Novel joint seaming glue injection system
The new combined seam sealant injection system, utilizing a pneumatic reversing valve and sealant piping design, solves the problem of difficult combined seam sealant injection, achieving precise injection and backflow of sealant, and ensuring the sealing and aesthetics of HVAC ducts.
Patent Information
- Application Number
- CN202422879860.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-26
AI Technical Summary
During the manufacturing process of HVAC ducts, it is difficult to inject sealant into the joints, and the amount of sealant injected is not easy to control, which can easily lead to poor sealing or sealant leakage. In addition, the sealant is easy to solidify, which affects the sealing performance and aesthetics.
A novel combined seam injection system is adopted, which uses a pneumatic reversing valve to control the working state of the injection valve. Combined with the sealant pipeline design, it can achieve precise injection and backflow of sealant, avoid contact between the sealant and air, and ensure that the sealant does not solidify in the injection system.
It enables precise injection and backflow of sealant, ensuring sealing and system cleanliness, preventing sealant leakage and hardening, and improving the quality and aesthetics of pipe installation.
Smart Images
Figure CN223543324U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of HVAC pipe manufacturing, specifically a novel combined seam injection system. Background Technology
[0002] During the manufacturing process, HVAC ducts are installed using interlocking seams. The sealing performance of these interlocking seams determines the overall sealing performance of the ventilation duct.
[0003] The sealing test of HVAC ducts is usually carried out after the entire building's HVAC duct installation is completed. If the overall leakage of the building's HVAC ducts does not meet the requirements of CLASS C or CLASS SSD, the entire HVAC duct system needs to be inspected, the leak point needs to be found and repaired, and if the leakage is serious, the entire HVAC duct system needs to be dismantled and reinstalled.
[0004] To avoid such situations and ensure that HVAC ducts meet CLASS C or CLASS SSD leakage requirements before installation, it is usually necessary to apply sealant before the joint is installed.
[0005] Because the gap at the joint of the female sealant is small, typically 1 mm in diameter and 12.7 mm in depth, it is difficult to apply sealant after the joint is formed. Therefore, sealant can only be applied during the joint forming process. The following problems exist during sealant application for the female sealant: the amount of sealant applied needs to be moderate; too little sealant will result in poor sealing and leakage; too much sealant will cause glue to leak out, making it difficult to clean and affecting the appearance. The sealant will also solidify after a period of time due to moisture loss. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a novel combined bite-joint glue injection system.
[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0008] This utility model discloses a novel combined seam gluing system, comprising a base plate, a gluing valve on the base plate, a pneumatic reversing valve on the base plate, a working air path for the gluing valve and a stopping air path for the gluing valve connected to the gluing valve, a first sealant pipeline connected to the outlet end of the gluing valve, a gluing head connected to the end of the first sealant pipeline, a second sealant pipeline connected to the inlet end of the gluing valve, and an air source pipeline connected to the air inlet end of the pneumatic reversing valve.
[0009] As a preferred embodiment of this utility model, the gas source pipeline is provided with a gas source switch, and the outer end of the gas source pipeline is provided with a gas source interface.
[0010] As a preferred technical solution of this utility model, the air source interface needs to be connected to compressed air, and the pressure is set to 0.6 MPa.
[0011] As a preferred embodiment of this utility model, a flow regulating valve is provided on the second sealing tube.
[0012] As a preferred embodiment of this utility model, the outer end of the second sealant pipeline is provided with a sealant interface.
[0013] As a preferred embodiment of this utility model, the sealant interface is connected to the sealant source, and the sealant pressure is 0.3 MPa.
[0014] As a preferred embodiment of this utility model, the pneumatic directional valve is an electromagnetic pneumatic directional valve.
[0015] The beneficial effects of this utility model are:
[0016] This novel combined seam injection system controls a pneumatic reversing valve, which keeps the working air path of the injection valve open and the stopping air path closed, thus driving the injection valve into the open state to begin the injection process. Sealant flows out from the injection head. When the injection process ends, the injection valve automatically returns to its original position because the working air path is closed, causing the sealant to flow back from the injection head. This causes the sealant to contract backward from the round hole of the injection head, reducing the contact between the sealant and air and ensuring that the sealant does not solidify in the injection system, thus preventing damage to the system. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0018] Figure 1 This is a schematic diagram of the structure of a novel combined bite-joint glue injection system according to this utility model.
[0019] In the diagram: 1. Base plate; 2. Injection valve; 3. Pneumatic reversing valve; 4. Working air path of injection valve; 5. Stopping air path of injection valve; 6. First sealant pipeline; 7. Injection head; 8. Second sealant pipeline; 9. Air source pipeline; 10. Air source switch; 11. Air source interface; 12. Flow regulating valve; 13. Sealant interface. Detailed Implementation
[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0021] Example: Figure 1 As shown, this utility model discloses a novel combined seam gluing system, comprising a base plate 1, on which a gluing valve 2 is mounted to control the opening and closing of the gluing pipeline. A pneumatic reversing valve 3 is also mounted on the base plate 1, with a working air path 4 and a stopping air path 5 connected to the gluing valve 2. The outlet end of the gluing valve 2 is connected to a first sealant pipeline 6, and the end of the first sealant pipeline 6 is connected to a gluing head 7. The inlet end of the gluing valve 2 is connected to a second sealant pipeline 8, and the inlet end of the pneumatic reversing valve 3 is connected to an air source pipeline 9. When an external detection switch detects material, the PLC sends a signal to the electromagnetic pneumatic reversing valve 3 after a delay, causing the working air path 4 of the gluing valve to be on and the stopping air path 5 of the gluing valve to be off, thereby driving the gluing valve 2 into a continuous state and initiating the gluing process. Sealant flows out from the gluing head 7.
