Method for producing low-energy thermal insulation profiles

Abstract

The application discloses a low-energy-consumption heat insulation profile preparation method for preparing a foaming heat insulation strip in a heat insulation cavity of a low-energy-consumption heat insulation profile through a mold, wherein the mold comprises a lower mold and an upper mold, the lower mold is provided with a mounting clamping position, and the upper mold comprises a forming wall, and the low-energy-consumption heat insulation profile preparation method comprises the following steps: S100, loading the low-energy-consumption heat insulation profile into the mounting clamping position of the lower mold; S200, integrally heating and preheating the mold and the low-energy-consumption heat insulation profile; S300, injecting a foaming heat insulation material into the heat insulation cavity of the low-energy-consumption heat insulation profile; and S400, pressing the upper mold on the lower mold, so that the forming wall of the upper mold is arranged on the glue injection opening of the heat insulation cavity and forms a forming cavity together with the heat insulation cavity, and then the foaming heat insulation material is automatically formed in the forming cavity. The low-energy-consumption heat insulation profile preparation method can prepare the low-energy-consumption heat insulation profile with lower material cost, higher structural strength, better stress effect and better heat insulation effect, and meets the low-energy-consumption requirement.

Description

Technical Field

[0001] This invention relates to the field of thermal insulation profile technology, and in particular, to a method for preparing a low-energy thermal insulation profile. Background Technology

[0002] Currently, aluminum alloy profiles are required to not only possess advantages such as aesthetic appearance, good sealing performance, high strength, light weight, and ease of installation, but also increasingly higher requirements for their thermal insulation performance. Traditional aluminum alloy profiles are generally assembled from indoor and outdoor profiles and thermal break strips. The thermal break strips connect the indoor and outdoor profiles into a whole while simultaneously blocking heat transfer between them, thus achieving a thermal insulation effect.

[0003] For example, the high-strength decorative aluminum profile for doors and windows provided by Chinese utility model patent CN215169227U includes a left body and a right body, with a thermal break strip snapped between them. The thermal break strip is made of nylon 66. However, although this structure can achieve a certain degree of thermal insulation, the connection between the left and right bodies relies solely on the thermal break strip for stress. This requires a relatively thick and strong thermal break strip, which not only increases material costs but also affects the thermal conductivity of the thermal break strip, reducing the insulation effect. More importantly, aluminum alloy profiles are already widely used in the energy-saving building industry. With my country's increasingly stringent requirements for building energy conservation, profiles with large-scale configurations of nylon 66 thermal break strips are no longer sufficient to meet low energy consumption requirements. Summary of the Invention

[0004] This invention provides a method for preparing low-energy-consumption thermal insulation profiles to solve the technical problems of high cost, poor thermal insulation effect, and inability to meet low-energy-consumption requirements of existing profiles.

[0005] A method for preparing a low-energy-consumption thermal insulation profile includes preparing a foamed thermal insulation strip in the thermal insulation cavity of the low-energy-consumption thermal insulation profile using a mold. The mold includes a lower mold and an upper mold. The lower mold has mounting slots for embedding the low-energy-consumption thermal insulation profile, and the upper mold includes a molding wall adapted to the glue injection opening of the thermal insulation cavity. The method for preparing the low-energy-consumption thermal insulation profile includes the following steps:

[0006] S100: Insert the low-energy thermal insulation profile into the mounting slot of the lower mold;

[0007] S200: The mold and low-energy-consumption thermal insulation profile are preheated as a whole;

[0008] S300: Inject foamed insulation material into the insulation cavity of the low-energy-consumption insulation profile;

[0009] S400: Press the upper mold onto the lower mold so that the molding wall cover of the upper mold is placed on the injection opening of the heat insulation cavity and together with the heat insulation cavity to form a molding cavity, thereby allowing the foamed heat insulation material to be automatically molded in the molding cavity.

[0010] Preferably, the foamed thermal insulation material comprises isocyanate and polyether polyol, wherein the polyether polyol material is doped with a catalyst, a foaming agent, a homogenizer and a flame retardant, and the mass ratio of the isocyanate to the polyether polyol is 1:1.1.

[0011] Preferably, step S200 specifically includes: preheating the mold and the low-energy-consumption heat-insulating profile as a whole to 35°C to 50°C.

[0012] Preferably, step S300 specifically includes:

[0013] S301: Calculate the preset injection amount based on the foaming characteristics of the foamed thermal insulation material and the volume of the thermal insulation cavity, and control the reaction pressure of the foamed thermal insulation material in the molding cavity to be 140-160 kPa through the preset injection amount;

[0014] S302: Inject foamed thermal insulation material into the thermal insulation cavity of the low-energy thermal insulation profile according to the preset injection amount.

