Co-extrusion forming energy-saving door and window profile composite structure and preparation method and system thereof

Abstract

The invention discloses a co-extrusion forming energy-saving door and window profile composite structure which comprises a profile composite structure body, the profile composite structure body comprises an indoor side aluminum alloy lining and an outdoor side aluminum alloy lining, and a heat insulation strip is further arranged between the indoor side aluminum alloy lining and the outdoor side aluminum alloy lining. An indoor side coating material is arranged on the outer wall of the indoor side aluminum alloy lining, an indoor side co-extrusion surface layer is arranged on the indoor side coating layer, an outdoor side coating material is arranged on the outer wall of the outdoor side aluminum alloy lining, and an outdoor side co-extrusion surface layer is arranged on the outdoor side coating layer. According to the co-extrusion forming energy-saving door and window sectional material composite structure, good energy-saving and heat-insulating effects can be achieved through the indoor side coating material and the outdoor side coating material; and the indoor side co-extrusion surface layer and the outdoor side co-extrusion surface layer have the characteristics of good weather resistance, ultraviolet resistance, high glossiness, good mechanical property, chemical resistance and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving door and window profiles. More specifically, the present invention relates to a co-extrusion molded energy-saving door and window profile composite structure, a preparation method thereof, and a system thereof. Background Art

[0002] With the continuous improvement of the requirements for energy conservation and environmental protection in the construction industry, the research and development of energy-saving door and window profiles have become the focus of industry attention. Traditional door and window profiles have certain deficiencies in terms of heat insulation, heat preservation, durability, etc. For example, although aluminum alloy doors and windows have high strength and good aesthetics, their thermal conductivity coefficient is relatively large, and their heat insulation and heat preservation performance are poor. In winter, it is easy to cause heat loss indoors, and in summer, it is easy to make outdoor heat enter the room, resulting in increased energy consumption. Although plastic doors and windows have good heat insulation and heat preservation performance, their strength is relatively low, and problems such as deformation are likely to occur during long-term use. Aluminum-clad plastic door and window profiles combine the advantages of aluminum alloy and plastic, and have good heat insulation and heat preservation performance and strength. However, the existing aluminum-clad plastic door and window profiles still need to be improved in manufacturing processes and structural designs to further improve their performance and production efficiency. The existing technologies have the following problems:

[0003] 1. Existing aluminum alloy doors and windows have problems of significant thermal bridge effect and poor heat preservation performance; 2. Traditional through-bar type heat-insulated aluminum alloy profiles have defects such as strength attenuation and complex processing; 3. Pure plastic profiles have defects such as insufficient rigidity, poor durability, poor weather resistance, and environmental pollution problems during the profile production process and door and window processing process; 4. Existing composite processes (such as internal cladding) have problems such as poor bonding force, poor durability of the surface film covering process, unsatisfactory energy-saving effect, and low production efficiency; 5. Existing composite processes need to perform film covering on the indoor side of the outer surface of the cladding material, and the film covering has problems such as poor weather resistance, poor ultraviolet resistance, and easy peeling off; 6. For the existing door and window profile structures, it is difficult to balance energy conservation, heat preservation and structural strength; during the forming process of door and window profiles, there are problems such as thermal deformation of plastic materials and structural stability. Therefore, it is necessary to propose a co-extrusion molded energy-saving door and window profile composite structure, a preparation method thereof, and a system thereof to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in detail in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a co-extrusion molded energy-saving door and window profile composite structure, a preparation method thereof, and a system thereof, including:

[0006] The main body of the profile composite structure, the profile composite structure main body includes an indoor-side aluminum alloy inner lining and an outdoor-side aluminum alloy inner lining. There is also a heat insulation strip arranged between the indoor-side aluminum alloy inner lining and the outdoor-side aluminum alloy inner lining. An indoor-side covering material is arranged on the outer wall of the indoor-side aluminum alloy inner lining. An indoor-side co-extrusion surface layer is arranged on the indoor-side covering layer. An outdoor-side covering material is arranged on the outer wall of the outdoor-side aluminum alloy inner lining. An outdoor-side co-extrusion surface layer is arranged on the outdoor-side covering layer.

[0007] For the co-extrusion molding energy-saving door and window profile composite structure according to an embodiment of the present invention, T-shaped strengthening buckles are arranged on the outer walls of both the indoor-side aluminum alloy inner lining and the outdoor-side aluminum alloy inner lining.

[0008] For the co-extrusion molding energy-saving door and window profile composite structure according to an embodiment of the present invention, the profile composite structure main body is prepared by the following preparation method, and the preparation method includes the following steps:

[0009] Step 1: Aluminum alloy pretreatment stage;

[0010] Step 2: Composite co-extrusion stage;

[0011] Step 3: Post-treatment process stage.

