High-strength engineering plastic synthetic device and method for energy-saving building sound insulation materials

Abstract

The application relates to the technical field of engineering plastic processing, in particular to a high-strength engineering plastic synthesis device and method for energy-saving building sound insulation materials, which comprises a plastic extruder, a main motor and a material extruder; a co-extrusion die head is connected between the front ends of the plastic extruder and the material extruder, is used for guiding the confluence of plastic and materials to form, the co-extrusion die head is a Y-shaped flat tube, and a rectifying group is arranged in the rear end intersection of the co-extrusion die head, is used for rectifying the materials into a grid structure; the rectifying group comprises a rectifying plate inserted with the side wall of the rear end intersection of the co-extrusion die head, a rectifying roller rotationally connected below the rectifying plate and a servo motor coaxially connected with the rectifying roller. The materials are shunted to independent flow channels through the rectifying plate, the rotating rectifying grid guides the strip-shaped fibers output by the extrusion pipe to combine in movement, a grid sound absorption layer is formed, and the sound insulation effect is improved; under the driving of the servo motor, the fiber strips are combined into continuous grid structures on the roller surface, and the fiber integrity is reserved.

Description

Technical Field

[0001] This invention relates to the field of engineering plastics processing technology, specifically to a device and method for synthesizing high-strength engineering plastics for energy-saving building sound insulation materials. Background Technology

[0002] With the increasing standards for energy-efficient buildings, the requirements for lightweight, high-strength, and wide-band sound insulation performance of sound insulation materials are becoming increasingly stringent. Application number CN202111637042.2 discloses a polyurethane thermal insulation and sound insulation material for roller shutters and its preparation method. The polyurethane thermal insulation and sound insulation material uses polyether polyol, epoxidized soybean oil polyol, flame retardant, physical foaming agent, catalyst, chemical foaming agent, foam stabilizer, and viscosity reducer as component A; and polymethyl polyphenyl polyisocyanate as component B. The components A and B are mixed and poured at a mass ratio of 1:1-1.5. This polyurethane thermal insulation and sound insulation material for roller shutters introduces epoxidized soybean oil polyol and EO-terminated polyether polyol into the formula, making the polyurethane foam non-brittle at low temperatures and exhibiting good fluidity, flame retardancy, and light weight. The polyurethane material fills the cavity of the roller shutter door panel without changing the original appearance and usable space of the roller shutter, simplifying operation, improving the thermal insulation and sound insulation effect of the roller shutter, and reducing the overall energy consumption of the building.

[0003] However, although the polyurethane foam sound insulation material of the above patent can be filled by casting, it has significant defects: the foam material is mainly a closed-cell structure, and the mid-to-high frequency sound insulation relies on air resonance dissipation, resulting in insufficient sound insulation effect; it requires chemical foaming agents and high-temperature curing, and the curing process generates VOC emissions.

[0004] Existing engineering plastic sound insulation panels mostly employ lamination composite processes, but these suffer from weak interlayer bonding and disordered fiber orientation. Especially for asymmetric thin-layer structures containing fiber fillers, higher strength and sound absorption performance cannot be achieved. Therefore, there is an urgent need to develop a synthesis device and method that combines precise lamination control, in-situ fiber orientation, and low-carbon manufacturing. Summary of the Invention

[0005] To overcome the deficiencies in the prior art, the present invention aims to provide a high-strength engineering plastic synthesis device and method for sound insulation materials in energy-saving buildings. Through the acoustic synergistic mechanism of nano-SiO2 / PES fibers, a synergistic improvement in broadband sound insulation and mechanical strength is achieved. Through the synergistic effect of Y-type co-extrusion die head and dynamic rectification group, physical isolation and diversion of molten material and in-situ microstructure forming are achieved, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, on the one hand, the present invention provides a high-strength engineering plastic synthesis device for energy-saving building sound insulation materials, including a plastic extruder, a pelletizing cylinder sleeved on its rear end, and a main motor. A material extruder is arranged below the plastic extruder, and the main motor is used to drive the spiral pusher inside the material extruder to extrude the material. A co-extrusion die is connected between the front ends of the plastic extruder and the material extruder for guiding the plastic and material to converge and form. The co-extrusion die is a Y-shaped flat tube, and a rectifier group is arranged inside its rear end intersection for rectifying the material into a grid structure.

