Multi-angle corner assembly processing technology for broken bridge aluminum door and window

Abstract

The present application relates to the field of broken bridge aluminum door and window processing technology, and discloses a broken bridge aluminum door and window multi-angle corner assembling processing technology.The profile is cut according to the design angle, the cutting error is strictly controlled, and an appropriate gap is reserved;after the angle is adjusted by the split arc sliding lock tooth corner code, the profile is embedded into the inner cavity of the profile to be locked and clamped to suppress the angle rebound;then, the adjustable clamp is used, low-frequency stable voltage pre-pressing is matched with high-frequency micro-vibration close contact to realize seamless connection of the broken section;the gap is cleaned and the interface agent is brushed, two-way layered glue injection is adopted, high-hardness epoxy structural glue is injected into the inner cavity to bear the weight, and modified silane glue is injected on the outside to seal;after the glue body is initially set, the stainless steel through pin is symmetrically punched to build a clamping, riveting and bonding triple self-locking structure;after normal temperature setting and low temperature constant temperature deep curing, the finished product is finally trimmed, polished and detected, and the angle error of the finished product is less than or equal to ±0.1°.The present application is suitable for multi-angle corner assembling, the corner assembling structure is firm and has good sealing performance, and effectively solves the problems of angle deviation and gap water leakage.

Description

Technical Field

[0001] This invention relates to the field of thermally broken aluminum window and door processing technology, specifically to the multi-angle corner assembly processing technology for thermally broken aluminum windows and doors. Background Technology

[0002] Thermally broken aluminum windows and doors are a new type of energy-saving window and door that uses "thermal breakage" technology. Its core structure involves embedding a thermally insulating strip with extremely low thermal conductivity within the aluminum alloy profile, effectively blocking the "cold-heat bridge" path of heat conduction through the metal profile. This is then combined with insulated glass, hardware, and sealing strips. While retaining the aesthetic appeal, sturdiness, and corrosion resistance of aluminum alloy, this product significantly improves thermal insulation, sound insulation, noise reduction, waterproofing, and dustproofing, making it a mainstream product in the current building window and door market.

[0003] The corner assembly process for thermally broken aluminum windows and doors is a core step that determines the strength, sealing, and stability of the corners. Traditional corner assembly processes mostly use a fixed 45° corner structure, which is only suitable for standard right-angle rectangular window frames and lacks angle self-adjustment capability. It cannot process irregular angles such as acute angles, obtuse angles, and rounded transition angles. The few universal corner assembly structures on the market are mostly simple hinged snap-fit ​​types, with low positioning accuracy and no self-locking structure. After processing, problems such as angle rebound and displacement are prone to occur, resulting in a low yield rate. In order to achieve multi-angle corner assembly, high-precision multi-angle corner assembly equipment is required. However, such equipment has a complex structure, high cost, and requires customized molds, so it is not suitable for small and medium-sized processing plants. Summary of the Invention