[0012] For the co-extrusion molding energy-saving door and window profile composite structure according to an embodiment of the present invention, the aluminum alloy pretreatment stage includes the following steps:

[0013] Step 1.1: Put aluminum ingots into a furnace for heating and melting;

[0014] Step 1.2: When the aluminum alloy reaches the set temperature, use the corresponding extrusion die through an extruder to extrude the aluminum alloy raw material in the furnace into a profile base material. The extruded profile base material is strip-shaped and is cut to the required length according to needs;

[0015] Step 1.3: Perform surface treatment on the extruded profile base material; spray an interface adhesive on the aluminum lining of the profile base material to obtain an aluminum lining of the profile base material with adhesive; load the aluminum lining of the profile base material with adhesive through an aluminum lining loader; preheat the aluminum lining of the profile base material with adhesive to the set preheating temperature through a hollow heating pipe to obtain a preheated aluminum lining of the profile base material with adhesive; the preheated aluminum lining of the profile base material with adhesive enters the main co-extrusion die on the main extruder under the drive of a driving wheel.

[0016] For the co-extrusion molding energy-saving door and window profile composite structure according to an embodiment of the present invention, the composite co-extrusion stage includes the following steps:

[0017] Step 2.1: Use twin extruders to work together; Select the raw materials for the co-extruded surface layer. After being pressurized by the co-extrusion material screw machine, the raw materials for the co-extruded surface layer are transported to the heating mechanism of the co-extruded surface layer material for heating and melting; After heating and melting, the raw materials for the co-extruded surface layer form a molten co-extruded surface layer material; Select the coating material, which is transported to the coating material heating mechanism for heating and melting after being pressurized by the coating material screw machine.

[0018] The raw materials for the co-extruded surface layer include: ASA material, rigid PVC or UPVC (the ASA material includes alloy resin ASA material, the rigid PVC includes rigid polyvinyl chloride PVC, and the UPVC includes high-strength unplasticized polyvinyl chloride UPVC); The coating material includes: foamed PVC, CPVC or PC (the foamed PVC includes foamed polyvinyl chloride PVC, the CPVC includes heat-resistant plasticized polyvinyl chloride CPVC, and the PC includes thermoplastic elastomer polycarbonate PC).

[0019] Step 2.2: The main co-extrusion die on the main extruder first co-extrudes the coating material and the co-extruded surface to form a co-extruded composite layer.

[0020] Step 2.3: Through the auxiliary co-extrusion die on the auxiliary extruder, the co-extruded composite layer is co-extruded and compounded with the injection surface of the pre-heated strip rubber profile base material aluminum liner to form an aluminum-plastic coated surface layer co-extruded composite profile.

[0021] The main co-extrusion die on the main extruder includes: a covering material supply mechanism, a co-extrusion surface layer material supply mechanism, and a main co-extrusion composite mechanism; the main extruder includes: a main co-extrusion composite precision control mechanism; the main co-extrusion composite precision control mechanism respectively controls the supply amount of the covering material supply mechanism, the supply amount of the co-extrusion surface layer material supply mechanism, the heating temperature of the covering material heating mechanism, and the heating temperature of the co-extrusion surface layer material heating mechanism; the co-extrusion cavity of the main co-extrusion composite mechanism is fixedly arranged or intelligently adjusted according to the density of the co-extrusion material type or the thickness of the co-extrusion material; the covering material heating mechanism heats the covering material to the set covering heating temperature according to precise temperature control heating and keeps the temperature constant to obtain a molten covering material; according to the properties of the covering material, the co-extrusion composite precision control mechanism controls the covering material heating mechanism to adjust the precise temperature control heating to reach the set covering heating temperature; the covering material supply mechanism supplies and transports the covering material into the main co-extrusion die through the covering material inlet; the covering material inlet forms a plurality of branch cavities, and each branch cavity corresponds to a part of the covering material; the co-extrusion surface layer material heating mechanism heats the co-extrusion surface layer material to the set co-extrusion surface layer heating temperature according to precise temperature control heating to obtain a molten co-extrusion surface layer material; the heated material flows into the co-extrusion cavity, and the temperature is lower than that at the initial heating; an initial heating compensation for the covering material is carried out for the temperature difference of the covering material during co-extrusion caused by the temperature reduction; the amount of the co-extrusion surface layer material is relatively less than that of the covering material, and the temperature reduction is more obvious and the temperature difference is larger when the co-extrusion surface layer material is co-extruded. The co-extrusion surface layer material heating mechanism carries out heating compensation for the co-extrusion surface layer material; the main co-extrusion composite mechanism co-extrudes and composites the molten covering material and the corresponding molten co-extrusion surface layer material respectively to form a composite co-extrusion layer.

