Double-end glue gun

Abstract

The utility model relates to a double-head glue gun which comprises a glue gun body, a first glue inlet and a second glue inlet are formed in the two sides of the glue gun body respectively, and a first flow channel and a second flow channel which extend in the vertical direction are formed in the glue gun body; the first runner is close to one side of the first glue inlet and is communicated with the first glue inlet; the second runner is close to one side of the second glue inlet and is communicated with the second glue inlet; a converging block and a mixing pipe are arranged at the lower end of the glue gun main body, the lower ends of the first flow channel and the second flow channel are both communicated with one end of the converging block, and a converging cavity is formed in the converging block and used for converging glue flowing out of the first flow channel and the second flow channel; the other end of the converging block communicates with the glue inlet end of the mixing pipe, and the end, away from the converging block, of the mixing pipe is a glue outlet end; a spiral mixing rod is arranged in the mixing pipe and is used for mixing the colloid flowing in from the converging block. According to the invention, the spiral mixing rod is arranged in the mixing pipe, so that two colloids can be more uniformly mixed within a short time.

Description

Technical Field

[0001] This disclosure relates to the field of glue supply technology, specifically to a dual-head glue gun. Background Technology

[0002] AB glue, a two-component curing adhesive, consists of a base glue and a hardener. It only cures after the two components are mixed and does not require temperature or UV curing. This unique curing mechanism necessitates ensuring uniform mixing of the two components during the mixing process to achieve optimal adhesion. However, the mixing process often presents challenges, especially the uneven mixing caused by manual mixing, which severely affects the tackiness of the AB glue.

[0003] A search reveals that existing technologies, such as patent CN202211299676.6, disclose a novel mixing glue gun, comprising a support and a gun body slidably connected to the support, with an electromagnetic valve disposed between the support and the gun body. The gun body includes a cylinder connected vertically and a front end cover. A double-rod piston is movably disposed within the cylinder, and two firing pins are fixed on the double-rod piston. The front end cover has a glue cavity positioned opposite the firing pins, with the central axis of the firing pins pointing towards the center of the glue outlet of the glue cavity. A mixing tube is disposed on the side of the front end cover away from the cylinder. The mixing tube has a first mixing cavity and a second mixing cavity respectively disposed along the glue outlet direction. The first mixing cavity contains a mixing cylinder that is electromagnetically controlled to oscillate and can rotate on its own. The second mixing cavity has multiple stirring sections arranged in a line along the glue outlet direction. However, the aforementioned novel mixing glue gun still has the following drawbacks in practical applications:

[0004] Two adhesives are mixed sequentially through a first mixing chamber and a second mixing chamber within a mixing tube. The first mixing chamber contains a mixing cylinder that is electromagnetically controlled to oscillate and rotate on its own. The second mixing chamber has multiple stirring sections arranged in a straight line along the dispensing direction. The electromagnetic control process in the first mixing chamber may consume a large amount of electrical energy, increasing energy costs and environmental burden. Furthermore, the electromagnetic control technology may be affected by friction and vibration of mechanical components, leading to limited control accuracy, which in turn affects the oscillation and rotation accuracy of the mixing cylinder, ultimately impacting the mixing effect. The number, shape, size, and arrangement of the stirring sections in the second mixing chamber can directly affect the mixing effect. An unreasonable stirring section design can lead to uneven mixing or dead zones. The presence of multiple stirring sections increases the flow resistance of the adhesive within the mixing chamber, causing poor adhesive flow or the generation of eddies, thus affecting the mixing effect. Moreover, when the properties of the adhesive change, the mixing cylinder and stirring sections need to be replaced or adjusted to adapt to the new mixing requirements, lacking flexibility. Utility Model Content

[0005] To address the problems existing in the prior art, the present disclosure aims to provide a dual-head glue gun. The dual-head glue gun mixes two colloids by incorporating a spiral mixing rod in the mixing tube. The spiral mixing rod enables the two colloids to undergo complex convection, shearing, and diffusion movements within the mixing tube. This movement helps the two colloids achieve a more uniform mixture in a short time. Furthermore, the dual-head glue gun has two independent glue inlets and flow channels, allowing for the simultaneous delivery and mixing of two colloids, significantly improving work efficiency.

[0006] The dual-head glue gun disclosed herein includes:

[0007] The glue gun body has a first glue inlet and a second glue inlet on both sides, and the glue gun body has two vertically extending first and second flow channels inside.

