Macromolecule wood-plastic composite material production forming equipment and technology

Abstract

The invention relates to the technical field of wood-plastic composite material production, in particular to a macromolecule wood-plastic composite material production forming device and process, and the device comprises a drying and screening mechanism, a material mixing mechanism, an extrusion mechanism and a cooling mechanism which are arranged on a rack; the drying and screening mechanism comprises a drying assembly arranged on the rack, a screening assembly arranged on the drying assembly, a flattening assembly arranged on the drying assembly and a power assembly arranged on the drying assembly and used for driving the screening assembly to grind materials. The impurity discharging assembly is arranged on the drying assembly; the discharging assembly is arranged on the drying assembly; the wood powder screening device can dry and screen out wood powder with qualified particle size, grind and disperse agglomerated wood powder, improve the screening effect of the wood powder, and solve the technical problems that the dispersity of the wood powder in a polymer is influenced by agglomeration of the wood powder, and further the overall performance of a composite material is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of wood-plastic composite production, and particularly relates to a production and molding device and process for high-molecular wood-plastic composites. Background Art

[0002] Wood-plastic composites have been widely used in recent years due to their excellent performance and energy-saving and environmental protection characteristics. However, the poor creep resistance and low comprehensive mechanical properties of this material limit its application in high-value-added fields. Wood-plastic co-extrusion technology is a layered extrusion technology that has emerged in recent years and can specifically optimize the extrusion of the surface and core layers of composites. Currently, for wood-plastic / wood-plastic and wood-plastic / plastic co-extruded composites internationally, the improvement of mechanical strength is not significant. Wood-plastic / metal co-extruded materials have high mechanical strength, but have disadvantages such as large material density and easy rusting of the metal inner lining.

[0003] The patent document with the patent number CN2024107214221 discloses a molding device for wood-plastic composites that facilitates material feeding, including a support frame and a molding die. An elevating assembly is installed inside the support frame, and a flipping assembly is installed inside the elevating assembly. The elevating assembly includes top plates fixedly connected to the front and back tops of the inner wall of the support frame and a bottom plate fixedly connected to the middle inside the support frame. The inside of the bottom plate and the two top plates are all movably sleeved with lead screws, and lifting plates are threadedly sleeved on the outside of the lead screws. By providing a flipping assembly, an elevating assembly, a material-feeding cylinder, and a push plate, the flipping assembly can drive the molding die to rotate 180°, making the opening of the molding die face downward. The elevating assembly makes the opening of the molding die close to the surface of the top of the bottom plate. Start the material-feeding cylinder, so that the formed material falls on the surface of the bottom plate under the action of gravity and the thrust of the push plate, completing the automatic material feeding.

[0004] However, during actual use, the inventor found that when wood powder is exposed to air for a long time, it will absorb water vapor in the environment, resulting in agglomeration of the wood powder, affecting its dispersibility in the polymer, and further affecting the overall performance of the composite material. Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and provide a production and molding device for high-molecular wood-plastic composites. By the cooperation of the provided screening assembly and power assembly, it can dry and screen out wood powder with qualified particle size, disperse the agglomerated wood powder, and improve the screening effect of the wood powder, thereby solving the technical problem that the agglomeration of wood powder affects its dispersibility in the polymer and further affects the overall performance of the composite material.

[0006] For the above technical problems, the following technical solutions are adopted: A production and molding device for high-molecular wood-plastic composites includes a drying and screening mechanism, a mixing mechanism, an extrusion mechanism, and a cooling mechanism arranged on a frame; The drying and screening mechanism includes a drying component arranged on the frame, a screening component arranged on the drying component, a flattening component arranged on the drying component, a power component arranged on the drying component and used to drive the screening component to disperse materials, a waste discharging component arranged on the drying component, and a discharging component arranged on the drying component; The drying component dries the materials. The power component drives the screening component to filter and intercept materials with larger particle sizes. The power component drives the screening component again to disperse the agglomerated materials. The power component drives the flattening component to spread the dispersed materials on the screening component. The discharging component distributes the dried and screened materials in a layered and spaced manner in the vertical direction in the mixing mechanism. The mixing mechanism adds raw and auxiliary materials in the intervals between the layered material layers. The mixing mechanism then mixes the materials and the raw and auxiliary materials evenly and transfers the mixture to the extrusion mechanism. The extrusion mechanism first conducts microcellular foaming injection molding on the mixture, and then injects and wraps another added composite material on the outer wall of the extruded strip of the mixture to form a sandwich-shaped wood-plastic strip. The cooling mechanism cools and shapes the wood-plastic strip.

[0007] Preferably, the drying component includes a drying box arranged on the frame, a hot air blower arranged on the side wall of the drying box, and a feeding port arranged on the drying box; The screening component includes: Long strip-shaped sieve plates. A plurality of groups of the long strip-shaped sieve plates are arranged side by side between the inner walls of the drying box, and adjacent two long strip-shaped sieve plates are hinged by long rods; L-shaped hanging ears. A plurality of groups of the L-shaped hanging ears are respectively arranged at the two end parts of the two long rods at intervals. Horizontal sliding grooves are respectively opened on the opposite two inner side walls of the drying box, and one end part of the L-shaped hanging ear is slidably matched with the inside of the sliding groove; Counterweight blocks. A plurality of groups of the counterweight blocks are respectively arranged at the bottoms of the two long rods at intervals. The long rods with counterweight blocks and the long rods with L-shaped hanging ears are arranged in a staggered and alternating manner; Expansion plates. The two expansion plates are respectively symmetrically penetrated and slidably arranged on the opposite two inner side walls of the drying box, and the two expansion plates are respectively hinged to one long rod.

[0008] Preferably, the flattening component includes: A threaded rod, which is rotatably arranged inside the drying box, and a threaded block is arranged on the threaded rod in a threaded manner; A strip-shaped rod, which is arranged below the threaded block through a suspension rod, and a plurality of groups of rake teeth are arranged at the bottom of the strip-shaped rod; An extension shaft, one end of the extension shaft is fixedly connected to one end of the threaded rod, and the other end of the extension shaft penetrates to the outside of the drying box. A first bevel gear is slidably sleeved on the extension shaft.

[0009] Preferably, the power assembly includes a first power unit and a second power unit. The first power unit is used to drive the screening assembly to work, and the second power unit is used to drive the leveling assembly to work; The first power unit includes: Power boxes, the two power boxes are respectively arranged on the opposite outer side walls of the drying box. A vertical shaft is rotatably arranged inside the power box, and a mounting block is fixedly arranged on the vertical shaft; A power disk, a strip-shaped hole is opened on the power disk, the power disk is slidably arranged on the mounting block through the strip-shaped hole, and a first hydraulic component is arranged on the mounting block. The output end of the first hydraulic component is fixedly connected to one end of the strip-shaped hole; A first annular limiting groove is opened on the circumferential side surface of the power disk. One side of the outer expansion plate located inside the power box is provided with a first limiting block, and the first limiting block is slidably fitted inside the first annular limiting groove; The second power unit includes: A second bevel gear, the second bevel gear is rotatably arranged on the top of the power box, and the second bevel gear works synchronously with the vertical shaft through the transmission mode of a belt and a belt pulley. The second bevel gear is used to drive the first bevel gear; A second limiting block, the second limiting block is horizontally slidably arranged on the inner side wall of the power box through a strip-shaped limiting groove, and the second limiting block drives the first bevel gear to horizontally move on the extension shaft through a connecting rod; Positioning blocks, several groups of positioning blocks are respectively arranged in the inner top of the strip-shaped limiting groove through vertical grooves. A positioning groove matched with the positioning blocks is opened on the second limiting block, and the positioning blocks are arranged in the vertical grooves through elastic components; A third limiting block, the third limiting block is slidably arranged inside the first annular limiting groove of one of the power disks, and an elastic telescopic component is arranged between the third limiting block and the second limiting block.

