CN115555220A - Secondary sealing protection method for vacuum glass - Google Patents
Secondary sealing protection method for vacuum glass Download PDFInfo
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- CN115555220A CN115555220A CN202210331514.XA CN202210331514A CN115555220A CN 115555220 A CN115555220 A CN 115555220A CN 202210331514 A CN202210331514 A CN 202210331514A CN 115555220 A CN115555220 A CN 115555220A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0204—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to the edges of essentially flat articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/08—Joining glass to glass by processes other than fusing with the aid of intervening metal
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
- B05D2203/35—Glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2502/00—Acrylic polymers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/249—Glazing, e.g. vacuum glazing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/22—Glazing, e.g. vaccum glazing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention relates to the field of vacuum glass processing, and discloses a secondary sealing protection method for vacuum glass, which comprises the following steps: step I: placing the sealed vacuum glass on a rotary platform, and enabling the gluing nozzle to be opposite to the sealed metal material; step II: the rotary platform is driven to move linearly relative to the gluing nozzle to finish unilateral gluing; step III: driving the rotary platform to rotate, driving the rotary platform to linearly move relative to the gluing nozzle again to finish the next single-side gluing, and repeating the step until the four sides are glued; step IV: and (5) curing. Aiming at the problem that the existing low-temperature sealing metal material is easy to corrode, secondary sealing is carried out outside the original sealing metal material, protective glue with more stable properties is coated on the periphery of the metal material by using a glue coating mechanism to serve as an anticorrosive layer, and the barrier to external oxygen and water vapor is realized, so that the sealing metal material can be in a stable sealing state for a long time, and the service life of the vacuum glass is prolonged.
Description
Technical Field
The invention relates to the field of vacuum glass processing, in particular to a secondary sealing protection method for vacuum glass.
Background
The current manufacturing process of vacuum glass is classified into two types from sealing materials, the first traditional process selects inorganic materials as sealing media, and the product of the method can cause local annealing of toughened glass due to overhigh sealing temperature requirement; the novel sealing material has flexible metal and can be used as the sealing material of vacuum glass, the sealing material mainly adopts alloy metal as a brazing medium between two layers of glass, and the temperature of the sealing process is relatively low and is about 150-230 ℃ different because the material is selected as the metal material, and compared with the traditional inorganic sealing material, the sealing temperature of glass powder is about 400 ℃, and the sealing temperature can be reduced by 170-250 ℃.
However, in the process of using, it is found that after the metal material is sealed, a part of the sealing material is exposed to the atmosphere, i.e. the outer side surface of the metal material in the middle of the double-layer glass is directly contacted with the air. The metal itself is easy to generate self-corrosion in atmospheric environment, which causes the metal material itself to be damaged, and the metal material generates corrosion micropores in long-term natural environment, and gradually leaks air, which causes the sealing performance of the vacuum glass to be reduced or lost, and influences the service life of the vacuum glass.
Disclosure of Invention
The invention aims to provide a secondary sealing protection method for vacuum glass, which solves the problem that the vacuum glass is easy to leak because a metal material sealed by the vacuum glass in the prior art is easy to corrode.
In order to achieve the purpose, the invention adopts the following technical scheme: a secondary sealing protection method for vacuum glass comprises the following steps:
step I: placing the sealed vacuum glass on a rotary platform, and enabling a gluing nozzle to be opposite to a sealed metal material;
step II: the rotary platform is driven to move linearly relative to the gluing nozzle to finish single-side gluing;
step III: driving the rotary platform to rotate, then driving the rotary platform to linearly move relative to the gluing nozzle again to finish the next single-side gluing, repeating the step until the four sides are glued, and performing speed reduction processing on corners in advance by 1-5 mm;
step IV: and (5) curing.
