Gluing nozzle

Abstract

The utility model relates to the technical field of nozzle devices of gluing guns, in particular to a gluing nozzle which comprises a gun needle and a gun cap detachably connected to the gun needle, the gun needle is communicated with the gun cap, and the inner diameter of the gun cap is larger than that of the gun needle. The glue discharging device has the advantage that the stability of the glue discharging amount is improved.

Description

Technical Field

[0001] The present application relates to the technical field of glue gun nozzle devices, and in particular to a glue nozzle. Background Art

[0002] Adhesives are often used in industrial production. Glue guns are tools for applying glue (or squeezing glue). They may be used wherever glue is needed. They are widely used in building decoration, electronic appliances, automobiles and auto parts, ships and containers, etc.

[0003] The glue output of existing glue guns is generally controlled by changing the pressure in the glue storage barrel to control the amount of glue output from the gun nozzle, while the size of the gun nozzle opening is fixed. During operation, pressure is applied to the colloid in the glue storage barrel of the glue gun, and the colloid is sprayed out from the gun nozzle to glue between the required workpieces.

[0004] However, glue guns on the market currently generally have the following problems: when the operator stops spraying glue, the gun nozzle will continue to squeeze out glue under the action of residual pressure. If the glue nozzle cannot be closed in time, the extra glue will overflow, the glue output will be unstable, and the quality of the product will be affected. Utility Model Content

[0005] In order to reduce the amount of extra glue output, the present application provides a glue nozzle.

[0006] The present application provides a glue nozzle adopting the following technical solution:

[0007] A glue spraying nozzle comprises a gun needle and a gun cap detachably connected to the gun needle, the gun needle and the gun cap are connected, and the inner diameter of the gun cap is larger than the inner diameter of the gun needle.

[0008] By adopting the above technical solution, the user installs the gun needle to the glue outlet position of the glue gun and squeezes the glue storage barrel. The adhesive enters the gun needle from the inside of the glue storage barrel until it is smeared from the gun cap to the processing position to complete the gluing work. After the extrusion is completed, the squeezing of the glue storage barrel is stopped. The adhesive continues to be squeezed out from the gun needle under the action of the residual pressure. However, in the process of the gun needle entering the gun cap, since the inner diameter of the gun needle is smaller than the inner diameter of the gun cap, the pressure gradually decreases, the glue discharge of the adhesive in the gun cap stops, the extra glue discharge is reduced, and the product quality is improved.

[0009] Optionally, the gun needle includes a gun tip section, a gun barrel section connected to the gun tip section and a connecting section connected to the gun barrel section, the axes of the gun tip section, the axes of the gun barrel section and the connecting section coincide with each other, the gun tip section is provided with a glue injection hole, the glue injection hole penetrates the gun tip section and is connected to the interior of the gun barrel section, the connecting section is provided with a glue outlet hole, the glue outlet hole penetrates the connecting section and is connected to the interior of the gun barrel section, and the connecting section is detachably connected to the gun cap.

[0010] By adopting the above technical solution, the adhesive enters the connecting section after passing through the gun tip section and the gun barrel section, and enters the interior of the gun cap through the connecting adhesive of the connecting section and the gun cap. The glue outlet hole and the glue injection hole achieve the basic purpose of glue outlet, and the setting of the connecting section and the gun cap realizes a stable connection.

[0011] Optionally, the gun cap includes a cutout section and a threaded section connected to the cutout section, the axis of the threaded section coincides with the axis of the cutout section, the axis of the threaded section coincides with the axis of the connecting section, the threaded section and the connecting section are threadedly connected, a connecting hole is provided in the threaded section, the connecting hole is connected to the glue outlet hole, the inner diameter of the connecting hole is larger than the inner diameter of the glue outlet hole, and the cutout section is provided with a through hole, and the through hole is connected to the connecting hole.

[0012] By adopting the above technical solution, the basic connection between the gun cap and the gun needle is achieved, the connection between the gun cap and the threaded section of the connecting section is achieved, the stable connection between the gun needle and the gun cap is achieved, and the connecting hole and the through hole achieve the basic purpose of glue discharge.

[0013] Optionally, the inner diameter of the through hole is larger than the inner diameter of the glue outlet hole.

[0014] By adopting the above technical solution, the purpose of making the inner diameter of the gun needle part smaller than the inner diameter of the gun cap part is achieved. When the adhesive enters the gun cap from the gun needle under the action of residual force, the extrusion effect of the residual force is weakened, the additional glue output is reduced, and the purpose of improving product production quality is achieved.

[0015] Optionally, the inner diameter of the connecting hole is larger than the inner diameter of the through hole.