[0007] The rectifier assembly includes a rectifier plate inserted into the side wall at the intersection with the rear end of the co-extrusion die, a rectifier roller rotatably connected below the rectifier plate, and a servo motor coaxially connected to the rectifier roller. The rectifier plate divides the interior of the co-extrusion die into upper and lower layers. The rectifier plate is L-shaped, and several extrusion tubes are inserted through it at equal intervals along its vertical side wall to guide the material to be extruded into strips. Several rectifier grids are embedded at equal intervals along the axial direction on the outer side wall of the rectifier roller. The rectifier grids are diamond-shaped, and several adjacent rows of rectifier grids are staggered to form a grid channel. The extrusion tubes point to the non-intersection point of the grid channel.

[0008] As a further improvement to this technical solution, the front ports of the plastic extruder and the material extruder are both fixedly connected to a material collection pipe, the branch pipe of the co-extrusion die is a material guide pipe and is fixedly connected to the material collection pipe, and the vertical section of the rectifier plate is blocked at the front port of the material guide pipe located below.

[0009] As a further improvement to this technical solution, the vertical section of the rectifier plate has several tapered holes at equal intervals on its sidewall. The large-diameter port of the tapered hole faces the feed guide tube, and the extrusion tube is inserted and fixed to the small-diameter port of the tapered hole. The front end of the extrusion tube extends beyond the rotation range of the rectifier grid and is located slightly above the middle of the rectifier roller.

[0010] As a further improvement to this technical solution, a slot is provided on the side wall at the intersection of the co-extrusion die head, the rectifier plate is adapted to be inserted into the slot, and a rectifier port is provided on the bottom surface of the co-extrusion die head and located below the middle of the slot, and several rectifier grids are rotatably engaged with the rectifier port.

[0011] As a further improvement to this technical solution, a cooling group is provided at the front end of the co-extrusion die head. The cooling group includes several pairs of rollers arranged at intervals, a water tank, and several water pumps. Each pair of rollers is embedded in the upper and lower parts of the co-extrusion die head. The water inlet of the water pump is connected to the water tank, and its outlet is fitted with a liquid delivery pipe. The liquid delivery pipe is connected to one end of the roller, and a return pipe is connected between the other end of the roller and the water tank.

[0012] As a further improvement to this technical solution, the two ends of the roller are fitted with connecting sleeves through bearings, and the infusion pipe and return pipe are connected to the connecting sleeves through a bend fitting.

[0013] As a further improvement to this technical solution, inserts are fixedly provided on both sides of the co-extrusion die head, and slots are provided on the inner side wall of the roller support frame. The inserts are slidably inserted into several slots on the same side.

[0014] As a further improvement to this technical solution, the front section of the co-extrusion die head is symmetrically provided with several rolling holes on the upper and lower surfaces, and a part of the roller is rotatably engaged in the rolling holes.

[0015] As a further improvement to this technical solution, the rear end side wall of the material extruder is connected to a feeding nozzle, and a PP-based composite material containing 15-20wt% nano-SiO2 is placed in the feeding cylinder, and short-cut fibers containing 20-30wt% PES are placed in the feeding nozzle.

[0016] On the other hand, a method for synthesizing high-strength engineering plastics for energy-saving building sound insulation materials, based on the aforementioned apparatus for synthesizing high-strength engineering plastics for energy-saving building sound insulation materials, includes the following steps:

[0017] S1. First, preheat the extrusion channels of the plastic extruder and the material extruder to 190-200℃;

[0018] S2. Add PP-based composite material containing 15-20wt% nano-SiO2 into the pelletizing cylinder, add short-cut PES fibers containing 20-30wt% into the feeding nozzle, and start the main motor to drive the two spiral push rods to push the materials, which are then heated and melted.

[0019] S3. The two materials, which are in a molten state, enter the co-extrusion die head and are separated into upper and lower layers by the rectifier plate. The lower layer of fiber material is extruded into strips through several extrusion tubes and the flow direction is integrated by the rotating rectifier roller, thereby forming a grid and the upper layer of sheet plastic composite.

[0020] S4. Continue traction using a traction machine until the above-mentioned compound is extruded through the co-extrusion die.