[0022] When the glue injection process is completed, the glue injection valve stops the connection of the working air passage 5, and the glue injection valve 2 automatically returns to its original position. This causes the sealant to flow back from the glue injection head 7, resulting in the sealant shrinking backward by 1-1.5 mm from the two 1.5 mm diameter holes in the glue injection head 7. This reduces the contact between the sealant and air, ensuring that the sealant does not solidify in the glue injection system and damage the system. The glue injection head 7 adopts different structures depending on the shape of the female joint bite, and is used to inject sealant into the secondary joint bite during the female joint bite molding process.
[0023] The air source pipeline 9 is equipped with an air source switch 10 to control the on / off state of the air path, and the outer end of the air source pipeline 9 is equipped with an air source interface 11. The air source interface 11 needs to be connected to compressed air, and the pressure is set to 0.6 MPa.
[0024] The second sealant line 8 is equipped with a flow regulating valve 12. 用于调节注胶 quantity.
[0025] The second sealant conduit 8 has a sealant interface 13 at its outer end.
[0026] The sealant interface 13 is connected to the sealant source, and the sealant pressure is 0.3 MPa.
[0027] The pneumatic directional valve 3 is an electromagnetic pneumatic directional valve.
[0028] During operation, the working process of this new type of combined bite-joint glue injection system is as follows: check that the air source interface 11 is connected to the air source, the pressure is sufficient, and the air source switch 10 is in the open state.
[0029] Check that the sealant interface 13 is connected to the sealant source and that the sealant pressure meets the requirements.
[0030] When the external detection switch detects the material, the PLC sends a signal to the electromagnetic pneumatic reversing valve 3 after a delay, which turns the working air circuit 4 of the glue injection valve into the on state and the stopping air circuit 5 of the glue injection valve into the off state, thereby driving the glue injection valve 2 into the on state and starting the glue injection work, with sealant flowing out from the glue injection head 7.
[0031] When the external detection switch detects that the material has been completed, the PLC sends a signal to the electromagnetic pneumatic reversing valve after a delay, causing the glue injection valve to stop working. The air circuit 5 is in the open state, and the working air circuit 4 of the glue injection valve is in the closed state, thereby driving the glue injection valve 2 to be in the closed state, ending the glue injection work, and no sealant flows out from the glue injection head 7.
[0032] The dispensing head 7 has two 1.5 mm diameter holes for adding sealant to the female joint bite joint, which is convenient for use with the sealant flow regulating ball valve to adjust the sealant flow rate.
[0033] When the dispensing operation is finished, the dispensing valve stops the connection of the working air passage 5, and the dispensing valve 2 will automatically return to its original position, thereby causing the sealant to flow back from the dispensing head 7. This causes the sealant to shrink backward by 1-1.5 mm from the two 1.5 mm diameter holes of the dispensing head 7, thereby reducing the contact between the sealant and the air, ensuring that the sealant does not solidify in the dispensing system and damage the dispensing system.
[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A novel combined bite-joint glue injection system, characterized in that, Includes a base plate (1), on which a glue injection valve (2) is provided, and on which a pneumatic reversing valve (3) is provided. The pneumatic reversing valve (3) is provided with a glue injection valve working air passage (4) and a glue injection valve stopping air passage (5) connected to the glue injection valve (2). The glue outlet end of the glue injection valve (2) is connected to a first sealant pipeline (6), and the end of the first sealant pipeline (6) is connected to a glue injection head (7). The glue inlet end of the glue injection valve (2) is connected to a second sealant pipeline (8), and the air inlet end of the pneumatic reversing valve (3) is connected to an air source pipeline (9).
2. The novel combined seam injection system according to claim 1, characterized in that, The gas source pipeline (9) is equipped with a gas source switch (10), and the outer end of the gas source pipeline (9) is equipped with a gas source interface (11).
3. The novel combined seam injection system according to claim 2, characterized in that, The air source interface (11) needs to be connected to compressed air, and the pressure is set to 0.6 MPa.
4. The novel combined seam injection system according to claim 1, characterized in that, The second sealant line (8) is equipped with a flow regulating valve (12).
5. A novel combined seam injection system according to claim 1, characterized in that, The outer end of the second sealant conduit (8) is provided with a sealant interface (13).
6. A novel combined seam injection system according to claim 5, characterized in that, The sealant interface (13) is connected to the sealant source, and the sealant pressure is 0.3 MPa.
7. A novel combined bite-joint glue injection system according to claim 1, characterized in that, The pneumatic directional valve (3) is an electromagnetic pneumatic directional valve.