Flexible regulation and control forming equipment and forming process for wood-plastic composite board

Abstract

The invention is suitable for the field of wood-plastic composite materials, and provides wood-plastic composite board flexible regulation and control forming equipment, a material regulation and control cylinder comprises an upper positioning cylinder, a material pressing assembly I, a material dispersing assembly and a material pressing assembly II which are detachably arranged on a lower positioning cylinder, and the upper positioning cylinder and the lower positioning cylinder are in a through shape; the first material pressing assembly is used for periodically pushing materials in the upper positioning cylinder. The second material pressing assembly is used for periodically pushing materials in the lower positioning cylinder. The material dispersing assembly is used for dispersing materials pushed by the first material pressing assembly and the second material pressing assembly. The material dispersing assembly comprises a rotary dispersing net and a fixed dispersing net, and the fixed dispersing net is provided with water absorption holes and vent holes which are communicated with the outside; the material dispersing assembly sequentially makes contact with materials, comprehensive dewatering and degassing are achieved, the materials are comprehensively dispersed and mixed, uniform and stable dispersion of wood fiber materials, thermoplastic plastics and additive components is facilitated, and stable performance and stable quality of the formed wood-plastic composite board are promoted.

Description

Technical Field

[0001] The present invention relates to the field of wood-plastic composite materials, and particularly to a flexible control forming device and forming process for wood-plastic composite boards. Background Art

[0002] Wood-plastic composite boards are a new type of environmentally friendly material made from wood fiber materials and thermoplastic plastics through a composite process; they combine the natural texture of wood and the durability of plastics and are widely used in fields such as construction, furniture, and landscape gardening; among them, common types of thermoplastic plastics include polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), etc.; additives include coupling agents, stabilizers, colorants, etc.

[0003] During the forming process of wood-plastic composite boards, if the raw material mixing control is not well done, it is very easy to affect the quality of the produced wood-plastic composite boards. For example, a wood-plastic board forming device and forming process in the prior art (application number 202210127375) discloses that "there are a large number of hydroxyl groups in the molecular structure of the wood fiber materials in wood powder, which results in strong hydrogen bond interactions between and within the cellulose macromolecular chains. Coupled with the anisotropy of the physical structure of single fibers, it jointly leads to the asymmetry of the overall structure of single fibers. Single fibers have strong surface chemical polarity, making the fibers have strong water absorption. At the same time, PE plastic is non-polar and hydrophobic, resulting in poor binding between the two; during the production process of wood-plastic materials, since wood powder is dispersed in plastic and wrapped by plastic, the addition of a large amount of wood powder will cause difficulty in dispersion, and the water absorption of wood powder will make the wood powder easily agglomerate. After the wood-plastic board is formed, stress is easily concentrated at the position where the wood powder agglomerates, thus greatly reducing the performance of the wood-plastic board". Although it can use the "first shear rod, second shear rod, and third shear rod" to roll and shear the wood powder, because the outer surfaces of the "first shear rod, second shear rod, and third shear rod" are in a screw-like, gear-like structure or a structure identical to the screw shape of a twin-screw extruder, this will cause that through a certain degree of rolling and shearing, the material will not be fully contacted, and there are certain limitations in the control of the full dispersion and mixing of the material.

[0004] In summary, during the forming process of wood-plastic composite boards, if the prior art cannot well control the raw material mixing, it is easy to affect the quality of the produced wood-plastic composite boards. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a flexible control forming device and forming process for wood-plastic composite boards, aiming to solve the problems existing in the above-mentioned prior art.

[0006] Specifically: The wood-plastic composite board flexible control forming equipment includes a material control box and a wood-plastic forming box. The material control box is used to control the mixing of wood fiber materials, thermoplastic plastics, and additives and supply them to the wood-plastic forming box. The wood-plastic forming box is used for the forming of wood-plastic composite boards. Inside the material control box, a material control cylinder is installed. The material control cylinder includes: An upper positioning cylinder detachably installed on the lower positioning cylinder. The upper positioning cylinder and the lower positioning cylinder are on the same straight line and are in a through state. A first material pressing component assembled inside the upper positioning cylinder. The first material pressing component is used to periodically push the materials inside the upper positioning cylinder. A second material pressing component assembled inside the lower positioning cylinder. The second material pressing component is used to periodically push the materials inside the lower positioning cylinder. A material dispersion component assembled between the upper positioning cylinder and the lower positioning cylinder. The material dispersion component is used to disperse the materials pushed by the first material pressing component and the second material pressing component. Among them, the material dispersion component includes a rotating dispersion net and a fixed dispersion net. The rotating dispersion net and the fixed dispersion net are arranged side by side. The fixed dispersion net is provided with water absorption holes and ventilation holes communicating with the outside.