[0021] S5. Start the water pump to pump cold liquid into the drum for circulation, and the upper and lower drums roll the above-mentioned compound to press, cool and shape it.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. The high-strength engineering plastic synthesis device and method for energy-saving building sound insulation materials uses a set rectifier plate to divert the material to an independent flow channel. The rotating rectifier grid guides the strip fibers output from the extrusion tube to merge during movement, forming a grid sound-absorbing layer and improving the sound insulation effect. Under the drive of the servo motor, the fiber strips merge into a continuous grid structure on the roller surface, solving the problem of fiber breakage rate in traditional processes and achieving fiber integrity preservation.

[0024] 2. The high-strength engineering plastic synthesis device and method for energy-saving building sound insulation materials uses nano-SiO2 to scatter low-frequency sound waves and gridded PES fibers to dissipate high-frequency sound energy, forming an acoustic synergy mechanism to achieve a synergistic improvement in broadband sound insulation and mechanical strength.

[0025] 3. The high-strength engineering plastic synthesis device and method for energy-saving building sound insulation materials completes the lamination and shaping through the integrated design of the gradient cooling group; the roller is controlled by a multi-temperature zone water tank to cool the roller at a gradient of 80℃→40℃, and then the upper and lower rollers synchronously roll the composite layer to eliminate warping caused by the difference in shrinkage rate between PP and PES and improve flatness. Attached Figure Description

[0026] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, will select various possible shapes and proportions to implement the invention according to specific circumstances.

[0027] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 The main view;

[0029] Figure 3 This is a schematic diagram of the assembly structure of the co-extrusion die, rectifier assembly, and cooling assembly of the present invention;

[0030] Figure 4 This is one of the schematic diagrams of the co-extrusion die head structure of the present invention;

[0031] Figure 5 This is a second schematic diagram of the co-extrusion die head structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the internal assembly structure of the rectifier assembly of the present invention;

[0033] Figure 7 For the present invention Figure 6 Top view;

[0034] Figure 8 This is a cross-sectional view of the rectifier plate of the present invention;

[0035] Figure 9 This is a schematic diagram of the water tank assembly structure of the present invention;

[0036] Figure 10 This is a schematic diagram of the roller assembly structure of the present invention;

[0037] The meanings of the labels in the diagram are as follows:

[0038] 100. Plastic extruder; 101. Pellet feeder; 110. Material extruder; 111. Feed nozzle; 120. Main motor;

[0039] 200. Co-extrusion die head; 201. Slot; 202. Insert; 203. Rectifier port; 204. Roller burnishing port; 210. Feed guide tube; 220. Aggregator tube;

[0040] 300, Rectifier assembly; 310, Rectifier plate; 311, Extrusion tube; 312, Tapered orifice; 320, Rectifier roller; 321, Rectifier grid; 330, Servo motor;

[0041] 400 Cooling unit; 410 Roller; 411 Connecting sleeve; 412 Slot; 420 Water tank; 421 Return pipe; 430 Water pump; 431 Infusion pipe. Detailed Implementation

[0042] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art will conceive of any possible variations of the invention, all of which should be considered within the scope of the invention. The terms "installation" and "connection" should be interpreted broadly, referring to direct connection as well as indirect connection through an intermediate medium.

[0043] The terms "central axis," "vertical," "horizontal," "front," "rear," "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer" used herein to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of the invention, "a number" means two or more, unless otherwise explicitly specified.

[0044] Please see Figures 1-8As shown, this invention provides a high-strength engineering plastic synthesis device for energy-saving building sound insulation materials, including a plastic extruder 100, a pelletizing cylinder 101 sleeved on its rear end, and a main motor 120. A material extruder 110 is arranged below the plastic extruder 100. The main motor 120 is used to drive the spiral pusher rod inside the material extruder 110 to extrude the material. A support plate is fixedly connected to the lower part of the plastic extruder 100 and the material extruder 110. A spiral pusher rod is sleeved inside both the plastic extruder 100 and the material extruder 110. The outer end of the spiral pusher rod is connected to the main motor 120 through worm gear meshing. The above is the prior art and will not be described in detail here.