[0022] For the co-extrusion formed energy-saving door and window profile composite structure according to the embodiment of the present invention, the thickness of the surface layer material of the co-extrusion surface in step 2.2 is 0.3-1.0 mm.

[0023] For the co-extrusion formed energy-saving door and window profile composite structure according to the embodiment of the present invention, it further includes step 2.4: the aluminum-plastic covered surface layer co-extrusion composite profile continues to move backward and passes through the embossing roller to emboss the surface of its co-extrusion surface layer.

[0024] For the co-extrusion formed energy-saving door and window profile composite structure according to the embodiment of the present invention, it further includes: step 2.5: grading cooling the profile substrate, wherein, the co-extruded composite profile is quickly cooled and shaped through a cooling and shaping die; further cooled through a water-cooling die, the water-cooling temperature is 40°C - 60°C, and after the cooling, it is air-dried. The air-cooling section uses room temperature, and it is quickly dried through a strong air flow fan.

[0025] For the co-extrusion formed energy-saving door and window profile composite structure according to the embodiment of the present invention, the post-treatment process stage of step 3 includes the following steps;

[0026] Step 3.1: Carry out strip insertion and lamination on the profile substrate after co-extrusion.

[0027] A preparation system for a co-extrusion molded energy-saving door and window profile composite structure, comprising: a preparation system for a co-extrusion molded energy-saving door and window profile composite structure as described above;

[0028] Aluminum alloy pretreatment subsystem: Conduct aluminum alloy pretreatment; put aluminum ingots into a furnace for heating and melting; when the aluminum alloy reaches the set temperature, use the corresponding extrusion die on an extruder to extrude the aluminum alloy raw material in the furnace into a profile substrate. The extruded profile substrate is strip-shaped and is cut to the required length according to demand; conduct surface treatment on the extruded profile substrate;

[0029] Co-extrusion lamination subsystem: Conduct co-extrusion lamination; use two extruders to work together; the main co-extrusion die on the main extruder first conducts co-extrusion lamination on the coating material and the co-extrusion surface to form a co-extrusion layer; through the auxiliary co-extrusion die on the auxiliary extruder, co-extrusion laminate the co-extrusion layer with the injection surface of the pre-heated tape-coated profile substrate aluminum liner to form an aluminum-plastic coated surface layer co-extrusion composite profile;

[0030] Post-treatment lamination subsystem, conduct post-treatment; carry out strip insertion and lamination on the profile substrate after co-extrusion.

[0031] Compared with the prior art, the present invention at least includes the following beneficial effects:

[0032] The present invention provides a co-extrusion molded energy-saving door and window profile composite structure. The main body of the profile composite structure includes an indoor-side aluminum alloy liner and an outdoor-side aluminum alloy liner. An insulating strip is also arranged between the indoor-side aluminum alloy liner and the outdoor-side aluminum alloy liner. An indoor-side coating material is installed on the outer wall of the indoor-side aluminum alloy liner. Moreover, the indoor-side co-extrusion surface layer and the outdoor-side co-extrusion surface layer have characteristics such as good weather resistance, ultraviolet resistance, high gloss, good mechanical properties, and chemical resistance.

[0033] For the co-extrusion molded energy-saving door and window profile composite structure, its preparation method and system of the present invention, other advantages, objectives, and features of the present invention will be partially reflected by the following description and partially understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0035] Figure 1 It is a schematic structural diagram of the main body of the profile composite structure in the present invention.

[0036] Figure 2This is a diagram of an embodiment of the process architecture of the present invention.

[0037] Figure 3 This is a schematic diagram of the composite co-extrusion die structure of the present invention. Detailed implementation manners

[0038] The following further describes the present invention in detail in conjunction with the accompanying drawings and embodiments, so that those skilled in the art can implement it according to the description in the specification.

[0039] It should be understood that terms such as "having", "including", and "comprising" used herein do not exclude the presence or addition of one or more other elements or their combinations.

[0040] As Figure 1 shown, the present invention provides a composite structure of a co-extruded energy-saving door and window profile, including: a main body 1 of the profile composite structure, where the main body 1 of the profile composite structure includes an indoor-side aluminum alloy lining 11 and an outdoor-side aluminum alloy lining 12. An insulating strip 13 is further arranged between the indoor-side aluminum alloy lining 11 and the outdoor-side aluminum alloy lining 12. Among them, the insulating strip 13 is a nylon material PA66 insulating strip; an indoor-side covering material 14 is installed on the outer wall of the indoor-side aluminum alloy lining 11, and an outdoor-side covering material 15 is installed on the outer wall of the outdoor-side aluminum alloy lining 12. The indoor-side covering material 14 and the outdoor-side covering material 15 can achieve a good energy-saving and heat-insulating effect. Moreover, the indoor-side covering layer 14 has an indoor-side co-extruded surface layer 141, and the outdoor-side covering material 15 has an outdoor-side co-extruded surface layer 151. The indoor-side co-extruded surface layer 141 and the outdoor-side co-extruded surface layer 151 have characteristics such as good weather resistance, ultraviolet resistance, high gloss, good mechanical properties, and chemical resistance.