The principle and the advantages of the scheme are as follows: in this technical scheme, to the easy problem of corroding of current low temperature sealing-in metal material, confirm the solution through the research for carrying out secondary seal outside original sealing-in metal material, utilize the rubber coating mechanism with the more stable protection of nature glue coating at metal material periphery, act as the anticorrosive coating, realize the separation to external oxygen, vapor to ensure that sealing-in metal material can be in stable seal state for a long time. In actual operation, the vacuum glass and the gluing nozzle move relatively to glue four sides of the vacuum glass, specifically, the rotary platform can rotate to switch the gluing side edges, and then the rotary platform is driven to move linearly relative to the gluing nozzle to glue; the rotary platform can also be fixed and fixed, and the gluing nozzle is moved, so that the rotary platform and the gluing nozzle move relatively to finish the gluing operation.
According to the technical scheme, the protective glue is coated outside the sealing metal material to realize secondary sealing, the protective glue can serve as an anticorrosive layer to realize the separation of external oxygen and water vapor, and the metal material is prevented from being corroded due to exposure, so that the sealing effect of the vacuum glass is ensured, and the service life of the vacuum glass is prolonged. In the process of researching and developing the scheme, the key and technical difficulty of ensuring the internal metal material is the gluing uniformity, and through research, the gluing uniformity is mainly influenced by the type of glue and the coating process in a synergistic manner. When the gluing process is determined, a research and development team tries manual spray gun coating, but finds that the same person is difficult to achieve the phenomenon of glue overflow after repeated training, the coating amount is extremely uneven, and the glue cannot be fixed within the curing time. For this reason, a research and development team develops special gluing equipment, and a form of combining a rotary platform with a gluing nozzle is utilized, so that finding the gluing amount and the coating process at a corner after a gluing mode is determined is still a difficult point, and excessive coating amount at the corner causes a glue overflow phenomenon, and too little coating amount causes poor sealing and secondary protection failure. The application adopts the corner coating part to be coated with the speed reduction treatment of 1-5mm in advance, and the right angle is output and then the speed is increased so as to realize better coating effect.
Preferably, as an improvement, in step I, a suction cup is arranged on the top surface of the rotating platform, and the suction cup is communicated with a negative pressure device.
Among this technical scheme, through set up the sucking disc at rotary platform's top, it is fixed to utilize vacuum apparatus to realize the absorption to vacuum glass, guarantees gummed stability.
Preferably, as a modification, in step I, the nozzle diameter of the glue-applying nozzle is 0.2-0.5mm.
In the technical scheme, according to the model of the vacuum glass, the diameter of the nozzle is set to be 0.2-0.5mm, so that the secondary sealing requirements (adaptation of most vacuum glass product gaps) of different vacuum glasses can be met, the adaptation range of the undersize of the nozzle is too small, the excessive size of the nozzle can cause glue overflow, the appearance of the vacuum glass is influenced, and unnecessary waste can be caused.
Preferably, as an improvement, the glue in the step II is an acrylate UV glue, an epoxy sealant, a silicone sealant or a chloroprene sealant, and the viscosity of the glue is 30-3000mpa · s.
In the technical scheme, the acrylate UV adhesive, the epoxy sealant, the silicone sealant and the chloroprene sealant can meet the requirement of secondary sealing, the viscosity of the adhesive has certain influence on the sealing quality, and if the adhesive with the too low viscosity can not be well bonded on the upper part of the vertical surface of the metal due to self weight, the adhesive can not completely cover the metal layer, so that the anti-corrosion effect is achieved; the excessively viscous glue causes clogging of the nozzle during coating, causes interruption of the process, and the like. .
Preferably, as a modification, in step II, the angle of a single rotation of the rotary platform is 90 °.
In the technical scheme, the single rotation angle of the rotary platform is set to be 90 degrees, 360-degree comprehensive gluing can be realized by four times, and the design is reasonable.
Preferably, as a modification, in step II, the linear moving speed of the rotary platform is 10-300mm/s, and the glue coating thickness is in the range of 0.5-1mm.
Among this technical scheme, rotary platform's the main type that needs the adaptation to glue of translation rate, both synergism, different gluey viscosities have certain difference, then required rotary platform's translation rate also can have the difference, and rotary platform moves at the excessive speed and leads to the coating volume not enough, leads to the coating volume too thick slowly.
