Construction method for restraining the expansion of polyurethane foam sealant in window frame installation

Abstract

The present invention relates to the field of building construction, and specifically to a construction method for restraining the outward expansion of polyurethane foam sealant during window frame installation, comprising S1, designing a window frame clamp, the window frame clamp comprising a clamp body, a secondary movable screw rod being threaded through a first side surface of the clamp body, a fixed clamping groove being provided on an inner wall of a second side surface of the clamp body and near a notch, a main movable screw rod being threaded through the first side surface of the clamp body, the main movable screw rod being opposite to the fixed clamping groove, and a movable clamping groove being provided at an inner end of the main movable screw rod; S2, making the window frame clamp; S3, filling the gap with polyurethane foam sealant; the solution provided by the present invention avoids the deficiencies and defects of the prior art, restrains the polyurethane foam sealant, ensures the density of the filling of the gap between the window frame and the structure, has good molding effect and anti-leakage effect, and has no effect on the construction of sealant; is suitable for most window frame installations, has fast assembly and disassembly, is reusable, has good construction quality, does not damage the window frame, and saves labor and material costs.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a construction method for restraining the outward expansion of a polyurethane foam sealant during window frame installation. Background Art

[0002] To ensure window leak prevention, the gap between the window frame and the building structure requires secondary sealing. Currently, two main materials are used to seal the gap between the window frame and the building structure: micro-expanding waterproof cement mortar and polyurethane foam caulking. The first method, micro-expanding waterproof cement mortar, is difficult to apply and labor-intensive, easily contaminating the window frame. Furthermore, the loose filling results in poor sealing and can lead to leakage, resulting in seal failure. The second method, polyurethane foam caulking, has two application methods: First, after the polyurethane foam caulking has expanded and solidified, the excess is cut away with a knife. This method is quick to apply, but cutting the waterproof foam can create a risk of leakage. Second, before the polyurethane foam caulking has fully solidified, the excess is manually pressed into the gap. This method provides good leak prevention, but is cumbersome, labor-intensive, and the uneven surface of the foam after forming can affect the quality of the subsequent window frame sealant application. Summary of the Invention

[0003] In response to the above problems, an embodiment of the present invention provides a construction method for restraining the outward expansion of polyurethane foam sealant during window frame installation.

[0004] An embodiment of the present invention provides a construction method for restraining the expansion of a polyurethane foam sealant during window frame installation, comprising:

[0005] S1. Design window frame fixture

[0006] The window frame clamp includes a clamp body in a groove shape, a secondary movable screw rod is threadedly provided on a first side surface of the clamp body, a fixed clamp groove is provided on an inner wall of a second side surface of the clamp body near the groove, and the fixed clamp groove is provided along the axis direction of the clamp body, a main movable screw rod is threadedly provided on the first side surface of the clamp body, the main movable screw rod is opposite to the fixed clamp groove, and a movable clamp groove is provided on the inner end of the main movable screw rod;

[0007] S2. Make window frame fixture

[0008] The fixture body is manufactured according to the thickness of the window frame, a threaded hole is opened on the first side of the fixture body, and a secondary movable screw rod is inserted into the threaded hole; the position of the fixed clamping groove is determined on the inner wall of the second side of the fixture body according to the width of the gap between the window frame and the building structure, and a fixed clamping groove is opened; a threaded hole is opened on the first side of the fixture body at a position opposite to the fixed clamping groove, and a main movable screw rod is inserted into the threaded hole; the inner end of the main movable screw rod is provided with a movable clamping groove opposite to the fixed clamping groove;