[0004] The present invention aims to provide a multi-angle corner assembly processing technology for thermally broken aluminum windows and doors, so as to solve the problem that the current processing of multi-angle corner assembly for thermally broken aluminum windows and doors requires the use of multi-angle corner assembly equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a multi-angle corner assembly processing technology for thermally broken aluminum windows and doors, comprising the following steps: S1. Cut the thermally broken aluminum profile according to the design angle, with a cutting size error of ≤0.1mm. Leave a 0.3~0.5mm fitting gap at the inner cavity of the thermally broken aluminum profile and the corner bracket fitting position. S2 uses a split arc-shaped sliding locking tooth angle code. Loosen the locking bolt of the locking tooth angle code, rotate the angle code according to the processing angle, so that the angle of the angle code is consistent with the target angle, and embed the adjusted locking tooth angle code into the inner cavity of the two profiles to be spliced. After fine-tuning the flatness of the profile splicing, tighten the locking bolt. The mechanical self-locking is achieved by the engagement of the angle code teeth with the inner cavity of the profile to prevent angle rebound and displacement. S3. Fix the pre-assembled profile components to the adjustable angle clamp and use a composite process of low-frequency stable pressure pre-pressing combined with high-frequency micro-vibration sealing. First, use a static pre-pressing pressure of 0.2~0.8MPa for 2~10s to achieve initial profile bonding. Then, use a vibration frequency of 30~40Hz and an amplitude of 0.1~0.3mm for 8~12s to smooth out the micro gaps on the profile cross-section, and complete the seamless bonding of the profile and the complete engagement of the corner bracket. S4. Remove dust from the joints of the profiles, removing internal aluminum shavings and dust impurities; apply an interface treatment agent evenly to the joints on the outside of the profiles. S5 employs a dual-path independent injection system for layered injection. The inner main load-bearing cavity is injected with high-hardness two-component epoxy structural adhesive at a pressure of 0.25~0.35MPa to bear the main load at the corners. The outer sealing secondary cavity is injected with high-elasticity modified silane sealant at a pressure of 0.15~0.25MPa to fill the tiny irregular gaps at multiple angles. The injection process is uniform and bubble-free. After injection, the sealant is allowed to stand for 2~10 minutes to allow the adhesive to initially set. S6. After the colloid is initially shaped, according to the angle and size of the profile, 2-3 sets of stainless steel through pins are symmetrically driven into the corner positions. The pins penetrate the profile wall and the corner bracket body to form a triple self-locking structure of locking teeth, pin riveting, and colloid bonding. S7. Transfer the profile assembly processed in step S6 to the curing area. First, let it stand at room temperature for 30 minutes to complete the surface shaping and locking. Then, use 45℃ low temperature constant temperature curing for 2 hours to achieve deep and uniform curing of the colloid and eliminate residual stress inside the colloid. S8. After the colloid has fully cured, clean the excess colloid and aluminum shavings from the surface of the profile, and finely grind and trim the joints. Check that the angle error of the assembled corners is ≤±0.1°, and randomly check the tightness, flatness and sealing of the corners. There should be no looseness or potential for water leakage or air leakage.

[0006] Preferably, as an improvement, the locking tooth bracket includes a semicircular piece and two hinged wing plates. The semicircular piece is hinged to the same side of the two wing plates. The semicircular piece is provided with an arc-shaped groove, which is parallel to the curved end of the semicircular piece. The groove wall of the arc-shaped groove is provided with a plurality of teeth 1, the tooth pitch of which is 0.2mm. Both wing plates are provided with a plurality of teeth 2, which are located in the arc-shaped groove. The plurality of teeth 2 mesh with teeth 1 to fix the two wing plates.

[0007] Preferably, as an improvement, the semicircular piece is made of spring steel.

[0008] Preferably, as an improvement, in step S3, the profile is first statically pre-pressed with a pressure of 0.3MPa for 3s to achieve initial bonding, and then vibrated with a vibration frequency of 35Hz and an amplitude of 0.1mm for 10s.

[0009] Preferably, as an improvement, in step S5, for 1.4mm thin-walled profiles, the glue injection flow rate is reduced by 10%~15%; for 2.0mm thick-walled profiles, the standard glue injection flow rate is maintained to ensure that the cavity of profiles with different wall thicknesses is fully filled without glue overflow or profile extrusion deformation.

[0010] The beneficial effects of this plan are: 1. This solution is highly adaptable to all angles and has strong versatility: The invention features an original arc-shaped locking tooth sliding self-locking structure, which can accurately adapt to the processing of any acute angle, obtuse angle, right angle, and arc transition angle from 0° to 180° without changing the mold. It completely solves the technical limitation of traditional processes that can only process 45° standard angles and is compatible with the processing of all types of thermally broken aluminum special-shaped doors and windows.

