Composite connecting component and machining method thereof

Abstract

The invention relates to a composite connecting component applied to the field of doors and windows and a processing method of the composite connecting component, which are characterized in that a special composite bonding material is adopted to bond an energy-saving core material for a frame between a frame inner side aluminum profile and a frame outer side aluminum profile, and a flat pressing process of a compression roller is supplemented; the overall strength of the composite material and the assembled frame body can be effectively improved, the service life is prolonged, 90-degree corner combining is carried out on the composite material through the matched corner connector assembly, special double-component corner combining glue is used in an auxiliary mode, the structural strength of the corner combining part of the door and window frame is effectively improved, and the energy-saving core material for the frame is made of glass fiber reinforced polyurethane materials, so that the energy-saving core material is environment-friendly and energy-saving. The composite window frame connecting component has the advantages of high strength, high temperature resistance, heat insulation and other properties, and the stability and use durability of each property of the product are comprehensively improved, so that the manufactured composite window frame connecting component can be used for manufacturing multiple products such as fireproof windows, energy-saving windows, soundproof windows, energy-saving fireproof curtain walls and the like, and multiple requirements of high strength, fire prevention, heat insulation, heat insulation, energy conservation, soundproof sealing and the like are met.

Description

Technical Field

[0001] A composite connecting member involved in the present invention, particularly a composite connecting member applied to the field of doors and windows and its processing method. Background Art

[0002] With the increasing number of low-energy consumption buildings, the energy-saving standards for doors and windows have also been continuously improved. To improve the heat insulation performance of traditional doors and windows, mainly by increasing the number of glass layers, which not only increases the weight of the doors and windows and the load-bearing requirements of the hardware, but also significantly increases the cost. The heat transfer coefficient of double-glazed single-chamber single-silver glass can reach about 1.5 w / (㎡·K). If the whole window is to reach a heat transfer coefficient of 1.5 - 1.6 w / (㎡·K), the material selection and heat insulation structure design of the door and window profiles are key points and difficulties.

[0003] For example, the specification of Chinese Patent CN118462021A discloses a glass fiber reinforced polyurethane energy-saving door and window installation structure and installation process. Installation holes are processed in the frame structure, the support member is inserted into the installation holes, self-tapping screws are inserted into the connection holes, the heads of the self-tapping screws are pressed on the support surface, and the tips are connected to the external frame. The self-tapping screws are rotated to compress the frame structure. The heads of the self-tapping screws apply a pressing force along the axial direction of the installation holes to the frame structure through the inner ends. The outer wall of the support member is smooth, generating a small radial shear force on the inner wall of the installation holes, and the extruding force on the broken glass fibers along their length directions is small, making it difficult to form crack deformation, thus ensuring the overall installation quality.

[0004] The corner assembly structure is a connection structure for splicing the main profiles in the frame of the opening sash of a glass curtain wall. It refers to a structure in which aluminum alloy profiles are fixedly connected together by mechanical connection and chemical bonding with metal corner connectors. When installing the corner connectors, generally, glue is injected to permanently bond the corner connectors and the aluminum alloy profiles. On the one hand, it can make the aluminum profiles and the corner connectors more firm and not easily loosen even when being impacted. On the other hand, it can fill the holes and seams at the corner parts of the profiles, enhancing the corner sealing performance.

[0005] For example, the specification of Chinese Patent CN112431527B discloses an opening sash stable corner assembly structure and the corner connector therein, including profiles and corner connectors. The end of the profile is a 45° angle, and the 90° corner connector forms two legs, which are respectively inserted into the corner connector accommodation spaces at the adjacent ends of two adjacent profiles constituting the opening sash frame, and a glass panel is fixed on the frame formed by the profiles and the corner connectors. This opening sash stable corner assembly structure improves the rigidity of the corner assembly node; at the same time, it also realizes the design concept of strong nodes and weak components, thus avoiding potential safety hazards of the sash falling due to sudden failure of the corner assembly node with little deformation; it also solves the problem of unreasonable corner force.

[0006] Most of the existing door and window structures adopt a mechanical strong pressure deformation processing method. After compounding, there will be height differences or gaps between the structures, reducing the watertightness. And for the corner parts, only corner glue is used for bonding, which also has insufficient firmness. Summary of the Invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that there are easily height differences or gaps between the structures after compounding of existing doors and windows, and for the corner parts, only corner glue is used for bonding, which has the defect of insufficient firmness.