[0009] S3, gap filling polyurethane foam sealant

[0010] According to the length of the gap, cut two restraining sleeves of appropriate length, press the first restraining sleeve against the gap on the water-facing side of the window frame outside the room, set the main spacer cover of the clamp on the window frame and clamp the first restraining sleeve in the fixed clamping groove, rotate the sub-movable screw so that the inner end of the sub-movable screw presses against the window frame, thereby clamping the first restraining sleeve in the gap; fill the gap from the water-repellent side of the window frame indoors with polyurethane foam sealant, and after the filling is completed, press the second restraining sleeve against the gap on the water-repellent side of the window frame indoors, rotate the main movable screw so that the movable clamping groove presses against the second restraining sleeve, and remove the window frame clamp and the restraining sleeve after the polyurethane foam sealant swells and solidifies.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The construction method of the present invention is applicable to a wide range of window frame installations, and this method can be used to seal both the upper and lower openings of the window frame and the side openings of the window frame; 2. The clamps used in the construction method of the present invention are similar to the fasteners commonly used in construction projects, and are directly customized in batches by the factory according to the actual situation on site. The restraining sleeves can be cut and formed on site from electrical sleeves of corresponding specifications according to the actual size of the window frame on site; and they can be reused after being disassembled after use, saving costs; 3. The construction method of the present invention realizes factory customization and on-site installation of the finished fixture, and the installation is simple, and no tools are required for on-site installation and disassembly; 4. The construction method of the present invention is relatively simple. Compared with the original construction method that requires gluing on both sides of the window frame, this method only requires gluing on the side of the window frame facing the water, and eliminates the need for later excision of the external expansion foam, greatly reducing the workload. At the same time, it avoids the need for high-altitude probes when gluing the outdoor water-facing side of the window frame, thereby improving operational safety. 5. The installation and removal of the fixtures used in the construction method of the present invention do not damage the window frame and structure, while also avoiding the large amount of construction waste generated when the external expansion foam is excised. 6. After the polyurethane foam sealant is filled, the constraints on both sides of the gap prevent the polyurethane foam sealant from expanding outward and can only expand inside the gap, greatly improving the density of the gap between the window frame and the structure. The anti-leakage effect will be better, while also saving the amount of polyurethane foam sealant used and saving costs. 7. The construction method of the present invention avoids the shortcomings and defects of the existing technology, constrains the polyurethane foam sealant, ensures the density of the gap between the window frame and the structure, and has good molding and anti-leakage effects, without affecting the construction of the sealant. The construction method of the present invention is applicable to the installation of most window frames, has the advantages of simple operation, quick assembly and disassembly, repeated use, good quality and effect, no damage to the window frame, saving labor and materials, and saving costs.

[0012] Optionally, the clamp body is made of hard metal, is circular or square in shape as a whole, has a width greater than the thickness of the window frame, and is 30 mm in length.

[0013] Optionally, the main movable lead screw and the auxiliary movable lead screw are made of hard metal and are both provided with an integrally formed handle.

[0014] Optionally, the main movable screw rod and the movable clamping groove adopt a separate structure, or the main movable screw rod and the movable clamping groove are rotatably connected.

[0015] Optionally, the restraining sleeve adopts an electrical sleeve, the diameter of which is determined according to the width of the gap, and the length is determined according to the length / width of the window frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a window frame clamp provided by an embodiment of the present invention;

[0018] Figure 2 A schematic side view of the window frame clamp provided by an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the construction structure of the window frame clamp provided in an embodiment of the present invention.

[0020] Among them, 1. clamp body; 2. auxiliary movable screw rod; 3. fixed clamping groove; 4. main movable screw rod; 5. movable clamping groove; 6. window frame; 7. building structure; 8. first restraint sleeve; 9. polyurethane foam sealant; 10. second restraint sleeve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0022] An embodiment of the present invention provides a construction method for restraining the expansion of a polyurethane foam sealant during window frame installation, comprising:

