A user-friendly two-component glue gun

Abstract

This utility model discloses a user-friendly two-component glue gun, comprising a gun base body with a first mounting port at its rear end for mounting a drying agent tank; a drying agent tube mounted on the gun base body with a connecting pipe at its rear end for connecting to the valve of the drying agent tank; and a glue tube mounted on the feed assembly at its rear end, which, together with the drying agent tube, forms a flow channel. The front end of the glue tube has a gun head, through which the drying agent tube passes. An output channel is provided between the gun head and the outer wall of the drying agent tube. This utility model places the drying agent tank at the rear end of the gun base body, which reduces the weight above the gun base body and balances the center of gravity of the glue gun, allowing users to perform glue spraying operations with less effort. It also allows the drying agent in the drying agent tank to flow more smoothly into the drying agent tube at a faster flow rate. Glue is dispensed by pressing the wrench, and the foamed glue mixed with the drying agent cures rapidly within one minute after dispensing.

Description

Technical Field

[0001] This utility model relates to the field of glue gun equipment, and in particular to a two-component glue gun that is easy to use. Background Technology

[0002] A caulking gun is a tool for applying caulking agent. To improve the drying effect of polyurethane foam sealant, it can be mixed with a drying aid (curing agent).

[0003] Most caulking guns on the market for extruding polyurethane foam sealant are industrial products, inconvenient to operate, and some require electricity, making them unsuitable for simple household tasks. To better suit household tasks and reduce the professional requirements for operation, several dual-channel, two-component caulking guns have been launched on the market. For example, Chinese utility model patent CN202321001272.4 discloses a portable aerosol-type two-component raw material mixing and dispersion system. In this system, the left end of the gun body is connected to a mixing tube for mixing two components, A and B. Component A flowing from the aerosol A component tube and component B flowing from the aerosol B component tube both enter the mixing tube for mixing and are then sprayed out after mixing. In practical applications, since components A and B react in the mixing tube, adhesive can be continuously dispensed during the first use. However, upon reuse, some reactants remain in the mixing tube and solidify, clogging it and preventing smooth dispensing. This necessitates replacing the mixing tube, which is cumbersome. Furthermore, if the blockage occurs at the connection between the mixing tube and the nozzle, disassembly of the mixing tube may become difficult. Additionally, because the mixing tube is disposable, the aforementioned glue gun requires multiple mixing tubes, resulting in high material costs and significant waste.

[0004] To address the aforementioned technical issues, I previously applied for a Chinese utility model patent with patent number 202520912468.1, entitled "A Simple Two-Component Glue Gun." However, in practical application, I found that because both the drying agent canister and the foaming glue canister are mounted on top of the gun body and positioned in front of the handle, the center of gravity of the glue gun is concentrated in the forward position when holding the gun. This results in wrist strain when holding the glue gun with one hand, necessitating the addition of a stock in front of the glue gun for support by the other hand. In other words, it is not easy to operate with one hand, even though many people prefer to operate the glue gun with one hand. Furthermore, when the drying agent canister is placed on top of the gun body, the drying agent in the canister needs to flow through an inflow pipe to enter the drying agent tube. Since the drying agent in the inflow pipe needs to flow from a tributary into the main stream, there is some resistance during the outflow process, resulting in insufficient and unsmooth flow of the drying agent. Improvements are needed. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a user-friendly two-component glue gun.

[0006] The technical solution adopted in this utility model is: a convenient two-component glue gun, comprising:

[0007] The gun holder body includes, from back to front, a first feeding assembly, a main base and a second feeding assembly. The first feeding assembly is provided with a first mounting port for mounting a drying agent canister. The second feeding assembly is provided with a second mounting port for mounting a foaming adhesive canister and an inflow pipe for the foaming adhesive to flow in.

[0008] A drying agent tube is installed on the gun holder body and passes through the main base and the second feeding assembly. The drying agent tube extends in the front-to-back direction, and the rear end of the drying agent tube is provided with a connecting pipe for connecting to the valve of the drying agent tank.