[0015] Preferably, step S302 specifically includes: adjusting the injection gun nozzle of the injection equipment to the central axis of the heat insulation cavity, using a linear drive device to drive the mold to move at a constant speed along the length direction of the low-energy-consumption heat insulation profile, and simultaneously injecting foamed heat insulation material into the heat insulation cavity of the low-energy-consumption heat insulation profile through the injection gun nozzle according to the preset injection amount.

[0016] Preferably, the upper mold further includes an exhaust wall connected to the edge of the forming wall, and the mold further includes a pressure strip for pressing on the low-energy-consumption heat-insulating profile. The pressure strip is arranged along the pressing direction of the upper mold, and the pressure strip is also used to limit the lowest pressing position of the upper mold to a state where the exhaust wall has a gap relative to the edge of the heat insulation cavity, thereby forming an exhaust channel through the gap between the exhaust wall and the edge of the heat insulation cavity.

[0017] Preferably, the lower mold is provided with an installation groove in the installation slot, and the installation slot is provided with the installation groove on both sides of the opposite side along the downward pressing direction of the forming wall. The mold also includes a buffer strip embedded in the installation groove and used to elastically abut against the low-energy heat-insulating profile.

[0018] Preferably, the low-energy heat-insulating profile includes a first profile and a second profile disposed opposite to each other, and a decorative strip disposed between the first profile and the second profile. The first profile includes a first connecting wall disposed toward the second profile, and the second profile includes a second connecting wall disposed toward the first profile. The first end of the decorative strip is detachably connected to the first connecting wall, and the second end of the decorative strip is detachably connected to the second connecting wall. The decorative strip, the first connecting wall, and the second connecting wall together enclose a heat-insulating cavity.

[0019] Preferably, the first connecting wall and / or the second connecting wall are provided with connecting grooves, the decorative strip includes a decorative panel and an mounting strip connected to the decorative panel and passing through the connecting groove, the cross-section of the connecting groove is a circular hole with an opening, the mounting strip includes a cylindrical strip adapted to the circular hole and a connecting strip connected to one side of the cylindrical strip, the end of the connecting strip away from the cylindrical strip is connected to the decorative panel; the connecting groove includes an arcuate flange extending along the opening, and the connecting strip is provided with an arcuate sealing groove adapted to the arcuate flange.

[0020] Preferably, the inner wall of the insulation cavity is provided with a serrated structure for attaching the foamed insulation material and / or with T-shaped barbs.

[0021] The present invention has the following beneficial effects:

[0022] The low-energy-consumption thermal insulation profile preparation method provided by this invention uses a mold to prepare a foamed thermal insulation strip in the thermal insulation cavity of the low-energy-consumption thermal insulation profile. First, the low-energy-consumption thermal insulation profile is positioned and fixed using the mounting slot of the lower mold. Then, the mold and the low-energy-consumption thermal insulation profile are preheated to a preset temperature. Simultaneously, the mold provides insulation for the low-energy-consumption thermal insulation profile, preventing it from cooling down too quickly. Compared to preheating the low-energy-consumption thermal insulation profile before placing it into the mold, this method avoids the temperature difference between the low-energy-consumption thermal insulation profile and the mold affecting the clamping and positioning accuracy. The mold also does not cool the low-energy-consumption thermal insulation profile, thus ensuring that the thermal insulation cavity of the low-energy-consumption thermal insulation profile meets the reaction requirements of the foamed thermal insulation material. Temperature requirements are met. Then, foamed insulation material is injected into the insulation cavity of the low-energy-consumption insulation profile. Finally, the upper mold is pressed onto the lower mold, so that the molding wall of the upper mold is positioned on the injection opening of the insulation cavity and together with the insulation cavity to form a molding cavity. This allows the foamed insulation material to automatically form within the molding cavity, effectively ensuring that the reaction temperature and pressure of the foamed insulation material meet the requirements. The foamed insulation material provides insulation to both the inner and outer sides of the low-energy-consumption insulation profile. Compared to using traditional nylon insulation strips, this method not only has lower material costs, higher structural strength, and better stress resistance, but also allows for normal use in different temperature environments without deformation. Furthermore, it enables the low-energy-consumption insulation profile to achieve a lower thermal conductivity, resulting in better insulation while meeting low-energy consumption requirements.

[0023] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is a step diagram illustrating the method for preparing low-energy thermal insulation profiles provided in an embodiment of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the end face structure of the low-energy-consumption thermal insulation profile in the low-energy-consumption thermal insulation profile preparation method shown.

[0027] Figure 3 for Figure 2 An exploded view of the low-energy thermal insulation profile shown;

[0028] Figure 4 for Figure 2 A magnified view of region A in the low-energy thermal insulation profile shown;

[0029] Figure 5 for Figure 1 The schematic diagram of the mold structure in the low-energy thermal insulation profile preparation method shown below

[0030] Figure 6 for Figure 5 The diagram shows the changing states of the mold.