[0016] By adopting the above technical solution, the adhesive can smoothly enter the through hole from the connecting hole.

[0017] Optionally, the outer diameter of the gun barrel section is equal to the outer diameter of the threaded section, part of the inner diameter of the connecting hole is provided with an internal thread, the outside of the connecting section is provided with an external thread, and the connecting section is threadedly connected to the internal thread of the connecting hole.

[0018] By adopting the above technical solution, a stable connection between the gun cap and the gun needle is achieved.

[0019] Optionally, a chamfer is provided at a position where the glue outlet hole and the glue injection hole are connected.

[0020] By adopting the above technical solution, the flow rate of the adhesive becomes lower when passing through the chamfer, the extra glue output is reduced, and the product quality is improved.

[0021] Optionally, a chamfer is set at the port of the connecting section, and a chamfer is set at the end of the cutout section.

[0022] By adopting the above technical solution, the flow rate of the adhesive becomes lower when passing through the chamfer, the extra glue output is reduced, and the product quality is improved.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] The inner diameter of the glue injection hole in the present application is larger than the inner diameter of the glue outlet hole, and the inner diameter of the glue outlet hole is smaller than the inner diameter of the connecting hole. A chamfer is set at the connecting position between the glue injection hole and the glue outlet hole, which reduces the flow rate of the adhesive, reduces the extrusion effect of the residual force, reduces the extra glue output, and improves the product quality;

[0025] The connection positions of the connection holes and through holes in the present application are chamfered, which reduces the flow rate of the adhesive, reduces the extrusion effect of the residual force, reduces the extra glue output, and improves the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a glue nozzle disclosed in an embodiment of the present application.

[0027] Figure 2 It is a partial cross-sectional view of a glue nozzle in an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. gun needle; 11. gun tip section; 12. gun barrel section; 13. connecting section; 2. gun cap; 21. threaded section; 22. incision section; 3. glue injection hole; 4. glue outlet hole; 5. connecting hole; 6. through hole. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 -Attached Figure 2 This application is described in further detail.

[0030] Currently, in order to reduce the amount of extra glue output, an embodiment of the present application proposes a glue nozzle.

[0031] The present application embodiment discloses a glue nozzle. Figure 1 , a glue nozzle includes a gun needle and a gun cap threadedly connected to the gun needle, the gun needle 1 and the gun cap 2 are connected, when using the present application, the user connects the gun needle to the glue storage, and then squeezes the adhesive from the gun needle to the gun cap 2 by pressure, and applies the adhesive to a predetermined position through the gun cap 2, so as to achieve the basic purpose of gluing, the inner diameter of the gun cap 2 is larger than the inner diameter of the gun needle 1, when the user squeezes the glue storage barrel, the adhesive is discharged from the gun needle 1, and is finally squeezed to the glue discharge position of the gun cap 2, so as to achieve the purpose of gluing and gluing, when the user stops squeezing the glue storage barrel, the adhesive will continue to move toward the end of the gun cap 2 under the action of the residual force, because the diameter of the gun cap 2 is larger than the diameter of the gun needle 1, the pressure on the adhesive becomes smaller, the extrusion movement of the adhesive is weakened, the amount of adhesive continuously extruded is reduced, the extra glue discharge amount is reduced, and the quality of the product is improved.

[0032] Reference Figure 1 and Figure 2The gun needle 1 includes a gun tip section 11 connected to the glue storage barrel, a gun rod section 12 connected to the gun tip section 11, and a connecting section 13 connected to the gun rod section 12. The gun tip section 11 is connected to the glue storage barrel, and the connecting section 13 is threadedly connected to the gun cap to achieve the connection between the gun needle 1 and the gun cap 2, so that the glue enters the gun cap from the gun tip section 11. The gun tip section 11, the gun rod section 12 and the connecting section 13 are coaxial. The gun tip section 11 is provided with a glue injection hole 3, and the glue injection hole 3 penetrates the gun tip section 11 and then penetrates the gun rod section 12. The connecting section 13 is provided with a glue outlet hole 4, and the glue outlet hole 4 penetrates the connecting section 13 and then penetrates The gun rod section 12 is connected to the glue outlet hole 4 and the glue injection hole 3. The glue outlet hole 4, the glue injection hole 3 and the connecting section 13 are coaxial to achieve stable and continuous extrusion of the adhesive. The inner diameter of the glue injection hole 3 is smaller than the inner diameter of the glue outlet hole 4. When the user stops squeezing the glue storage barrel, the adhesive enters the glue outlet hole 4 from the glue injection hole 3 under the action of the residual force, and the pressure on the adhesive becomes smaller. At the same time, a chamfer is set at the position where the glue outlet hole 4 and the glue injection hole 3 are connected. When the adhesive passes through the chamfer, the flow rate of the adhesive is reduced, the extrusion effect of the adhesive is reduced, the extra glue output is reduced, and the product quality is improved.

