2), an internal thread is provided on the inner wall of the protective tube (4), and the protective tube (4) and the glue injection tube (2) are screw-connected, a positioning screw (6) is fixedly installed on the side wall of the glue gun body (1), and the positioning screw (6) and the connecting screw (5) are matched.
2. A leak-proof caulking gun with good sealing performance according to claim 1, characterized in that: The anti-leakage mechanism comprises a sealing ring (8), which is fixedly mounted in the sealing cover (3); a stepped groove (7) is provided on the tube wall of the glue gun body (1), and the sealing ring (8) is matched with the stepped groove (7).
3. The leak-proof caulking gun with good sealing performance according to claim 1, characterized in that: The sealing cover (3) is provided with an internal thread on one side of the sealing ring (8), and the glue gun body (1) is provided with an external thread on one side of the stepped groove (7). The sealing cover (3) is screwed onto the glue gun body (1).