[0011] 2. The dual-cavity gradient layered adhesive injection process achieves functional zoning of structural stress and sealing and seepage prevention. Combined with a triple self-locking structure, the corner shear strength is ≥95N / mm², and it can withstand 12-level wind pressure without deformation. The high-elasticity sealant is adapted to the thermal expansion and contraction of aluminum materials, completely solving the problems of water seepage, air leakage, and delamination at multi-angle splices, and greatly improving the sealing durability.

[0012] 3. This invention does not require customized large-scale equipment. It can be put into production with only simple modifications to general door and window processing equipment. The process is standardized and the parameters are controllable. It is suitable for mass production in large, medium and small door and window processing plants. It is different from existing niche laboratory innovation processes and has market promotion value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the locking tooth angle code in the multi-angle corner assembly process of thermally broken aluminum doors and windows of the present invention.

[0014] Figure 2 for Figure 1 A magnified view of A in the middle.

[0015] The reference numerals in the accompanying drawings include: wing plate 1, semi-circular piece 2, arc groove 3, tooth one 4, tooth two 5. Detailed Implementation

[0016] The following detailed description illustrates the specific implementation method: Example 1 The multi-angle corner assembly process for thermally broken aluminum windows and doors includes the following steps: S1. Cut the thermally broken aluminum profile according to the design angle, with a cutting size error of ≤0.1mm. Leave a 0.3mm fitting gap at the inner cavity of the thermally broken aluminum profile and the corner bracket fitting position. S2 uses a split arc-shaped sliding locking tooth angle code. Loosen the locking bolt of the locking tooth angle code, rotate the angle code according to the processing angle, so that the angle of the angle code is consistent with the target angle, and embed the adjusted locking tooth angle code into the inner cavity of the two profiles to be spliced. After fine-tuning the flatness of the profile splicing, tighten the locking bolt. The mechanical self-locking is achieved by the engagement of the angle code teeth with the inner cavity of the profile to prevent angle rebound and displacement. S3: Fix the pre-assembled profile components to the adjustable angle clamp, and use a composite process of low-frequency stable pressure pre-pressing combined with high-frequency micro-vibration sealing; first, use a static pre-pressing pressure of 0.3MPa for 3s to achieve initial profile bonding, and then use a vibration frequency of 35Hz and an amplitude of 0.1mm for 10s to smooth out the micro gaps on the profile cross-section, thus completing the seamless bonding of the profile and the complete interlocking of the corner bracket; S4. Remove dust from the joints of the profiles, removing internal aluminum shavings and dust impurities; apply an interface treatment agent evenly to the joints on the outside of the profiles. The S5 employs a dual-path independent injection system for layered injection. The inner main load-bearing cavity is injected with high-hardness two-component epoxy structural adhesive at 0.25 MPa pressure to bear the main load at the corners. The outer sealing secondary cavity is injected with highly elastic modified silane sealant at 0.15 MPa pressure to fill the tiny, irregularly shaped gaps at multiple angles. The injection process is uniform and bubble-free. After injection, the sealant is allowed to stand for 2 minutes to allow for initial setting. For 1.4mm thin-walled profiles, the injection flow rate is reduced by 10%~15%; for 2.0mm thick-walled profiles, the standard injection flow rate is maintained to ensure full filling of the cavities for profiles of different wall thicknesses without sealant overflow or profile deformation due to compression.

[0017] S6. After the colloid is initially shaped, according to the angle and size of the profile, two sets of stainless steel through pins are symmetrically driven into the corner positions. The pins penetrate the profile wall and the corner bracket body to form a triple self-locking structure of locking teeth, pin riveting, and colloid bonding. S7. Transfer the profile assembly processed in step S6 to the curing area. First, let it stand at room temperature for 30 minutes to complete the surface shaping and locking. Then, use 45℃ low temperature constant temperature curing for 2 hours to achieve deep and uniform curing of the colloid and eliminate residual stress inside the colloid. S8. After the colloid has fully cured, clean the excess colloid and aluminum shavings from the surface of the profile, and finely grind and trim the joints. Check that the angle error of the assembled corners is ≤±0.1°, and randomly check the tightness, flatness and sealing of the corners. There should be no looseness or potential for water leakage or air leakage.