[0007] After the wood fiber material, thermoplastic plastic, and additive are mixed in a certain proportion, they are added into the upper positioning cylinder and the lower positioning cylinder. The first material pressing component is used to perform cycles with different pushing degrees and different durations inside the upper positioning cylinder to push the materials towards the material dispersion component; and the second material pressing component is used in cooperation to perform cycles with different pushing degrees and different durations inside the lower positioning cylinder to push the materials towards the material dispersion component; plus the mesh subdivision and density attributes of the rotating dispersion net and the fixed dispersion net, the material dispersion component can sequentially contact the materials through the rotating dispersion net and the fixed dispersion net, achieving comprehensive water removal and degassing, and achieving comprehensive dispersion and mixing of the materials, which is beneficial to the uniform and stable dispersion of the wood fiber material, thermoplastic plastic, and additive components, and promotes the stable performance and quality of the formed wood-plastic composite board.

[0008] The technical solution of the present application will be further described below: In one embodiment, the material dispersion component further includes a positioning ring fixed between the upper positioning cylinder and the lower positioning cylinder; the fixed dispersion net is fixed to the bottom of the positioning ring; the rotating dispersion net is rotatably assembled on the top of the positioning ring; the rotating dispersion net and the fixed dispersion net are independently arranged.

[0009] Further, both the first material pressing component and the second material pressing component include a pressing plate and two first hydraulic expansion rods fixed on the pressing plate; The first material pressing component further includes: A threaded pipe fixedly penetrated on the pressing plate; A threaded rod passes through the threaded tube; a through hole for the threaded rod to pass through is provided at the top of the upper positioning cylinder. A fixed seat is fixed to one side of the rotating dispersion net; the other side of the fixed seat is rotatably assembled at the end of the threaded rod. A feeding sealing door is assembled on the pressing plate; the feeding sealing door is used for feeding materials into the upper positioning cylinder and the lower positioning cylinder after being opened.

[0010] During the movement of the pressing plate, through the threaded transmission cooperation of the threaded rod and the threaded tube, the rotating dispersion net is driven to rotate, so that the rotating dispersion net and the fixed dispersion net are continuously misaligned. During the process of the rotating dispersion net and the fixed dispersion net using their meshes with the attributes of subdivision and density to sequentially and comprehensively contact the materials, the materials are sequentially and comprehensively and evenly cut, and the materials are dispersed and mixed, so as to form finer dispersion units and promote the overflow of moisture and air.

[0011] In one embodiment, a material control system is assembled on the lower positioning cylinder. The material control system includes: An outer fixed ring is detachably installed between the upper positioning cylinder and the lower positioning cylinder and is located outside the lower positioning cylinder. A plurality of insertion grooves are provided on the outer fixed ring; the insertion grooves penetrate through the outer fixed ring.

[0012] Further, the material control system further includes: A guide tube is connected to the second pressing component and communicates with the inside of the lower positioning cylinder through the second pressing component; an electromagnetic valve I is installed inside the guide tube. A plurality of unit material control components are in one-to-one correspondence with the plurality of insertion grooves; one end of the unit material control component is arranged on the insertion groove, and the other end communicates with the guide tube.

[0013] Still further, the unit material control component includes: A material control plate is movably inserted into the insertion groove; a material guide cavity is provided inside the material control plate. A plurality of dispersion holes are arranged in multiple rows and columns on the material control plate; the dispersion holes communicate with the material guide cavity and are used for discharging the materials inside the material guide cavity; one-way valves are installed on the dispersion holes. An abutting plate is fixed at the end of the material control plate. A second hydraulic telescopic rod has one end fixed to the abutting plate and the other end fixed to the outer fixed ring; the second hydraulic telescopic rod adjusts the degree of movable insertion of the material control plate inside the insertion groove through its own telescopic movement.

[0014] The unit material control component further includes a unit material control tube, and the unit material control tube includes: An outer positioning hose, with one end connected to the material regulation plate and the other end connected to the material guiding cylinder; An inner elastic hose is inserted inside the outer positioning hose. There is a gap reserved between the inner elastic hose and the outer positioning hose, and the gap forms a sealed cavity. An inflation column and an air release port are installed on the gap. The inflation column is connected to a suction fan; a solenoid valve II is installed on the air release port. The inner elastic hose is used to guide the material.

[0015] When using the first material pressing component and the second material pressing component to cooperate to reciprocally push the material back and forth, when changing the pushing degree of one of them, the excess material will enter the inside of the material guiding cylinder. The excess material will be dispersed into multiple unit material regulation components. The unit material regulation component uses a unit material regulation pipe to introduce the material into the material guiding cavity inside the material regulation plate. The material guiding cavity uses multiple dispersion holes to disperse the material into the axially flowing material inside the upper positioning cylinder and the lower positioning cylinder in the radial direction; realizing multi-point axial mobilization and dispersion of the material on the basis of the radial dispersion of the material by the material dispersion component; achieving comprehensive and systematic dispersion and mixing of the material in multiple dimensions to promote the stable performance of the subsequent wood-plastic composite board. At the same time, during the axial mobilization of the material through the unit material regulation pipe, the suction fan is used to adjust the inflation speed of the gap between the inner elastic hose and the outer positioning hose. At the same time, the solenoid valve II is used for deflation at the air release port, so that the gap expands irregularly to knead the material inside the inner elastic hose, realizing the mixing of the mobilized material itself during the refined axial mobilization of the material; after the material dispersion and mixing are completed, the solenoid valve II is closed, and the suction fan is used to fill a large amount of gas, prompting the inner elastic hose to expand inward to extrude the material, avoiding a large amount of material remaining in the pipe body when there is no thrust.