[0033] Further, see Figure 1 and Figure 2 The gun cap 2 includes a cutout section 22 and a threaded section 21 connected to the cutout section 22, the axis of the threaded section 21 coincides with the axis of the cutout section 22, the axis of the threaded section 21 coincides with the axis of the connecting section 13, the threaded section 21 and the connecting section 13 are threadedly connected, the threaded section 21 is provided with a connecting hole 5, the outer diameter of the gun rod section 12 is equal to the outer diameter of the threaded section 21, an internal thread is arranged at one end of the connecting hole 5 close to the gun tip section 11, an external thread is arranged on the outside of the connecting section 13, the connecting section 13 is threadedly connected to the internal thread of the connecting hole 5, the threaded connection of the threaded section 21 and the connecting section 13 is realized, the stable connection between the gun needle 1 and the gun cap 2 is realized, the connecting hole 5 is connected with the glue outlet hole 4, the cutout section 22 is provided with a through hole 6, the through hole 6 is connected with the connecting hole 5, the axis of the glue outlet hole 4, the axis of the through hole 6 and the axis of the connecting hole 5 coincide, the smooth glue discharge is realized, and the purpose of the adhesive flowing from the gun needle 1 to the gun cap 2 and finally to the processing position is realized. The inner diameter of the connecting hole 5 is larger than the inner diameter of the glue outlet hole 4, and the port of the connecting section 13 is chamfered, so that when the adhesive enters the connecting hole 5, the extrusion effect of the residual force is reduced again, thereby reducing the amount of additional glue output. At the same time, the inner diameter of the through hole 6 is larger than the inner diameter of the glue outlet hole 4, and the inner diameter of the through hole 6 is smaller than the inner diameter of the connecting hole 5. A chamfer is set between the through hole 6 and the connecting hole 5, and the pressure effect of the residual force on the adhesive is reduced again. A chamfer is set at the end of the incision section 22, thereby reducing the amount of additional glue output and improving the product processing quality.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A glue nozzle, characterized in that: It comprises a gun needle (1) and a gun cap (2) detachably connected to the gun needle (1), the gun needle (1) and the gun cap (2) are connected, and the inner diameter of the gun cap (2) is larger than the inner diameter of the gun needle (1); The gun needle (1) comprises a gun tip section (11), a gun barrel section (12) connected to the gun tip section (11), and a connecting section (13) connected to the gun barrel section (12); the axes of the gun tip section (11), the gun barrel section (12), and the connecting section (13) coincide with each other; the gun tip section (11) is provided with a glue injection hole (3); the glue injection hole (3) penetrates the gun tip section (11) and is connected to the interior of the gun barrel section (12); the connecting section (13) is provided with a glue outlet hole (4); the glue outlet hole (4) penetrates the connecting section (13) and is connected to the interior of the gun barrel section (12); the connecting section (13) is detachably connected to the gun cap (2); The gun cap (2) comprises a cutout section (22) and a threaded section (21) connected to the cutout section (22); the axis of the threaded section (21) coincides with the axis of the cutout section (22); the axis of the threaded section (21) coincides with the axis of the connecting section (13); the threaded section (21) and the connecting section (13) are threadedly connected; the threaded section (21) is provided with a connecting hole (5); the connecting hole (5) is connected to the glue outlet hole (4); the inner diameter of the connecting hole (5) is larger than the inner diameter of the glue outlet hole (4); the cutout section (22) is provided with a through hole (6); the through hole (6) and the connecting hole (5) are connected; The inner diameter of the through hole (6) is greater than the inner diameter of the glue outlet hole (4); The inner diameter of the connecting hole (5) is greater than the inner diameter of the through hole (6).

2. A glue nozzle according to claim 1, characterized in that: The outer diameter of the gun barrel section (12) is equal to the outer diameter of the threaded section (21), part of the inner diameter of the connecting hole (5) is provided with an internal thread, the outside of the connecting section (13) is provided with an external thread, and the connecting section (13) is threadedly connected to the internal thread of the connecting hole (5).

3. The glue nozzle according to claim 1, characterized in that: A chamfer is provided at the position where the glue outlet hole (4) and the glue injection hole (3) are connected.

4. The glue nozzle according to claim 1, characterized in that: The port of the connecting section (13) is chamfered, and the end of the cutout section (22) is chamfered.

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