Foam joint mixture glue gun convenient to quantitatively control

Abstract

The utility model relates to the technical field of foam joint mixture glue guns, and discloses a foam joint mixture glue gun convenient for quantitative control, which comprises a main gun body, an auxiliary gun body, a support seat and a handle, and further comprises a quantity control component arranged on the outer side of a support cylinder and convenient for controlling the liquid outlet quantity of a joint mixture, and the discharging assembly is arranged in the main gun body and used for controlling connection and disconnection of the joint mixture in the liquid conveying pipe. According to the utility model, the disassembly and assembly process of the polyurethane foam joint mixture tank can be simplified through the quick assembly component, and the quick disassembly and assembly of the polyurethane foam joint mixture tank can be realized; the adjusting assembly is matched with the quantity control assembly, the overlapping area of the first liquid opening and the second liquid opening can be adjusted, then the liquid outlet quantity is controlled, and use convenience is improved; and the discharging assembly drives the spring to be compressed, so that the bottom end of the liquid conveying pipe is in a circulating state, the polyurethane foam enters the gun barrel under the action of air pressure and then is output to the outside from the nozzle, and thus the caulking work can be conveniently carried out.

Description

Technical Field

[0001] This utility model relates to the field of foam sealant caulking gun technology, specifically to a foam sealant caulking gun that is easy to control in quantitative amounts. Background Technology

[0002] A foam sealant gun is a tool specifically designed for spraying polyurethane foam sealant. It typically consists of a gun body, a barrel, and a trigger. The sealant is extruded from the barrel using compressed air or manual operation. It has multiple functions, including sealing, insulation, and filling, and is therefore widely used in construction, decoration, and maintenance. Before using a foam sealant gun, the sealant can must be installed. After installation, the spray volume and speed are controlled by the trigger to perform the sealing work.

[0003] When using existing foam caulking guns, the amount of liquid dispensed from the nozzle is generally affected by the internal air pressure or extrusion force of the gun. When workers apply caulking guns to narrow cracks in wall corners, the caulking force is often difficult to control, resulting in excessive caulking. This wastes caulking resources, and the overflowing caulking is troublesome to clean up and affects the aesthetics of the wall, which is detrimental to the use of foam caulking guns. Utility Model Content

[0004] The purpose of this invention is to provide a foam sealant gun that is easy to control in quantitative amounts, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foam sealant gun for easy quantitative control, comprising a main gun body, a secondary gun body, a support base, and a handle. The support base is located between the main gun body and the secondary gun body, and is connected to both the main gun body and the secondary gun body. The top of the handle is connected to the main gun body, and a trigger is provided on one side of the handle. The top of the trigger is hinged to the support base via a pivot. A gun barrel is fixedly connected to one end of the secondary gun body, and an infusion tube is fixedly connected to the top of the secondary gun body. A support cylinder is coaxially provided inside the infusion tube. The device also includes:

[0006] A volume control component is provided on the outside of the support cylinder to facilitate control of the sealant dispensing volume. The outside of the infusion tube is provided with a receiving cavity, and the receiving cavity is provided with an adjustment component to facilitate quick adjustment of the volume control component from the outside of the infusion tube.

[0007] A dispensing assembly is installed inside the main gun body to control the flow of sealant inside the infusion tube. A one-way valve is fixedly connected to the top of the infusion tube, and a quick-installation assembly is provided on the top of the one-way valve to reduce the difficulty of disassembling and assembling the polyurethane sealant can.

[0008] Preferably, the volume control component includes a first disc fixed to the top of the inner cavity of the support cylinder, a second disc above the first disc, the outer wall of the second disc being connected to the infusion tube, a plurality of second liquid ports being opened on the outer side of the second disc, the plurality of second liquid ports being distributed circumferentially along the inner wall of the infusion tube, a first liquid port corresponding to the second liquid ports being opened on the outer side of the first disc, the second liquid ports being connected to the inside of the support cylinder through the first liquid ports, an annular slider being fixedly connected to the outer side of the support cylinder, an annular groove corresponding to the annular slider being opened on the inner wall of the infusion tube, and the annular slider being located inside the annular groove.

[0009] Preferably, the adjustment assembly includes a worm gear disposed inside the receiving cavity, the worm gear being rotatably connected to both sides of the inner wall of the receiving cavity, a linkage tooth corresponding to the worm gear being provided on the outer side of the bottom end of the support cylinder, one side of the worm gear meshing with the linkage tooth, and one end of the worm gear extending through to the outside of the receiving cavity and being fixedly connected to an adjustment knob.

