Flexible sealing injection process for modifying old double-layer vacuum glass window

Abstract

The invention relates to the technical field of building door and window reconstruction, in particular to a flexible sealing injection process for reconstruction of a double-layer vacuum glass old window, and aims to solve the problems of high reconstruction difficulty, high cost and poor reconstruction effect after sealing failure of an existing double-layer vacuum glass old window. According to the technology, efficient and reliable sealing transformation of the old window is achieved through the unique steps of pretreatment, flexible sealing material configuration, precise injection, curing and the like, the technology has the advantages of being easy and convenient to operate, excellent in sealing performance and high in adaptability, the service life of the double-layer vacuum glass old window can be remarkably prolonged, and the transformation cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building door and window renovation, and particularly relates to a flexible sealing injection process for old double-layer vacuum glass window renovation. BACKGROUND

[0002] The double-layer vacuum glass has been widely applied in the field of building due to its excellent heat insulation and sound insulation performance. However, with the increase of use time, the sealing structure of the old double-layer vacuum glass window is prone to aging and cracking, which leads to the failure of the vacuum layer and the loss of the original performance advantage. At present, for the renovation of the old double-layer vacuum glass window, the whole glass replacement method is usually adopted. This method not only has high cost, but also has a long construction period, which will greatly affect the normal life of residents. SUMMARY

[0003] In view of the above problems, the flexible sealing injection process for old double-layer vacuum glass window renovation provided by the present application effectively solves the problem of the renovation of the old double-layer vacuum glass window, which usually adopts the whole glass replacement method. This method not only has high cost, but also has a long construction period, which will greatly affect the normal life of residents.

[0004] To achieve the above purpose, the present application adopts the following technical scheme: A flexible sealing injection process for old double-layer vacuum glass window renovation, comprising the following steps: Step 1: Old window pretreatment Surface cleaning: using a special glass cleaner to clean the surface and sealing edge of the double-layer vacuum glass, removing dust, oil stains and other impurities on the surface, and wiping the glass surface dry with a clean cloth after cleaning; Opening the injection channel: using a vacuum chuck to fix and adsorb the frame on the glass, initially inserting a micro-drill into the edge sealing rubber strip, and controlling the micro-drill to rotate while moving around the glass edge, to open a spiral injection channel in the edge sealing rubber strip; Step 2: Flexible sealing material preparation Raw material preparation: according to the weight fraction, the following raw materials are prepared: polyurethane elastomer 40-60 parts, epoxy resin 10-20 parts, nano calcium carbonate 5-10 parts, silane coupling agent 2-5 parts, plasticizer 3-8 parts, curing agent 5-10 parts, and antioxidant 1-3 parts; Mixing and stirring: put the polyurethane elastomer, epoxy resin, nano calcium carbonate, silane coupling agent, plasticizer and antioxidant into a stirring device, stir for 20-30 minutes under the condition of 300-500 r / min of stirring speed, then add the curing agent, and continue to stir for 5-10 minutes to obtain a uniform flexible sealing material; Step three: flexible sealing material injection Injection equipment preparation: select an injection gun with a precision metering device, load the prepared flexible sealing material into the barrel of the injection gun, and debug the injection gun; Injection operation: the nozzle of the injection gun is opposite to the slit of the injection channel, the nozzle is at an angle of 45°-60° with the glass surface, the push rod of the injection gun is slowly pushed, and the flexible sealing material is uniformly injected into the gap in a segmented injection manner; Secondary filling: after the first injection is completed, wait for 5-10 minutes, check the gap, and if there are unfilled parts, perform secondary filling; Step four: curing treatment Preliminary curing: let the flexible sealing material in the injection gap stand for 2-4 hours at room temperature 20-25℃; Heating curing: place the preliminarily cured glass in a constant temperature heating device, and heat for 3-5 hours at a temperature of 40-50℃; Step five: subsequent treatment Surface finishing: after the sealing material is completely cured, use a sharp blade to remove the excess sealing material that has overflowed the gap, so that the glass surface remains flat and smooth; The first support plate is fixedly installed in the middle of the frame, two ends of the first support plate are respectively provided with second support plates fixedly connected with the frame, the suction cup is arranged on the second support plate, a micro motor is installed on the first support plate, an output end of the micro motor is fixedly connected with a rotating rod, a sliding groove is formed in one end of the rotating rod, a rotating column is slidably connected in the sliding groove, the upper end of the rotating column is rotatably connected with a sliding block in limiting sliding connection with the upper end surface of the rotating rod, a fixed block is fixedly connected with one end of the rotating column, a spring is arranged between the fixed block and the sliding block, a straight gear is fixedly connected with the lower end of the rotating column, a straight rack is fixedly installed on the side wall of the frame and engaged with the straight gear, and an installation biasing rod is also fixedly connected with the lower end of the rotating column. One end of the installation biasing rod is arranged with the micro drill at a position different from the rotating rod.