[0008] The first flow channel is located on the side near the first glue inlet and is connected to the first glue inlet;

[0009] The second flow channel is located on the side near the second glue inlet and is connected to the second glue inlet;

[0010] The lower end of the glue gun body has a confluence block and a mixing tube. The lower ends of the first flow channel and the second flow channel are both connected to one end of the confluence block. The confluence block has a confluence cavity inside, which is used to merge the glue flowing out of the first flow channel and the second flow channel respectively.

[0011] The other end of the confluence block is connected to the glue inlet end of the mixing tube, and the end of the mixing tube away from the confluence block is the glue outlet end;

[0012] The mixing tube is equipped with a spiral mixing rod inside, which is used to mix the colloid flowing in from the confluence block.

[0013] Preferably, the upper ends of the first flow channel and the second flow channel are respectively provided with a first control component and a second control component;

[0014] The first control component includes a first control valve and a first adjusting screw. The first adjusting screw passes through the first flow channel. One end of the first adjusting screw is located at the connection between the first flow channel and the confluence block. The cross-sectional area of ​​the end of the first adjusting screw located at the connection between the first flow channel and the confluence block is larger than the cross-sectional area of ​​the first flow channel.

[0015] The second control component includes a second control valve and a second adjusting screw. The second adjusting screw passes through the second flow channel, and one end of the second adjusting screw is located at the connection between the second flow channel and the confluence block. The cross-sectional area of ​​the end of the second adjusting screw located at the connection between the second flow channel and the confluence block is larger than the cross-sectional area of ​​the second flow channel.

[0016] Preferably, a first adjustment knob is provided at the end of the first adjusting screw away from the confluence block. By adjusting the first adjustment knob, the first adjusting screw can move vertically along the first flow channel.

[0017] The second adjusting screw has a second adjusting knob at the end away from the confluence block. By adjusting the second adjusting knob, the second adjusting screw can move vertically along the second flow channel.

[0018] Preferably, the length ratio of the mixing tube to the length of the spiral mixing rod is 5:4.

[0019] Preferably, the first glue inlet and the second glue inlet are symmetrical in the vertical direction.

[0020] Preferably, sealing rings are provided at the connection points of the first flow channel and the confluence block, the connection points of the second flow channel and the confluence block, and the connection points of the confluence block and the glue inlet end of the mixing tube.

[0021] The advantages of the dual-head glue gun disclosed herein are as follows:

[0022] This disclosure discloses a dual-head glue gun comprising: a glue gun body, with a first glue inlet and a second glue inlet on each side of the glue gun body; the glue gun body has two vertically extending channels, a first channel and a second channel; the first channel is located near the first glue inlet and communicates with it; the second channel is located near the second glue inlet and communicates with it; the lower end of the glue gun body has a confluence block and a mixing tube; the lower ends of both the first and second channels are connected to one end of the confluence block; the confluence block has a confluence cavity for confluencing the glue flowing out of the first and second channels respectively; the other end of the confluence block is connected to the glue inlet end of the mixing tube; the end of the mixing tube away from the confluence block is the glue outlet end; the mixing tube has a spiral mixing rod inside for mixing the glue flowing in from the confluence block. By incorporating a spiral mixing rod within the mixing tube to mix two colloids, the spiral rod enables complex convection, shearing, and diffusion movements within the tube. This dynamic motion facilitates a more uniform mixing of the two colloids in a shorter time. Compared to mixing with a stirring section, the spiral mixing rod can accommodate colloids of different particle sizes, densities, and viscosities. By adjusting the parameters of the spiral mixing rod (such as pitch and helix angle), different mixing requirements can be met, making the dual-head glue gun more versatile. The spiral mixing rod is also easy to disassemble and clean. Furthermore, the dual-head glue gun has two independent inlets and flow channels, allowing for the simultaneous delivery and mixing of two colloids, significantly improving work efficiency. The spiral mixing rod inside the mixing tube efficiently mixes the two colloids, ensuring that the colloids are fully homogeneous before dispensing, reducing rework and time waste caused by uneven mixing. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of a dual-head glue gun as described in this disclosure;

[0024] Figure 2 This is a front view of the spiral mixing rod of a dual-head glue gun as described in this disclosure.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10 - First inlet;

[0027] 20 - Second inlet;

[0028] 30 - confluence block; 301 - confluence cavity;

[0029] 40-Mixing tube;

[0030] 50-Helical Mixing Rod;

[0031] 60-First control component; 601-First control valve; 602-First adjusting screw;

[0032] 70 - Second control component; 701 - Second control valve; 702 - Second adjusting screw. Detailed Implementation

[0033] like Figure 1 - Figure 2 As shown, the dual-head glue gun of this disclosure includes:

[0034] The glue gun body has a first glue inlet 10 and a second glue inlet 20 on both sides. The glue gun body has two vertically extending first and second flow channels inside. The first glue inlet 10 is used for the flow of glue A, and the second glue inlet 20 is used for the flow of glue B.