[0008] To solve the above problems, the present invention provides a composite connection member, including an inner frame aluminum profile, an outer frame aluminum profile, and at least one energy-saving core material for the frame. The inner frame aluminum profile is located on the indoor side, the outer frame aluminum profile is located on the outdoor side, the energy-saving core material for the frame is arranged between the inner frame aluminum profile and the outer frame aluminum profile, and both the inner frame aluminum profile and the outer frame aluminum profile are bonded to the energy-saving core material for the frame through a bonding composite layer. The energy-saving core material for the frame is made of glass fiber reinforced polyurethane material, with a bending strength of not less than 1400 Mpa, a bending modulus of not less than 40 Gpa, a melting point temperature of not less than 1000 °C, and a high and low temperature resistance range of -50 °C - 120 °C. The inner frame aluminum profile, the outer frame aluminum profile, and the energy-saving core material for the frame all have cavity structures inside.

[0009] A processing and assembly method of a composite connection member includes the following steps:

[0010] S1. Inject a layer of composite adhesive onto the inner surface of the inner frame aluminum profile in advance, then insert one end of the energy-saving core material for the frame into the inner surface of the inner frame aluminum profile, and press the energy-saving core material for the frame and the inner frame aluminum profile together through a pressure roller to make the composite adhesive bond tightly with the two, and cure to form a bonding composite layer;

[0011] S2. Inject a layer of composite adhesive onto the inner surface of the outer frame aluminum profile in advance, then insert the other end of the energy-saving core material for the frame into the inner surface of the outer frame aluminum profile, and press the inner frame aluminum profile and the outer frame aluminum profile together through a pressure roller, so that the energy-saving core material for the frame and the outer frame aluminum profile bond tightly with the composite adhesive, and the composite adhesive also cures to form a bonding composite layer. At this time, the inner frame aluminum profile, the outer frame aluminum profile, and the energy-saving core material for the frame form an integrated composite material;

[0012] S3. Cut the integrated composite material to obtain a to-be-connected member with a 45° beveled edge at the edge end. Take two to-be-connected members for right-angle assembly. During assembly, strengthen them with a corner code assembly. The two ends of the corner code assembly are respectively inserted into the cavity interiors of the two to-be-connected members, and are bonded and fixed to the inner walls of the cavities of the two to-be-connected members through special two-component corner glue, and finally a window frame composite connection member is made.

[0013] As a further supplement to the present application, the corner code assembly includes a pair of frame group corner codes and a pair of core material corner codes, both of which are in an L-shaped structure. The two ends of the frame group corner code are respectively inserted into the cavities inside the inner frame aluminum profile and the outer frame aluminum profile, and the two ends of the core material corner code are respectively inserted into the cavities of a pair of energy-saving core materials for the frame.

[0014] As another improvement of the present application, the specific operations for assembling the corner code assembly in step S3 include the following steps:

[0015] S3.1 Before assembling the corner code assembly, lay a layer of reinforcing filler on the inner end face of the corner code assembly, then cover a fiber mesh cloth outside the reinforcing filler, and bond and fix the edge of the fiber mesh cloth to the surface of the corner code assembly through an adhesive. The fiber mesh cloth plays a role in wrapping the reinforcing filler, and the two are combined to form a porous soft capsule.

[0016] S3.2 Perform the same operations as in step S3.1 on the outer end face of the corner code assembly.

[0017] S3.3 Then insert the two ends of the corner code assembly into the cavities of the two connectors to be connected. The porous soft capsule will fill the gap between the corner code assembly and the connectors to be connected. Subsequently, inject a two-component corner glue into the cavity to further fill the gap, and the two-component corner glue will penetrate into the reinforcing filler, so that the viscous porous soft capsule bonds and fixes the corner code assembly to the connectors to be connected.

[0018] As a supplementary improvement of the present application, the reinforcing filler includes soft wood chips and hard tennis balls, which are evenly mixed and distributed. The length of the soft wood chips and the outer diameter of the hard tennis balls are both greater than the aperture of the fiber mesh cloth.