[0005] The special glass cleaner in step one adopts a neutral glass cleaner.

[0006] The stirring equipment in step two is a stirring device capable of achieving a rotating speed of 300-500r / min.

[0007] The injection gun in step three can stably and uniformly extrude the sealing material. The constant temperature heating device in step four can keep the temperature uniform and stable. Compared with the prior art, the beneficial effects of the present application are: 1. When the spur gear rotates against the edge of the frame, the spur gear rotates because the frame edge is equipped with a spur rack that meshes with the spur gear. The spur gear drives the mounting rod to rotate, and the mounting rod drives the micro-drill to rotate in a circle. In conjunction with the movement of the edge, a spiral injection channel can be formed on the sealing strip at the edge of the glass. The injection channel is continuous and uniform, which can effectively improve the fullness of the injection channel, improve the sealing performance, and is simple to operate and low in cost. 2. The process steps are clear, the required equipment is simple, and it is easy for construction personnel to master and operate, which can greatly shorten the construction cycle; the flexible sealing material has good elasticity and sealing properties, which can effectively prevent air and water vapor from entering the vacuum layer, ensuring the heat insulation and sound insulation performance of the double-layer vacuum glass. Attached Figure Description

[0008] Figure 1 This is a first isometric view of a flexible sealing injection process for the renovation of old double-layer vacuum glass windows according to the present invention. Figure 2 This is a second isometric view of a flexible sealing injection process for the renovation of old double-layer vacuum glass windows according to the present invention. Figure 3 This is a schematic diagram of the rotating rod in a flexible sealing injection process for the renovation of old double-layer vacuum glass windows according to the present invention. Figure 4 This is a schematic diagram of the second structure of the installation rod for a flexible sealing injection process for the renovation of old double-layer vacuum glass windows according to the present invention. In the diagram: 1. Frame, 2. First support plate, 3. Second support plate, 4. Spur rack, 5. Suction cup, 6. Rotating rod, 7. Slider, 8. Spring, 9. Fixing block, 10. Micro motor, 11. Mounting rod, 12. Micro drill, 13. Spur gear, 14. Rotating column, 15. Slide groove. Detailed Implementation

[0009] like Figures 1-4 As shown, a flexible sealing injection process for the renovation of old double-glazed vacuum windows includes the following steps: Step 1: Pre-treatment of old windows Surface cleaning: Use a special glass cleaner to clean the surface and sealing edges of the double-walled vacuum glass to remove dust, oil and other impurities. After cleaning, wipe the glass surface dry with a clean cloth. Professional glass cleaners are neutral glass cleaners with a pH value close to neutral (between 6 and 8). They can effectively clean without corroding the glass surface or affecting the bonding strength between the flexible sealing material and the glass. Open injection channel: use vacuum chuck 5 to fix and adsorb frame 1 on glass, initially insert micro drill 12 into edge sealant strip, control micro drill 12 to rotate while moving around the edge of glass, open spiral injection channel in edge sealant strip, vacuum chuck 5 can fix frame 1 on glass without damage, micro drill 12 rotates while moving along the edge of glass in the sealant strip, tearing the sealant strip into a spiral injection channel.