Preferably, as a modification, in the step IV, the curing manner is ultraviolet curing, sunlight curing, infrared curing or hot air curing, and the curing time is 30 to 120 seconds.
According to the technical scheme, the curing modes can be flexibly selected according to different selections of the used protective glue, and the curing requirements of the protective glue can be met by the aid of the curing modes.
Preferably, as an improvement, the glue nozzle is height-adjustable.
In the technical scheme, the gluing nozzle is set to be of a height-adjustable structure, and the height position of the gluing nozzle can be adjusted in a targeted manner according to the model and size of the secondary sealing vacuum glass, so that the adaptability is improved.
Preferably, as an improvement, the glue is an acrylate UV glue, and the curing mode is ultraviolet curing.
In the technical scheme, the acrylate UV adhesive is matched with an ultraviolet curing mode, and is a better combination verified by practice, so that the curing speed is high, the curing effect is good, and the technology is relatively mature.
Drawings
Fig. 1 is a schematic structural diagram of a secondary sealing and gluing device in an embodiment of the invention.
Detailed Description
The following is a detailed description of the embodiments, but the embodiments of the present invention are not limited thereto. Unless otherwise specified, the technical means used in the following embodiments are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; the materials, reagents and the like used are all commercially available.
Reference numerals in the drawings of the specification include: the device comprises a base 1, a rotary platform 2, a first screw rod 3, a sucker 4, a support frame 5, a gluing nozzle 6, a second screw rod 7, a fixing block 8, a locking nut 9, vacuum glass 10 and a driving motor 11.
Brief summary of the preferred embodiments
A secondary sealing protection method for vacuum glass mainly depends on a secondary sealing gluing device for the vacuum glass, the structure of the secondary sealing gluing device for the vacuum glass is basically as shown in figure 1, and the secondary sealing gluing device for the vacuum glass comprises a base 1, a rotating platform 2 and a gluing mechanism.
The base 1 plays a role of integral support, a first transversely-arranged screw rod 3 is rotationally connected in the base 1, a nut block in threaded connection with the first screw rod 3 is sleeved on the first screw rod 3, and the nut block is connected to the base 1 in a sliding mode. A driving motor 11 is fixed on the base 1 through bolts, the driving motor 11 is a positive and negative motor, and an output shaft of the driving motor 11 is fixed with the end part of the first screw rod 3 through a coupler. The top surface of the base 1 is provided with positioning scale marks (not shown in the figure).
The rotary platform 2 is used for supporting and fixing vacuum glass 10 to be sealed, the bottom of the rotary platform 2 is rotatably connected to the nut block, the suckers 4 are installed at the top of the rotary platform 2, the suckers 4 are communicated with a negative pressure device, the vacuum glass 10 is placed on the suckers 4 during use, and the negative pressure device is started to realize vacuum adsorption. The structure of the rotary platform 2 is the prior art and can rotate for a certain angle under the control of a program.
The rubber coating mechanism sets up on rotary platform 2's right side, and the rubber coating mechanism includes support frame 5 and rubber coating shower nozzle 6, is provided with horizontal spacing groove on rotary platform 2, and support frame 5 lateral sliding connects at spacing inslot, and support frame 5's bottom is provided with spacing hole, rotary platform 2 go up be provided with spacing hole normal degree the mating holes, to spacing hole and the downthehole gag lever post of wearing to establish that can realize support frame 5 now be fixed. The support frame 5 is rotatably connected with a second lead screw 7 which is vertically arranged, the second lead screw 7 is sleeved with a fixed block 8 which is in threaded connection with the second lead screw, the fixed block 8 is vertically connected onto the support frame 5 in a sliding mode, and the end portion of the second lead screw 7 is in threaded connection with a locking nut 9. The gluing nozzle 6 is fixed on the fixing block 8, and the diameter of the nozzle of the gluing nozzle 6 is 0.2-0.5mm.