[0031] Figure 7 for Figure 6 A magnified view of region B in the mold shown.

[0032] Legend:

[0033] 1. Low-energy thermal insulation profile; 11. First profile; 111. First connecting wall; 12. Second profile; 121. Second connecting wall; 13. Decorative strip; 131. Decorative panel; 1311. Slot; 132. Mounting strip; 1321. Arc-shaped sealing groove; 14. Thermal insulation cavity; 15. Serrated structure; 16. T-shaped barb; 161. Mounting plate; 162. Barb plate; 17. Receiving groove; 18. Connecting groove; 181. Arc-shaped flange;

[0034] 2. Foamed thermal insulation materials;

[0035] 3. Mold; 31. Lower mold; 311. Mounting slot; 312. Limiting wall; 313. Mounting groove; 32. Upper mold; 321. Forming wall; 322. Venting wall; 323. Positioning protrusion; 324. Hook; 33. Locking assembly; 331. Fixed base; 332. Movable buckle; 34. Pressure strip; 341. Positioning plate; 342. Clamping part; 35. Buffer strip; 36. Hinge. Detailed Implementation

[0036] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0037] Figures 1 to 7 The present invention provides a method for preparing low-energy-consumption thermal insulation profiles, which is used to prepare foamed thermal insulation strips in the thermal insulation cavity of low-energy-consumption thermal insulation profiles using a mold. Compared with configuring traditional nylon thermal insulation strips in the profiles, the thermal insulation material has lower cost, better thermal insulation effect, and can meet the low-energy consumption requirements.

[0038] Please combine Figure 2 and Figure 3The low-energy thermal insulation profile 1 includes a first profile 11 and a second profile 12 disposed opposite to each other, and a decorative strip 13 disposed between the first profile 11 and the second profile 12. The first profile 11 includes a first connecting wall 111 disposed toward the second profile 12, and the second profile 12 includes a second connecting wall 121 disposed toward the first profile 11. The first end of the decorative strip 13 is detachably connected to the first connecting wall 111, and the second end of the decorative strip 13 is detachably connected to the second connecting wall 121. The decorative strip 13, the first connecting wall 111, and the second connecting wall 121 together form a thermal insulation cavity 14, which is used to inject foamed thermal insulation material 2.

[0039] Please combine 5 and Figure 6 The mold 3 includes a lower mold 31, an upper mold 32 and a locking assembly 33. The lower mold 31 is provided with an installation slot 311. The installation slot 311 is adapted to the shape of the low-energy heat-insulating profile 1 and is used to embed the low-energy heat-insulating profile 1, thereby realizing the clamping and positioning of the low-energy heat-insulating profile 1. The upper mold 32 includes a molding wall 321, which is adapted to the glue injection opening of the pre-set heat insulation cavity 14 on the low-energy heat insulation profile 1. The upper mold 32 is hinged to the lower mold 31. The upper mold 32 is used to rotate relative to the lower mold 31 to a state where the molding wall 321 blocks or exposes the heat insulation cavity 14. The locking assembly 33 is connected to the lower mold 31 and the upper mold 32 respectively. The locking assembly 33 is used to lock and fix the upper mold 32 relative to the lower mold 31 when the molding wall 321 blocks the heat insulation cavity 14, thereby pressing and fixing the molding wall 321 onto the glue injection opening of the heat insulation cavity 14.

[0040] like Figure 1 As shown, the method for preparing the low-energy thermal insulation profile includes the following steps:

[0041] S100: Insert the low-energy thermal insulation profile 1 into the mounting slot 311 of the lower mold 31;

[0042] S200: Heat and preheat the mold 3 and the low-energy heat-insulating profile 1 as a whole;

[0043] S300: Inject foamed thermal insulation material 2 into the thermal insulation cavity 14 of the low-energy thermal insulation profile 1;

[0044] S400: Press the upper mold 32 onto the lower mold 31 so that the molding wall 321 of the upper mold 32 covers the injection opening of the heat insulation cavity 14 and together with the heat insulation cavity 14 to form a molding cavity, thereby allowing the foamed heat insulation material 2 to be automatically formed in the molding cavity.