[0010] Preferably, the impurity removal assembly includes: Gate plates, the two gate plates are respectively arranged in the inner parts of the opposite inner side walls of the drying box through inner cavities. The bottom of the gate plate is in contact with the upper surface of the outer expansion plate, and a second hydraulic component for driving the gate plate to lift is arranged inside the inner cavity; A push plate, a third hydraulic component for driving the push plate to lift is arranged on the strip-shaped rod; Impurity removal doors, the two impurity removal doors are respectively opened on the side walls of the two power boxes; The discharge assembly includes: A turntable, which is rotatably arranged at the middle position of the bottom of the drying box. A strip-shaped discharge port is formed on the turntable, and a ramp for guiding materials onto the turntable is arranged at the bottom of the drying box. A retaining bar, which is arranged on the outer bottom of the drying box and is used to block the strip-shaped discharge port. Discharge rollers, two of which are symmetrically and rotatably arranged inside the strip-shaped discharge port. A first gear is embedded and rotatably arranged at the bottom of the turntable, and the first gear drives the two discharge rollers to rotate synchronously and in opposite directions through the transmission of a belt and belt pulleys. An avoidance channel for avoiding the first gear is formed on the retaining bar. Preferably, the mixing mechanism includes: A mixing cylinder, which is arranged at the bottom of the drying box and is coaxially arranged with the turntable. A stirring member is arranged inside the mixing cylinder. An annular feeding box, which is arranged on the inner wall of the mixing cylinder. An annular rack for driving the first gear is arranged on the annular feeding box. A plurality of groups of automatic blanking pipes are arranged along the circumferential direction at the bottom of the annular feeding box. A plurality of groups of storage bins are arranged on the drying box, and the storage bins supply materials to the inside of the annular feeding box through feeding pipes. A transfer port, which is arranged on the mixing cylinder, and a valve is arranged on the transfer port.

[0011] Preferably, the extrusion mechanism includes: A first barrel, which is arranged on the frame. A first hopper is arranged on the first barrel, and a screw is arranged inside the first barrel. The screw is driven by a transmission system arranged on the frame. A second barrel, which is coaxially arranged with the first barrel. A second hopper is arranged on the second barrel, and a spiral blade is arranged on the inner wall of the second barrel. The spiral blade fits against the outer wall of the first barrel. An extrusion die head, which is arranged at the output end of the second barrel.

[0012] Preferably, the cooling mechanism includes: A cooling channel, which is arranged on the frame and is filled with coolant inside. Concentric rings, two of which are arranged inside the cooling channel through reinforcing ribs. A converging cylinder, which is movably arranged inside the two concentric rings. A plurality of groups of fins are arranged on the inner wall of the converging cylinder, and a plurality of groups of strip-shaped teeth are arranged on the outer wall of the converging cylinder. A second gear, which is rotatably arranged between two reinforcing ribs on the same side through a shaft rod and is used to drive the strip-shaped teeth to rotate the converging cylinder.

[0013] Preferably, the cooling mechanism further includes a heat convection component, which includes: A third bevel gear rotatably arranged at the bottom of the cooling channel; A fourth bevel gear arranged at the end of the shaft rod and used to drive the third bevel gear; An eccentric wheel rotatably arranged at the bottom of the cooling channel and linked with the third bevel gear through the transmission of a belt and a pulley; A second annular limiting groove opened on the upper surface of the eccentric wheel, and a fourth limiting block is slidably fitted inside the second annular limiting groove; A third annular limiting groove opened at one port of the converging cylinder, and a fifth limiting block is slidably fitted inside the third annular limiting groove. A transmission rod is arranged between the fifth limiting block and the fourth limiting block.

[0014] Another object of the present invention is to provide a production and molding process for a polymer wood-plastic composite material in view of the deficiencies of the prior art. Through the cooperation of a drying and screening process, a mixing process, an extrusion process, and a cooling and molding process, the effect of automatically drying and screening wood powder is achieved.

[0015] For the above technical problems, the following technical solutions are adopted: A production and molding process for a polymer wood-plastic composite material includes the following steps: Step 1, the drying and screening process. The drying component dries the material, the screening component filters and intercepts materials with larger particle sizes, the power component drives the screening component again to disperse the agglomerated materials, the power component then drives the flattening component to spread the dispersed materials on the screening component, and the discharging component distributes the dried and screened materials in a vertically layered and spaced manner inside the mixing mechanism; Step 2, the mixing process. The mixing mechanism adds raw and auxiliary materials in the intervals between the layered materials, then mixes the materials and the raw and auxiliary materials evenly, and transfers the mixture to the extrusion mechanism; Step 3, the extrusion process. The extrusion mechanism first performs microcellular foaming injection molding on the mixture in the first barrel, then adds a composite material in the second barrel, and injects and wraps the composite material on the outer wall of the extrusion strip of the mixture to form a sandwich-layered wood-plastic strip; Step 4, the cooling and molding process. The extruded wood-plastic strip enters the cooling channel and passes through the inside of the converging cylinder. The self-rotation of the converging cylinder drives the flow of the coolant inside it. The flow of the coolant generated by the centripetal force shapes the wood-plastic strip into a spiral shape. The converging cylinder moves horizontally repeatedly to exchange heat between the coolant inside the converging cylinder and the coolant in the cooling channel to cool and mold the wood-plastic strip.