[0041] Furthermore, T-shaped strengthening buckles 16 are designed on the outer walls of both the indoor-side aluminum alloy lining 11 and the outdoor-side aluminum alloy lining 12. Correspondingly, T-shaped strengthening grooves corresponding to the T-shaped strengthening buckles 16 are respectively provided on the inner walls of the indoor-side covering material 14 and the outdoor-side covering material 15. In this way, after the indoor-side covering material 14 and the outdoor-side covering material 15 are installed on the outer walls of the indoor-side aluminum alloy lining 11 and the outdoor-side aluminum alloy lining 12, the T-shaped strengthening grooves are buckled onto the T-shaped strengthening buckles 16, increasing the structural strength of the indoor-side covering material 14 and the outdoor-side covering material 15 respectively with the indoor-side aluminum alloy lining 11 and the outdoor-side aluminum alloy lining 12, and even after long-term use, no deformation occurs, avoiding the shedding caused by deformation.

[0042] Furthermore, the main body 1 of the profile composite structure of the present invention is prepared by the following preparation method, and the preparation method includes the following steps:

[0043] Step 1: Aluminum alloy pretreatment stage;

[0044] Step 2: Co - extrusion stage;

[0045] Step 3: Post - treatment process stage.

[0046] Among them, the above - mentioned aluminum alloy pretreatment stage includes the following steps:

[0047] Step 1.1: Put the aluminum ingot into the furnace for heating and melting;

[0048] Step 1.2: When the aluminum alloy reaches the set temperature, use the corresponding extrusion die through the extruder to extrude the aluminum alloy raw material in the furnace into a profile substrate. The extruded profile substrates (indoor - side aluminum alloy lining 11, outdoor - side aluminum alloy lining 12) are strip - shaped and are cut to the required length according to the demand;

[0049] Step 1.3: Conduct surface treatment on the extruded profile substrate; spray the interface adhesive on the aluminum lining of the profile substrate to obtain the profile substrate aluminum lining with adhesive; the profile substrate aluminum lining with adhesive is fed through the aluminum lining loader; pre - heat the profile substrate aluminum lining with adhesive to the set pre - heating temperature through the hollow heating pipe to obtain the pre - heated profile substrate aluminum lining with adhesive; the pre - heated profile substrate aluminum lining with adhesive enters the main co - extrusion die on the main extruder under the drive of the driving wheel; the set pre - heating temperature includes: 178 °C, 181 °C or 185 °C.

[0050] Among them, the above - mentioned co - extrusion stage includes the following steps:

[0051] Step 2.1: Use two extruders to work together; select the raw materials for the co - extrusion surface layer. The raw materials for the co - extrusion surface layer are pressurized by the co - extrusion material screw machine and then transported to the heating mechanism of the co - extrusion surface layer material for heating and melting; after the raw materials for the co - extrusion surface layer are heated and melted, a molten co - extrusion surface layer material is formed; select the coating material, which is pressurized by the coating material screw machine and then transported to the heating mechanism of the coating material for heating and melting;

[0052] The raw materials for the co - extrusion surface layer include: ASA material, rigid PVC or UPVC (the ASA material includes alloy resin ASA material, the rigid PVC includes rigid polyvinyl chloride PVC, and the UPVC includes high - strength unplasticized polyvinyl chloride UPVC); the coating materials include: foamed PVC, CPVC or PC (the foamed PVC includes foamed polyvinyl chloride PVC, the CPVC includes heat - resistant plasticized polyvinyl chloride CPVC, and the PC includes thermoplastic elastomer polycarbonate PC);

[0053] Step 2.2: The main co - extrusion die on the main extruder first conducts co - extrusion on the coating material and the co - extrusion surface to form a co - extrusion layer;

[0054] Step 2.3: Through the auxiliary co - extrusion die on the auxiliary extruder, co - extrude and compound the co - extrusion layer with the injection surface of the pre - heated profile substrate aluminum lining with adhesive to form an aluminum - plastic coated surface layer co - extruded composite profile;