[0010] Preferably, the discharge assembly includes a ejector pin disposed inside the main gun body, one end of the ejector pin penetrating into the interior of the secondary gun body, a top ring disposed on the outer side of the ejector pin, the inner wall of the trigger contacting the top ring, and a spring coaxially disposed around the ejector pin, the spring being connected to the top ring and the main gun body respectively.

[0011] Preferably, one side of the handle is provided with a clamping protrusion to facilitate control of the trigger movement range.

[0012] Preferably, the quick-assembly assembly includes an internally threaded cylinder fixed to the top of the one-way valve, and the bottom of the inner cavity of the internally threaded cylinder is provided with a feed port, which is connected to the liquid inlet of the one-way valve.

[0013] Preferably, a nozzle is installed at the end of the barrel away from the sub-barrel, and the nozzle is made of copper or stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention simplifies the assembly and disassembly process of polyurethane foam sealant cans through a quick-assembly component, enabling rapid assembly and disassembly. The adjustment component, in conjunction with the volume control component, allows adjustment of the overlapping area between the first and second liquid outlets, thereby controlling the liquid output and improving ease of use. The discharge component compresses a spring, ensuring the bottom of the delivery tube is in a flowing state. Under air pressure, the polyurethane foam enters the gun barrel and is then output from the nozzle to the outside, facilitating the sealant application process. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the foam sealant gun that facilitates quantitative control according to this utility model;

[0017] Figure 2 A schematic diagram of the material discharge assembly structure provided by this utility model;

[0018] Figure 3 A schematic diagram of the adjustment component structure provided by this utility model;

[0019] Figure 4 A schematic diagram of the control component structure provided by this utility model.

[0020] In the diagram: 1. Main gun body; 2. Secondary gun body; 3. Support base; 4. Handle; 5. Barrel; 6. Nozzle; 7. Trigger; 8. Adjustment assembly; 81. Linkage gear; 82. Adjustment knob; 83. Worm gear; 9. Clamping protrusion; 10. Infusion tube; 11. One-way valve; 12. Quick-release assembly; 121. Internal threaded cylinder; 122. Feed port; 13. Discharge assembly; 131. Top ring; 132. Ejector pin; 133. Spring; 14. Receiving cavity; 15. Support cylinder; 16. Volume control assembly; 161. First disc; 162. First liquid port; 163. Second disc; 164. Second liquid port; 165. Annular slider; 166. Annular groove. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4As shown, a foam sealant gun for easy quantitative control includes a main gun body 1, a secondary gun body 2, a support base 3, and a handle 4. The support base 3 is located between the main gun body 1 and the secondary gun body 2, and is connected to both the main gun body 1 and the secondary gun body 2. The top of the handle 4 is connected to the main gun body 1, and a trigger 7 is provided on one side of the handle 4. The top of the trigger 7 is hinged to the support base 3 via a pivot. A barrel 5 is fixedly connected to one end of the secondary gun body 2, and an infusion tube 10 is fixedly connected to the top of the secondary gun body 2. A support cylinder 15 is coaxially provided inside the infusion tube 10. The gun also includes a flow control component 16 located outside the support cylinder 15 to facilitate control of the sealant dispensing volume. By setting the flow control component 16, the operator can easily control the flow rate of sealant inside the infusion tube 10 according to the actual situation. The infusion tube 10 has a receiving cavity 14 on its outer side. Inside the receiving cavity 14 is an adjustment component 8 that allows for quick adjustment of the volume control component 16 from the outside of the infusion tube 10. By setting the adjustment component 8 and cooperating with the volume control component 16, the amount of sealant dispensed can be controlled from the outside of the infusion tube 10. A discharge component 13 is set inside the main gun body 1 to control the flow of sealant inside the infusion tube 10. By setting the discharge component 13, the flow of sealant between the infusion tube 10 and the auxiliary gun body 2 can be controlled. A one-way valve 11 is fixedly connected to the top of the infusion tube 10. The top of the one-way valve 11 is equipped with a quick-installation component 12 to reduce the difficulty of disassembling and assembling the polyurethane sealant can. By setting the quick-installation component 12, the disassembly and assembly process of the sealant can can be simplified, and quick disassembly and assembly of the sealant can can be achieved.

