Improved structure of hot melt glue gun

By introducing a guide tube and a propulsion mechanism into the hot melt glue gun, the safety and convenience issues when changing hot melt glue strips are solved, ensuring the safety and stability of the replacement process and improving the user experience.

CN224475267UActive Publication Date: 2026-07-10林佳汶

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
林佳汶
Filing Date
2025-08-05
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing hot melt glue guns pose safety hazards when replacing hot melt glue strips, are inconvenient to operate, and are prone to burns due to contact with high-temperature heated parts. Furthermore, accidents may occur as the hot melt glue strip becomes shorter during use.

Method used

A hot melt glue gun structure was designed, including a guide tube and a propulsion mechanism. The guide tube guides new hot melt glue strips to replace old ones, avoiding contact with the heating device and increasing safety. The design of the slide rail and propulsion hole makes the hot melt glue strip propulsion more stable, and a heating switch is set to control the power supply of the heating device.

Benefits of technology

It improves the safety and convenience of changing hot melt glue strips when using hot melt glue guns, ensures stability and safety during use, avoids the risk of burns from high-temperature heating parts, and allows for more stable placement of longer hot melt glue strips.

✦ Generated by Eureka AI based on patent content.

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Abstract

An improved structure of a hot melt glue gun includes a gun body with a guide tube protruding from the rear end. A slide rail is provided on each side of the gun body. A hot melt tube and a pusher are located inside the gun body. The hot melt tube has a nozzle at its front end. The pusher has a push hole through it and its bottom slides on the slide rail. A hot melt glue strip passes through the guide tube and push hole into the hot melt tube. The hot melt tube is equipped with a heating device to heat and melt the hot melt glue strip. The pusher is combined with a pusher mechanism, which has several connecting rods and a trigger. Pressing the trigger pulls the connecting rods to slide the pusher, thus pushing the hot melt glue strip forward and extruding the melted glue strip from the nozzle. A spring is provided between the connecting rods and the gun body to pull it back.
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Description

Technical Field

[0001] This utility model relates to an improved structure of a hot melt glue gun, specifically an improved structure of a hot melt glue gun that is safer and more convenient. Background Technology

[0002] Note that hot melt glue guns are commonly used bonding tools in art and crafts. Their gun-like operation allows for quick and accurate application of glue to joined areas. However, existing hot melt glue guns inevitably present some problems. They heat up electrically, generating extremely high temperatures that can cause burns and blisters if accidentally touched. Furthermore, as the glue strip melts and is extruded, it becomes shorter and shorter, requiring replacement. Getting too close to the heating element during replacement can lead to accidents. Therefore, hot melt glue guns need safety mechanisms for installing and replacing the glue strip to make them more convenient to use.

[0003] Therefore, in view of this, the creator came up with the idea of ​​creation and designed it based on many years of experience. After extensive discussions, sample testing, and multiple revisions and improvements, this utility model was finally launched. Utility Model Content

[0004] This invention provides an improved structure for a hot melt glue gun, which has a safer structure, making the installation and replacement of hot melt glue strips safer and more convenient.

[0005] Technical characteristics of the problem-solving process:

[0006] This utility model provides an improved structure for a hot melt glue gun, comprising a hot melt glue gun having a gun body with a guide tube protruding from the rear end of the gun body, and a slide rail on each side of the gun body. A hot melt tube and a propulsion component are disposed inside the gun body. The front end of the hot melt tube has a nozzle, and the propulsion component has a propulsion hole. The bottom of the propulsion component slides on the slide rail. A hot melt glue strip passes through the guide tube and the propulsion hole into the hot melt tube. The hot melt tube is equipped with a heating device to heat and melt the hot melt glue strip. The propulsion component is combined with a propulsion mechanism, which has several connecting rods and a trigger. Pressing the trigger drives the connecting rods to pull the propulsion component to slide, thereby pushing the hot melt glue strip forward and extruding the melted hot melt glue strip from the nozzle. A spring is provided between the connecting rods and the gun body to pull it back.

[0007] Preferably, the gun body is composed of two symmetrical gun body units.

[0008] Preferably, the gun body has at least one window extending through its side.

[0009] Preferably, the hot melt glue gun is equipped with a heating switch to control the power supply status of the heating device.

[0010] The main purpose of this invention is that, when the hot melt adhesive strip is heated, melted, and extruded, becoming shorter and shorter, another hot melt adhesive strip can be guided through the guide tube to push the previous hot melt adhesive strip, thereby further avoiding contact with the hot melt tube heated by the heating device, increasing safety during use. Furthermore, the support from the guide tube and the push hole makes the hot melt adhesive strip more stable during push-in, and the protruding guide tube can more stably hold a longer hot melt adhesive strip.

[0011] Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description and the accompanying drawings. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present invention.

[0013] Figure 2 This is an exploded view of the present invention.

[0014] Figure 3 This is a schematic diagram of the guide tube of this utility model being inserted into the hot melt adhesive strip.

[0015] Figure 4 This is an internal structural diagram of the guide tube of this utility model with the hot melt adhesive strip inserted.