[0045] The rear end side wall of the material extruder 110 is connected to a feeding nozzle 111. The pellet cylinder 101 contains PP-based composite material containing 15-20wt% nano-SiO2. Polypropylene (PP) is the main base material, supplemented with 10% thermoplastic polyurethane (TPU) to improve toughness. PP has low cost and good weather resistance. TPU enhances damping and improves mid-to-low frequency sound insulation. Nano-silica is used as particulate filler to enhance the main sound insulation layer. Short fibers containing 20-30wt% PES are placed in the feeding nozzle 111. The fibers form a three-dimensional network structure, which absorbs mid-to-high frequency sound waves through friction damping.

[0046] Specifically, a co-extrusion die 200 is connected between the front ends of the plastic extruder 100 and the material extruder 110 for guiding the plastic and material to converge and form. A support plate is fixedly connected below the co-extrusion die 200. The co-extrusion die 200 is a Y-shaped flat tube, and a rectifier group 300 is set inside the intersection of its rear end for rectifying the material into a grid structure. The front end of the co-extrusion die 200 is a flat slit with a width-to-height ratio of ≥10:1 and a gap height of 5-10mm.

[0047] The rectifier assembly 300 includes a rectifier plate 310 inserted into the side wall at the intersection with the rear end of the co-extrusion die 200, a rectifier roller 320 rotatably connected below the rectifier plate 310, and a servo motor 330 coaxially connected to the rectifier roller 320. The rectifier plate 310 divides the interior of the co-extrusion die 200 into upper and lower layers. The rectifier plate 310 is L-shaped and has several extrusion tubes 311 inserted through it at equal intervals on its vertical side wall for guiding the material to be extruded into strips.

[0048] The outer wall of the rectifier roller 320 is embedded with several rectifier grids 321 at equal intervals along the axial direction. The rectifier grids 321 have a diamond structure. Several rectifier grids 321 in two adjacent rows are staggered to form a grid channel. The rectifier roller 320 and the rectifier grids 321 are both made of P20 mold steel to avoid sticking to the molten material. The extrusion tube 311 points to the non-intersection point of the grid channel, so that the strip that is just extruded from the extrusion tube 311 is guided and bonded together by two adjacent rectifier grids 321 to form a grid.

[0049] Furthermore, the front ports of the plastic extruder 100 and the material extruder 110 are both fixedly connected to the material collection tube 220. The branch tube of the co-extrusion die 200 is a guide tube 210 and is fixedly connected to the material collection tube 220. The vertical section of the rectifier plate 310 is blocked at the front port of the guide tube 210 located below, so that the molten material is extruded from the extrusion tube 311.

[0050] The vertical section of the rectifier plate 310 has several tapered holes 312 at equal intervals on its sidewall. The large-diameter port of the tapered hole 312 faces the feed guide tube 210. The extrusion tube 311 is inserted and fixed to the small-diameter port of the tapered hole 312. The front end of the extrusion tube 311 extends beyond the rotation range of the rectifier grid 321 and is located slightly above the middle of the rectifier roller 320. This prevents the extrusion tube 311 from contacting the rectifier grid 321 and allows the strip extruded by the extrusion tube 311 to fall onto the rectifier roller 320 and be guided and merged by the rectifier grid 321.

[0051] Furthermore, a slot 201 is provided on the side wall of the intersection of the co-extrusion die 200, and the rectifier plate 310 is adapted to be inserted into the slot 201. A rectifier port 203 is provided on the bottom surface of the co-extrusion die 200 and located below the middle of the slot 201. Several rectifier grids 321 are rotatably engaged with the rectifier port 203. The rectifier roller 320 is supported by brackets at both ends, and a servo motor 330 is installed on the side wall of the bracket to drive the rectifier roller 320 to rotate.

[0052] like Figures 9-10 As shown, in order to compact and solidify the upper and lower layers of molten material, a cooling group 400 is provided at the front end of the co-extrusion die 200. The cooling group 400 includes several pairs of rollers 410 spaced apart vertically, a water tank 420, and several water pumps 430. Each pair of rollers 410 is embedded in the upper and lower surfaces of the co-extrusion die 200. The water inlet of the water pump 430 is connected to the water tank 420, and its outlet is fitted with a liquid delivery pipe 431. The liquid delivery pipe 431 is connected to one end of the roller 410, and the other end of the roller 410 is connected to the water tank 420 by a return pipe 421. The interior of the water tank 420 is divided into several cavities by a partition, corresponding to several water pumps 430. Water at different temperatures (between 80-40℃) is injected into the cavities and gradually cooled towards the front end of the co-extrusion die 200 to form a gradient cooling, thereby preventing warping of the sheet-like composite material during the solidification process.