[0023] The volume control assembly 16 includes a first disc 161 fixed to the top of the inner cavity of the support cylinder 15, a second disc 163 above the first disc 161, the outer wall of the second disc 163 connected to the infusion tube 10, and multiple second liquid ports 164 opened on the outer side of the second disc 163. These multiple second liquid ports 164 are distributed circumferentially along the inner wall of the infusion tube 10. A first liquid port 162 corresponding to the second liquid ports 164 is opened on the outer side of the first disc 161. The second liquid ports 164 communicate with the interior of the support cylinder 15 through the first liquid ports 162. An annular slider 165 is fixedly connected to the outer side of the support cylinder 15. An annular groove 166 corresponding to the annular slider 165 is opened on the inner wall of the infusion tube 10. The annular slider 165 is located inside the annular groove 166. Figure 3 , Figure 4As shown, when it is necessary to adjust the amount of sealant dispensed, the annular slider 165 and annular groove 166 can be used to rotate the support cylinder 15 as a whole. This adjusts the overlapping area of ​​the first liquid outlet 162 on the first disc 161 and the second liquid outlet 164 on the second liquid outlet 164, thereby controlling the amount of sealant dispensed. When it is necessary to fill some small gaps, the operator can rotate the support cylinder 15 to make the first liquid outlet 162 and the second liquid outlet 164 staggered. At this time, the gap between each pair of connected first liquid outlets 162 and second liquid outlets 164 is greatly reduced, and the sealant flow rate is reduced accordingly. Conversely, when the first liquid outlet 162 and the second liquid outlet 164 are overlapped, the sealant flow rate is at its maximum. This achieves quick control and adjustment of the sealant flow rate, improving the convenience of use.

[0024] The adjusting assembly 8 includes a worm gear 83 disposed inside the receiving cavity 14. The worm gear 83 is rotatably connected to both sides of the inner wall of the receiving cavity 14. A linkage tooth 81 corresponding to the worm gear 83 is provided on the outer side of the bottom end of the support cylinder 15. One side of the worm gear 83 meshes with the linkage tooth 81. One end of the worm gear 83 extends through to the outside of the receiving cavity 14 and is fixedly connected to an adjusting knob 82. Figure 3 , Figure 4 As shown, by setting the worm gear 83 and the linkage gear 81, the support cylinder 15 can be rotated as a whole, thereby adjusting the overlapping area of ​​the first liquid port 162 and the second liquid port 164, which facilitates the control of the liquid output.

[0025] The discharge assembly 13 includes a ejector pin 132 disposed inside the main gun body 1. One end of the ejector pin 132 extends into the interior of the secondary gun body 2. A top ring 131 is provided on the outer side of the ejector pin 132. The inner wall of the trigger 7 contacts the top ring 131. A spring 133 is coaxially disposed around the ejector pin 132. The spring 133 is connected to both the top ring 131 and the main gun body 1. Figure 1 , Figure 2 As shown, the trigger 7 can drive the top ring 131 and the ejector pin 132 to move to one side of the main gun body 1. At this time, the spring 133 is compressed, and the bottom end of the infusion tube 10 is in a flowing state. Then, the polyurethane foam inside the sealant can enter the gun barrel 5 in sequence through the quick-release assembly 12, the one-way valve 11, the volume control assembly 16, and the infusion tube 10 under the action of air pressure. This facilitates the sealant filling work. After the sealant filling work is completed, the trigger 7 can be released to allow the ejector pin 132 to return to its original position under the action of the spring 133. At this time, the bottom end of the infusion tube 10 is in a cut-off state, and the polyurethane foam cannot be discharged from the gun barrel 5.

[0026] One side of the handle 4 is provided with a locking protrusion 9 to facilitate control of the movement range of the trigger 7, such as... Figure 1 , Figure 2 As shown, the abutting protrusion 9 can be used to press against the trigger 7 to stop its displacement, thereby controlling its movement range.

[0027] The quick-install assembly 12 includes an internally threaded cylinder 121 fixed to the top of the check valve 11. The bottom of the inner cavity of the internally threaded cylinder 121 has a feed inlet 122, which is connected to the liquid inlet of the check valve 11. Figure 1 , Figure 2 As shown, when installing the polyurethane sealant can, the internal threaded cylinder 121 can be matched with the external thread at the can opening of the sealant can to achieve quick installation of the sealant can. After the sealant can is installed, the sealant can be introduced into the one-way valve 11 through the inlet 122, which facilitates the subsequent sealing work.

[0028] A nozzle 6 is installed at the end of the barrel 5 furthest from the secondary gun body 2. The nozzle 6 is made of copper or stainless steel. Figure 1 , Figure 2 As shown, by setting the nozzle 6, the sealant sprayed from inside the barrel 5 can be more even, which is beneficial to improving the aesthetics. The nozzle 6, made of copper or stainless steel, has the advantages of corrosion resistance, easy cleaning, and non-clogging, making it convenient for maintenance.