[0035] The first flow channel is located on the side of the first glue inlet 10 and is connected to the first glue inlet 10; the connection between the first glue inlet 10 and the first flow channel allows the colloid in the first glue inlet 10 to flow into the first flow channel.

[0036] The second flow channel is located on the side of the second glue inlet 20 and is connected to the second glue inlet 20; the connection between the second glue inlet 20 and the second flow channel allows the colloid in the second glue inlet 20 to flow into the second flow channel.

[0037] The lower end of the glue gun body has a confluence block 30 and a mixing tube 40. The lower ends of the first flow channel and the second flow channel are both connected to one end of the confluence block 30. The confluence block 30 has a confluence cavity 301 inside, which is used to merge the glue flowing out of the first flow channel and the second flow channel respectively. That is, the lower end of the first flow channel and the lower end of the second flow channel are both connected to the confluence cavity 301. Glue A flowing into the first flow channel through the first glue inlet 10 flows into the confluence cavity 301, and glue B flowing into the second flow channel through the second glue inlet 20 flows into the confluence cavity 301, so that glue A and glue B merge.

[0038] The other end of the confluence block 30 is connected to the glue inlet end of the mixing tube 40, and the end of the mixing tube 40 away from the confluence block 30 is the glue outlet end;

[0039] The mixing tube 40 is equipped with a spiral mixing rod 50 for mixing the colloid flowing in from the confluence block 30. The A-colloid and B-colloid that are confluenced in the confluence cavity 301 of the confluence block 30 flow into the mixing tube 40 and are then mixed by the spiral mixing rod 50. Different spiral mixing rods with different pitches and helix angles can be selected according to the actual application. It is only necessary to remove the spiral mixing rod 50 from the mixing tube 40 and replace it with the required spiral mixing rod 50.

[0040] Two colloids are mixed by setting a spiral mixing rod 50 in the mixing tube 40. The spiral mixing rod 50 enables the two colloids to form complex convection, shearing and diffusion motions within the mixing tube 40. This motion helps the two colloids to be mixed more uniformly in a short time. Compared with the method of stirring and mixing with a stirring section, the spiral mixing rod 50 can adapt to the mixing of colloids with different particle sizes, densities and viscosities. By adjusting the parameters of the spiral mixing rod 50 (such as pitch, helix angle, etc.), different mixing requirements can be met, making the double-headed glue gun more widely applicable. The spiral mixing rod is also easy to disassemble and clean.

[0041] Furthermore, in this embodiment, the upper ends of the first flow channel and the second flow channel are respectively provided with a first control component 60 and a second control component;

[0042] The first control component 60 includes a first control valve 601 and a first adjusting screw 602. The first adjusting screw 602 passes through the first flow channel, and one end of the first adjusting screw 602 is located at the connection between the first flow channel and the confluence block 30. The cross-sectional area of ​​the end of the first adjusting screw 602 at the connection between the first flow channel and the confluence block 30 is larger than the cross-sectional area of ​​the first flow channel. That is, the end of the first adjusting screw 602 at the connection between the first flow channel and the confluence block 30 can prevent the colloid from flowing into the confluence cavity 301 from the first flow channel.

[0043] The first control valve 601 is connected to the first glue inlet 10 and is used to control the opening and closing of the first glue inlet 10. When the first control valve 601 is open, the glue in the first glue inlet 10 flows into the first flow channel. When the first control valve 601 is closed, the glue in the first glue inlet 10 cannot flow into the first flow channel.

[0044] The second control component 70 includes a second control valve 701 and a second adjusting screw 702. The second adjusting screw 702 passes through the second flow channel, and one end of the second adjusting screw 702 is located at the connection between the second flow channel and the confluence block 30. The cross-sectional area of ​​the end of the second adjusting screw 702 at the connection between the second flow channel and the confluence block 30 is larger than the cross-sectional area of ​​the second flow channel. That is, the end of the second adjusting screw 702 at the connection between the second flow channel and the confluence block 30 can prevent the colloid from flowing into the confluence cavity 301 from the second flow channel.