[0009] A hose is mounted on the feeding assembly at its rear end and extends in the front-to-back direction. The hose is sleeved on the front part of the drying agent tube and cooperates with the drying agent tube to form a flow channel. The inflow pipe is connected to the flow channel. The front end of the hose is provided with a gun head. The drying agent tube passes through the gun head and forms an output channel between the gun head and the gun head. An opening and closing structure is provided between the gun head and the drying agent tube to adjust whether the flow channel and the output channel are connected.

[0010] A wrench, hinged to the gun body, is used to push the desiccant tube backward.

[0011] A return spring is disposed in the main base and sleeved on the desiccant tube, for cooperating to reset the desiccant tube forward.

[0012] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0013] Preferably, the wrench has a released state and a pressed state. In the released state, the valve of the drying agent can is closed, and the opening and closing structure is closed. In the pressed state, the wrench drives the drying agent tube to move backward relative to the rubber tube, the connecting tube is squeezed backward and opens the valve of the drying agent can, and the drying agent enters the flow channel in the drying agent tube. The opening and closing structure is opened, and the foaming adhesive located in the guide channel enters the output channel.

[0014] Preferably, the drying agent container is placed horizontally and extends in the front-to-back direction.

[0015] Preferably, an adjusting component is installed at the rear end of the desiccant tube. The adjusting component includes an adjusting knob and a screw connected to each other. The rear end of the main base is provided with a screw hole for mounting the screw. The rear end of the return spring abuts against the screw.

[0016] Preferably, the outer wall of the drying agent tube is provided with a first step and a second step from back to front, the wrench abuts on the first step, and the front end of the reset spring abuts on the second step.

[0017] Preferably, the first feeding assembly is provided with a clearance port, and the adjustment knob is arranged on one side of the clearance port.

[0018] Preferably, the opening and closing structure includes a wedge-shaped surface disposed on the outer wall of the desiccant tube and a guide slope disposed at the rear end of the gun barrel head. A closing point is formed between the front end of the guide slope and the rear end of the output channel. In the released state, the closing point abuts against the wedge-shaped surface and isolates the flow channel and the output channel. In the pressed state, the closing point leaves the wedge-shaped surface, and the flow channel and the output channel are connected.

[0019] Preferably, the second feeding assembly further includes a sleeve through which the drying agent tube passes, the sleeve being arranged in front of the main base, the inflow pipe being disposed between the second mounting port and the sleeve, and the rear end of the hose extending into and being fixed inside the sleeve.

[0020] Preferably, the gun holder body further includes a connector disposed between the main base and the second feeding assembly, and the wrench is hingedly mounted on the connector.

[0021] More preferably, a handle is fixedly provided below the main base, and when pressed, the drying agent sprayed from the front end of the flow channel and the foaming adhesive sprayed from the front end of the output channel are mixed outside the glue gun.

[0022] Compared with the prior art, this utility model has the following beneficial effects:

[0023] 1. By placing the drying agent canister at the rear of the gun holder body, the weight on top of the gun holder body can be reduced, and the center of gravity of the glue gun can be balanced relatively backward. After the foam glue canister is installed on top of the gun holder body, the user can easily grasp the handle and press the trigger to spray glue, which will save more effort and make it easier for the user to operate with one hand.

[0024] 2. Positioning the drying agent canister at the rear of the gun holder body allows the drying agent in the canister to flow more smoothly into the drying agent tube at a faster flow rate, ensuring that the user can quickly mix the foam adhesive and the drying agent and spray the adhesive when pressing the trigger.

[0025] 3. It is more convenient to use. Pressing the wrench will dispense the glue. Since the foaming glue and drying agent react outside the glue gun, the reactants will not remain in the gun head and will not cause blockage. Therefore, the gun head located at the front end of the glue tube does not need to be replaced frequently, resulting in low operating costs.