[0055] The main co-extrusion die on the main extruder includes: a coating material supply mechanism, a co-extrusion surface layer material supply mechanism, and a main co-extrusion composite mechanism; the main extruder includes: a main co-extrusion composite precision control mechanism; the main co-extrusion composite precision control mechanism controls respectively the supply quantity of the coating material supply mechanism, the supply quantity of the co-extrusion surface layer material supply mechanism, the heating temperature of the coating material heating mechanism, and the heating temperature of the co-extrusion surface layer material heating mechanism; the co-extrusion cavity of the main co-extrusion composite mechanism is fixedly arranged or adjusted intelligently according to the density of the co-extrusion material type or the thickness of the co-extrusion material; the coating material heating mechanism heats the coating material to the set coating heating temperature according to precise temperature control heating and keeps the temperature constant to obtain a molten state coating material; the set coating heating temperature includes 173°C, 183°C, 193°C or 203°C, and according to the properties of the coating material, the main co-extrusion composite precision control mechanism controls the coating material heating mechanism to adjust the precise temperature control heating to reach the set coating heating temperature; the coating material supply mechanism supplies and transports the coating material into the interior of the main co-extrusion die through the coating material inlet; the coating material inlet forms a plurality of branch cavities, and each branch cavity corresponds to a part of the coating material; the plurality of branch cavities include a first branch cavity or a second branch cavity; the first branch cavity or the second branch cavity corresponds to a first coating part and a second coating part respectively; the co-extrusion surface layer material heating mechanism heats the co-extrusion surface layer material to the set co-extrusion surface layer heating temperature according to precise temperature control heating to obtain a molten state co-extrusion surface layer material; the set co-extrusion surface layer heating temperature includes 176°C, 186°C, 196°C or 206°C; when the co-extrusion surface layer material heated by the co-extrusion surface layer material heating mechanism is extruded thinner, the surface temperature drop during co-extrusion reaches the preset precision co-extrusion temperature in the range of about 3.5°C - 4.5°C; when the die temperature gradually rises to the preset precision co-extrusion temperature, the set co-extrusion surface layer heating temperature gradually approaches the preset precision co-extrusion temperature to precisely balance the co-extrusion temperature difference; after heating, the material flows into the co-extrusion cavity, and the temperature is lower than that during initial heating; an initial heating compensation for the coating material is carried out for the temperature difference of the coating material during co-extrusion caused by the temperature reduction; the co-extrusion surface layer material is relatively less in quantity than the coating material, and the temperature drop and temperature difference are more obvious during co-extrusion of the co-extrusion surface layer material, so the co-extrusion surface layer material heating mechanism conducts heating compensation for the co-extrusion surface layer material; the main co-extrusion composite mechanism co-extrusion composites respectively the molten state coating material corresponding to the first coating part of the first branch cavity and the corresponding molten state co-extrusion surface layer material, or the molten state coating material corresponding to the second coating part of the second branch cavity and the corresponding molten state co-extrusion surface layer material to form a coating surface layer composite structure for the first coating part and a coating surface layer composite structure for the second coating part; a composite co-extrusion layer is formed.

[0056] Among them, in step 2.2 above, the thickness of the surface layer material of the co-extrusion surface is 0.3 - 1.0 mm, and preferably, the thickness of the surface layer material is 0.5 mm.

[0057] The co-extrusion layer here is the combination of the above-mentioned indoor covering material 14, indoor co-extrusion surface layer 141, or the outdoor covering material 15, outdoor co-extrusion surface layer 151; the co-extrusion surface is the above-mentioned indoor co-extrusion surface layer 141, outdoor co-extrusion surface layer 151;

[0058] Among them, it also includes step 2.4: The aluminum-plastic covered surface layer co-extruded composite profile continues to move backward through the embossing rollers to emboss the surface of its co-extrusion surface layer.

[0059] Among them, it also includes step 2.5: Classify and cool the profile base material. Among them, the co-extruded composite profile is quickly cooled and shaped through the cooling and shaping die; it is further cooled through the water-cooling die, and the water-cooling temperature is 40°C - 60°C. After cooling, it is air-dried. The air-cooling section uses room temperature, and it is quickly dried through a strong air flow fan.

[0060] Finally, the post-treatment process stage of step 3 includes the following steps; step 3.1: Carry out strip insertion and lamination on the co-extruded composite profile base material.

[0061] Through the above preparation method, mainly through the co-extrusion stage, the indoor covering material 14 and the outdoor covering material 15 are respectively installed on the indoor aluminum alloy inner lining 11 and the outdoor aluminum alloy inner lining 12 of the profile, realizing the combination of the metal and polymer interfaces. By adding co-extrusion surface layers (indoor co-extrusion surface layer 141, outdoor co-extrusion surface layer 151) on the outer surfaces of the covering materials (indoor covering material 14, outdoor covering material 15), the profile base material has an ultra-low thermal conductivity, a simple production process and subsequent deep processing technology, beautiful appearance, and a long weather resistance life. The composite energy-saving door and window profile with a high-strength combination of the profile base material and the heat insulation material solves the deficiencies of the prior art.