[0045] The second control valve 701 is connected to the second glue inlet 20 and is used to control the opening and closing of the second glue inlet 20. When the second control valve 701 is open, the glue in the second glue inlet 20 flows into the first flow channel. When the second control valve 701 is closed, the glue in the second glue inlet 20 cannot flow into the first flow channel.

[0046] The first control valve 601 and the second control valve 701 can be pneumatic control valves. Pneumatic control valves control the flow of adhesive through air pressure, and have the advantages of fast response and high control accuracy. At the same time, pneumatic control valves usually have high durability and stability, which enables precise control of the flow of adhesive into the first inlet 10 and the opening and closing of the second inlet 20. In order to improve the degree of automation, the first control valve 601 and the second control valve 701 can be electric control valves. Electric control valves also have the advantage of precise control. The specific choice should be based on the actual situation.

[0047] Furthermore, in this embodiment, a first adjusting knob is provided at the end of the first adjusting screw 602 away from the confluence block 30. By adjusting the first adjusting knob, the first adjusting screw 602 moves vertically along the first flow channel. By adjusting the first adjusting knob, the first adjusting screw 602 moves closer to the confluence cavity, so that the end of the first adjusting screw 602 forms a certain gap with the lower end of the flow channel of the first flow channel, thereby allowing the colloid to flow into the confluence cavity 301. The first adjusting knob can adjust the size of the gap formed between the end of the first adjusting screw 602 and the lower end of the flow channel of the first flow channel, thereby controlling the amount of colloid flowing into the confluence cavity 301.

[0048] The second adjusting screw 702 is provided with a second adjusting knob at the end away from the confluence block 30. By adjusting the second adjusting knob, the second adjusting screw 702 moves vertically along the second flow channel. By adjusting the second adjusting knob, the second adjusting screw 702 moves closer to the confluence cavity, so that the end of the second adjusting screw 702 forms a certain gap with the lower end of the flow channel of the second flow channel, thereby allowing the B glue to flow into the confluence cavity 301. The second adjusting knob can adjust the size of the gap formed between the end of the second adjusting screw 702 and the lower end of the flow channel of the second flow channel, thereby controlling the amount of glue flowing into the confluence cavity 301.

[0049] Furthermore, in this embodiment, the length ratio of the mixing tube 40 to the spiral mixing rod 50 is 5:4. This length ratio allows the colloid to have a longer flow path within the mixing tube, which helps the colloid to mix more thoroughly. Choosing equal-length mixing tubes 40 and spiral mixing rods 50 may create mixing dead zones in certain areas, affecting the mixing effect. Therefore, the non-equal-length design of the mixing tube 40 and spiral mixing rod 50 helps to reduce dead zones during the mixing process, allowing the fluid to be fully mixed in every corner. If the length ratio of the mixing tube 40 to the spiral mixing rod 50 is chosen to be 5:3, a high degree of uniform mixing cannot be achieved, and uneven mixing is likely to occur. Therefore, a length ratio of 5:4 for the mixing tube 40 to the spiral mixing rod 50 can make the colloid mix uniformly and achieve a better mixing effect.

[0050] Furthermore, in this embodiment, the first glue inlet 10 and the second glue inlet 20 are symmetrical in the vertical direction.

[0051] Furthermore, in this embodiment, sealing rings are provided at the connection points between the first flow channel and the confluence block 30, the connection points between the second flow channel and the confluence block 30, and the connection points between the confluence block 30 and the glue inlet end of the mixing tube 40. The sealing rings can be rubber sealing rings or polyurethane sealing rings. Rubber sealing rings have good elasticity and sealing performance, and can adapt to various working environments. When applied to a glue gun, they can effectively prevent leakage of glue or other media, ensuring accurate and stable dispensing. Polyurethane sealing rings have high wear resistance and oil resistance, as well as good elasticity and sealing performance, which can meet higher sealing requirements, effectively extend the service life of the glue gun, and improve dispensing efficiency.

[0052] The following will, in conjunction with the above content, fully describe the working process of a dual-head glue gun according to this embodiment.