[0016] Advantages of the present invention: (1) In the present invention, through the cooperation of the screening assembly and the power assembly, on the one hand, it can dry and screen the wood powder, reduce the moisture content of the wood powder, screen out the wood powder with qualified particle size, and eliminate the wood powder with larger particle size, preventing the gas from escaping along the wood fiber direction during the foaming process when the wood powder with larger particle size is used as a filler, resulting in a decrease in the gas content in the molten system and a lower cell density; on the other hand, it can repeatedly disperse the agglomerated wood powder, which is beneficial to the drying work of the wood powder, improve the screening effect of the wood powder, avoid the aggregation of the wood powder and affect its dispersion in the polymer, and improve the overall performance of the composite material; (2) In the present invention, through the cooperation of the leveling assembly and the power assembly, on the one hand, it can evenly level the dispersed wood powder on several groups of horizontal long strip sieve plates, which is convenient for the dried and screened wood powder to be dried and screened again, and during the process of raking and leveling the wood powder by the rake teeth, it can further disperse the agglomerated wood powder and improve the dispersion effect of the wood powder; on the other hand, it can automatically discharge the wood powder with larger particle size intercepted in the drying box for unified collection, empty the drying box, and facilitate the drying and screening work of the next batch of wood powder; (3) In the present invention, through the cooling mechanism provided, on the one hand, it can utilize the fluidity of the liquid to shape the outer layer of the wood-plastic strip into a spiral shape, improve the physical structure strength of the wood-plastic strip, increase the torsional resistance of the wood-plastic strip, and simulate the appearance of rattan, increasing the aesthetics of the wood-plastic strip; on the other hand, the converging cylinder reciprocates horizontally, enabling the coolant in the converging cylinder to exchange with the coolant in the cooling channel, preventing the coolant in the converging cylinder from overheating and improving the cooling and forming effect of the wood-plastic strip. Description of the drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a production and forming device for a polymer wood-plastic composite material.

[0019] Figure 2 It is a schematic structural diagram of a drying and screening mechanism and a mixing mechanism.

[0020] Figure 3 It is a schematic structural diagram of a drying and screening mechanism.

[0021] Figure 4 For Figure 3 A schematic structural diagram from another perspective.

[0022] Figure 5 It is a schematic structural diagram of the screening component.

[0023] Figure 6 It is Figure 5 a schematic structural diagram from another perspective.

[0024] Figure 7 It is a schematic structural diagram of the flattening component.

[0025] Figure 8 It is Figure 7 a schematic structural diagram from another perspective.

[0026] Figure 9 It is a schematic structural diagram of the power component.

[0027] Figure 10 It is a schematic structural diagram of the first power unit.

[0028] Figure 11 It is a schematic structural diagram of the second power unit.

[0029] Figure 12 It is a schematic structural diagram of the positioning block.

[0030] Figure 13 It is a schematic structural diagram of the discharging component.

[0031] Figure 14 It is Figure 13 a schematic structural diagram from the upward perspective.

[0032] Figure 15 It is a schematic structural diagram of the mixing mechanism.

[0033] Figure 16 It is a schematic structural diagram of the interior of the mixing mechanism.

[0034] Figure 17 It is a schematic structural diagram of the extrusion mechanism.

[0035] Figure 18 It is a schematic structural diagram of the interior of the extrusion mechanism.

[0036] Figure 19 It is a schematic structural diagram of the cooling mechanism.

[0037] Figure 20 It is a schematic structural diagram of the interior of the cooling mechanism.

[0038] Figure 21 It is a schematic structural diagram of the converging cylinder.

[0039] Figure 22 It is a schematic process diagram of a production and molding process for a polymer wood-plastic composite material. Specific implementation manners

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0041] Embodiment 1 As Figures 1 - 14 shown, a production and molding device for polymer wood-plastic composite materials includes a drying and screening mechanism 2, a mixing mechanism 3, an extrusion mechanism 4, and a cooling mechanism 5 arranged on a frame 1; The drying and screening mechanism 2 includes a drying component 21 arranged on the frame 1, a screening component 22 arranged on the drying component 21, a flattening component 23 arranged on the drying component 21, a power component 24 arranged on the drying component 21 and used to drive the screening component 22 to disperse the materials, a waste discharging component 25 arranged on the drying component 21, and a discharging component 26 arranged on the drying component 21; The drying component 21 dries the materials, the power component 24 drives the screening component 22 to filter and intercept materials with larger particle sizes, the power component 24 drives the screening component 22 again to disperse the agglomerated materials, the power component 24 drives the flattening component 23 to spread the dispersed materials flat on the screening component 22, the discharging component 26 distributes the dried and screened materials in a layered and spaced manner in the vertical direction in the mixing mechanism 3, the mixing mechanism 3 adds raw and auxiliary materials in the intervals between the layered material layers, the mixing mechanism 3 then mixes the materials and the raw and auxiliary materials evenly, and transfers the mixture to the extrusion mechanism 4. The extrusion mechanism 4 first performs microcellular foaming injection on the mixture, and then injects and wraps another added composite material on the outer wall of the extruded strip of the mixture to form a sandwich-shaped wood-plastic strip. The cooling mechanism 5 cools and shapes the wood-plastic strip.

[0042] Further, as Figures 2 - 6 shown, the drying component 21 includes a drying box 211 arranged on the frame 1, a hot air blower 212 arranged on the side wall of the drying box 211, and a feeding port 213 arranged on the drying box 211; The screening component 22 includes: Long strip sieve plates 221, several groups of the long strip sieve plates 221 are arranged side by side between the inner walls of the drying box 211, and adjacent two long strip sieve plates 221 are hinged by a long rod 222; L-shaped hanging ears 223, several groups of the L-shaped hanging ears 223 are respectively arranged at the two end parts of the two long rods 222 at intervals. Horizontal sliding grooves 224 are respectively opened on the opposite two inner side walls of the drying box 211, and one end part of the L-shaped hanging ear 223 is slidably matched with the inside of the sliding groove 224; The counterweight blocks 225, several groups of the counterweight blocks 225 are respectively arranged at the bottoms of the two long rods 222 at intervals, and the long rods 222 with the counterweight blocks 225 and the long rods 222 with the L-shaped hanging ears 223 are arranged in a staggered and alternating manner; The outward expansion plates 226, the two outward expansion plates 226 are respectively symmetrically penetrated and slidably arranged on the opposite inner side walls of the drying box 211, and the two outward expansion plates 226 are respectively hinged to one long rod 222.

[0043] It should be noted that when the two outward expansion plates 226 move closer to each other, the long rod 222 with the L-shaped hanging ear 223 moves horizontally along the chute 224, and the long rod 222 with the counterweight block 225 descends synchronously, so that the adjacent two hinged long strip sieve plates 221 are folded with each other. During the folding process, the agglomerated wood powder is crushed. When the two outward expansion plates 226 move away from each other and reset, several groups of long strip sieve plates 221 are reset flush to perform the work of screening the wood powder.

[0044] It is worth mentioning that the qualified particle size wood powder falls after being filtered by the long strip sieve plate 221, and the large particle size wood powder and the agglomerated wood powder are intercepted on the long strip sieve plate 221. Several groups of long strip sieve plates 221 can be repeatedly folded to crush the agglomerated wood powder until all the qualified particle size wood powder is filtered and falls.