[0062] A preparation system for a co-extrusion formed energy-saving door and window profile composite structure, comprising: a preparation system for a co-extrusion formed energy-saving door and window profile composite structure as described; an aluminum alloy pretreatment subsystem: during the aluminum alloy pretreatment process, the aluminum alloy profile is cooled by a full-circumference air flow uniform cooling device during extrusion; a composite co-extrusion subsystem: performing composite co-extrusion; using two extruders to work together; the main co-extrusion die on the main extruder first performs composite co-extrusion on the coating material and the co-extrusion surface to form a composite co-extrusion layer; the co-extrusion die on the auxiliary extruder co-extrudes and composites the composite co-extrusion layer with the injection molding surface of the pre-heated rubber-coated profile base material aluminum liner to form an aluminum-plastic coated surface layer co-extrusion composite profile; the main co-extrusion die on the main extruder includes: a coating material supply mechanism, a co-extrusion surface layer material supply mechanism, and a main co-extrusion composite mechanism; the main extruder includes: a main co-extrusion composite precision control mechanism; the main co-extrusion composite precision control mechanism respectively controls the supply amount of the coating material supply mechanism, the supply amount of the co-extrusion surface layer material supply mechanism, the heating temperature of the coating material heating mechanism, and the heating temperature of the co-extrusion surface layer material heating mechanism; the co-extrusion cavity of the main co-extrusion composite mechanism is fixedly arranged or intelligently adjusted according to the density of the co-extrusion material type or the thickness of the co-extrusion material; the coating material heating mechanism heats the coating material to the set coating heating temperature according to precision temperature control heating and keeps the temperature constant to obtain a molten state coating material; the set coating heating temperature includes 173°C, 183°C, 193°C, or 203°C, and according to the properties of the coating material, the coating material heating mechanism is controlled by the co-extrusion composite precision control mechanism to adjust the precision temperature control heating to reach the set coating heating temperature; the coating material supply mechanism supplies and transports the coating material into the main co-extrusion die through the coating material inlet; the coating material inlet forms a plurality of branch pipe cavities, and each branch pipe cavity corresponds to a part of the coating material; the plurality of branch pipe cavities include a first branch cavity or a second branch cavity; the first branch cavity or the second branch cavity respectively corresponds to a first coating part and a second coating part; the co-extrusion surface layer material heating mechanism heats the co-extrusion surface layer material to the set co-extrusion surface layer heating temperature according to precision temperature control heating to obtain a molten state co-extrusion surface layer material; the set co-extrusion surface layer heating temperature includes 176°C, 186°C, 196°C, or 206°C; the surface temperature drop of the co-extrusion surface layer material after heating and extrusion during co-extrusion is about 3.5°C - 4...Reach the preset precise co-extrusion temperature in the 5°C range; when the die temperature gradually rises to the preset precise co-extrusion temperature, set the co-extrusion surface layer heating temperature to gradually approach the preset precise co-extrusion temperature, precisely balance the co-extrusion temperature difference; after heating, the material flows into the co-extrusion cavity, and the temperature decreases compared to the initial heating; perform initial heating compensation for the temperature difference of the coating material during co-extrusion caused by the temperature decrease; the amount of co-extrusion surface layer material is relatively less than that of the coating material, and the temperature decrease and temperature difference are more obvious when the co-extrusion surface material is co-extruded. The heating mechanism for the co-extrusion surface layer material performs heating compensation for the co-extrusion surface material; the main co-extrusion composite mechanism respectively co-extrudes and composites the molten coating material corresponding to the first coating part of the first branch cavity and the corresponding molten co-extrusion surface layer material, or the molten coating material corresponding to the second coating part of the second branch cavity and the corresponding molten co-extrusion surface layer material to form a composite structure of the coating surface layer at the first coating part and a composite structure of the coating surface layer at the second coating part; form a composite co-extrusion layer; the post-treatment composite subsystem performs post-treatment; perform strip insertion composite on the profile substrate after composite co-extrusion; significantly improve the structural stability of the door and window profiles and significantly improve the energy conservation and consumption reduction of the doors and windows.

[0063] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0064] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] Although the embodiments of the present invention have been disclosed as above, it is not limited to only the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated and described examples here.