[0023] S1. Design window frame fixture

[0024] The window frame clamp includes a groove-shaped clamp body 1, a secondary movable screw rod 2 is threadedly inserted into the first side surface of the clamp body 1, a fixed clamping groove 3 is provided on the inner wall of the second side surface of the clamp body 1 and near the groove, and the fixed clamping groove 3 is arranged along the axis direction of the clamp body 1, and a main movable screw rod 4 is threadedly inserted into the first side surface of the clamp body 1. The main movable screw rod 4 is opposite to the fixed clamping groove 3, and a movable clamping groove 5 is provided at the inner end of the main movable screw rod 4;

[0025] S2. Make window frame fixture

[0026] A fixture body 1 is manufactured according to the thickness of the window frame 6. A threaded hole is provided on the first side of the fixture body 1, and a secondary movable screw rod 2 is inserted into the threaded hole. A fixed clamping groove 3 is positioned and provided on the inner wall of the second side of the fixture body 1 according to the width of the gap between the window frame 6 and the building structure 7. A threaded hole is provided on the first side of the fixture body 1 at a position corresponding to the fixed clamping groove 3, and a main movable screw rod 4 is inserted into the threaded hole. A movable clamping groove 5 is provided at the inner end of the main movable screw rod 4, opposite to the fixed clamping groove 3.

[0027] S3, gap filling polyurethane foam sealant

[0028] According to the length of the gap, cut two restraining sleeves of appropriate length, press the first restraining sleeve 8 against the gap on the outdoor water-facing side of the window frame 6, set the clamp body 1 spacer cover on the window frame 6 and clamp the first restraining sleeve 8 in the fixed clamping groove 3, rotate the sub-movable screw 2 so that the inner end of the sub-movable screw 2 presses against the window frame 6, thereby clamping the first restraining sleeve 8 in the gap; fill the gap from the gap on the indoor water-repellent side of the window frame 6 with polyurethane foam sealant 9, and after the filling is completed, press the second restraining sleeve 10 against the gap on the indoor water-repellent side of the window frame 6, rotate the main movable screw 4 so that the movable clamping groove 5 presses against the second restraining sleeve 10, and remove the window frame clamp and the restraining sleeve after the polyurethane foam sealant 9 swells and solidifies.

[0029] In practice, the clamp body 1 is made of hard metal material, such as square steel, channel steel, etc., and is circular or square in shape as a whole, with a width greater than the thickness of the window frame by 50 mm and a length of 30 mm.

[0030] The main movable screw rod 4 and the auxiliary movable screw rod 2 are made of hard metal and are both provided with an integrally formed handle. They can be made of round steel with a diameter of 18 mm. The main movable screw rod 4 and the auxiliary movable screw rod 2 are 100 mm long.

[0031] The main movable screw rod 4 and the movable clamping groove 5 adopt a split structure. When in use, the movable clamping groove 5 is buckled on the second constraint sleeve 10 and then the main movable screw rod 4 is rotated to tighten the movable clamping groove 5; or the main movable screw rod 4 and the movable clamping groove 5 are rotatably connected. When in use, the main movable screw rod 4 is rotated to drive the movable clamping groove 5 to move and finally tighten the second constraint sleeve 10.

[0032] The restraining sleeve adopts an electrical sleeve. The diameter is determined according to the width of the gap, generally 20mm, and the length is determined according to the length / width of the window frame.