[0018] Example 2 The multi-angle corner assembly process for thermally broken aluminum windows and doors includes the following steps: S1. Cut the thermally broken aluminum profile according to the design angle, with a cutting size error of ≤0.1mm. Leave a 0.5mm fitting gap at the inner cavity of the thermally broken aluminum profile and the corner bracket fitting position. S2 uses a split arc-shaped sliding locking tooth angle code. Loosen the locking bolt of the locking tooth angle code, rotate the angle code according to the processing angle, so that the angle of the angle code is consistent with the target angle, and embed the adjusted locking tooth angle code into the inner cavity of the two profiles to be spliced. After fine-tuning the flatness of the profile splicing, tighten the locking bolt. The mechanical self-locking is achieved by the engagement of the angle code teeth with the inner cavity of the profile to prevent angle rebound and displacement. S3. The pre-assembled profile components are fixed to the adjustable angle clamp. A composite process of low-frequency stable pressure pre-pressing combined with high-frequency micro-vibration sealing is adopted. First, the profiles are initially bonded by static pre-pressing with a pressure of 0.8MPa for 10s. Then, the profiles are vibrated with a vibration frequency of 40Hz and an amplitude of 0.3mm for 12s to smooth out the micro gaps on the profile cross-section, thus completing the seamless bonding of the profiles and the complete interlocking of the corner brackets. S4. Remove dust from the joints of the profiles, removing internal aluminum shavings and dust impurities; apply an interface treatment agent evenly to the joints on the outside of the profiles. The S5 employs a dual-path independent injection system for layered injection. The inner main load-bearing cavity is injected with high-hardness two-component epoxy structural adhesive at 0.35 MPa pressure to bear the main load at the corners. The outer sealing secondary cavity is injected with highly elastic modified silane sealant at 0.25 MPa pressure to fill the tiny, irregularly shaped gaps at multiple angles. The injection process is uniform and bubble-free. After injection, the sealant is allowed to stand for 10 minutes to allow for initial setting. For 1.4mm thin-walled profiles, the injection flow rate is reduced by 10%~15%; for 2.0mm thick-walled profiles, the standard injection flow rate is maintained to ensure full filling of the cavities for profiles of different wall thicknesses without sealant overflow or profile deformation due to compression.

[0019] S6. After the colloid is initially shaped, according to the angle and size of the profile, three sets of stainless steel through pins are symmetrically driven into the corner positions. The pins penetrate the profile wall and the corner bracket body to form a triple self-locking structure of locking teeth, pin riveting, and colloid bonding. S7. Transfer the profile assembly processed in step S6 to the curing area. First, let it stand at room temperature for 30 minutes to complete the surface shaping and locking. Then, use 45℃ low temperature constant temperature curing for 2 hours to achieve deep and uniform curing of the colloid and eliminate residual stress inside the colloid. S8. After the colloid has fully cured, clean the excess colloid and aluminum shavings from the surface of the profile, and finely grind and trim the joints. Check that the angle error of the assembled corners is ≤±0.1°, and randomly check the tightness, flatness and sealing of the corners. There should be no looseness or potential for water leakage or air leakage.