[0045] The method for preparing the low-energy-consumption thermal insulation profile involves using the mold 3 to prepare a foamed thermal insulation strip in the thermal insulation cavity 14 of the low-energy-consumption thermal insulation profile 1. First, the low-energy-consumption thermal insulation profile 1 is positioned and fixed using the mounting slot 311 of the lower mold 31. Then, the mold 3 and the low-energy-consumption thermal insulation profile 1 are preheated to a preset temperature. Simultaneously, the mold 3 provides thermal insulation for the low-energy-consumption thermal insulation profile 1. This method avoids the low-energy-consumption thermal insulation profile 1 cooling down too quickly. Compared to heating the low-energy-consumption thermal insulation profile 1 before inserting it into the mold 3, the temperature difference between the low-energy-consumption thermal insulation profile 1 and the mold 3 will not affect the clamping and positioning accuracy. The mold 3 will also not cool the low-energy-consumption thermal insulation profile 1, thus ensuring that the thermal insulation cavity 14 of the low-energy-consumption thermal insulation profile 1 meets the reaction temperature requirements of the foamed thermal insulation material 2. At this point, the material is then inserted into the mold 3. The foamed thermal insulation material 2 is injected into the thermal insulation cavity 14 of the low-energy thermal insulation profile 1. Finally, the upper mold 32 is pressed onto the lower mold 31, so that the molding wall 321 of the upper mold 32 covers the injection opening of the thermal insulation cavity 14 and together with the thermal insulation cavity 14 to form a molding cavity. Thus, the foamed thermal insulation material 2 is automatically formed in the molding cavity, effectively ensuring that the reaction temperature and reaction pressure of the foamed thermal insulation material 2 meet the requirements. The foamed thermal insulation material 2 connects the first profile 11 and the second profile 12 in the low-energy thermal insulation profile 1 into a whole and realizes the thermal insulation effect between the first profile 11 and the second profile 12. Compared with the configuration of traditional nylon thermal insulation strips, it not only has lower material cost, higher structural strength, and better stress effect, but can also be used normally in different temperature environments without deformation. Moreover, it can make the low-energy thermal insulation profile 1 achieve a lower thermal conductivity and better thermal insulation effect, while meeting the low-energy requirements.

[0046] Secondly, the low-energy-consumption heat-insulating profile 1 forms the heat-insulating cavity 14 between the first profile 11 and the second profile 12 through the decorative strip 13. This not only facilitates the injection and molding of the foamed heat-insulating material 2, but also allows the decorative strip 13 to cover the foamed heat-insulating material 2 in the heat-insulating cavity 14, preventing the foamed heat-insulating material 2 from being directly exposed, making it more aesthetically pleasing. It also prevents the foamed heat-insulating material 2 from being corroded and damaged, thus affecting its performance and usability. Moreover, since the decorative strip 13 is detachably connected to the first connecting wall 111 and the second connecting wall 121 respectively, different specifications of decorative strip 13 can be flexibly disassembled and replaced to meet different usage needs, making it more versatile.

[0047] Preferably, the foamed thermal insulation material 2 comprises isocyanate and polyether polyol, wherein the polyether polyol material is doped with a catalyst, foaming agent, homogenizer, and flame retardant. The mass ratio of isocyanate to polyether polyol is 1:1.1. The reaction temperature of the foamed thermal insulation material 2 is controlled at 35℃~50℃, and the reaction pressure of the foamed thermal insulation material 2 is controlled at 140~160KPa. This allows the foamed thermal insulation strip formed by foaming the foamed thermal insulation material 2 in the molding cavity to achieve a thermal conductivity K value of 0.6~0.8W / ㎡·K, far lower than the 3.0W / ㎡·K of traditional nylon thermal insulation materials. Furthermore, the material cost is lower, approximately 30% of that of a strip profile with equivalent thermal insulation performance. Simultaneously, the quality is more stable, with a flexural strength of 38.5MPa and a tensile strength of 19.5MPa, enabling normal use in environments ranging from -40℃ to 80℃ without deformation.

[0048] Preferably, step S200 specifically includes: preheating the mold 3 and the low-energy-consumption heat-insulating profile 1 as a whole to 35°C to 50°C. Specifically, the mold 3 and the low-energy-consumption heat-insulating profile 1 can be preheated to 40°C to ensure that the heat insulation cavity 14 of the low-energy-consumption heat-insulating profile 1 meets the reaction temperature requirements of the foamed heat insulation material 2.

[0049] Preferably, step S300 specifically includes:

[0050] S301: Calculate the preset amount of adhesive based on the foaming characteristics of the foamed thermal insulation material 2 and the volume of the thermal insulation cavity 14, and control the reaction pressure of the foamed thermal insulation material 2 in the molding cavity to be 140-160 kPa through the preset amount of adhesive.

[0051] S302: Inject foamed thermal insulation material 2 into the thermal insulation cavity 14 of the low-energy thermal insulation profile 1 according to the preset injection amount.

[0052] Specifically, since the molding cavity is formed by the mold 3, it can be precisely enclosed to form the molding cavity, ensuring that the volume of the molding cavity remains constant. At this time, the amount of glue to be injected can be accurately calculated based on the volume of the heat insulation cavity 14 and the foaming characteristics of the foamed heat insulation material 2 to ensure that the reaction pressure of the foamed heat insulation material 2 in the molding cavity is 140-160 kPa. Thus, the preset amount of glue is obtained. The foamed heat insulation material 2 is injected into the heat insulation cavity 14 of the low-energy heat insulation profile 1 according to the preset amount of glue, effectively ensuring that the reaction pressure of the foamed heat insulation material 2 meets the requirements, ensuring the density and strength of the foamed heat insulation material 2 after molding, facilitating the discharge of gas, and ensuring performance.