[0053] A glue is injected into the first inlet 10 of the glue gun body, and B glue is injected into the second inlet 20. By opening the first control valve 601, A glue flows into the first flow channel from the first inlet 10. By opening the second control valve 701, B glue flows into the second flow channel from the second inlet 20. At this time, the end of the first adjusting screw 602 located at the connection between the first flow channel and the confluence block 30 restricts A glue from flowing into the confluence cavity 301 from the first flow channel. The end of the second adjusting screw 702 located at the connection between the second flow channel and the confluence block 30 restricts B glue from flowing into the confluence cavity 301 from the second flow channel.

[0054] Adjusting the first adjustment knob causes the first adjustment screw 602 to move vertically along the first flow channel. Therefore, by adjusting the first adjustment knob, the first adjustment screw 602 moves closer to the confluence cavity, creating a gap between the end of the first adjustment screw 602 and the lower opening of the first flow channel, allowing adhesive A to flow into the confluence cavity 301. Adjusting the second adjustment knob causes the second adjustment screw 702 to move vertically along the second flow channel. Therefore, by adjusting the second adjustment knob, the second adjustment screw 702 moves closer to the confluence cavity, creating a gap between the end of the second adjustment screw 702 and the lower opening of the second flow channel, allowing adhesive B to flow into the confluence cavity 301, thus completing the confluence of adhesive A and adhesive B.

[0055] After A and B are combined, they flow into the mixing tube 40 and then pass through the spiral mixing rod 50 to mix A and B. The spiral mixing rod 50 enables A and B to form complex convection, shearing and diffusion motions in the mixing tube. This motion allows A and B to be mixed more evenly in a short time. After mixing, they flow out through the outlet end of the mixing tube 40.

[0056] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this disclosure.

[0057] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims disclosed herein.

Claims

1. A double-headed glue gun, characterized in that, include: The glue gun body has a first glue inlet (10) and a second glue inlet (20) on both sides, and the glue gun body has two vertically extending first and second flow channels inside. The first flow channel is located on the side close to the first glue inlet (10) and is connected to the first glue inlet (10); The second flow channel is located on the side near the second glue inlet (20) and is connected to the second glue inlet (20); The lower end of the glue gun body has a converging block (30) and a mixing tube (40). The lower ends of the first flow channel and the second flow channel are connected to one end of the converging block (30). The converging block (30) has a converging cavity (301) inside, which is used to merge the glue flowing out of the first flow channel and the second flow channel respectively. The other end of the confluence block (30) is connected to the glue inlet end of the mixing tube (40), and the end of the mixing tube (40) away from the confluence block (30) is the glue outlet end; The mixing tube (40) is provided with a spiral mixing rod (50) inside for mixing the colloid flowing in from the confluence block (30).

2. The double-headed glue gun according to claim 1, characterized in that, The upper ends of the first flow channel and the second flow channel are respectively provided with a first control component (60) and a second control component; The first control component (60) includes a first control valve (601) and a first adjusting screw (602). The first adjusting screw (602) passes through the first flow channel. One end of the first adjusting screw (602) is located at the connection between the first flow channel and the confluence block (30). The cross-sectional area of ​​the end of the first adjusting screw (602) located at the connection between the first flow channel and the confluence block (30) is greater than the cross-sectional area of ​​the first flow channel. The second control component (70) includes a second control valve (701) and a second adjusting screw (702). The second adjusting screw (702) passes through the second flow channel. One end of the second adjusting screw (702) is located at the connection between the second flow channel and the confluence block (30). The cross-sectional area of ​​the end of the second adjusting screw (702) at the connection between the second flow channel and the confluence block (30) is greater than the cross-sectional area of ​​the second flow channel.

3. The double-headed glue gun according to claim 2, characterized in that, The first adjusting screw (602) is provided with a first adjusting knob at the end away from the confluence block (30). By adjusting the first adjusting knob, the first adjusting screw (602) moves vertically along the first flow channel. The second adjusting screw (702) is provided with a second adjusting knob at one end away from the confluence block (30). By adjusting the second adjusting knob, the second adjusting screw (702) moves vertically along the second flow channel.

4. The double-headed glue gun according to claim 1, characterized in that, The length ratio of the mixing tube (40) to the length of the spiral mixing rod (50) is 5:

4.

5. The double-headed glue gun according to claim 1, characterized in that, The first glue inlet (10) and the second glue inlet (20) are symmetrical in the vertical direction.

6. The double-headed glue gun according to claim 1, characterized in that, Sealing rings are provided at the connection points of the first flow channel and the confluence block (30), the connection points of the second flow channel and the confluence block (30), and the connection points of the confluence block (30) and the glue inlet end of the mixing tube (40).

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