[0016] Figure 5 This is a schematic diagram of the guide tube of this utility model being inserted into a longer hot melt adhesive strip.

[0017] Figure 6 This is a front view of another embodiment of the present invention.

[0018] Symbol explanation:

[0019] Part of this utility model:

[0020] Hot melt glue gun --- (10) Gun body --- (11)

[0021] Guide tube ----(111) Slide rail -----(112)

[0022] Window -----(113) Hot melt pipe ----(12)

[0023] Muzzle -- (121) Propulsion component -- (13)

[0024] Propulsion hole ----(131) Heating device ---(14)

[0025] Propulsion mechanism ---(15) Connecting rod -----(151)

[0026] Trigger -----(152) Spring -----(16)

[0027] Heating switch --- (17)

[0028] Hot melt adhesive strips --- (20)

[0029] Gun body unit --- (A) Detailed Implementation

[0030] To further understand and recognize the purpose, features, and effects of this utility model, the following are examples with reference to the accompanying drawings, and detailed explanations are provided below:

[0031] First, please let Figures 1 to 4 As shown, this utility model provides an improved structure for a hot melt glue gun, which includes a hot melt glue gun (10). The hot melt glue gun (10) has a gun body (11), a guide tube (111) protruding from the rear end of the gun body (11), and a slide rail (112) on each side of the gun body (11). A hot melt tube (12) and a pusher (13) are provided inside the gun body (11). The front end of the hot melt tube (12) is provided with a nozzle (121). The pusher (13) has a push hole (131) through it. The bottom of the pusher (13) slides on the slide rail (112). A hot melt glue strip (20) passes through the guide tube (111) and... The push hole (131) is inserted into the hot melt tube (12). The hot melt tube (12) is equipped with a heating device (14) to heat up and melt the hot melt adhesive strip (20) by energizing it. The push member (13) is combined with a push mechanism (15). The push mechanism (15) has several connecting rods (151) and a trigger (152). After pressing the trigger (152), the connecting rods (151) are driven to pull the push member (13) to slide, thereby pushing the hot melt adhesive strip (20) forward and squeezing the melted hot melt adhesive strip (20) out of the gun muzzle (121). A spring (16) is provided between the connecting rod (151) and the gun body (11) to pull it back.

[0032] With the above structure, as the hot melt adhesive strip (20) is heated, melted, and extruded, becoming shorter and shorter, another hot melt adhesive strip (20) can be guided through the guide tube (111) to push the previous hot melt adhesive strip (20), thereby further avoiding contact with the hot melt tube (12) heated by the heating device (14), increasing safety during use. Furthermore, the support from the guide tube (111) and the push hole (131) makes the hot melt adhesive strip (20) more stable during push-in. Figure 5 As shown, the protruding guide tube (111) can more securely hold the longer hot melt adhesive strip (20) in preparation.

[0033] Depend on Figure 2 As shown, this utility model provides an improved structure for a hot melt glue gun, wherein the gun body (11) is composed of two symmetrical gun body units (A).

[0034] Depend on Figure 2 As shown, this utility model provides an improved structure for a hot melt glue gun, wherein at least one window (113) is provided through the side of the gun body (11), through which the hot melt tube (12) can be seen to track the remaining length of the hot melt glue strip (20).

[0035] Depend on Figure 6 As shown, this is another embodiment of the present invention. The present invention provides an improved structure for a hot melt glue gun, wherein the hot melt glue gun (10) is provided with a heating switch (17) to control the power supply status of the heating device (14).

[0036] The above description is only a preferred embodiment of this utility model and should not be construed as limiting the scope of this utility model; that is, all equivalent changes and modifications made in accordance with the scope of the patent application of this utility model should still fall within the scope of this utility model patent.

Claims

1. An improved structure for a hot melt glue gun, comprising a hot melt glue gun, wherein: The hot melt glue gun has a gun body with a guide tube protruding from the rear end. A slide rail is provided on each side of the gun body. A hot melt tube and a propulsion component are located inside the gun body. The front end of the hot melt tube has a nozzle. The propulsion component has a propulsion hole through it, and its bottom slides on the slide rail. A hot melt glue strip passes through the guide tube and the propulsion hole into the hot melt tube. The hot melt tube is equipped with a heating device to heat and melt the hot melt glue strip. The propulsion component is combined with a propulsion mechanism, which has several connecting rods and a trigger. Pressing the trigger drives the connecting rods to pull the propulsion component to slide, thereby pushing the hot melt glue strip forward and extruding the melted hot melt glue strip from the nozzle. A spring is provided between the connecting rods and the gun body to pull it back.

2. The improved structure of the hot melt glue gun as described in claim 1, characterized in that, The gun body is composed of two symmetrical gun body units.

3. The improved structure of the hot melt glue gun as described in claim 1, characterized in that, The gun body has at least one window running through its side.

4. The improved structure of the hot melt glue gun as described in claim 1, characterized in that, The hot melt glue gun is equipped with a heating switch to control the power supply status of the heating device.