[0026] 4. Since the glue tube is attached to the front of the outside of the drying agent tube, it is essentially a single-tube structure, which is more compact and stable, making the assembly of the glue gun easier. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is an overall left view of an embodiment of the present application showing the installation of a foaming adhesive can and a drying agent can;

[0029] Figure 2 This is an overall axial view of the structure after the extension tube is taken out forward in one embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the structure of the gun mount body in one embodiment of this application;

[0031] Figure 4 This is an overall cross-sectional view of the glue gun with the wrench in the loosened state in one embodiment of this application;

[0032] Figure 5 for Figure 4 Enlarged view of part A in the image;

[0033] Figure 6 for Figure 4 Enlarged view of part B in the image;

[0034] Figure 7 This is an overall cross-sectional view of the glue gun with the wrench in a pressed state according to one embodiment of this application;

[0035] Figure 8 for Figure 7 Enlarged view of part C in the image;

[0036] Figure 9 This is an overall axonometric view of an embodiment of the present application showing the installation of a foaming adhesive tank and a drying agent tank;

[0037] Figure 10 for Figure 9 Enlarged view of part D in the image;

[0038] Figure 11 This is an assembly structure diagram of the drying agent tube, the reset spring, and the adjusting member in one embodiment of this application.

[0039] The attached diagram is labeled as follows: a-expanding foam can, b-drying agent can, 100-gun holder body, 110-main base, 111-screw hole, 120-first feeding assembly, 121-first mounting port, 122-clearance port, 130-second feeding assembly, 131-second mounting port, 132-inflow pipe, 133-sleeve connector, 140-handle, 141-protrusion, 150-connector, 200-drying agent tube, 210 - Flowing pipe, 220-First step, 230-Second step, 240-Wedge surface, 250-Connecting pipe, 300-Wrench, 400-Reset spring, 500-Hose, 510-Guide channel, 520-Gun head, 521-Guide slope, 522-Sealing point, 530-Output channel, 600-Adjusting component, 610-Adjusting knob, 611-Anti-slip texture, 620-Screw, 700-Extension pipe.

[0040] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0043] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0044] Detailed implementation plan: See below Figures 1-11 This utility model is a convenient two-component glue gun, comprising:

[0045] The gun holder body 100 includes, from back to front, a first feeding assembly 120, a main base 110, and a second feeding assembly 130. The first feeding assembly 120 is provided with a first mounting port 121 for mounting the drying agent can b. The second feeding assembly 130 is provided with a second mounting port 131 for mounting the foaming adhesive can a, and an inflow pipe 132 for the foaming adhesive to flow in.

[0046] A drying agent tube 200 is installed on the gun holder body 100 and passes through the main base 110 and the second feed assembly 130. The drying agent tube 200 extends in the front-rear direction, and the rear end of the drying agent tube 200 is provided with a connecting pipe 250 for cooperating with the valve connected to the drying agent tank b.

[0047] The hose 500 is mounted on the feeding assembly at its rear end and extends in the front-to-back direction. The hose 500 is sleeved on the front of the dryer tube 200 and together with the dryer tube 200 forms a guide channel 510. The inflow pipe 132 is connected to the guide channel 510. The front end of the hose 500 is provided with a gun head 520. The dryer tube 200 passes through the gun head 520 and forms an output channel 530 between the gun head 520 and the gun head 520. An opening and closing structure is provided between the gun head 520 and the dryer tube 200 to adjust whether the guide channel 510 and the output channel 530 are connected.

[0048] Wrench 300 is hinged to gun body 100 and is used to push dryer tube 200 backward.

[0049] A return spring 400 is disposed in the main base 110 and sleeved on the dryer tube 200 to cooperate in resetting the dryer tube 200 forward.