[0010] Step two: flexible sealing material configuration Raw material preparation: according to the weight fraction, prepare the following raw materials: polyurethane elastomer 40-60 parts, epoxy resin 10-20 parts, nano calcium carbonate 5-10 parts, silane coupling agent 2-5 parts, plasticizer 3-8 parts, curing agent 5-10 parts, antioxidant 1-3 parts, polyurethane elastomer 40-60 parts as the main base material, which can give the sealing material good elasticity and flexibility, so that it can adapt to the thermal expansion and contraction of glass due to temperature changes, avoid cracking of the sealing layer; epoxy resin 10-20 parts can enhance the adhesion and structural strength of the material, ensure the close combination of the sealing material and the glass surface, and improve the stability of the sealing; nano calcium carbonate 5-10 parts can improve the hardness and wear resistance of the material, prolong the service life of the sealing material; silane coupling agent 2-5 parts can improve the interface bonding between inorganic fillers and organic base materials, and enhance the overall performance of the material; plasticizer 3-8 parts can increase the plasticity and ductility of the material, facilitating injection operation; curing agent 5-10 parts can promote the curing reaction of the sealing material, forming a stable sealing structure; antioxidant 1-3 parts can delay the aging speed of the material, ensuring the long-term stability of the sealing effect, through such a proportioning, the synergistic effect of each raw material makes the prepared flexible sealing material have excellent elasticity, sealing property, adhesion, aging resistance and other properties, perfectly meets the sealing reconstruction needs of double-layer vacuum glass old windows, effectively solves the sealing failure problem; Mixing and stirring: Put the polyurethane elastomer, epoxy resin, nano calcium carbonate, silane coupling agent, plasticizer and antioxidant into the stirring equipment, stir for 20-30 minutes at a speed of 300-500 r / min, then add the curing agent and continue to stir for 5-10 minutes to obtain a uniform flexible sealing material. The combination of stirring speed and time in this stage can ensure that the organic matrix such as polyurethane elastomer and epoxy resin and inorganic fillers such as nano calcium carbonate are in full contact and dispersion. On the one hand, it can avoid uneven mixing of raw materials due to low stirring speed, which may cause local aggregation of components. On the other hand, it can prevent the system from introducing too many bubbles due to high stirring speed, which may affect the density of the sealing material. The stirring time of 20-30 minutes is sufficient to allow the components to be preliminarily combined at the molecular level, laying a uniform foundation for subsequent reaction with the curing agent. After adding the curing agent, continue to stir for 5-10 minutes. The reaction between the curing agent and the matrix is relatively rapid. A shorter stirring time can ensure that the curing agent is uniformly dispersed in the system while avoiding premature curing due to prolonged stirring, preventing the material from partially curing and reducing flowability before injection, and ensuring that the sealing material has appropriate viscosity during the injection stage to facilitate smooth injection and full filling of the gap. Step three: injection of flexible sealing material Preparation of injection equipment: Select an injection gun with a precision metering device, load the prepared flexible sealing material into the barrel of the injection gun, and debug the injection gun. Injection operation: The gun mouth of the injection gun is directed at the gap of the injection channel, the gun mouth is at an angle of 45°-60° with the glass surface, the push rod of the injection gun is slowly pushed, and the flexible sealing material is uniformly injected into the gap in a segmented injection manner. From the perspective of filling effect, the angle of 45°-60° can make the sealing material enter the gap with appropriate impact force and flow direction, which can more fully fill the corners inside the gap, especially for some gap parts with small turns or depressions. The flowability of the material at this angle can more easily cover these areas, avoiding the occurrence of filling dead angles and providing protection for the subsequent sealing performance. Secondary filling: After the first injection is completed, wait for 5-10 minutes and check the gap. If there are parts that are not filled, perform secondary filling. Step four: curing treatment Preliminary curing: At room temperature of 20-25℃, let the flexible sealing material in the injection gap stand for 2-4 hours. The curing agent in the flexible sealing material will slowly react with the matrix at room temperature. After standing for 2-4 hours, the material gradually loses its flowability, forms a preliminary shape, and is fixed in the gap, avoiding deformation of the sealing structure and uneven filling due to movement or flow during subsequent heating and curing. Heat curing: Place the pre-cured glass in a constant temperature heating device and heat it at 40-50℃ for 3-5 hours. After pre-curing, although the material has lost its fluidity, the curing reaction has not been fully carried out, and the cross-linking structure between molecules has not reached a stable state. At a temperature of 40-50℃, the reaction between the curing agent and the substrate is more complete, which can promote the formation of a dense and stable three-dimensional network structure, greatly improve the mechanical properties of the sealing material, such as strength and elastic modulus, and ensure that it is not prone to cracking or damage during long-term use. Step 5: Follow-up Processing Surface finishing: After the sealant has fully cured, use a sharp blade to scrape off any excess sealant that has overflowed into the gaps, so that the glass surface remains flat and smooth. In step one, a first support plate 2 is fixedly installed in the middle of the frame 1. A second support plate 3 is fixedly connected to the frame 1 at both ends of the first support plate 2. The suction cup 5 is set on the second support plate 3. A micro motor 10 is installed on the first support plate 2. A rotating rod 6 is fixedly connected to the output end of the micro motor 10. A groove 15 is opened at one end of the rotating rod 6. A rotating column 14 is slidably connected inside the groove 15. A slider 7 is rotatably connected to the upper end of the rotating column 14 and is limited and slidably connected to the upper end face of the rotating rod 6. A fixing block 9 is fixedly connected to one end of the rotating column 14. A spring 8 is set between the fixing block 9 and the slider 7. A spur gear 13 is fixedly connected to the lower end of the rotating column 14. A spur rack 4 that meshes with the spur gear 13 is fixedly installed on the side wall of the frame 1. An installation offset rod 11 is also fixedly connected to the lower end of the rotating column 14. A micro drill 12 is set at one end of the installation offset rod 11 at a location that is not coaxial with the rotating rod 6.