[0045] Furthermore, as Figures 3 - 4 and Figures 9 - 12 shown, the power assembly 24 includes a first power unit 241 and a second power unit 242. The first power unit 241 is used to drive the screening assembly 22 to work, and the second power unit 242 is used to drive the leveling assembly 23 to work; The first power unit 241 includes: The power boxes 2411, the two power boxes 2411 are respectively arranged on the opposite outer side walls of the drying box 211. A vertical shaft 2412 is rotatably arranged inside the power box 2411. An installation block 2413 is fixedly arranged on the vertical shaft 2412. A first driving member 2419 for driving the vertical shaft 2412 is arranged at the bottom of the power box 2411; The power disks 2414, the power disks 2414 are provided with strip-shaped holes 2415. The power disks 2414 are slidably arranged on the installation blocks 2413 through the strip-shaped holes 2415. A first hydraulic member 2416 is arranged on the installation blocks 2413. The output end of the first hydraulic member 2416 is fixedly connected to one end of the strip-shaped hole 2415; The first annular limiting groove 2417, the first annular limiting groove 2417 is opened on the circumferential side surface of the power disk 2414. A first limiting block 2418 is arranged on one side of the outward expansion plate 226 located inside the power box 2411. The first limiting block 2418 is slidably matched inside the first annular limiting groove 2417.

[0046] It should be noted that the first driving member 2419 uses an existing stepper motor.

[0047] It is worth mentioning that when it is necessary to oscillate and screen the wood powder, the first hydraulic member 2416 drives the two power disks 2414 to synchronously translate a specified distance to the right, so that the power disks 2414 are eccentric to the left relative to the vertical shaft 2412. During the synchronous rotation of the two power disks 2414, the first annular limiting groove 2417 drives the two outer expansion plates 226 to move synchronously in the same direction, so that the several groups of strip-shaped sieve plates 221 always remain in a horizontal state, and the two outer expansion plates 226 drive the several groups of strip-shaped sieve plates 221 to reciprocate horizontally to screen the wood powder.

[0048] It is also worth mentioning that when it is necessary to disperse the agglomerated wood powder, the first hydraulic member 2416 drives one of the power disks 2414 to translate a specified distance to the right, so that the power disk 2414 is eccentric to the left relative to the vertical shaft 2412, and the other power disk 2414 translates a specified distance to the left, so that the power disk 2414 is eccentric to the right relative to the vertical shaft 2412. During the synchronous rotation of the two power disks 2414, the first annular limiting groove 2417 drives the two outer expansion plates 226 to move synchronously in the opposite direction, and the two outer expansion plates 226 drive the several groups of strip-shaped sieve plates 221 to fold repeatedly to disperse the agglomerated wood powder.

[0049] In this embodiment, through the cooperation of the screening assembly 22 and the power assembly 24, on the one hand, it can dry and screen the wood powder, reduce the moisture content of the wood powder, screen out the wood powder with qualified particle size, and remove the wood powder with larger particle size, preventing the gas from escaping along the wood fiber direction during the foaming process when the wood powder with larger particle size is used as a filler, resulting in a decrease in the gas content in the molten system and a lower cell density; on the other hand, it can repeatedly disperse the agglomerated wood powder, which is beneficial to the drying work of the wood powder, improve the screening effect of the wood powder, avoid the aggregation of the wood powder and affect its dispersion in the polymer, and improve the overall performance of the composite material.

[0050] Specifically, wood powder is quantitatively added into the drying box 211 from the feeding port 213 as the material. The hot air blower 212 increases the temperature inside the drying box 211 to dry the wood powder. At the same time, the wood powder is first oscillated and screened. The first hydraulic component 2416 drives the two power disks 2414 to synchronously translate a specified distance to the right, making the power disks 2414 eccentric to the left relative to the vertical shaft 2412. The first driving component 2419 drives the two power disks 2414 to synchronously rotate through the vertical shaft 2412. During the synchronous rotation of the two power disks 2414, the two outer expansion plates 226 are driven to move in the same direction and synchronously through the first annular limiting groove 2417 and the first limiting block 2418. The two outer expansion plates 226 drive a plurality of groups of long strip sieve plates 221 to reciprocate horizontally to screen the wood powder. The wood powder with qualified particle size falls through the long strip sieve plates 221 after being filtered, and the wood powder with large particle size and agglomerated wood powder are intercepted on the long strip sieve plates 221. When it is necessary to disperse the agglomerated wood powder, the first hydraulic component 2416 drives one of the power disks 2414 to translate a specified distance to the right, making the power disk 2414 eccentric to the left relative to the vertical shaft 2412, and the other power disk 2414 translates a specified distance to the left, making the power disk 2414 eccentric to the right relative to the vertical shaft 2412. During the process that the first driving component 2419 drives the two power disks 2414 to synchronously rotate through the vertical shaft 2412, the power disks 2414 drive the two outer expansion plates 226 to move in the opposite direction and synchronously through the first annular limiting groove 2417 and the first limiting block 2418. When the two outer expansion plates 226 move closer to each other, the long rod 222 with the L-shaped hanging ear 223 moves horizontally along the sliding groove 224, and the long rod 222 with the counterweight block 225 descends synchronously, making the adjacent two hinged long strip sieve plates 221 fold with each other. During the folding process, the agglomerated wood powder is dispersed. When the two outer expansion plates 226 move away from each other and reset, a plurality of groups of long strip sieve plates 221 reset flush, so that the two outer expansion plates 226 drive a plurality of groups of long strip sieve plates 221 to fold repeatedly to disperse the agglomerated wood powder.

[0051] Embodiment 2 As Figure 4 and Figures 7 - 12 shown, the same or corresponding components as those in Embodiment 1 adopt the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference between this Embodiment 2 and Embodiment 1 lies in: As Figure 4 and Figures 7 - 8 shown, the flattening assembly 23 includes: A threaded rod 231, which is rotatably arranged inside the drying box 211, and a threaded block 232 is threadedly arranged on the threaded rod 231; The rod 233 is arranged below the threaded block 232 through the hanging rod 237. A number of groups of rake teeth 234 are arranged at the bottom of the rod 233. A sliding rod 238 is arranged between the inner walls of the drying box 211. The other end of the rod 233 is slidably arranged on the sliding rod 238 through the hanging rod 237; The extension shaft 235, one end of the extension shaft 235 is fixedly connected with one end of the threaded rod 231, and the other end of the extension shaft 235 penetrates to the outside of the drying box 211. A first bevel gear 236 is slidably sleeved on the extension shaft 235.

[0052] Further, as Figure 4 and Figures 9 - 12 shown, the second power unit 242 includes: The second bevel gear 2421 is rotatably arranged on the top of the power box 2411. The second bevel gear 2421 works synchronously with the vertical shaft 2412 through the transmission mode of the belt and the belt pulley. The second bevel gear 2421 is used to drive the first bevel gear 236; The second limiting block 2422 is horizontally slidably arranged on the inner side wall of the power box 2411 through the strip-shaped limiting groove 2423. The second limiting block 2422 drives the first bevel gear 236 to horizontally move on the extension shaft 235 through the connecting rod 2424. A convex block is arranged on the first bevel gear 236. One end of the connecting rod 2424 is rotatably arranged on the convex block through a collar, so that the connecting rod 2424 does not interfere with the rotation of the first bevel gear 236; The positioning block 2425, a number of groups of the positioning blocks 2425 are respectively arranged in the inner top of the strip-shaped limiting groove 2423 through the vertical grooves 2426. A positioning groove 2427 matched with the positioning block 2425 is arranged on the second limiting block 2422. The positioning block 2425 is arranged in the vertical groove 2426 through the elastic member; The third limiting block 2428 is slidably arranged in the first annular limiting groove 2417 of one of the power disks 2414. The third limiting block 2428 is installed on the second limiting block 2422 through the elastic telescopic member 2429. One end of the elastic telescopic member 2429 is hinged to the third limiting block 2428, and the other end of the elastic telescopic member 2429 is fixedly connected with the second limiting block 2422.