Claims

1. A co-extrusion molded energy-saving door and window profile composite structure, characterized in that Including: The profile composite structure body, the profile composite structure body includes an indoor side aluminum alloy lining and an outdoor side aluminum alloy lining. An insulating strip is also arranged between the indoor side aluminum alloy lining and the outdoor side aluminum alloy lining. An indoor side covering material is arranged on the outer wall of the indoor side aluminum alloy lining. An indoor side co-extrusion surface layer is arranged on the indoor side covering layer. An outdoor side covering material is arranged on the outer wall of the outdoor side aluminum alloy lining. An outdoor side co-extrusion surface layer is arranged on the outdoor side covering layer.

2. The composite structure of an energy-saving door and window profile by co-extrusion molding according to claim 1, characterized in that T-shaped strengthening buckles are arranged on the outer walls of both the indoor side aluminum alloy lining and the outdoor side aluminum alloy lining.

3. A co-extrusion formed energy-saving door and window profile composite structure according to claim 1, characterized in that, The profile composite structure body is prepared by the following preparation method, and the preparation method includes the following steps: Step 1: Aluminum alloy pretreatment stage; Step 2: Composite co-extrusion stage; Step 3: Post-treatment process stage.

4. A co-extrusion molded energy-saving door and window profile composite structure according to claim 3, characterized in that, The aluminum alloy pretreatment stage includes the following steps: Step 1.1: Put the aluminum ingot into the furnace for heating and melting; Step 1.2: When the aluminum alloy reaches the set temperature, use the corresponding extrusion die through the extruder to extrude the aluminum alloy raw material in the furnace into a profile base material. The extruded profile base material is strip-shaped and is cut according to requirements; Step 1.3: Perform surface treatment on the extruded profile base material; spray the interface glue on the aluminum lining of the profile base material to obtain the aluminum lining of the profile base material with glue; the aluminum lining of the profile base material with glue is fed through the aluminum lining feeding machine; the aluminum lining of the profile base material with glue is preheated to the set preheating temperature through the hollow heating pipe to obtain the preheated aluminum lining of the profile base material with glue; the preheated aluminum lining of the profile base material with glue enters the main co-extrusion die on the main extruder under the drive of the driving wheel.

5. The composite structure of a co-extrusion formed energy-saving door and window profile according to claim 3, wherein, The composite co-extrusion stage includes the following steps: Step 2.1: Use two extruders to work together; select the raw materials for the co-extrusion surface layer. The raw materials for the co-extrusion surface layer are pressurized by the co-extrusion material screw machine and then transported to the heating mechanism for the co-extrusion surface layer material for heating and melting; after the raw materials for the co-extrusion surface layer are heated and melted, a molten co-extrusion surface layer material is formed; Select the covering material, pressurize it through the covering material screw machine and then transport it to the heating mechanism for the covering material for heating and melting; Step 2.2: The main co-extrusion die on the main extruder first performs composite co-extrusion on the covering material and the co-extrusion surface to form a composite co-extrusion layer; Step 2.3: Through the auxiliary co-extrusion die on the auxiliary extruder, co-extrusion and compounding are performed on the composite co-extrusion layer and the injection surface of the preheated aluminum lining of the profile base material with glue to form an aluminum-plastic covered surface layer co-extrusion composite profile; The main co-extrusion die on the main extruder includes: a covering material supply mechanism, a co-extruded surface layer material supply mechanism, and a main co-extrusion composite mechanism; the main extruder includes: a main co-extrusion composite precision control mechanism; the main co-extrusion composite precision control mechanism respectively controls the supply amount of the covering material supply mechanism, the supply amount of the co-extruded surface layer material supply mechanism, the heating temperature of the covering material heating mechanism, and the heating temperature of the co-extruded surface layer material heating mechanism; the co-extrusion cavity of the main co-extrusion composite mechanism is fixedly arranged or intelligently adjusted according to the density of the co-extrusion material type or the thickness of the co-extrusion material; the covering material heating mechanism heats the covering material to the set covering heating temperature according to precise temperature control heating and keeps the temperature constant to obtain a molten covering material; according to the properties of the covering material, the co-extrusion composite precision control mechanism controls the covering material heating mechanism to adjust the precise temperature control heating to reach the set covering heating temperature; the covering material supply mechanism supplies and transports the covering material into the main co-extrusion die through the covering material inlet; the covering material inlet forms a plurality of branch cavities, and each branch cavity corresponds to a part of the covering material; the co-extruded surface layer material heating mechanism heats the co-extruded surface layer material to the set co-extruded surface layer heating temperature according to precise temperature control heating to obtain a molten co-extruded surface layer material; the heated material flows into the co-extrusion cavity, and the temperature is lower than that at the initial heating; an initial heating compensation for the covering material is performed for the temperature difference of the covering material during co-extrusion caused by the temperature reduction; the amount of the co-extruded surface layer material is relatively less than that of the covering material, and the temperature reduction is more obvious and the temperature difference is larger during co-extrusion of the co-extruded surface layer material, so the co-extruded surface layer material heating mechanism performs heating compensation for the co-extruded surface layer material; the main co-extrusion composite mechanism co-extrudes and composites the molten covering material and the corresponding molten co-extruded surface layer material respectively to form a composite co-extrusion layer.