[0011] like Figures 1-4 As shown, the second support plate 3 serves to install and fix the suction cup 5, using the suction cup 5 to fix the frame 1 to the glass. The first support plate 2 is used to install the micro motor 10 and control the operation of the micro motor 10. The micro motor 10 drives the rotating rod 6 to rotate. During the rotation of the rotating rod 6, the spur gear 13 is driven to rotate against the edge of the frame 1. At the same time, the spring 8 at the fixing block 9 applies elastic pressure to the slider 7, ensuring that the spur rack 4 at the lower end of the slider 7 is always in contact with the edge of the frame 1. When the spur gear 13 rotates against the edge of the frame 1, the spur gear 13 rotates because the edge of the frame 1 is equipped with a spur rack 4 that meshes with the spur gear 13. The spur gear 13 drives the mounting rod 11 to rotate, and the mounting rod 11 drives the micro drill 12 to rotate in a circle. With the movement of the edge, a spiral injection channel can be formed on the sealing strip at the edge of the glass. The injection channel is continuous and uniform, which can effectively improve the filling fullness of the injection channel and improve the sealing performance.

[0012] The stirring device in step two is a stirring device capable of achieving a rotation speed of 300-500 r / min.

[0013] The injection gun in step three can stably and uniformly extrude the sealing material. The constant temperature heating device in step four can keep the temperature uniform and stable.

[0014] Although embodiments of the present application have been shown and described, it is to be understood that the application is not limited to these embodiments. Since modifications can be made in these embodiments without departing from the principles and spirit of the application, the scope of the application is defined by the appended claims as well as equivalents thereto.