[0053] Further, as Figure 2 shown, the impurity removal component 25 includes: The gate plate 251, and the two gate plates 251 are respectively arranged to be lifted and lowered through the inner cavity 252 inside the opposite two inner side walls of the drying box 211. The bottom of the gate plate 251 is in contact with the upper surface of the outward expansion plate 226. A second hydraulic member 253 for driving the lifting of the gate plate 251 is arranged inside the inner cavity 252; The push plate 254, and a third hydraulic member 255 for driving the lifting of the push plate 254 is arranged on the strip rod 233; The impurity discharge door 256, and the two impurity discharge doors 256 are respectively opened on the side walls of the two power boxes 2411.

[0054] It should be noted that the elastic telescopic member 2429 is composed of an existing telescopic rod and a spring. The function of the elastic telescopic member 2429 is that when the power disk 2414 is in an eccentric state, the elastic telescopic member 2429 can expand and contract without affecting the eccentric rotation of the power disk 2414.

[0055] It is worth mentioning that the positioning block 2425 can fix the position of the second limit block 2422, and further fix the position of the first bevel gear 236 on the extension shaft 235, thereby controlling the start and stop of the operation of the flattening assembly 23.

[0056] It is also worth mentioning that when the flattening assembly 23 needs to work, the first hydraulic member 2416 drives the power disk 2414 and the vertical shaft 2412 to be on the same central axis. The positioning block 2425 fixes the position of the second limit block 2422, so that the first bevel gear 236 meshes with the second bevel gear 2421. During the self-rotation process of the power disk 2414, the sliding friction force between the first annular limit groove 2417 of the power disk 2414 and the third limit block 2428 is small, and the generated horizontal force is not enough to drive the second limit block 2422 to break away from the positioning block 2425 and translate in the strip-shaped limit groove 2423, ensuring the transmission stability between the first bevel gear 236 and the second bevel gear 2421; when the flattening assembly 23 does not need to work, the first hydraulic member 2416 drives the power disk 2414 to translate eccentrically. The horizontal force generated by the translation of the power disk 2414 is large enough to drive the second limit block 2422 to break away from the positioning block 2425 and translate in the strip-shaped limit groove 2423 through the third limit block 2428 and the elastic telescopic member 2429. That is, the positioning groove 2427 of the second limit block 2422 drives the positioning block 2425 to rise along the vertical groove 2426 through the inclined surface of the positioning block 2425, so as to facilitate the translation of the second limit block 2422 in the strip-shaped limit groove 2423.

[0057] In this embodiment, through the cooperation of the flattening component 23 and the power component 24, on the one hand, the wood powder after being crushed and dispersed can be evenly flattened on a number of groups of horizontal long strip sieve plates 221, which is convenient for the dried and sieved wood powder to be dried and sieved again. And during the process of the rake teeth 234 flattening the wood powder, the agglomerated wood powder can be further raked and dispersed, improving the dispersion effect of the wood powder. On the other hand, it can automatically discharge the wood powder with larger particle size remaining in the drying box 211 for unified collection, empty the drying box 211, and facilitate the drying and sieving work of the next batch of wood powder.

[0058] Specifically, when the wood powder needs to be flattened, the vertical shaft 2412 and the power disk 2414 first stop working. The first hydraulic component 2416 drives the power disk 2414 to translate to be coaxial with the vertical shaft 2412. The power disk 2414 translates and drives the second limit block 2422 to move in the strip-shaped limit groove 2423 through the third limit block 2428 and the elastic telescopic component 2429. The second limit block 2422 drives the first bevel gear 236 to horizontally move on the extension shaft 235 through the connecting rod 2424, so that the first bevel gear 236 meshes with the second bevel gear 2421. The positioning block 2425 fixes the position of the second limit block 2422, and further fixes the position of the first bevel gear 236 on the extension shaft 235, so that the first bevel gear 236 and the second bevel gear 2421 maintain stable transmission. Then, the first driving component 2419 drives the vertical shaft 2412 to rotate forward and backward repeatedly. The vertical shaft 2412 drives the second bevel gear 2421 to rotate through the transmission mode of the belt and the belt pulley. The second bevel gear 2421 drives the extension shaft 235 to rotate through the first bevel gear 236. The extension shaft 235 drives the threaded rod 231 to rotate. The threaded rod 231 drives the hanging rod 237, the strip rod 233, and the rake teeth 234 to reciprocate horizontally through the threaded block 232, so that the rake teeth 234 repeatedly flatten the wood powder. When discharging materials, the second hydraulic component 253 drives the gate plate 251 to rise and open. The third hydraulic component 255 drives the push plate 254 to descend. Then, the first driving component 2419 drives the vertical shaft 2412 to rotate forward and backward repeatedly again, so that the push plate 254 pushes the wood powder with larger particle size on the long strip sieve plate 221 into the power box 2411. Finally, the impurity discharge door 256 is opened to centrally clean the wood powder with larger particle size in the power box 2411.

[0059] Embodiment Three As Figure 2 and Figures 13 - 16 shown, where the same or corresponding components as those in Embodiment One adopt the corresponding reference numerals in Embodiment One. For the sake of simplicity, only the differences from Embodiment One will be described below. The differences between this Embodiment Two and Embodiment One are as follows: As Figures 13 - 15 shown, the discharge component 26 includes: The turntable 261 is rotatably arranged at the middle position of the bottom of the drying box 211. A strip-shaped discharge port 262 is formed on the turntable 261. A ramp for guiding materials onto the turntable 261 is arranged at the bottom of the drying box 211. The stop bar 263 is arranged on the outer bottom of the drying box 211 and is used to block the strip-shaped discharge port 262. A second driving member 264 for driving the turntable 261 to rotate is arranged at the bottom of the stop bar 263. The discharge rollers 265 are symmetrically and rotatably arranged inside the strip-shaped discharge port 262. A first gear 266 is embedded and rotatably arranged at the bottom of the turntable 261. The first gear 266 drives the two discharge rollers 265 to rotate synchronously and in opposite directions through the transmission mode of a belt and belt pulleys. An avoidance channel 267 for avoiding the first gear 266 is formed on the stop bar 263. Further, as Figure 2 and Figures 15 - 16 shown, the mixing mechanism 3 includes: The mixing cylinder 31 is arranged at the bottom of the drying box 211 and is coaxially arranged with the turntable 261. A stirring member 32 is arranged inside the mixing cylinder 31. A third driving member 33 for driving the stirring member 32 to work is arranged at the bottom of the mixing cylinder 31. The annular feeding box 34 is arranged on the inner wall of the mixing cylinder 31. An annular rack 35 for driving the first gear 266 is arranged on the annular feeding box 34. A plurality of groups of automatic blanking pipes 36 are arranged along the circumferential direction at the bottom of the annular feeding box 34. A plurality of groups of storage bins 37 are arranged on the drying box 211. The storage bins 37 supply materials to the inside of the annular feeding box 34 through a feeding pipe. The material transfer port 38 is arranged on the mixing cylinder 31. A valve is arranged on the material transfer port 38.