[0033] The solution provided by the embodiment of the present invention is applicable to a wide range of window frame installations. Whether it is sealing the upper and lower openings of the window frame or sealing the side of the window frame, the method can be used for sealing. The clamps used are similar to the fasteners commonly used in construction projects. They are directly customized in batches by the factory according to the actual situation on site. The restraint sleeves can be cut and formed on site from electrical sleeves of corresponding specifications according to the actual size of the window frame on site. Moreover, they can be reused after being disassembled after use, saving costs. The finished fixtures can be customized in the factory and installed on site, and the installation is simple. No tools are required for on-site installation and disassembly. Compared with the original need to glue both sides of the window frame, The construction method only requires gluing on the side of the window frame facing the water, and eliminates the need for later excision of the external expansion foam, greatly reducing the workload. At the same time, it avoids the need for high-altitude probes when gluing the window frame facing the water, improving operational safety. The installation and removal of the fixtures used do not damage the window frame and structure, and avoids the large amount of construction waste generated by the excision of the external expansion foam. After the polyurethane foam sealant is filled, the constraints on both sides of the gap prevent the polyurethane foam sealant from expanding outward and can only expand inside the gap, greatly improving the density of the gap between the window frame and the structure. The anti-leakage effect will be better, and the amount of polyurethane foam sealant used will be saved, saving costs. The deficiencies and defects of the existing technology are avoided, the polyurethane foam sealant is constrained, and the density of the gap between the window frame and the structure is guaranteed. The molding effect and anti-leakage effect are good, and there is no impact on the construction of the sealant. The construction method of the present invention is applicable to the installation of most window frames, has the advantages of simple operation, quick assembly and disassembly, repeated use, good quality and effect, no damage to the window frame, saving labor and materials, and saving costs.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A construction method for restraining the expansion of polyurethane foam sealant during window frame installation, characterized in that: include: S1. Design window frame fixture The window frame clamp includes a clamp body in a groove shape, a secondary movable screw rod is threadedly provided on a first side surface of the clamp body, a fixed clamp groove is provided on an inner wall of a second side surface of the clamp body near the groove, and the fixed clamp groove is provided along the axis direction of the clamp body, a main movable screw rod is threadedly provided on the first side surface of the clamp body, the main movable screw rod is opposite to the fixed clamp groove, and a movable clamp groove is provided on the inner end of the main movable screw rod; S2. Make window frame fixture The fixture body is manufactured according to the thickness of the window frame, a threaded hole is opened on the first side of the fixture body, and a secondary movable screw rod is inserted into the threaded hole; the position of the fixed clamping groove is determined on the inner wall of the second side of the fixture body according to the width of the gap between the window frame and the building structure, and a fixed clamping groove is opened; a threaded hole is opened on the first side of the fixture body at a position opposite to the fixed clamping groove, and a main movable screw rod is inserted into the threaded hole; the inner end of the main movable screw rod is provided with a movable clamping groove opposite to the fixed clamping groove; S3, gap filling polyurethane foam sealant According to the length of the gap, cut two restraining sleeves of appropriate length, press the first restraining sleeve against the gap on the water-facing side of the window frame outside the room, set the main spacer cover of the clamp on the window frame and clamp the first restraining sleeve in the fixed clamping groove, rotate the sub-movable screw so that the inner end of the sub-movable screw presses against the window frame, thereby clamping the first restraining sleeve in the gap; fill the gap from the water-repellent side of the window frame indoors with polyurethane foam sealant, and after the filling is completed, press the second restraining sleeve against the gap on the water-repellent side of the window frame indoors, rotate the main movable screw so that the movable clamping groove presses against the second restraining sleeve, and remove the window frame clamp and the restraining sleeve after the polyurethane foam sealant swells and solidifies.

2. The construction method for restraining the expansion of polyurethane foam sealant during window frame installation according to claim 1, characterized in that: The clamp body is made of hard metal, and is round or square in shape. Its width is greater than the thickness of the window frame, and its length is 30mm.

3. The construction method for restraining the expansion of polyurethane foam sealant during window frame installation according to claim 1, characterized in that: The main movable lead screw and the auxiliary movable lead screw are made of hard metal and are both provided with an integrally formed handle.

4. The construction method for restraining the expansion of polyurethane foam sealant during window frame installation according to claim 1, wherein: The main movable screw rod and the movable clamping groove adopt a split structure, or the main movable screw rod and the movable clamping groove are rotatably connected.

5. The construction method for restraining the expansion of polyurethane foam sealant during window frame installation according to claim 1, wherein: The restraining sleeve adopts an electrical sleeve, the diameter of which is determined according to the width of the gap and the length is determined according to the length / width of the window frame.

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