[0053] Preferably, step S302 specifically includes: adjusting the injection nozzle of the injection device (not shown in the figure, the same below) to the central axis of the heat insulation cavity 14, using a linear drive device (not shown in the figure, the same below) to drive the mold 3 to move at a constant speed along the length direction of the low-energy heat insulation profile 1, and simultaneously injecting foamed heat insulation material 2 into the heat insulation cavity 14 of the low-energy heat insulation profile 1 through the injection nozzle according to the preset injection amount.

[0054] Specifically, the linear drive device includes a drive mechanism and a guide mechanism. The drive mechanism may include a rotary motor and a lead screw and nut assembly connected to the output shaft of the rotary motor and used to convert the rotational driving force of the rotary motor into a linear driving force. The lead screw and nut assembly is connected to the mold 3 to ensure the accuracy and stability of linear transmission. In other embodiments, the drive mechanism may also be composed of a linear motor, a linear cylinder, or a linear hydraulic rod, which can also achieve linear drive. Further, the guide mechanism includes a guide rail extending along the length direction of the low-energy-consumption heat-insulating profile 1 and a slider embedded in the guide rail for sliding along the guide rail. The mold 3 is mounted on the slider. The movement direction of the mold 3 is guided and limited by the cooperation between the slider and the guide rail, thereby improving the movement accuracy and stability of the mold 3.

[0055] The method for preparing low-energy-consumption heat-insulating profiles uses the linear drive device and the glue injection equipment to inject glue into the heat insulation cavity 14 of the low-energy-consumption heat-insulating profile 1. This allows the glue injection gun nozzle of the glue injection equipment to automatically inject glue at a uniform speed along the central axis of the heat insulation cavity 14 to different positions of the heat insulation cavity 14, effectively improving the uniformity of glue injection.

[0056] like Figure 3 As shown, preferably, in the low-energy-consumption thermal insulation profile 1, the first connecting wall 111 and / or the second connecting wall 121 are provided with serrated structures 15 for attaching the foamed thermal insulation material 2. The tooth height of the serrated structure 15 is 1-2 mm, and the tooth pitch of the serrated structure 15 is 1-2 mm. The serrated structure 15 can increase the contact area of ​​the foamed thermal insulation material 2 on the first connecting wall 111 and / or the second connecting wall 121 and increase the friction, effectively improving the adhesion effect of the foamed thermal insulation material 2 in the thermal insulation cavity 14, and improving the connection strength of the foamed thermal insulation material 2 relative to the first profile 11 and / or the second profile 12, thereby tightly connecting the first profile 11 and the second profile 12 into a whole, improving the overall structural strength and stress effect of the low-energy-consumption thermal insulation profile 1, and making it adaptable to higher usage requirements.

[0057] Preferably, the first connecting wall 111 and / or the second connecting wall 121 are provided with T-shaped barbs 16, which hook and fix the foamed thermal insulation material 2 in the opposite direction, thereby further improving the connection strength of the foamed thermal insulation material 2 relative to the first profile 11 and / or the second profile 12.

[0058] Furthermore, the T-shaped barb 16 includes a mounting plate 161 and a barb plate 162. The mounting plate 161 is arranged along the line connecting the first connecting wall 111 and the second connecting wall 121. The first end of the mounting plate 161 is connected to either the first connecting wall 111 or the second connecting wall 121. The barb plate 162 is located at the second end of the mounting plate 161 and is perpendicular to the mounting plate 161. The mounting plate 161 and the barb plate 162 are connected at the middle section, thus forming a T-shaped structure together. This allows the opposite ends of the barb plate 162 to hook and fix the foamed thermal insulation material 2 along the line connecting the first connecting wall 111 and the second connecting wall 121, ensuring connection strength.

[0059] Furthermore, the mounting plate 161 and / or the barb plate 162 are provided with the serrated structure 15 to improve the adhesion of the foamed thermal insulation material 2 to the T-shaped barb 16 and strengthen the connection.

[0060] Preferably, the first connecting wall 111 and / or the second connecting wall 121 are further provided with a receiving groove 17, and the T-shaped barb 16 is provided in the receiving groove 17 so as to separate the receiving groove 17 by means of the T-shaped barb 16, thereby further increasing the contact area of ​​the foamed thermal insulation material 2 on the first connecting wall 111 and / or the second connecting wall 121, and also preventing the T-shaped barb 16 from protruding.

[0061] Please combine Figure 2 and Figure 3 The first connecting wall 111 and / or the second connecting wall 121 are also provided with connecting grooves 18. The decorative strip 13 includes a decorative panel 131 and an installation strip 132 that is connected to the decorative panel 131 and adapted to the connecting groove 18. The decorative strip 13 passes through the installation strip 132 into the connecting groove 18 and is then connected and fixed relative to the connecting groove 18, thereby realizing the detachable connection of the decorative strip 13. The connection structure is simple and efficient.