The method for performing secondary sealing protection on the sealed vacuum glass comprises the following steps:
step I: the vacuum glass 10 to be processed is conveyed to the rotary platform 2 by a manual or mechanical arm, and the position of the vacuum glass 10 is adjusted by positioning the scale marks, so that the center of the vacuum glass 10 coincides with the center of the rotary platform 2. Then, the negative pressure device is started, so that the vacuum suction of the vacuum glass 10 is realized by the suction disc 4, and the fixing effect of the vacuum glass 10 is ensured.
The position of the support frame 5 is adjusted to adjust the distance between the glue spray head 6 and the vacuum glass 10. And then the second screw rod 7 is rotated according to the thickness of the vacuum glass 10 to adjust the height of the gluing nozzle 6, and the position is fixed by a locking nut 9 after the adjustment is finished.
Step II: after the position adjustment is finished, the driving motor 11 is started, the driving motor 11 controls the first screw rod 3 to rotate, and in the process, the nut block axially moves along the first screw rod 3, so that the rotary platform 2 is driven to axially move along the first screw rod 3. In the process that the rotary platform 2 moves relative to the gluing nozzle 6, a layer of protective glue can be coated outside the metal sealing layer of the vacuum glass 10 by using the gluing nozzle 6, and the secondary sealing of the vacuum glass 10 is realized. The linear moving speed of the rotary platform 2 in the embodiment is 10-300mm/s, and the glue coating thickness range is 0.5-1mm; the protective glue is acrylic polyester UV glue, and the viscosity of the glue is 30mpa · s.
Step III: after one side of the vacuum glass 10 is glued, the rotary platform 2 is controlled to rotate 90 degrees (in the prior art), then the driving motor 11 is started again, the other side of the vacuum glass 10 is glued and sealed for the second time, the two-time gluing and sealing of the four sides of the vacuum glass 10 can be realized repeatedly, the coating of the corner is performed with the speed reduction processing of 1-5mm in advance, and the speed is increased after the coating of the corner is performed.
Step IV: and (3) curing, wherein the curing mode in the embodiment is ultraviolet curing, and the curing time is 30-120s.
In the invention, the coated outer corrosion-resistant sealant can be used as an anticorrosive layer of the exposed metal sealing layer, and directly separates the metal sealing layer from water molecules, oxygen, sulfides and the like in the atmospheric environment, so that the metal is prevented from reacting with partial media in the environment, the metal sealing layer is ensured to be in a relatively stable state for a long time, and the sealing effect of the vacuum glass 10 is ensured.
Experimental example: effect of different coating conditions on sealing effectiveness
Examples 1-3 are examples of the present invention, comparative examples 1-8 are comparative examples of the present invention, and each example and comparative example only differ in part of the process selection during the glue application, wherein "yes" in the corner speed reduction means that the vacuum glass corner is subjected to speed reduction treatment in advance by 1-5mm during the glue application, and then speed increase is performed at the corner, and "no" means that the speed reduction treatment is not performed at the corner, and the specific parameter settings of each example and comparative example are detailed in the following table.
TABLE 1
The gluing and sealing effects, the corrosion condition of the inner layer metal material after being used for half a year after being coated with the sealant and the service life of the vacuum glass of the above embodiments and comparative examples are detected, wherein the gluing and sealing effects adopt a visual inspection mode to observe the filling and coating gap effect and confirm whether gluing broken lines, overflow and the like exist; evaluating the corrosion condition of the metal material by a salt spray test accelerated aging method; service life: salt spray test samples under different conditions were subjected to a K value detector to measure heat transfer coefficients, and the results are detailed in table 2.