6. A co-extrusion molded energy-saving door and window profile composite structure according to claim 5, characterized in that, In step 2.2, the thickness of the surface layer material of the co-extruded surface is 0.3 - 1.0 mm.

7. A co-extrusion formed energy-saving door and window profile composite structure according to claim 5, characterized in that, It also includes step 2.4: The aluminum-plastic covered surface co-extruded composite profile continues to move backward and passes through an embossing roller to emboss the surface of its co-extruded surface layer.

8. A co-extrusion formed energy-saving door and window profile composite structure according to claim 5, characterized in that, It also includes: step 2.5: Hierarchical cooling is performed on the profile base material. Among them, the co-extruded composite profile is quickly cooled and shaped through a cooling and shaping die; further cooling is carried out through a water-cooling die, and the water-cooling temperature is 40°C - 60°C. After cooling, air drying is carried out, and the air-cooling section adopts room temperature, and rapid drying is carried out through a strong air flow fan.

9. A co-extrusion molded energy-saving door and window profile composite structure according to claim 4, characterized in that, The post-treatment process stage of step 3 includes the following steps; Step 3.1: Inserting and compounding the profile base material after co-extrusion and compounding.

10. A preparation system for a co-extrusion formed energy-saving door and window profile composite structure, characterized in that, Including: Adopting a preparation system for a co-extrusion formed energy-saving door and window profile composite structure as described in claim 1; Aluminum alloy pretreatment sub-system: performing aluminum alloy pretreatment; putting aluminum ingots into a furnace for heating and melting; when the aluminum alloy reaches the set temperature, using a corresponding extrusion die through an extruder to extrude the aluminum alloy raw material in the furnace into a profile base material, and the extruded profile base material is in a long strip shape and is cut according to requirements; performing surface treatment on the extruded profile base material; Composite co-extrusion sub-system: It performs composite co-extrusion; it uses two extruders to work together; the main co-extrusion die on the main extruder first performs composite co-extrusion on the covering material and the co-extrusion surface to form a composite co-extrusion layer; through the auxiliary co-extrusion die on the auxiliary extruder, the composite co-extrusion layer is co-extruded and compounded with the injection surface of the pre-heated rubber-profile base material aluminum liner to form an aluminum-plastic covered surface layer co-extruded composite profile; The main co-extrusion die on the main extruder includes: a covering material supply mechanism, a co-extrusion surface layer material supply mechanism, and a main co-extrusion compounding mechanism; the main extruder includes: a main co-extrusion compounding precision control mechanism; the main co-extrusion compounding precision control mechanism respectively controls the supply amount of the covering material supply mechanism, the supply amount of the co-extrusion surface layer material supply mechanism, the heating temperature of the covering material heating mechanism, and the heating temperature of the co-extrusion surface layer material heating mechanism; the co-extrusion cavity of the main co-extrusion compounding mechanism is fixedly arranged or intelligently adjusted according to the density of the co-extrusion material type or the thickness of the co-extrusion material; the covering material heating mechanism heats the covering material to the set covering heating temperature according to precise temperature control heating and keeps the temperature constant to obtain a molten state covering material; according to the properties of the covering material, the co-extrusion compounding precision control mechanism controls the covering material heating mechanism to adjust the precise temperature control heating to reach the set covering heating temperature; the covering material supply mechanism supplies and transports the covering material into the main co-extrusion die through the covering material inlet; the covering material inlet forms multiple branch cavities, and each branch cavity corresponds to a part of the covering material; the co-extrusion surface layer material heating mechanism heats the co-extrusion surface layer material to the set co-extrusion surface layer heating temperature according to precise temperature control heating to obtain a molten state co-extrusion surface layer material; the heated material flows into the co-extrusion cavity, and the temperature is lower than that at the initial heating; an initial heating compensation for the covering material is performed for the temperature difference of the covering material during co-extrusion caused by the temperature reduction; the amount of the co-extrusion surface layer material is relatively less than that of the covering material, and the temperature reduction is more obvious and the temperature difference is larger during the co-extrusion of the co-extrusion surface material, and the co-extrusion surface layer material heating mechanism performs heating compensation for the co-extrusion surface material; the main co-extrusion compounding mechanism co-extrudes and compounds the molten state covering material and the corresponding molten state co-extrusion surface layer material respectively to form a composite co-extrusion layer; Post-treatment composite sub-system, which performs post-treatment; it performs strip insertion and compounding on the profile base material after composite co-extrusion.

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