[0060] It should be noted that both the second driving member 264 and the third driving member 33 adopt existing stepping motors.

[0061] It is worth mentioning that the structure and function of the automatic blanking pipe 36 are both prior arts and will not be elaborated here, which realizes the automatic blanking work of the main and auxiliary materials.

[0062] In this embodiment, through the cooperation of the arranged discharging assembly 26 and the mixing mechanism 3, the automatic blanking work of the dried and screened wood powder can be carried out, and the wood powder and the main and auxiliary materials are distributed layer by layer in the mixing cylinder 31, which is convenient for the uniform mixing of the wood powder and the main and auxiliary materials and improves the mixing efficiency.

[0063] Specifically, the second driving member 264 drives the turntable 261 to rotate one circle. The annular rack 35 on the annular feeding box 34 drives the first gear 266 to rotate. The first gear 266 drives the two discharging rollers 265 to rotate synchronously and in opposite directions through the transmission mode of the belt and the pulley, so that the two discharging rollers 265 discharge the wood powder at the bottom of the drying box 211 downward from the strip-shaped discharging port 262 into the mixing cylinder 31. Then, the blocking bar 263 blocks the strip-shaped discharging port 262 to suspend the feeding. The main and auxiliary materials in the annular feeding box 34 are fed into the mixing cylinder 31 from the automatic feeding pipe 36. The storage tank 37 replenishes the annular feeding box 34 through the replenishing pipe. Then, the wood powder and the main and auxiliary materials are distributed layer by layer in the mixing cylinder 31. The third driving member 33 drives the stirring member 32 to mix the wood powder and the main and auxiliary materials in the mixing cylinder 31. Finally, the uniformly mixed mixture is transferred from the material transfer port 38 to the extrusion mechanism 4.

[0064] Embodiment 4 As Figure 1 and Figures 17 - 18 shown, the same or corresponding components as those in Embodiment 1 adopt the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences from Embodiment 1 will be described below. The difference between this Embodiment 2 and Embodiment 1 lies in: As Figures 17 - 18 shown, the extrusion mechanism 4 includes: The first barrel 41 is arranged on the frame 1. A first hopper 42 is arranged on the first barrel 41. A screw 43 is arranged inside the first barrel 41. The screw 43 is driven by a transmission system 44 arranged on the frame 1; The second barrel 45 is fixedly arranged coaxially with the first barrel 41. A second hopper 46 is arranged on the second barrel 45. A circular ring 47 is rotatably arranged at one end of the second barrel 45. A spiral blade 48 is arranged on one side of the circular ring 47. The spiral blade 48 is attached to the outer wall of the first barrel 41. A passive gear 49 is arranged on the other side of the circular ring 47. The passive gear 49 is located outside the second barrel 45 and sleeved on the outer wall of the first barrel 41. A fourth driving member 491 is arranged on the outer wall of the first barrel 41. The output shaft of the fourth driving member 491 is provided with a driving gear 492 for driving the passive gear 49; The extrusion die head 493 is arranged at the output end of the second barrel 45.

[0065] It should be noted that the mixed wood powder and main and auxiliary materials perform the microporous foaming injection molding work of the prior art in the first barrel 41. Other composite materials are additionally added in the second barrel 45. After the composite materials are injection molded in the second barrel 45, they are wrapped on the outer wall of the extrusion strip of the mixture in the first barrel 41 to form a sandwich-layered wood-plastic strip.

[0066] It should also be noted that the extrusion die head 493 adopts an existing die head for extruding sandwich round bars, which will not be elaborated here.

[0067] It is worth mentioning that the fourth driving member 491 adopts an existing stepping motor, and the structure and function of the transmission system 44 are both prior arts, which are composed of an existing motor and a reducer.

[0068] Specifically, the mixed material discharged from the mixing barrel 31 enters the first barrel 41 from the first hopper 42. The transmission system 44 drives the screw 43 to convey the mixed material. The mixed material performs the microporous foaming injection molding work of the prior art in the first barrel 41. Then, other composite materials are additionally added in the second barrel 45. The fourth driving member 491 drives the driving gear 492 to drive the spiral blade 48 to rotate through the driven gear 49 and the ring 47. The spiral blade 48 conveys. After the composite material is injection molded in the second barrel 45 by the prior art, it wraps on the outer wall of the extrusion strip of the mixed material in the first barrel 41 and is extruded from the extrusion die head 493 to form a sandwich-layered wood-plastic strip.

[0069] Embodiment Five As Figure 1 and Figures 19 - 21 shown, the same or corresponding components as those in Embodiment One adopt the corresponding reference numerals in Embodiment One. For the sake of simplicity, only the differences from Embodiment One will be described below. The differences between this Embodiment Two and Embodiment One are as follows: Further, as Figures 19 - 21 shown, the cooling mechanism 5 includes: A cooling channel 51, which is arranged on the frame 1 and filled with a coolant inside; Concentric rings 52, and the two concentric rings 52 are arranged inside the cooling channel 51 through a reinforcing rib 53; A converging cylinder 54, which is movably arranged inside the two concentric rings 52. A plurality of groups of fins 55 are arranged on the inner wall of the converging cylinder 54, and a plurality of groups of strip-shaped teeth 56 are arranged on the outer wall of the converging cylinder 54; A second gear 57, which is rotatably arranged between the two reinforcing ribs 53 on the same side through a shaft rod 58 and is used to drive the strip-shaped teeth 56 to drive the converging cylinder 54 to rotate. A fifth driving member for driving the shaft rod 58 is arranged on one of the reinforcing ribs; The cooling mechanism 5 further includes a heat convection assembly 59, and this heat convection assembly 59 includes: A third bevel gear 591, which is rotatably arranged at the bottom of the cooling channel 51; The fourth bevel gear 592 is arranged at the end of the shaft 58 and is used to drive the third bevel gear 591; The eccentric wheel 593 is rotatably arranged at the bottom of the cooling channel 51 and is linked with the third bevel gear 591 through the transmission mode of a belt and a pulley; The second annular limiting groove 594 is formed on the upper surface of the eccentric wheel 593, and a fourth limiting block 595 is slidably matched inside the second annular limiting groove 594; The third annular limiting groove 596 is formed at one port of the flow concentrating cylinder 54, a fifth limiting block 597 is slidably matched inside the third annular limiting groove 596, and a transmission rod is arranged between the fifth limiting block 597 and the fourth limiting block 595.

[0070] It should be noted that the fifth driving member adopts an existing stepping motor.

[0071] It is worth mentioning that the coolant in the cooling channel 51 exchanges heat with an existing external cold source to ensure that the temperature of the coolant in the cooling channel 51 is relatively low.