[0029] Working principle: First, the quick-install component 12 simplifies the disassembly and assembly process of the polyurethane foam sealant can, enabling quick disassembly and assembly. After the sealant can is installed, the overlapping area of ​​the first liquid outlet 162 and the second liquid outlet 164 can be adjusted by the adjustment component 8 in conjunction with the volume control component 16, thereby controlling the liquid output and improving ease of use. After the liquid output is adjusted, the discharge component 13 drives the spring 133 to compress, so that the bottom of the delivery tube 10 is in a flow state. At this time, the polyurethane foam enters the gun barrel 5 under the action of air pressure and is then output from the nozzle 6 to the outside, which facilitates the sealing work.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foam sealant gun for easy quantitative control, comprising a main gun body (1), a secondary gun body (2), a support base (3), and a handle (4), characterized in that, The support base (3) is located between the main gun body (1) and the secondary gun body (2). The support base (3) is connected to the main gun body (1) and the secondary gun body (2) respectively. The top of the handle (4) is connected to the main gun body (1). A trigger (7) is provided on one side of the handle (4). The top of the trigger (7) is hinged to the support base (3) through a pivot. A gun barrel (5) is fixedly connected to one end of the secondary gun body (2). An infusion tube (10) is fixedly connected to the top of the secondary gun body (2). A support cylinder (15) is coaxially provided inside the infusion tube (10). The system also includes: A volume control component (16) is provided on the outside of the support cylinder (15) to facilitate the control of the amount of sealant dispensed. A receiving cavity (14) is provided on the outside of the infusion tube (10). An adjustment component (8) is provided inside the receiving cavity (14) to facilitate quick adjustment of the volume control component (16) from the outside of the infusion tube (10). A discharge assembly (13) is installed inside the main gun body (1) to control the flow of sealant inside the infusion tube (10). A one-way valve (11) is fixedly connected to the top of the infusion tube (10). A quick-installation assembly (12) is provided on the top of the one-way valve (11) to reduce the difficulty of disassembling and assembling the polyurethane sealant can.

2. The foam sealant gun for easy quantitative control according to claim 1, characterized in that: The volume control component (16) includes a first disc (161) fixed to the top of the inner cavity of the support cylinder (15), a second disc (163) above the first disc (161), the outer wall of the second disc (163) being connected to the infusion tube (10), a plurality of second liquid ports (164) being opened on the outer side of the second disc (163), the plurality of second liquid ports (164) being distributed circumferentially along the inner wall of the infusion tube (10), a first liquid port (162) corresponding to the second liquid port (164) being opened on the outer side of the first disc (161), the second liquid port (164) being connected to the inside of the support cylinder (15) through the first liquid port (162), an annular slider (165) being fixedly connected to the outer side of the support cylinder (15), an annular groove (166) corresponding to the annular slider (165) being opened on the inner wall of the infusion tube (10), and the annular slider (165) being located inside the annular groove (166).

3. The foam sealant gun for easy quantitative control according to claim 1, characterized in that: The adjustment assembly (8) includes a worm gear (83) disposed inside the receiving cavity (14). The worm gear (83) is rotatably connected to both sides of the inner wall of the receiving cavity (14). The bottom outer side of the support cylinder (15) is provided with a linkage tooth (81) corresponding to the worm gear (83). One side of the worm gear (83) meshes with the linkage tooth (81). One end of the worm gear (83) extends through to the outside of the receiving cavity (14) and is fixedly connected to an adjustment knob (82).

4. The foam sealant gun for easy quantitative control according to claim 1, characterized in that: The discharge assembly (13) includes a ejector pin (132) disposed inside the main gun body (1). One end of the ejector pin (132) extends into the interior of the auxiliary gun body (2). A top ring (131) is provided on the outer side of the ejector pin (132). The inner wall of the trigger (7) is in contact with the top ring (131). A spring (133) is coaxially disposed on the periphery of the ejector pin (132). The spring (133) is connected to the top ring (131) and the main gun body (1) respectively.

5. A foam sealant gun for easy quantitative control according to claim 1, characterized in that: The handle (4) has a locking protrusion (9) on one side to facilitate control of the movement range of the trigger (7).

6. The foam sealant gun for easy quantitative control according to claim 1, characterized in that: The quick-assembly assembly (12) includes an internally threaded cylinder (121) fixed to the top of the one-way valve (11). The bottom of the inner cavity of the internally threaded cylinder (121) is provided with a feed port (122), which is connected to the liquid inlet of the one-way valve (11).

7. The foam sealant gun for easy quantitative control according to claim 1, characterized in that: A nozzle (6) is installed at the end of the barrel (5) away from the sub-barrel (2), and the nozzle (6) is made of copper or stainless steel.

Images