[0020] Example 3 The multi-angle corner assembly process for thermally broken aluminum windows and doors includes the following steps: S1. Cut the thermally broken aluminum profile according to the design angle, with a cutting size error of ≤0.1mm. Leave a 0.4mm fitting gap at the inner cavity of the thermally broken aluminum profile and the corner bracket fitting position. S2 uses a split arc-shaped sliding locking tooth angle code. Loosen the locking bolt of the locking tooth angle code, rotate the angle code according to the processing angle, so that the angle of the angle code is consistent with the target angle, and embed the adjusted locking tooth angle code into the inner cavity of the two profiles to be spliced. After fine-tuning the flatness of the profile splicing, tighten the locking bolt. The mechanical self-locking is achieved by the engagement of the angle code teeth with the inner cavity of the profile to prevent angle rebound and displacement. S3. The pre-assembled profile components are fixed to the adjustable angle clamp. A composite process of low-frequency stable pressure pre-pressing combined with high-frequency micro-vibration sealing is adopted. First, the profiles are initially bonded by static pre-pressing with a pressure of 0.6MPa for 6s. Then, the profiles are vibrated with a vibration frequency of 35Hz and an amplitude of 0.2mm for 10s to smooth out the micro gaps on the profile cross-section, thus completing the seamless bonding of the profiles and the complete interlocking of the corner brackets. S4. Remove dust from the joints of the profiles, removing internal aluminum shavings and dust impurities; apply an interface treatment agent evenly to the joints on the outside of the profiles. The S5 employs a dual-path independent injection system for layered injection. The inner main load-bearing cavity is injected with high-hardness two-component epoxy structural adhesive at a pressure of 0.30 MPa to bear the main load at the corners. The outer sealing secondary cavity is injected with high-elasticity modified silane sealant at a pressure of 0.20 MPa to fill the tiny irregular gaps at multiple angles. The injection process is uniform and bubble-free. After injection, the sealant is allowed to stand for 7 minutes to allow the sealant to initially set. For 1.4mm thin-walled profiles, the injection flow rate is reduced by 10%~15%. For 2.0mm thick-walled profiles, the standard injection flow rate is maintained to ensure that the cavities of profiles with different wall thicknesses are fully filled without sealant overflow or profile extrusion deformation.

[0021] S6. After the colloid is initially shaped, according to the angle and size of the profile, two sets of stainless steel through pins are symmetrically driven into the corner positions. The pins penetrate the profile wall and the corner bracket body to form a triple self-locking structure of locking teeth, pin riveting, and colloid bonding. S7. Transfer the profile assembly processed in step S6 to the curing area. First, let it stand at room temperature for 30 minutes to complete the surface shaping and locking. Then, use 45℃ low temperature constant temperature curing for 2 hours to achieve deep and uniform curing of the colloid and eliminate residual stress inside the colloid. S8. After the colloid has fully cured, clean the excess colloid and aluminum shavings from the surface of the profile, and finely grind and trim the joints. Check that the angle error of the assembled corners is ≤±0.1°, and randomly check the tightness, flatness and sealing of the corners. There should be no looseness or potential for water leakage or air leakage.

[0022] The locking tooth angle codes in Examples 1 to 3 are attached. Figure 1 and attached Figure 2As shown, it includes: a semicircular plate 2 and two hinged wing plates 1. The semicircular plate 2 is made of spring steel and is hinged on the same side of the two wing plates 1. The semicircular plate 2 is provided with an arc-shaped groove 3, which is parallel to the curved end of the semicircular plate 2. The groove wall of the arc-shaped groove 3 is provided with several teeth 4, and the tooth pitch of the teeth 4 is 0.2mm. Both wing plates 1 are provided with multiple teeth 2 5, and the teeth 2 5 are located in the arc-shaped groove 3. The multiple teeth 2 5 mesh with the teeth 1 4 to fix the two wing plates 1.

[0023] In use, move the semicircular piece 2 to create a gap between it and the two wing plates 1. At this time, tooth 2 5 disengages from tooth 1 4, and the two wing plates 1 are released from fixation. Then rotate the two wing plates 1 to the required angle, and then release the semicircular piece 2. The semicircular piece 2 returns to its initial state under the elastic force of its own spring steel, and tooth 2 5 re-engages with tooth 1 4 to fix the two wing plates 1.