[0072] In this embodiment, through the arranged cooling mechanism 5, on the one hand, the outer layer of the wood-plastic strip can be shaped into a thread shape by using the fluidity of the liquid, the physical structure strength of the wood-plastic strip is improved, the torsional resistance of the wood-plastic strip is increased, and the appearance of a simulated rattan is imitated to increase the aesthetic property of the wood-plastic strip; on the other hand, the flow concentrating cylinder 54 reciprocates horizontally, so that the coolant in the flow concentrating cylinder 54 exchanges with the coolant in the cooling channel 51, preventing the coolant in the flow concentrating cylinder 54 from overheating and improving the cooling and forming effect of the wood-plastic strip.

[0073] Specifically, the wood-plastic strip extruded from the extrusion mechanism 4 enters the cooling channel 51, passes through the flow concentrating cylinder 54, is cooled and formed, and then is continuously output forward from the cooling channel 51. At the same time, the fifth driving member drives the second gear 57 to drive the flow concentrating cylinder 54 to rotate uniformly by means of the strip-shaped teeth 56. The fins 55 in the flow concentrating cylinder 54 disturb the coolant, so that the coolant in the flow concentrating cylinder 54 rotates and flows towards the axis. The flow generated by the centripetal force of the coolant shapes the unfixed wood-plastic strip into a thread shape. At the same time, the shaft 58 drives the eccentric wheel 593 to rotate through the transmission mode of the fourth bevel gear 592, the third bevel gear 591 and the belt and the pulley. The eccentric wheel 593 drives the flow concentrating cylinder 54 to reciprocate horizontally through the fourth limiting block 595, the transmission rod and the fifth limiting block 597, so that the coolant in the flow concentrating cylinder 54 exchanges with the coolant in the cooling channel 51, preventing the coolant in the flow concentrating cylinder 54 from overheating and ensuring that the flow concentrating cylinder 54 can continuously shape the wood-plastic strip.

[0074] Embodiment Six As Figure 22 shown, where the same or corresponding components as in the first embodiment are labeled with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment will be described below. The differences between the second embodiment and the first embodiment are as follows: A production and molding process for a polymer wood-plastic composite material, comprising the following steps: Step 1, the drying and screening process. The drying component 21 dries the material, the screening component 22 filters and intercepts materials with larger particle sizes, the power component 24 drives the screening component 22 again to disperse the agglomerated materials, the power component 24 then drives the leveling component 23 to spread the dispersed materials on the screening component 22, and the discharging component 26 distributes the dried and screened materials in a layer-by-layer and spaced manner in the vertical direction within the mixing mechanism 3; Step 2, the mixing process. The mixing mechanism 3 adds the raw and auxiliary materials into the intervals between the layer-by-layer distributed material layers, then mixes the materials and the raw and auxiliary materials evenly, and transfers the mixture into the extrusion mechanism 4; Step 3, the extrusion process. The extrusion mechanism 4 first performs microcellular foaming injection molding on the mixture in the first barrel 41, then adds the composite material into the second barrel 45, and injects and wraps the composite material on the outer wall of the extruded strip of the mixture to form a sandwich-like wood-plastic strip; Step 4, the cooling and molding process. The extruded wood-plastic strip enters the cooling channel 51 and passes through the inside of the converging cylinder 54. The converging cylinder 54 rotates itself to drive the coolant inside to flow. The flow of the coolant generated by the centripetal force shapes the wood-plastic strip into a spiral shape. The converging cylinder 54 moves horizontally repeatedly to exchange heat between the coolant inside the converging cylinder 54 and the coolant in the cooling channel 51 to cool and mold the wood-plastic strip.

[0075] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front and back", "left and right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention.

[0076] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation to the number.

[0077] As described above, this is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any change or substitution that can be easily thought of by those skilled in the art in the technical field of the present invention under the technical hint of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A production and molding device for polymer wood-plastic composite materials, characterized in that, It includes a drying and screening mechanism, a mixing mechanism, an extrusion mechanism, and a cooling mechanism arranged on a frame; The drying and screening mechanism includes a drying component arranged on the frame, a screening component arranged on the drying component, a flattening component arranged on the drying component, a power component arranged on the drying component and used to drive the screening component to disperse materials, a waste discharging component arranged on the drying component, and a discharging component arranged on the drying component; The drying component dries the materials. The power component drives the screening component to filter and intercept materials with larger particle sizes. The power component drives the screening component again to disperse the agglomerated materials. The power component drives the flattening component to spread the dispersed materials on the screening component. The discharging component distributes the dried and screened materials in a layer-by-layer and spaced manner in the vertical direction in the mixing mechanism. The mixing mechanism adds raw and auxiliary materials in the intervals between the layer-by-layer distributed material layers. The mixing mechanism then mixes the materials and the raw and auxiliary materials evenly and transfers the mixture to the extrusion mechanism. The extrusion mechanism first performs microcellular foaming injection on the mixture, and then injects and wraps another added composite material on the outer wall of the extruded strip of the mixture to form a sandwich-shaped wood-plastic strip. The cooling mechanism cools and shapes the wood-plastic strip.

2. The production and molding equipment for a polymer wood-plastic composite material according to claim 1, characterized in that, The drying component includes a drying box arranged on the frame, a hot air blower arranged on the side wall of the drying box, and a feeding port arranged on the drying box; The screening component includes: Long strip-shaped sieve plates. A plurality of groups of the long strip-shaped sieve plates are arranged side by side between the inner walls of the drying box, and adjacent two of the long strip-shaped sieve plates are hinged by a long rod; L-shaped hanging ears. A plurality of groups of the L-shaped hanging ears are respectively arranged at the two end parts of two spaced long rods. Horizontal chutes are respectively opened on the opposite two inner side walls of the drying box, and one end part of the L-shaped hanging ear is slidably matched with the inside of the chute; Counterweight blocks. A plurality of groups of the counterweight blocks are respectively arranged at the bottoms of two spaced long rods, and the long rods with counterweight blocks and the long rods with L-shaped hanging ears are arranged in a staggered and alternating manner; Expansion plates. The two expansion plates are respectively symmetrically penetrated and slidably arranged on the opposite two inner side walls of the drying box, and the two expansion plates are respectively hinged to a long rod.

3. A production and molding device for a polymer wood-plastic composite material according to claim 2, characterized in that, The flattening component includes: A threaded rod. The threaded rod is rotatably arranged inside the drying box, and a threaded block is arranged on the threaded rod in a threaded manner; A strip rod. The strip rod is arranged below the threaded block through a suspension rod, and a plurality of groups of rake teeth are arranged at the bottom of the strip rod; An extension shaft. One end part of the extension shaft is fixedly connected to one end part of the threaded rod, and the other end part of the extension shaft penetrates to the outside of the drying box. A first bevel gear is slidably sleeved on the extension shaft.