[0062] Preferably, the cross-section of the connecting groove 18 is a circular hole with an opening. The mounting strip 132 includes a cylindrical strip adapted to the circular hole and a connecting strip connected to one side of the cylindrical strip. The end of the connecting strip away from the cylindrical strip is connected to the decorative panel 131. That is, the mounting strip 132 and the connecting groove 18 cooperate with each other through the structure of the cylindrical hole and the cylindrical strip, resulting in a tighter connection. The arc-shaped structure of the cylindrical strip can extend the communication path between the two opposite sides of the decorative strip 13, thereby improving the sealing effect of the decorative strip 13 relative to the first connecting wall 111 and / or the second connecting wall 121, and avoiding glue overflow when the foamed thermal insulation material 2 is injected.

[0063] Please combine Figure 4 More preferably, the connecting groove 18 includes an arcuate flange 181 extending along the opening, and the connecting strip is provided with an arcuate sealing groove 1321 adapted to the arcuate flange 181. Through the tight fit between the arcuate flange 181 and the arcuate sealing groove 1321, the sealing effect of the decorative strip 13 relative to the first connecting wall 111 and / or the second connecting wall 121 is further enhanced, and glue overflow is avoided.

[0064] like Figure 3 As shown, further, the decorative strip 13 has a slot 1311 on the side away from the heat insulation cavity 14. The slot 1311 is opened on the decorative panel 131 and is used to snap on the adhesive strip. Specifically, pressure-equalizing adhesive strips, sealing adhesive strips, water-blocking adhesive strips, etc. can be snapped on the slot 1311 to meet different usage requirements, and solve the problem that the foamed heat insulation material 2 cannot be grooved to install adhesive strips, making it more applicable.

[0065] like Figure 5 and Figure 6 As shown, the mold 3 also includes a pressure strip 34, which is used to press the low-energy-consumption heat-insulating profile 1. The upper mold 32 is used to abut against the pressure strip 34 and press the low-energy-consumption heat-insulating profile 1 into the mounting slot 311 through the pressure strip 34. Thus, during the process of fastening the upper mold 32 relative to the lower mold 31, the pressure strip 34 is used to press and fix the low-energy-consumption heat-insulating profile 1, ensuring the accuracy of the molding cavity. Compared with the method of directly abutting the low-energy-consumption heat-insulating profile 1 through the upper mold 32, the wear of the low-energy-consumption heat-insulating profile 1 during the movement of the upper mold 32 can be avoided, effectively protecting the low-energy-consumption heat-insulating profile 1.

[0066] Please combine Figure 7Preferably, the upper mold 32 further includes an exhaust wall 322 connected to the edge of the forming wall 321. The shape of the exhaust wall 322 is adapted to the edge of the heat insulation cavity 14. The pressure strip 34 is arranged along the pressing direction of the upper mold 32. The pressure strip 34 is also used to limit the lowest pressing position of the upper mold 32 to a state where there is a gap between the exhaust wall 322 and the edge of the heat insulation cavity 14, thereby forming an exhaust channel through the gap between the exhaust wall 322 and the edge of the heat insulation cavity 14.

[0067] When the molding wall 321 is pressed onto the heat insulation cavity 14, the exhaust wall 322 and the edge of the heat insulation cavity 14 form an exhaust channel. During the foaming process of the foamed heat insulation material 2, the exhaust channel can be used to discharge excess gas and excess glue, so that the foamed heat insulation material 2 is tightly molded in the heat insulation cavity 14, ensuring the molding density of the foamed heat insulation material 2, improving the connection strength of the foamed heat insulation material 2 relative to the heat insulation cavity 14, thereby improving the overall strength of the low-energy heat insulation profile 1.

[0068] More preferably, the exhaust wall 322 is provided with at least one corner structure, which achieves the exhaust effect while preventing the foamed thermal insulation material 2 from overflowing directly, and ensuring that the reaction pressure of the foamed thermal insulation material 2 meets the requirements.

[0069] Please combine Figure 5 and Figure 6 The pressure strip 34 is provided with a positioning plate 341, and the upper mold 32 also includes a plurality of positioning protrusions 323 arranged at intervals along the width direction of the positioning plate 341 and used to abut against the positioning plate 341. The positioning protrusions 323 and the positioning plate 341 cooperate with each other to position the lowest pressing position of the upper mold 32, ensuring positioning accuracy. Compared with the surface-to-surface contact method, it can also increase pressure and improve the pressing effect.