[0019] As a supplementary improvement of the present application, the hard tennis balls are made of ferromagnetic materials. In step S3.3, during the injection of the two-component corner glue, apply a magnetic field through an electromagnet at the outer end of the connector to be connected, and intermittently change the direction of the current to make the hard tennis balls move to a certain extent in the soft wood chips, promoting the flow and filling of the two-component corner glue in the reinforcing filler.

[0020] As a further supplement to the present application, the present application further includes an outer fan aluminum profile and an inner fan aluminum profile. An energy-saving core material for the fan is provided between the outer fan aluminum profile and the inner fan aluminum profile, and the two are also bonded through an adhesive composite layer. The energy-saving core material for the fan has the same material as the energy-saving core material for the frame.

[0021] As a further supplement to the present application, use the same preparation method as that of the window frame composite connection member to assemble the outer fan aluminum profile, the inner fan aluminum profile and the energy-saving core material for the fan to form a window fan composite connection member, and fixedly connect the window fan composite connection member to the right-angle inner side of the window frame composite connection member. The window fan composite connection member is used for the installation of tempered glass.

[0022] In summary, this application uses a special composite bonding material to bond the energy-saving core material for the frame between the inner aluminum profile and the outer aluminum profile of the frame, and is supplemented by a flat pressing process with a pressing roller, which can effectively increase the overall strength of the composite material and the assembled frame body and extend the service life. The 90° corner assembly of the composite material is carried out through a supporting corner code assembly, and the use of a special two-component corner assembly glue effectively improves the structural strength of the corner assembly part of the door and window frame. The energy-saving core material for the frame is made of glass fiber-reinforced polyurethane material, which has multiple properties such as high strength, high temperature resistance, heat insulation, etc., comprehensively improving the stability and service durability of various properties of the product, so that the manufactured window frame composite connection member can be used to make various products such as fireproof windows, fire-resistant windows, energy-saving windows, heat-insulating windows, sound-insulating windows, system windows, sun rooms, energy-saving fireproof curtain walls, etc., meeting various requirements such as high strength, fire and heat insulation, fire resistance integrity, energy conservation and heat preservation, sound insulation and sealing;

[0023] When using a corner code assembly with pre-set porous soft capsules for corner assembly, the porous soft capsules mainly fill the gap between the profile and the corner code assembly, which can reduce the injection amount of the subsequent corner assembly glue. During the injection process of the corner assembly glue, the corner assembly glue can penetrate into the internal soft wood chips. The hard tennis balls can effectively increase the pores between the soft wood chips, further promoting the flow of the corner assembly glue. Coupled with the injection pressure of the corner assembly glue, the corner assembly glue can fully penetrate and fill inside the reinforcing filler, and contact the surface of the corner code assembly and the inner wall of the profile cavity, playing a role in bonding and fixing the three;

[0024] Since the corner assembly glue penetrates through the internal porous soft capsules and cures to form a whole, compared with the simple cured structure of the corner assembly glue in the prior art, the cured structure in which the reinforcing filler and the corner assembly glue are mutually fused in this application has higher strength and hardness, which can further improve the corner assembly strength between the corner code assembly and the profile. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Partial three-dimensional structure schematic diagram of the first embodiment of this application Figure 1 ;

[0026] Figure 2 Partial three-dimensional structure schematic diagram two of the first embodiment of this application;

[0027] Figure 3 Flow schematic diagram when assembling the energy-saving core material for the frame in the first embodiment of this application;

[0028] Figure 4 Schematic diagram of performance parameters of different materials in the prior art;

[0029] Figure 5 Internal material layout schematic diagram of the energy-saving core material for the frame in the first embodiment of this application;

[0030] Figure 6 Side structure schematic diagram after the structure is assembled in the first embodiment of the present application;

[0031] Figure 7 Three-dimensional structure schematic diagram of the corner code assembly in the first embodiment of the present application;

[0032] Figure 8 Three-dimensional structure schematic diagram of the core material corner code in the second embodiment of the present application;

[0033] Figure 9 Side structure schematic diagram of the core material corner code in the second embodiment of the present application;

[0034] Figure 10 Structure schematic diagram of the reinforcing filler in the second embodiment of the present application;

[0035] Figure 11 Structure schematic diagram after the corner code is assembled and injected with glue in the prior art.