Claims

1. A flexible seal injection process for retrofitting old, worn out windows with a dual-pane vacuum glass, characterized by, The method comprises the following steps: Step 1: old window pretreatment Surface cleaning: use special glass cleaner to clean the surface and sealing edge of the double-layer vacuum glass, remove the dust, oil stains and other impurities on the surface, and wipe the glass surface dry with a clean cloth after cleaning; Open the injection channel: use the vacuum chuck (5) to fix and adsorb the frame (1) on the glass, initially insert the micro drill (12) into the edge sealant, control the micro drill (12) to rotate while moving around the glass edge, and open the spiral injection channel of the edge sealant; Step 2: flexible sealing material configuration Raw material preparation: according to the weight fraction, prepare the following raw materials: polyurethane elastomer 40-60 parts, epoxy resin 10-20 parts, nano calcium carbonate 5-10 parts, silane coupling agent 2-5 parts, plasticizer 3-8 parts, curing agent 5-10 parts, antioxidant 1-3 parts; Mixing and stirring: put the polyurethane elastomer, epoxy resin, nano calcium carbonate, silane coupling agent, plasticizer and antioxidant into the stirring equipment, stir at a speed of 300-500 r / min for 20-30 minutes, then add the curing agent, continue to stir for 5-10 minutes, and get the uniform flexible sealing material; Step 3: flexible sealing material injection Injection equipment preparation: select an injection gun with precise metering device, fill the prepared flexible sealing material into the barrel of the injection gun, and debug the injection gun; Injection operation: keep the gun mouth of the injection gun at 45°-60° angle with the glass surface, slowly push the push rod of the injection gun, and uniformly inject the flexible sealing material into the gap by using the segmented injection method; Secondary filling: after the first injection is completed, wait for 5-10 minutes, check the gap, and if there are unfilled parts, perform secondary filling; Step 4: curing treatment Preliminary curing: let the flexible sealing material in the injection gap stand for 2-4 hours at room temperature 20-25℃; Heating curing: place the preliminarily cured glass in a constant temperature heating device, and heat for 3-5 hours at a temperature of 40-50℃; Step 5: subsequent treatment Surface finishing: after the sealing material is completely cured, use a sharp blade to remove the excess sealing material overflowing from the gap, so as to keep the glass surface flat and smooth.

2. The flexible seal and inject process for retrofitting old, single-pane windows with dual-pane, vacuum glass according to claim 1, wherein, The frame (1) in step one is fixedly installed with a first support plate (2), both ends of the first support plate (2) are respectively provided with a second support plate (3) fixedly connected with the frame (1), the suction cup (5) is arranged on the second support plate (3), the first support plate (2) is installed with a micro motor (10), the output end of the micro motor (10) is fixedly connected with a rotating rod (6), one end of the rotating rod (6) is provided with a sliding groove (15), the sliding groove (15) is slidably connected with a rotating column (14), the upper end of the rotating column (14) is rotatably connected with a sliding block (7) limitedly and slidably connected with the upper end surface of the rotating rod (6), one end of the rotating column (14) is fixedly connected with a fixed block (9), the fixed block (9) and the sliding block (7) are provided with a spring (8) therebetween, the lower end of the rotating column (14) is fixedly connected with a straight gear (13), the side wall of the frame (1) is fixedly installed with a straight rack (4) engaged with the straight gear (13), the lower end of the rotating column (14) is further fixedly connected with an installation biasing rod (11), one end of the installation biasing rod (11) is provided with the micro drill (12) at a position different from the rotating rod (6).

3. The flexible seal and inject process for retrofitting old, single-pane windows with dual-pane, vacuum glass according to claim 1, wherein, The special glass cleaner in step one is a neutral glass cleaner.

4. The flexible seal and inject process for retrofitting old, single-pane windows with dual-pane, vacuum glass according to claim 1, wherein, The stirring device in step two is a stirring device capable of achieving a rotating speed of 300-500 r / min.

5. The flexible seal and inject process for retrofitting old, single-pane windows with dual-pane, vacuum glass according to claim 1, wherein, The injection gun in step three can stably and uniformly extrude the sealing material.

6. The flexible seal and inject process for retrofitting old, single-pane windows with dual-pane, vacuum glass according to claim 1, wherein, The constant temperature heating device in step four can keep the temperature uniform and stable.

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