[0070] Preferably, the lower mold 31 is further provided with a limiting wall 312, and the pressure strip 34 includes a clamping part 342. The clamping part 342 is used to clamp and fix the side wall of the low-energy heat insulation profile 1 to the limiting wall 312, and the clamping direction of the clamping part 342 is perpendicular to the pressing direction of the pressure strip 34. In order to simultaneously limit and fix the low-energy heat insulation profile 1 in multiple directions through the clamping action of the clamping part 342 and the pressing action of the pressure strip 34, the positioning accuracy of the low-energy heat insulation profile 1 is guaranteed, thereby improving the molding accuracy of the foamed heat insulation material 2.

[0071] Furthermore, pressure strips 34 are provided on both sides of the mounting slot 311, and the low-energy heat insulation profile 1 is fixed on both sides by multiple pressure strips 34, thereby enhancing the fixing effect and stability.

[0072] Preferably, the lower mold 31 is provided with an installation groove 313 in the installation slot 311. The mold 3 also includes a buffer strip 35, which is embedded in the installation groove 313 and is used to elastically abut against the low-energy heat-insulating profile 1. The buffer strip 35 is made of flexible material to provide buffer protection for the low-energy heat-insulating profile 1 and prevent the low-energy heat-insulating profile 1 from being scratched by the lower mold 31.

[0073] More preferably, the mounting groove 313 is a cylindrical structure with a notch on one side facing the mounting slot 311. The buffer strip 35 is a nylon rod adapted to the cylindrical structure. The nylon rod passes through the mounting groove 313 and at least part of the structure protrudes along the notch, so as to buffer and protect the low-energy heat-insulating profile 1 through the exposed position of the nylon rod. Compared with the method of using rubber strips, the nylon rod is easier to insert or remove, and can be preheated together with the mold 3 without affecting the performance.

[0074] Preferably, the mounting slot 311 is provided with mounting grooves 313 on both sides of the opposite side along the downward pressing direction of the molding wall 321. The buffer strips 35 are provided in a one-to-one correspondence with the mounting grooves 313, so that the multiple buffer strips 35 respectively abut against the opposite sides of the low-energy heat-insulating profile 1, thereby achieving buffer protection of the low-energy heat-insulating profile 1 and driving the low-energy heat-insulating profile 1 to automatically center and fix it, so that the low-energy heat-insulating profile 1 is accurately fixed in the center position of the mounting slot 311, further improving the positioning accuracy. Furthermore, since the mounting grooves 313 are provided on the side of the mounting slot 311 along the downward pressing direction of the molding wall 321, they will not affect the fitting accuracy between the molding wall 321 and the low-energy heat-insulating profile 1, which is conducive to accurately controlling the width of the exhaust channel and ensuring the molding effect of the foamed heat-insulating material 2.

[0075] Preferably, the molding wall 321 is an arc-shaped structure protruding towards the mounting slot 311, so that the molding wall 321 abuts against the foamed thermal insulation material 2 with better force-bearing effect, improves the molding effect of the foamed thermal insulation material 2, and can guide excess gas to the exhaust channel for discharge through the arc-shaped structure on the molding wall 321.

[0076] Preferably, the locking assembly 33 includes a fixed base 331 and a movable buckle 332. The fixed base 331 is fixedly installed on the lower mold 31, and the movable buckle 332 is hinged to the fixed base 331. The upper mold 32 is provided with a hook 324 that matches the movable buckle 332. The movable buckle 332 is used to rotate relative to the fixed base 331 to engage or disengage from the hook 324. Rotating the movable buckle 332 can engage or disengage from the hook 324. The locking structure is simple and efficient, with good locking effect and convenient and quick use.

[0077] Preferably, the low-energy-consumption heat-insulating profile preparation mold 3 further includes a hinge 36. The hinge 36 and the locking component 33 are respectively disposed at opposite ends of the lower mold 31. The upper mold 32 is hinged to the lower mold 31 through the hinge 36. The hinge 36 allows the upper mold 32 to rotate and open, while the hinge 36 and the locking component 33 respectively fix the opposite ends of the upper mold 32. Only one locking component 33 is needed to completely lock and fix the upper mold 32.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for preparing a low-energy-consumption thermal insulation profile, characterized in that, The method for preparing a foamed thermal insulation strip in the thermal insulation cavity (14) of a low-energy thermal insulation profile (1) using a mold (3) includes a lower mold (31) and an upper mold (32). The lower mold (31) is provided with an installation slot (311) for embedding the low-energy thermal insulation profile (1), and the upper mold (32) includes a molding wall (321) adapted to the glue injection opening of the thermal insulation cavity (14). The low-energy thermal insulation profile (1) includes a first profile (11) and a second profile (12) arranged opposite to each other, and a decorative strip (13) disposed between the first profile (11) and the second profile (12). The decorative strip (13) together with the first profile (11) and the second profile (12) forms the thermal insulation cavity (14). The method for preparing the low-energy thermal insulation profile includes the following steps: S100: Insert the low-energy thermal insulation profile (1) into the mounting slot (311) of the lower mold (31); S200: The mold (3) and the low-energy heat-insulating profile (1) are heated and preheated as a whole; S300: Inject foamed thermal insulation material (2) into the thermal insulation cavity (14) of the low-energy thermal insulation profile (1); S400: Press the upper mold (32) onto the lower mold (31) so that the molding wall (321) of the upper mold (32) covers the glue injection opening of the heat insulation cavity (14) and together with the heat insulation cavity (14) to form a molding cavity, thereby allowing the foamed heat insulation material (2) to be automatically formed in the molding cavity. The reaction pressure of the foamed heat insulation material (2) in the molding cavity is 140~160KPa.