[0036] Explanation of the reference numerals in the figure:

[0037] 1 Inner aluminum profile of the frame, 2 Outer aluminum profile of the frame, 3 Energy-saving core material for the frame, 4 Bonding composite layer, 5 Corner code assembly, 51 Frame group corner code, 52 Core material corner code, 53 Fiber mesh cloth, 54 Reinforcing filler, 6 Outer aluminum profile of the sash, 7 Inner aluminum profile of the sash, 8 Energy-saving core material for the sash. Specific embodiments

[0038] The following will make a detailed description of the two embodiments of the present application with reference to the accompanying drawings.

[0039] The first embodiment:

[0040] The present invention provides a composite connection member. Please refer to Figure 1 and Figure 2 , including an inner aluminum profile 1 of the frame, an outer aluminum profile 2 of the frame, and at least one energy-saving core material 3 for the frame. The inner aluminum profile 1 of the frame is located on the indoor side, the outer aluminum profile 2 of the frame is located on the outdoor side, the energy-saving core material 3 for the frame is arranged between the inner aluminum profile 1 of the frame and the outer aluminum profile 2 of the frame, and both the inner aluminum profile 1 of the frame and the outer aluminum profile 2 of the frame are bonded to the energy-saving core material 3 through a bonding composite layer 4. The energy-saving core material 3 for the frame is made of a glass fiber reinforced polyurethane material. Combining Figure 4As shown, its flexural strength is not less than 1400 Mpa, flexural modulus is not less than 40 Gpa, melting point temperature is not less than 1000 °C, the temperature resistance range is -50 °C - 120 °C. The inner side aluminum profile 1 of the frame, the outer side aluminum profile 2 of the frame and the energy-saving core material 3 for the frame all have cavity structures inside, which is convenient for installing corner codes. The energy-saving core material 3 for the frame of this application is used as the main load-bearing structure, and the width can reach 80 mm. Compared with the maximum width of 64 mm of the PA66 + 25% glass fiber nylon heat insulation strip, it not only has heat insulation but also has a stable structure, comprehensively improving the stability of various product performances and the service durability, and its internal is arranged in a heterogeneous manner as Figure 5 shown, the irregular structure can more effectively disrupt the sound wave propagation path, causing the sound waves to be reflected and scattered multiple times inside the material, thereby consuming more sound energy and having a better sound insulation effect.

[0041] Combined with Figure 3 shown, the processing and assembly method of the above composite connection member includes the following steps:

[0042] S1. Inject a layer of composite adhesive onto the inner surface of the inner side aluminum profile 1 of the frame in advance, then insert one end of the energy-saving core material 3 for the frame into the inner surface of the inner side aluminum profile 1 of the frame, and press the energy-saving core material 3 for the frame and the inner side aluminum profile 1 of the frame together through a pressure roller, so that the composite adhesive is tightly bonded to the two, and solidify to form a bonded composite layer 4;

[0043] S2. Inject a layer of composite adhesive onto the inner surface of the outer side aluminum profile 2 of the frame in advance, then insert the other end of the energy-saving core material 3 for the frame into the inner surface of the outer side aluminum profile 2 of the frame, and press the inner side aluminum profile 1 of the frame and the outer side aluminum profile 2 of the frame together through a pressure roller, so that the energy-saving core material 3 for the frame and the outer side aluminum profile 2 of the frame are tightly bonded to the composite adhesive, and the composite adhesive also solidifies to form a bonded composite layer 4. At this time, the inner side aluminum profile 1 of the frame, the outer side aluminum profile 2 of the frame and the energy-saving core material 3 for the frame form an integral composite material;

[0044] S3. Combined with Figure 1 shown, cut the integral composite material to obtain a to-be-connected member with a 45° bevel at the edge end, take two to-be-connected members for right-angle assembly, and during assembly, reinforce with a corner code assembly 5 between them. The two ends of the corner code assembly 5 are respectively inserted into the cavity interiors of the two to-be-connected members, and are adhesively fixed to the inner walls of the cavities of the two to-be-connected members through a special two-component corner glue, and finally a window frame composite connection member is made.