[0053] Furthermore, the co-extrusion die 200 has several rolling holes 204 symmetrically opened on the upper and lower surfaces of the front section. A part of the roller 410 is rotated and engaged in the rolling hole 204. The two ends of the roller 410 are fitted with connecting sleeves 411 through bearings. The infusion pipe 431 and the return pipe 421 are connected to the connecting sleeves 411 through a bend head, so that when the roller 410 rolls the compound, it does not drive the infusion pipe 431 and the return pipe 421 to rotate, thus ensuring smooth delivery of cold liquid.

[0054] Furthermore, insert strips 202 are fixedly provided on both sides of the co-extrusion die head 200, and slots 412 are provided on the inner side wall of the support frame of the roller 410. The insert strips 202 are slidably inserted into several slots 412 on the same side, so that the co-extrusion die head 200 is installed stably.

[0055] This invention also provides a method for synthesizing high-strength engineering plastics for energy-saving building sound insulation materials. Based on the above-mentioned apparatus for synthesizing high-strength engineering plastics for energy-saving building sound insulation materials, the method includes the following steps:

[0056] S1. First, preheat the extrusion channels of the plastic extruder 100 and the material extruder 110 to 190-200℃;

[0057] S2. Add PP-based composite material containing 15-20wt% nano-SiO2 into the pelletizing cylinder 101, add short-cut PES fibers containing 20-30wt% into the feeding nozzle 111, and start the main motor 120 to drive the two spiral push rods to push the materials, which are then heated and melted.

[0058] S3. The two materials, which are in a molten state, enter the co-extrusion die 200 and are separated into upper and lower layers by the rectifier plate 310. The lower layer of fiber material is extruded into strips through several extrusion tubes 311 and the flow direction is integrated by the rotating rectifier roller 320, thereby forming a grid and the upper layer of sheet plastic composite.

[0059] S4. Until the above compound is extruded through the co-extrusion die 200, a traction machine is used for traction.

[0060] S5. Start the water pump 430 to pump cold liquid into the roller 410 for circulation. The upper and lower rollers 410 roll the above-mentioned compound to press, cool and shape it.

[0061] It should be noted that the fixed connections and fixing methods of the present invention are achieved using conventional fixing means such as bolt connections or welding. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A high-strength engineering plastic synthetic device for energy-saving building sound insulation materials, comprising a plastic extruder (100), a pelletizing cylinder (101) sleeved on the rear end thereof, and a main motor (120), characterized in that: The lower part of the plastic extruder (100) is provided with a material extruder (110), and the main motor (120) is used for driving the spiral pushing rod in the material extruder (110) to extrude materials; the front ends of the plastic extruder (100) and the material extruder (110) are connected with a co-extrusion die head (200) for guiding the plastic and the material to converge and form, the co-extrusion die head (200) is a Y-shaped flat tube, and a rectifier group (300) is arranged in the rear end intersection of the co-extrusion die head (200) for rectifying the material into a grid structure; The rectifier group (300) comprises a rectifier plate (310) inserted into the side wall of the rear end intersection of the co-extrusion die head (200), a rectifier roller (320) rotatably connected to the lower part of the rectifier plate (310), and a servo motor (330) coaxially connected with the rectifier roller (320); the rectifier plate (310) divides the inside of the co-extrusion die head (200) into two layers, the rectifier plate (310) is L-shaped, and a plurality of extrusion pipes (311) are inserted into the vertical section side wall of the rectifier plate (310) at equal intervals for guiding the material to be extruded into a strip shape, a plurality of rectifier grids (321) are embedded in the outer side wall of the rectifier roller (320) at equal intervals along the axial direction, the rectifier grids (321) are in a diamond structure, and the adjacent two rows of rectifier grids (321) are distributed in a staggered manner to form a grid channel, and the extrusion pipe (311) is directed to a non-converging point of the grid channel.

2. The high strength engineering plastic synthetic unit for energy saving building soundproofing material as claimed in claim 1, wherein: The front ends of the plastic extruder (100) and the material extruder (110) are fixedly and communicatively connected with a material gathering pipe (220), the bifurcated pipe of the co-extrusion die head (200) is a guide pipe (210) and is fixedly and communicatively connected with the material gathering pipe (220), and the vertical section of the rectifier plate (310) is blocked at the front end of the guide pipe (210) located below.