4. A production and molding device for a polymer wood-plastic composite material according to claim 3, characterized in that, The power component includes a first power unit and a second power unit. The first power unit is used to drive the screening component to work, and the second power unit is used to drive the flattening component to work; The first power unit includes: Power boxes. The two power boxes are respectively arranged on the opposite two outer side walls of the drying box. A vertical shaft is rotatably arranged inside the power box, and a mounting block is fixedly arranged on the vertical shaft; Power disk, a strip-shaped hole is formed in the power disk, the power disk is slidably arranged on the mounting block through the strip-shaped hole, a first hydraulic component is arranged on the mounting block, and the output end of the first hydraulic component is fixedly connected to one end of the strip-shaped hole; First annular limiting groove, the first annular limiting groove is formed on the circumferential side surface of the power disk, one side edge of the outer expanding plate located inside the power box is provided with a first limiting block, and the first limiting block is slidably matched inside the first annular limiting groove; The second power unit includes: Second bevel gear, the second bevel gear is rotatably arranged on the top of the power box, the second bevel gear works synchronously with the vertical shaft through the transmission mode of a belt and a belt pulley, and the second bevel gear is used to drive the first bevel gear; Second limiting block, the second limiting block is horizontally slidably arranged on the inner side wall of the power box through a strip-shaped limiting groove, and the second limiting block drives the first bevel gear to horizontally move on the extension shaft through a connecting rod; Positioning block, several groups of positioning blocks are respectively arranged in the inner top of the strip-shaped limiting groove through vertical grooves in a lifting manner, a positioning groove matched with the positioning block is formed on the second limiting block, and the positioning block is arranged in the vertical groove in a lifting manner through an elastic member; Third limiting block, the third limiting block is slidably arranged inside the first annular limiting groove of one of the power disks, and an elastic telescopic member is arranged between the third limiting block and the second limiting block.

5. A production and molding device for a polymer wood-plastic composite material according to claim 4, characterized in that, The impurity discharging assembly includes: Gate plate, two gate plates are respectively arranged in the opposite inner side walls of the drying box in a lifting manner through inner cavities, the bottom of the gate plate is in contact with the upper surface of the outer expanding plate, and a second hydraulic component for driving the gate plate to lift is arranged inside the inner cavity; Push plate, a third hydraulic component for driving the push plate to lift is arranged on the strip-shaped rod; Impurity discharging door, two impurity discharging doors are respectively formed on the side walls of the two power boxes; The discharging assembly includes: Turntable, the turntable is rotatably arranged at the middle position of the bottom of the drying box, and a strip-shaped discharging port is formed on the turntable; Blocking strip, the blocking strip is arranged on the outer bottom of the drying box and is used to block the strip-shaped discharging port; Discharging roller, two discharging rollers are symmetrically and rotatably arranged inside the strip-shaped discharging port, a first gear is embedded and rotatably arranged at the bottom of the turntable, the first gear drives the two discharging rollers to rotate synchronously and in opposite directions through the transmission mode of a belt and a belt pulley, and an avoidance channel for avoiding the first gear is formed on the blocking strip.

6. The production and molding equipment for a polymer wood-plastic composite material according to claim 5, characterized in that, The mixing mechanism includes: Mixing cylinder, the mixing cylinder is arranged at the bottom of the drying box and is coaxially arranged with the turntable, and a stirring member is arranged inside the mixing cylinder; Annular feeding box, the annular feeding box is arranged on the inner wall of the mixing cylinder, an annular rack for driving the first gear is arranged on the annular feeding box, several groups of automatic blanking pipes are arranged along the circumferential direction at the bottom of the annular feeding box, several groups of storage boxes are arranged on the drying box, and the storage boxes supply materials to the inside of the annular feeding box through feeding pipes; Transfer port, the transfer port is arranged on the mixing cylinder.

7. The production and molding equipment for a polymer wood-plastic composite material according to claim 6, characterized in that, The extrusion mechanism includes: The first barrel, the first barrel is arranged on the frame, a first hopper is arranged on the first barrel, and a screw is arranged inside the first barrel; The second barrel, the second barrel is arranged coaxially with the first barrel, a second hopper is arranged on the second barrel, a spiral blade is arranged on the inner wall of the second barrel, and the spiral blade fits the outer wall of the first barrel; The extrusion die head is arranged at the output end of the second barrel.

8. The production and molding equipment for a polymer wood-plastic composite material according to claim 7, characterized in that, The cooling mechanism includes: The cooling channel is arranged on the frame and filled with coolant inside; The concentric rings, two concentric rings are arranged inside the cooling channel through the reinforcing ribs; The converging cylinder is movably arranged inside the two concentric rings, a plurality of groups of fins are arranged on the inner wall of the converging cylinder, and a plurality of groups of strip-shaped teeth are arranged on the outer wall of the converging cylinder; The second gear is rotatably arranged between the two reinforcing ribs on the same side through a shaft rod, and is used to drive the strip-shaped teeth to drive the converging cylinder to rotate.

9. The production and molding equipment for a polymer wood-plastic composite material according to claim 8, characterized in that, The cooling mechanism further includes a heat convection component, and this heat convection component includes: The third bevel gear is rotatably arranged at the bottom of the cooling channel; The fourth bevel gear is arranged at the end of the shaft rod and is used to drive the third bevel gear; The eccentric wheel is rotatably arranged at the bottom of the cooling channel and is linked with the third bevel gear through the transmission mode of the belt and the pulley; The second annular limiting groove is opened on the upper surface of the eccentric wheel, and a fourth limiting block is slidably fitted inside the second annular limiting groove; The third annular limiting groove is opened at one port of the converging cylinder, a fifth limiting block is slidably fitted inside the third annular limiting groove, and a transmission rod is arranged between the fifth limiting block and the fourth limiting block.

10. A production and molding process for a polymer wood-plastic composite material, which is applied to a production and molding device for a polymer wood-plastic composite material as described in any one of claims 1-9, and is characterized in that, Including the following steps: Step 1, the drying and screening process, the drying component dries the material, the screening component filters and intercepts the materials with larger particle sizes, the power component drives the screening component to disperse the agglomerated materials again, the power component then drives the flattening component to spread the dispersed materials flat on the screening component, and the discharging component distributes the dried and screened materials in a vertically layered and spaced manner inside the mixing mechanism; Step 2, the mixing process, the mixing mechanism adds the raw and auxiliary materials in the intervals of the layered materials, then mixes the materials and the raw and auxiliary materials evenly, and transfers the mixed materials into the extrusion mechanism; Step 3, the extrusion process, the extrusion mechanism first performs microcellular foaming injection on the mixed materials in the first barrel, then adds the composite materials into the second barrel, and injects and wraps the composite materials on the outer wall of the extruded strip of the mixed materials to form a sandwich-layered wood-plastic strip; Step 4, the cooling and forming process, the extruded wood-plastic strip enters the cooling channel and passes through the inside of the converging cylinder. The self-rotation of the converging cylinder drives the coolant inside it to flow. The flow of the coolant generated by the centripetal force shapes the wood-plastic strip into a spiral shape. The converging cylinder moves horizontally repeatedly to exchange heat between the coolant inside the converging cylinder and the coolant in the cooling channel to cool and form the wood-plastic strip.

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