[0045] After the corner code assembly is completed, a seamless welding operation is required between the inner aluminum profile 1 of the frame and the outer aluminum profile 2 of the frame to fix them into one body. In addition, the above processing and assembly method only describes part of the assembly process of the doors and windows, and the obtained is an L-shaped window frame composite connection member, which can be used to manufacture products such as fireproof windows, fire-resistant windows, energy-saving windows, passive windows, heat-insulating windows, sound-insulating windows, system windows, sun rooms, energy-saving fireproof curtain walls, etc., meeting various requirements such as high strength, fireproof and heat-insulating, fire resistance integrity, heat preservation and energy saving, sound insulation and sealing. The injection method of the corner glue is the prior art (Prior art: Generally, glue injection holes are provided on the profiles, and the filling of the corner glue is usually marked by the glue flowing out from the gap between the pin hole and the pin or from the position where the corner assembly tool breaks the profile in the corner).

[0046] Please refer to Figure 7 , the corner code assembly 5 includes a pair of frame corner codes 51 and a pair of core material corner codes 52, and both are in an L-shaped structure. The two ends of the frame corner code 51 are respectively inserted into the cavity interiors of the inner aluminum profile 1 of the frame and the outer aluminum profile 2 of the frame. That is, one frame corner code 51 is used for the right-angle assembly between a horizontal and a vertical pair of inner aluminum profiles 1 of the frame, and the other frame corner code 51 is used for the right-angle assembly between a horizontal and a vertical pair of outer aluminum profiles 2 of the frame. The two ends of the core material corner code 52 are respectively inserted into the cavity interiors of a pair of energy-saving core materials 3 for the frame, and the core material corner code 52 is used for the right-angle assembly between a horizontal and a vertical pair of energy-saving core materials 3 for the frame.

[0047] Combined with Figure 6 shown in the figure, the present application further includes an outer aluminum profile 6 of the sash and an inner aluminum profile 7 of the sash. An energy-saving core material 8 for the sash is provided between the outer aluminum profile 6 of the sash and the inner aluminum profile 7 of the sash, and the two are also bonded through the bonding composite layer 4 with the energy-saving core material 8 for the sash. The energy-saving core material 8 for the sash has the same material as the energy-saving core material 3 for the frame. The outer aluminum profile 6 of the sash, the inner aluminum profile 7 of the sash and the energy-saving core material 8 for the sash are assembled to form a sash composite connection member by using the same preparation method as that of the window frame composite connection member, and the sash composite connection member is fixedly connected to the right-angle inner side of the window frame composite connection member. The sash composite connection member is used for the installation of tempered glass, thereby forming a complete door and window structure.

[0048] The second embodiment:

[0049] On the basis of the first embodiment, the following contents are added in this embodiment: The specific operation of assembling the corner code assembly 5 in step S3 includes the following steps:

[0050] S3.1. Please refer to Figure 8 and Figure 9, before assembling the corner code component 5, lay a layer of reinforcing filler 54 on the inner end face of the corner code component 5, then cover a fiber mesh cloth 53 outside the reinforcing filler 54, and bond and fix the edge of the fiber mesh cloth 53 to the surface of the corner code component 5 through an adhesive. The fiber mesh cloth 53 plays a role in wrapping the reinforcing filler 54, and the two are combined to form a porous soft capsule;

[0051] S3.2. Perform the same operations on the outer end face of the corner code component 5 as in step S3.1 ( Figure 8 and Figure 9 Taking the core material corner code 52 as an example in the figure, the structure is schematically shown. In actual operation, the fiber mesh cloth 53 and the reinforcing filler 54 can also be arranged on the frame group corner code 51);

[0052] S3.3. Then insert both ends of the corner code component 5 into the cavities of two connectors to be connected. The porous soft capsule will fill the gap between the corner code component 5 and the connectors to be connected. Subsequently, inject two-component corner glue into the cavities to further fill the gap, and the two-component corner glue will penetrate into the interior of the reinforcing filler 54, so that the viscous porous soft capsule bonds and fixes the corner code component 5 to the connectors to be connected.