2. The method for preparing low-energy thermal insulation profiles according to claim 1, characterized in that, The foamed thermal insulation material (2) includes isocyanate and polyether polyol. The polyether polyol material contains a catalyst, a foaming agent, a homogenizer and a flame retardant. The mass ratio of the isocyanate to the polyether polyol is 1:1.

1.

3. The method for preparing low-energy thermal insulation profiles according to claim 2, characterized in that, Step S200 specifically includes: preheating the mold (3) and the low-energy heat-insulating profile (1) to 35℃~50℃.

4. The method for preparing low-energy thermal insulation profiles according to claim 2 or 3, characterized in that, Step S300 specifically includes: S301: Calculate the preset amount of adhesive based on the foaming characteristics of the foamed thermal insulation material (2) and the volume of the thermal insulation cavity (14), and control the reaction pressure of the foamed thermal insulation material (2) in the molding cavity to be 140~160KPa through the preset amount of adhesive. S302: Inject foamed thermal insulation material (2) into the thermal insulation cavity (14) of the low-energy thermal insulation profile (1) according to the preset injection amount.

5. The method for preparing low-energy thermal insulation profiles according to claim 4, characterized in that, Step S302 specifically includes: adjusting the injection gun nozzle of the injection equipment to the central axis of the heat insulation cavity (14), using a linear drive device to drive the mold (3) to move at a constant speed along the length direction of the low-energy heat insulation profile (1), and simultaneously injecting foamed heat insulation material (2) into the heat insulation cavity (14) of the low-energy heat insulation profile (1) through the injection gun nozzle according to the preset injection amount.

6. The method for preparing low-energy thermal insulation profiles according to claim 1, characterized in that, The upper mold (32) also includes an exhaust wall (322) connected to the edge of the forming wall (321). The mold (3) also includes a pressure strip (34) for pressing on the low-energy heat-insulating profile (1). The pressure strip (34) is arranged along the pressing direction of the upper mold (32). The pressure strip (34) is also used to limit the lowest pressing position of the upper mold (32) to a state where there is a gap between the exhaust wall (322) and the edge of the heat insulation cavity (14), thereby forming an exhaust channel through the gap between the exhaust wall (322) and the edge of the heat insulation cavity (14).

7. The method for preparing low-energy thermal insulation profiles according to claim 1, characterized in that, The lower mold (31) is provided with an installation groove (313) in the installation slot (311). The installation slot (311) is provided with the installation groove (313) on both sides of the pressing direction of the molding wall (321). The mold (3) also includes a buffer strip (35) embedded in the installation groove (313) and used to elastically abut against the low energy consumption heat insulation profile (1).

8. The method for preparing low-energy thermal insulation profiles according to claim 1, characterized in that, The first profile (11) includes a first connecting wall (111) facing the second profile (12), and the second profile (12) includes a second connecting wall (121) facing the first profile (11). The first end of the decorative strip (13) is detachably connected to the first connecting wall (111), and the second end of the decorative strip (13) is detachably connected to the second connecting wall (121). The decorative strip (13), the first connecting wall (111), and the second connecting wall (121) together form a heat insulation cavity (14).

9. The method for preparing low-energy thermal insulation profiles according to claim 8, characterized in that, The first connecting wall (111) and / or the second connecting wall (121) are provided with connecting grooves (18). The decorative strip (13) includes a decorative panel (131) and an mounting strip (132) connected to the decorative panel (131) and passing through the connecting groove (18). The cross-section of the connecting groove (18) is a circular hole with an opening. The mounting strip (132) includes a cylindrical strip adapted to the circular hole and a connecting strip connected to one side of the cylindrical strip. The end of the connecting strip away from the cylindrical strip is connected to the decorative panel (131). The connecting groove (18) includes an arcuate flange (181) extending along the opening. The connecting strip is provided with an arcuate sealing groove (1321) adapted to the arcuate flange (181).

10. The method for preparing low-energy thermal insulation profiles according to claim 1, characterized in that, The inner wall of the insulation cavity (14) is provided with a serrated structure (15) for attaching the foamed insulation material (2) and / or with T-shaped barbs (16).

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