[0050] In a preferred embodiment of this invention, the wrench 300 has a loosened state and a pressed state. In the loosened state, the valve of the drying agent tank b is closed, and the opening and closing structure is closed. In the pressed state, the wrench 300 drives the drying agent tube 200 to move backward relative to the rubber tube 500, the connecting tube 250 is squeezed backward and opens the valve of the drying agent tank b, and the drying agent enters the flow channel 210 in the drying agent tube 200. The opening and closing structure is opened, and the foaming adhesive located in the guide channel 510 enters the output channel 530.

[0051] To facilitate understanding, the dispensing principle of the drying agent tank b will be explained below:

[0052] After the wrench 300 is pressed, the wrench 300 is in the pressed state. At this time, the wrench 300 will drive the drying agent tube 200 to move backward relative to the hose 500. The connecting tube 250 located at the rear end of the drying agent tube 200 will be squeezed backward and open the valve of the drying agent tank b. The drying agent in the drying agent tank b will flow into the drying agent tube 200.

[0053] In this embodiment, the drying agent canister b is placed at the rear end of the gun holder body 100. On the one hand, this can reduce the weight on top of the gun holder body 100, and on the other hand, it can balance the center of gravity of the glue gun relatively backward. When the foaming glue canister a is installed on top of the gun holder body 100, the user can easily grasp the handle 140 and press the trigger to perform glue spraying operations, which will save more effort and make it easier for the user to perform one-handed operations.

[0054] Next, please refer to Figure 1 and Figure 9 As can be seen, in this embodiment, the drying agent container b is placed horizontally and extends in the front-to-back direction.

[0055] Here, the drying agent canister b is positioned at the rear end of the gun holder body 100, and is placed horizontally. After pressing the trigger, the drying agent in the drying agent canister b flows more smoothly into the drying agent tube 200, and the flow rate is also faster. This ensures that the user can quickly mix the foam adhesive and the drying agent and spray the adhesive when pressing the trigger.

[0056] Then, please see Figure 4 , Figure 6 , Figure 7 and Figure 8As can be seen, in this embodiment, the opening and closing structure includes a wedge-shaped surface 240 disposed on the outer wall of the desiccant tube 200, and a guide slope 521 disposed at the rear end of the gun barrel head 520. A closing point 522 is formed between the front end of the guide slope 521 and the rear end of the output channel 530. In the released state, the closing point 522 abuts against the wedge-shaped surface 240 and isolates the flow channel 510 and the output channel 530. In the pressed state, the closing point 522 leaves the wedge-shaped surface 240, and the flow channel 510 and the output channel 530 are connected.

[0057] Working principle of opening and closing structure: see Figure 4 and Figure 6 As can be seen, the extending direction of the guide ramp 521 and the extending direction of the output channel 530 form an angle with each other, forming a closure point 522 at the bend. In the released state, this closure point 522 abuts against the wedge-shaped surface 240, thereby separating the flow channel 510 and the output channel 530. (See reference...) Figure 7 and Figure 8 When the desiccant tube 200 moves backward, the wedge surface 240 also moves backward. Since the position of the gun head 520 remains unchanged, the closing point 522 leaves the wedge surface 240, and the flow channel 510 and the output channel 530 are connected. The desiccant located in the flow channel 510 will enter the output channel 530.

[0058] Next, please refer to Figure 2 and Figure 3 As can be seen, in this embodiment, the second feeding assembly 130 also includes a sleeve 133 through which the dryer tube 200 passes. The sleeve 133 is arranged in front of the main base 110, and the inflow pipe 132 is arranged between the second mounting port 131 and the sleeve 133. The rear end of the rubber tube 500 extends into and is fixed inside the sleeve 133.

[0059] Note that in this embodiment, the rear end of the sleeve 133 is provided with a plug. The plug is provided to prevent the foam adhesive flowing into the hose 500 from flowing out from the sleeve 133.

[0060] In addition, please see Figure 1 and Figure 2 As can be seen, in this embodiment, the gun holder body 100 also includes a connector 150 disposed between the main base 110 and the second feeding assembly 130, and the wrench 300 is hingedly mounted on the connector 150.