3. The high strength engineering plastic synthetic unit for energy saving building soundproofing material as claimed in claim 2, wherein: A plurality of tapered holes (312) are arranged at equal intervals in the vertical section side wall of the rectifier plate (310), the large-diameter end of the tapered hole (312) is directed to the guide pipe (210), the extrusion pipe (311) is inserted and fixed with the small-diameter end of the tapered hole (312), and the front end of the extrusion pipe (311) extends beyond the rotation range of the rectifier grid (321) and is located above the middle part of the rectifier roller (320).

4. The high strength engineering plastic synthetic unit for energy saving building soundproofing material as claimed in claim 3 wherein: The side wall of the intersection of the co-extrusion die head (200) is provided with a slot (201), the rectifier plate (310) is adaptively inserted into the slot (201), the bottom surface of the co-extrusion die head (200) and below the middle part of the slot (201) is provided with a rectifier port (203), and a plurality of rectifier grids (321) are rotatably connected with the rectifier port (203).

5. The high strength engineering plastic synthetic unit for energy efficient building insulation material as claimed in claim 4 wherein: The front end of the co-extrusion die (200) is provided with a cooling group (400), the cooling group (400) comprises several pairs of upper and lower spaced rollers (410), a water tank (420) and several water pumps (430), each pair of rollers (410) is embedded in the upper and lower surfaces of the co-extrusion die (200), the water inlet end of the water pump (430) is connected with the water tank (420), the water outlet end of the water pump (430) is sleeved with a liquid delivery pipe (431), the liquid delivery pipe (431) is connected with one end of the roller (410), and the other end of the roller (410) is connected with the water tank (420).

6. The high strength engineering plastic synthetic device for energy saving building soundproofing material according to claim 5, characterized in that: The two ends of the roller (410) are sleeved with a connecting sleeve (411) through a bearing, and the liquid delivery pipe (431) and the return pipe (421) are adaptively connected with the connecting sleeve (411) through an elbow head.

7. The high strength engineering plastic synthetic unit for energy efficient building insulation material as claimed in claim 6 wherein: The co-extrusion die (200) is fixedly provided with an insert strip (202) on the two side walls, the inner side wall of the support frame of the roller (410) is provided with a clamping groove (412), and the insert strip (202) is slidably inserted into the clamping groove (412) on the same side.

8. The high strength engineering plastic synthetic device for energy saving building soundproofing material according to claim 7, characterized in that: The co-extrusion die (200) is symmetrically provided with a plurality of rolling openings (204) on the upper and lower surfaces of the front section.

9. The high strength engineering plastic synthetic device for energy saving building soundproofing material according to claim 8, characterized in that: The rear end side wall of the material extruder (110) is communicated with a material nozzle (111), the PP-based composite material containing 15-20wt% nano-SiO2 is placed in the pelletizing cylinder (101), and the PES short fiber containing 20-30wt% is placed in the material nozzle (111).

10. The method of synthesizing high-strength engineering plastic for energy-saving building soundproofing material based on the device for synthesizing high-strength engineering plastic for energy-saving building soundproofing material according to claim 9, characterized in that, The method comprises the following steps: S1, first, the plastic extruder (100) and the material extruder (110) are preheated in the extrusion channel to reach 190-200℃; S2, the PP-based composite material containing 15-20wt% nano-SiO2 is added into the pelletizing cylinder (101), the PES short fiber containing 20-30wt% is added into the material nozzle (111), and the main motor (120) is started to drive the two screw push rods to push the materials after heating and melting; S3, until the two materials in the molten state enter the co-extrusion die (200), are divided into upper and lower layers by the rectifier plate (310), the fiber material in the lower layer is extruded into a strip shape by the plurality of extrusion pipes (311), and the flow direction is integrated by the rotating rectifier roller (320), and then a grid is formed with the sheet-shaped plastic in the upper layer; S4, until the above-mentioned composite material is extruded from the co-extrusion die (200), then a traction machine is used for traction; S5, the water pump (430) is started to pump cold liquid into the roller (410) for circulating flow, and the upper and lower rollers (410) roll and press the above-mentioned composite material for compression, cooling and shaping.

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