TABLE 2
| Glue sealing effect | Corrosion of metallic materials | Vacuum glass K value W/square meter K | |
| Example 1 | Is normal | No corrosion | 0.55 |
| Example 2 | Is normal | No corrosion | 0.57 |
| Example 3 | Is normal | No corrosion | 0.54 |
| Comparative example 1 | Breakpoint | Etching of break points | 3.72 |
| Comparative example 2 | Glue overflow | No corrosion | 0.61 |
| Comparative example 3 | Breakpoint | Etching of break points | 3.81 |
| Comparative example 4 | Breakpoint | Etching of break points | 3.65 |
| Comparative example 5 | Breakpoint | Etching of break points | 3.83 |
| Comparative example 6 | Spillage | Corrosion by flash point | 3.66 |
| Comparative example 7 | Breakpoint | Corner corrosion | 1.79 |
| Comparative example 8 | Overflow | Corner corrosion | 2.84 |
The data in table 2 show that the secondary sealing has a good protection effect on the service life of the vacuum glass product, the heat transfer coefficient K value of the product is not affected in a certain range of coating thickness, coating speed and nozzle caliber, but if the coating thickness is too small, the degree of the glue on the surface of the covered metal is not complete, so that the corrosion risk exists locally or locally, the K value is reduced by air leakage, the curing of the over-thick glue is incomplete due to too large coating amount, the product service life is affected by the corrosion points, and the effects on the metal sealing layer in different degrees are generated due to the fact that the glue film is insufficient or too thick under the conditions that the coating speed is too fast or too slow under the same mechanism.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. The secondary sealing protection method for the vacuum glass is characterized by comprising the following steps of:
step I: placing the sealed vacuum glass on a rotary platform, and enabling a gluing nozzle to be opposite to a sealed metal material;
step II: the rotary platform is driven to move linearly relative to the gluing nozzle to finish unilateral gluing;
step III: driving the rotary platform to rotate, then driving the rotary platform to linearly move relative to the gluing nozzle again to finish the next single-side gluing, repeating the step until the four sides are glued, and performing speed reduction processing on corners in advance by 1-5 mm;
step IV: and (5) curing.
2. The method for protecting the secondary seal of the vacuum glass according to claim 1, wherein: and in the step I, a sucker is arranged on the top surface of the rotating platform and is communicated with a negative pressure device.
3. The method for protecting the secondary sealing of the vacuum glass according to claim 2, wherein: in the step I, the diameter of a nozzle of the gluing nozzle is 0.2-0.5mm.
4. The method for protecting the secondary seal of the vacuum glass according to claim 3, wherein: the glue in the step II is acrylate UV glue, epoxy sealant, silicone sealant or chloroprene sealant, and the viscosity of the glue is 30-3000mpa · s.
5. The method for protecting the secondary seal of the vacuum glass according to claim 4, wherein: in step III, the angle of a single rotation of the rotary platform is 90 degrees.
6. The method for protecting the secondary sealing of the vacuum glass according to claim 5, wherein: in the step II, the linear moving speed of the rotary platform is 10-300mm/s, and the glue coating thickness range is 0.5-1mm.
7. The method for protecting the secondary seal of the vacuum glass according to claim 6, wherein: in the step IV, the curing mode is ultraviolet curing, sunlight curing, infrared curing or hot air curing, and the curing time is 30-120s.
8. The method for protecting the secondary seal of the vacuum glass according to claim 7, wherein: the height of the gluing nozzle can be adjusted.
9. The method for protecting the secondary seal of the vacuum glass according to claim 8, wherein: the adhesive is acrylate UV adhesive, and the curing mode is ultraviolet curing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210331514.XA CN115555220A (en) | 2022-03-30 | 2022-03-30 | Secondary sealing protection method for vacuum glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210331514.XA CN115555220A (en) | 2022-03-30 | 2022-03-30 | Secondary sealing protection method for vacuum glass |
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| CN115555220A true CN115555220A (en) | 2023-01-03 |
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| CN212759382U (en) * | 2020-06-29 | 2021-03-23 | 湖北鸿创科技股份有限公司 | Edge gluing device for original glass on liquid crystal glass production line |
| CN112827755A (en) * | 2021-01-07 | 2021-05-25 | 李超 | Gluing and sealing process for manufacturing glass doors and windows |
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| CN111722474A (en) * | 2020-06-24 | 2020-09-29 | 沈阳芯源微电子设备股份有限公司 | Method for improving square sheet edge gluing wind marks |
| CN212759382U (en) * | 2020-06-29 | 2021-03-23 | 湖北鸿创科技股份有限公司 | Edge gluing device for original glass on liquid crystal glass production line |
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