[0024] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A multi-angle corner assembly processing technology for thermally broken aluminum doors and windows, characterized in that, Includes the following steps: S1. Cut the thermally broken aluminum profile according to the design angle, with a cutting size error of ≤0.1mm. Leave a 0.3~0.5mm fitting gap at the inner cavity of the thermally broken aluminum profile and the corner bracket fitting position. S2 uses a split arc-shaped sliding locking tooth angle code. Loosen the locking bolt of the locking tooth angle code, rotate the angle code according to the processing angle, so that the angle of the angle code is consistent with the target angle, and embed the adjusted locking tooth angle code into the inner cavity of the two profiles to be spliced. After fine-tuning the flatness of the profile splicing, tighten the locking bolt. The mechanical self-locking is achieved by the engagement of the angle code teeth with the inner cavity of the profile to prevent angle rebound and displacement. S3. Fix the pre-assembled profile components to the adjustable angle clamp and use a composite process of low-frequency stable pressure pre-pressing combined with high-frequency micro-vibration sealing. First, use a static pre-pressing pressure of 0.2~0.8MPa for 2~10s to achieve initial profile bonding. Then, use a vibration frequency of 30~40Hz and an amplitude of 0.1~0.3mm for 8~12s to smooth out the micro gaps on the profile cross-section, and complete the seamless bonding of the profile and the complete engagement of the corner bracket. S4. Remove dust from the joints of the profiles, removing internal aluminum shavings and dust impurities; apply an interface treatment agent evenly to the joints on the outside of the profiles. S5 employs a dual-path independent injection system for layered injection. The inner main load-bearing cavity is injected with high-hardness two-component epoxy structural adhesive at a pressure of 0.25~0.35MPa to bear the main load at the corners. The outer sealing secondary cavity is injected with high-elasticity modified silane sealant at a pressure of 0.15~0.25MPa to fill the tiny irregular gaps at multiple angles. The injection process is uniform and bubble-free. After injection, the sealant is allowed to stand for 2~10 minutes to allow the adhesive to initially set. S6. After the colloid is initially shaped, according to the angle and size of the profile, 2-3 sets of stainless steel through pins are symmetrically driven into the corner positions. The pins penetrate the profile wall and the corner bracket body to form a triple self-locking structure of locking teeth, pin riveting, and colloid bonding. S7. Transfer the profile assembly processed in step S6 to the curing area. First, let it stand at room temperature for 30 minutes to complete the surface shaping and locking. Then, use 45℃ low temperature constant temperature curing for 2 hours to achieve deep and uniform curing of the colloid and eliminate residual stress inside the colloid. S8. After the colloid has fully cured, clean the excess colloid and aluminum shavings from the surface of the profile, and finely grind and trim the joints. Check that the angle error of the assembled corners is ≤±0.1°, and randomly check the tightness, flatness and sealing of the corners. There should be no looseness or potential for water leakage or air leakage.

2. The multi-angle corner assembly processing technology for thermally broken aluminum doors and windows according to claim 1, characterized in that: The locking tooth bracket includes a semicircular plate and two hinged wing plates. The semicircular plate is hinged to the same side of the two wing plates. The semicircular plate has an arc-shaped groove, which is parallel to the curved end of the semicircular plate. The groove wall of the arc-shaped groove has a number of teeth 1, with a tooth pitch of 0.2mm. Both wing plates have a number of teeth 2, which are located in the arc-shaped groove. The multiple teeth 2 mesh with the teeth 1 to fix the two wing plates.

3. The multi-angle corner assembly processing technology for thermally broken aluminum doors and windows according to claim 2, characterized in that: The semicircular piece is made of spring steel.

4. The multi-angle corner assembly processing technology for thermally broken aluminum doors and windows according to claim 3, characterized in that: In step S3, the profiles are first initially bonded by static pre-pressing with a pressure of 0.3MPa for 3s, and then vibrated with a vibration frequency of 35Hz and an amplitude of 0.1mm for 10s.

5. The multi-angle corner assembly processing technology for thermally broken aluminum windows and doors according to claim 4, characterized in that: In step S5, for 1.4mm thin-walled profiles, the glue injection flow rate is reduced by 10%~15%; for 2.0mm thick-walled profiles, the standard glue injection flow rate is maintained to ensure that the cavity of profiles with different wall thicknesses is fully filled without glue overflow or profile extrusion deformation.

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