[0053] The reinforcing filler 54 includes soft wood chips ( Figure 10 structure at A in the figure) and hard tennis balls ( Figure 10 structure at B in the figure). The two are evenly mixed and distributed. The length of the soft wood chips and the outer diameter of the hard tennis balls are both larger than the pore diameter of the fiber mesh cloth 53. Combining with the elasticity of the soft wood chips themselves, the reinforcing filler 54 is not easy to move out of the pores of the fiber mesh cloth 53, and the porous soft capsule formed by the two has good elastic deformation ability. For example, the pore diameter of the fiber mesh cloth can be 1-2 mm, and the outer diameter of the hard tennis ball can be 2.5-3 mm. Specifically, it can be appropriately selected according to the gap size between (5) and the inner wall of the cavity, that is, when the gap is large, a hard tennis ball with a larger diameter can be selected, and the pore diameter of the hard tennis ball itself should be maximized as much as possible to facilitate the flow of the corner glue inside the reinforcing filler 54.

[0054] In the prior art, the corner glue can fill the gap and hole seams between the corner code and the profile, playing a role in connecting the two. Figure 11 is the internal state of the profile cavity after injecting glue in the prior art, but it has the following defects: on the one hand, it will consume a large amount of corner glue; on the other hand, simply relying on the corner glue to fill the gap, the cured structure strength and hardness after solidification are both relatively low, and it is easy to break and fragment under external force, resulting in looseness between the corner code and the profile;

[0055] Therefore, in this embodiment, by pre - arranging the fiber mesh cloth 53 and the reinforcing filler 54 on the surfaces of the frame - group corner code 51 and the core - material corner code 52, when the corner - code assembly 5 is inserted into the cavity of the to - be - connected member, the porous soft capsule mainly fills the gap between the two, thereby reducing the injection amount of the subsequent corner - assembling glue. And during the process of injecting the corner - assembling glue, the corner - assembling glue can penetrate into the interior of the soft wood chips. The hard tennis balls mixed in the soft wood chips can effectively increase the pores between the soft wood chips, further promoting the flow of the corner - assembling glue. Together with the injection pressure of the corner - assembling glue, the corner - assembling glue can fully penetrate and fill the interior of the reinforcing filler 54, contact the surface of the corner - code assembly 5 and the inner wall of the profile cavity, and play a role in bonding and fixing the three. Since the corner - assembling glue penetrates through the interior of the reinforcing filler 54 and cures to form an integral body, compared with the simple corner - assembling glue curing structure in the prior art, the curing structure in which the reinforcing filler 54 and the corner - assembling glue are mutually fused in this application has higher strength and hardness, and can further improve the corner - assembling strength between the corner - code assembly 5 and the profile.

[0056] On the basis of the above - mentioned content, the following settings can also be made: The hard tennis balls are made of ferromagnetic materials. In step S3.3, during the process of injecting the two - component corner - assembling glue, an electromagnet is used at the outer end of the to - be - connected member to assist with the magnetic field effect, and the direction of the current is changed intermittently, so that the hard tennis balls move to a certain extent in the soft wood chips, promoting the change of the pores between the soft wood chips and further promoting the flow and filling of the two - component corner - assembling glue in the reinforcing filler 54.

[0057] Combined with the current actual requirements, the above - mentioned embodiment adopted in this application does not limit the protection scope thereto. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A composite connecting member, characterized in that: It includes an inner-frame aluminum profile (1), an outer-frame aluminum profile (2), and at least one energy-saving core material for the frame (3). The inner-frame aluminum profile (1) is located on the indoor side, the outer-frame aluminum profile (2) is located on the outdoor side, and the energy-saving core material for the frame (3) is arranged between the inner-frame aluminum profile (1) and the outer-frame aluminum profile (2). Both the inner-frame aluminum profile (1) and the outer-frame aluminum profile (2) are bonded to the energy-saving core material for the frame (3) through an adhesive composite layer (4). The energy-saving core material for the frame (3) is made of a glass fiber-reinforced polyurethane material, with a flexural strength of not less than 1400 Mpa, a flexural modulus of not less than 40 Gpa, a melting point temperature of not less than 1000 °C, and a high and low temperature resistance range of -50 °C to 120 °C. The inner-frame aluminum profile (1), the outer-frame aluminum profile (2), and the energy-saving core material for the frame (3) all have a cavity structure inside.