[0061] In this embodiment, the gun base body 100 is a one-piece molded design. The main base 110, the first feeding component 120, the handle 140, the connector 150, and the second feeding component 130 do not need to be assembled separately, making the structure more stable.

[0062] Please see Figure 4 , Figure 5 and Figure 11 As can be seen, in this embodiment, an adjusting member 600 is installed at the rear end of the drying agent tube 200. The adjusting member 600 includes an adjusting knob 610 and a screw 620 connected to each other. The rear end of the main base 110 is provided with a screw hole 111 for mounting the screw 620. The rear end of the return spring 400 abuts against the screw 620.

[0063] Furthermore, in this embodiment, the first feeding assembly 120 is provided with a relief port 122, and the adjustment knob 610 is correspondingly arranged on one side of the relief port 122.

[0064] In addition, please see Figure 11 As can be seen, the outer wall of the drying agent tube 200 is provided with a first step 220 and a second step 230 from back to front. The wrench 300 abuts against the first step 220, and the front end of the return spring 400 abuts against the second step 230.

[0065] When the wrench 300 is pulled backward by hand, it rotates clockwise around the hinge point on the connector 150 and presses backward against the first step 220 on the desiccant tube 200, thereby driving the desiccant tube 200 to move backward and compressing the return spring 400. After the wrench 300 is released, the return spring 400 returns to its original shape, which can help to complete the forward reset of the desiccant tube 200.

[0066] Note that in this embodiment, the elasticity of the return spring 400 can be adjusted by the adjusting member 600, thus adapting to different finger strengths and providing a better user experience. When the elasticity of the return spring 400 needs to be increased, the user can move the adjusting knob 610 at the clearance port 122, causing the screw 620 to continue to screw forward into the screw hole 111, thereby shortening the length of the return spring 400; when the elasticity of the return spring 400 needs to be decreased, the user can move the adjusting knob 610 at the clearance port 122, causing the screw 620 to screw backward out of the screw hole 111, thereby lengthening the length of the return spring 400. The operation is very convenient.

[0067] Please see Figure 9 and Figure 10 In this embodiment, the outer wall of the adjustment knob 610 is provided with anti-slip texture 611. The anti-slip texture 611 can help to turn the adjustment knob 610 more smoothly.

[0068] More specifically, a handle 140 is fixedly provided below the main base 110. When pressed, the drying agent sprayed from the front end of the self-flowing pipe 210 and the foaming adhesive sprayed from the front end of the output channel 530 are mixed on the outside of the glue gun.

[0069] Please see Figure 4As can be seen, in this embodiment, the front end of the handle 140 is provided with at least one protrusion 141. The protrusion 141 is designed to provide a place for the fingers, which makes it easier to press the wrench 300.

[0070] Note that in this embodiment, the internal pressure of the expanding foam in the gap and the drying agent in the flow channel 510 is very high. When the wrench 300 is in the pressing state, the drying agent in the gap will be instantly impacted into the flow pipe 210, and the expanding foam in the flow channel 510 will be instantly impacted into the output channel 530. Then, it will be sprayed out from the front of the gun head 520 with almost no distinction between front and back. When the expanding foam and the drying agent are sprayed forward at the same time, they will undergo a chemical reaction on the outside of the glue gun, which will allow the expanding foam to cure quickly within one minute.

[0071] Please see Figure 2 and Figure 9 As can be seen in this embodiment, an extension tube 700 is detachably installed at the front end of the gun head 520. The front end of the drying agent tube 200 is located in the extension tube 700. When the foaming adhesive and the drying agent are sprayed forward at the same time, they will first enter the extension tube 700 and then be sprayed out from the front end of the extension tube 700. The extension tube 700 allows the foaming adhesive mixed with the drying agent to be sprayed out more evenly. The extension tube 700 can be replaced at any time.