2. The composite connecting member according to claim 1, wherein: Its processing and assembly method includes the following steps: S1. Inject a layer of composite adhesive onto the inner surface of the inner-frame aluminum profile (1) in advance, then insert one end of the energy-saving core material for the frame (3) into the inner surface of the inner-frame aluminum profile (1), and press the energy-saving core material for the frame (3) and the inner-frame aluminum profile (1) together through a pressure roller to make the composite adhesive bond tightly with the two, and cure to form an adhesive composite layer (4); S2. Inject a layer of composite adhesive onto the inner surface of the outer-frame aluminum profile (2) in advance, then insert the other end of the energy-saving core material for the frame (3) into the inner surface of the outer-frame aluminum profile (2), and press the inner-frame aluminum profile (1) and the outer-frame aluminum profile (2) together through a pressure roller, so that the energy-saving core material for the frame (3) and the outer-frame aluminum profile (2) bond tightly with the composite adhesive, and the composite adhesive also cures to form an adhesive composite layer (4). At this time, the inner-frame aluminum profile (1), the outer-frame aluminum profile (2), and the energy-saving core material for the frame (3) form an integrated composite material; S3. Cut the integrated composite material to obtain a connection member to be joined with a 45° bevel at the edge end. Take two connection members to be joined for right-angle assembly. During assembly, strengthen them with an angle code assembly (5). The two ends of the angle code assembly (5) are respectively inserted into the cavity interiors of the two connection members to be joined, and are adhesively fixed to the inner walls of the cavities of the two connection members to be joined through a special two-component corner glue, and finally a window frame composite connection member is made.

3. The composite connecting member according to claim 2, characterized in that: The angle code assembly (5) includes a pair of frame corner codes (51) and a pair of core material corner codes (52), and both are in an L-shaped structure. The two ends of the frame corner code (51) are respectively inserted into the cavity interiors of the inner-frame aluminum profile (1) and the outer-frame aluminum profile (2), and the two ends of the core material corner code (52) are respectively inserted into the cavity interiors of a pair of energy-saving core materials for the frame (3).

4. The composite connecting member according to claim 2, characterized in that: The specific operation of assembling the angle code assembly (5) in step S3 includes the following steps: S3.

1. Before assembling the corner code assembly (5), lay a layer of reinforcing filler (54) on the inner end face of the corner code assembly (5), then cover the outside of the reinforcing filler (54) with a fiber mesh cloth (53), and bond and fix the edge of the fiber mesh cloth (53) to the surface of the corner code assembly (5) through an adhesive. The fiber mesh cloth (53) wraps the reinforcing filler (54), and the two are combined to form a porous soft capsule. S3.

2. Perform the same operation as in step S3.1 on the outer end face of the corner code assembly (5). S3.

3. Then insert both ends of the corner code assembly (5) into the cavities of two components to be connected. The porous soft capsule will fill the gap between the corner code assembly (5) and the components to be connected. Subsequently, inject two-component corner glue into the cavity to further fill the gap, and the two-component corner glue will penetrate into the reinforcing filler (54) internally, so that the viscous porous soft capsule bonds and fixes the corner code assembly (5) to the components to be connected.

5. A composite connecting member according to claim 4, characterized in that: The reinforcing filler (54) includes soft wood chips and hard tennis balls, which are evenly mixed and distributed. The length of the soft wood chips and the outer diameter of the hard tennis balls are both larger than the pore diameter of the fiber mesh cloth (53).

6. A composite connecting member according to claim 5, characterized in that: The hard tennis balls are made of ferromagnetic materials. In step S3.3, during the injection of the two-component corner glue, apply a magnetic field through an electromagnet at the outer end of the component to be connected, and intermittently change the direction of the current to make the hard tennis balls move to a certain extent in the soft wood chips, promoting the flow and filling of the two-component corner glue in the reinforcing filler (54).

7. A composite connecting member according to claim 1, characterized in that: It further includes an outer fan aluminum profile (6) and an inner fan aluminum profile (7). There is a fan energy-saving core material (8) between the outer fan aluminum profile (6) and the inner fan aluminum profile (7), and the two are also bonded through an adhesive composite layer (4) with the fan energy-saving core material (8). The fan energy-saving core material (8) is made of the same material as the frame energy-saving core material (3).

8. A composite connecting member according to claim 7, characterized in that: Use the same preparation method as that of the window frame composite connection member to assemble the outer fan aluminum profile (6), the inner fan aluminum profile (7), and the fan energy-saving core material (8) to form a window fan composite connection member, and fixedly connect the window fan composite connection member to the right-angle inner side of the window frame composite connection member. The window fan composite connection member is used for the installation of tempered glass.

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