[0072] The above description of a convenient two-component glue gun of this utility model is only a preferred embodiment of this utility model and does not limit the patent scope of this utility model. All equivalent structural transformations made under the inventive concept of this utility model using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A two-component glue gun for easy use, characterized in that, include: The gun holder body includes, from back to front, a first feeding assembly, a main base and a second feeding assembly. The first feeding assembly is provided with a first mounting port for mounting a drying agent canister. The second feeding assembly is provided with a second mounting port for mounting a foaming adhesive canister and an inflow pipe for the foaming adhesive to flow in. A drying agent tube is installed on the gun holder body and passes through the main base and the second feeding assembly. The drying agent tube extends in the front-to-back direction, and the rear end of the drying agent tube is provided with a connecting pipe for connecting to the valve of the drying agent tank. A hose is mounted on the feeding assembly at its rear end and extends in the front-to-back direction. The hose is sleeved on the front part of the drying agent tube and cooperates with the drying agent tube to form a flow channel. The inflow pipe is connected to the flow channel. The front end of the hose is provided with a gun head. The drying agent tube passes through the gun head and forms an output channel between the gun head and the gun head. An opening and closing structure is provided between the gun head and the drying agent tube to adjust whether the flow channel and the output channel are connected. A wrench, hinged to the gun body, is used to push the desiccant tube backward. A return spring is disposed in the main base and sleeved on the desiccant tube, for cooperating to reset the desiccant tube forward.

2. The dual component glue gun of claim 1, wherein, The wrench has a loosened state and a pressed state. In the loosened state, the valve of the drying agent can is closed, and the opening and closing structure is closed. In the pressed state, the wrench drives the drying agent tube to move backward relative to the rubber tube, the connecting tube is squeezed backward and opens the valve of the drying agent can, and the drying agent enters the flow channel in the drying agent tube. The opening and closing structure is opened, and the foaming adhesive located in the guide channel enters the output channel.

3. The dual component glue gun of claim 2, wherein, The drying agent container is placed horizontally and extends in the front-to-back direction.

4. The dual component glue gun of claim 3, wherein, An adjusting component is installed at the rear end of the desiccant tube. The adjusting component includes an adjusting knob and a screw connected to each other. The rear end of the main base is provided with a screw hole for mounting the screw. The rear end of the return spring abuts against the screw.

5. The convenient-to-use dual-component glue gun according to claim 4, wherein, The outer wall of the desiccant tube is provided with a first step and a second step from back to front. The wrench abuts against the first step, and the front end of the reset spring abuts against the second step.

6. The dual component glue gun of claim 4, wherein, The first feeding assembly is provided with a clearance port, and the adjustment knob is arranged on one side of the clearance port.

7. A ready-to-use dual component glue gun according to any one of claims 2 to 6, wherein, The opening and closing structure includes a wedge-shaped surface disposed on the outer wall of the desiccant tube and a guide slope disposed at the rear end of the gun barrel head. A closing point is formed between the front end of the guide slope and the rear end of the output channel. In the released state, the closing point abuts against the wedge-shaped surface and isolates the flow channel and the output channel. In the pressed state, the closing point leaves the wedge-shaped surface, and the flow channel and the output channel are connected.

8. The convenient-to-use dual-component glue gun according to claim 7, wherein, The second feeding assembly also includes a sleeve through which the drying agent tube passes, the sleeve being arranged in front of the main base, the inflow pipe being disposed between the second mounting port and the sleeve, and the rear end of the hose extending into and being fixed inside the sleeve.

9. The convenient-to-use dual-component glue gun according to claim 8, wherein, The gun seat body further comprises a connecting piece arranged between the main base and the second feeding assembly, and the wrench is hingedly arranged on the connecting piece.

10. The dual component glue gun of claim 2, wherein, A handle is fixed below the main base, and the dry agent sprayed from the front end of the flow pipeline and the foaming agent sprayed from the front end of the output channel are mixed outside the glue gun in the pressing state.

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