[0016] In one of the embodiments, the upper positioning cylinder includes: A positioning cylinder body, detachably installed on the lower positioning cylinder; A support plate, arranged on the outer side of the end of the positioning cylinder body and independently arranged from the positioning cylinder body; Multiple fixing plates, with one end fixed on the positioning cylinder body and the other end fixed on the support plate.

[0017] Furthermore, an elastic band is arranged on the inner wall of the positioning cylinder body near one end of the lower positioning cylinder. The elastic band is hermetically connected to the inner wall of the positioning cylinder body. An inflation cavity is reserved between the elastic band and the inner wall of the positioning cylinder body. The inflation cavity is inflated and deflated through a blower and a valve.

[0018] Therefore, during the radial dispersion of the material, axial multi-point mobilization and dispersion of the material are carried out. During this process, the inflation cavity is inflated and deflated through a blower and a valve, so that the elastic band expands periodically, so as to further knead the axially flowing material at multiple points of the axial mobilization and dispersion of the material, realizing more efficient, comprehensive and systematic dispersion and mixing of the material, so as to promote the stable performance of the subsequent wood-plastic composite board.

[0019] Another object of the present invention is to provide a flexible control forming process for wood-plastic composite boards. Using the above-mentioned flexible control forming equipment for wood-plastic composite boards, the process includes the following steps: Step 1: After mixing the wood fiber material, thermoplastic plastic and additive in a certain proportion, add them into the upper positioning cylinder and the lower positioning cylinder; Step 2: Use the first pressure feeding component to perform cycles with different pushing degrees and different durations inside the upper positioning cylinder to push the material towards the material dispersion component; and cooperate with the use of the second pressure feeding component to perform cycles with different pushing degrees and different durations inside the lower positioning cylinder to push the material towards the material dispersion component; Step 3: The material dispersion component uses the meshes with the attributes of subdivision and densification of the rotating dispersion mesh and the fixed dispersion mesh to sequentially and comprehensively contact the material, and sequentially and comprehensively and evenly cut and disperse and mix the material.

[0020] Compared with the prior art, the present invention can achieve: 1) After mixing the wood fiber material, thermoplastic plastic and additive in a certain proportion, add them into the upper positioning cylinder and the lower positioning cylinder. Use the first pressure feeding component to perform cycles with different pushing degrees and different durations inside the upper positioning cylinder to push the material towards the material dispersion component; and cooperate with the use of the second pressure feeding component to perform cycles with different pushing degrees and different durations inside the lower positioning cylinder to push the material towards the material dispersion component; combined with the attributes of subdivision and densification of the meshes of the rotating dispersion mesh and the fixed dispersion mesh, it is realized that the material dispersion component sequentially contacts the material through the rotating dispersion mesh and the fixed dispersion mesh, achieving comprehensive water removal and degassing, and comprehensively dispersing and mixing the material, which is beneficial to the uniform and stable dispersion of the components of the wood fiber material, thermoplastic plastic and additive, and promoting the stable performance and quality of the formed wood-plastic composite board; 2) Start the two hydraulic telescopic rods on the first pressure feeding component to expand and contract, drive the pressure plate to move back and forth inside the upper positioning cylinder, and complete the use of the first pressure feeding component to perform cycles with different pushing degrees and different durations inside the upper positioning cylinder to push the material towards the material dispersion component; during the movement of the pressure plate, through the threaded transmission cooperation of the threaded rod and the threaded tube, drive the rotating dispersion mesh to rotate, forming continuous misalignment between the rotating dispersion mesh and the fixed dispersion mesh. During the process of the rotating dispersion mesh and the fixed dispersion mesh sequentially and comprehensively contacting the material using the meshes with the attributes of subdivision and densification, sequentially and comprehensively and evenly cut the material and disperse and mix the material, so as to form finer dispersion units and promote the overflow of moisture and air; 3) During the process of using the first blanking component and the second blanking component to cooperate and reciprocate to push the material back and forth, when changing the pushing degree of one of them, the excess material will enter the inside of the guide cylinder. The excess material will be dispersed into multiple unit material regulating parts. The unit material regulating part uses the unit material regulating pipe to introduce the material into the guide cavity inside the material regulating plate. The guide cavity uses multiple dispersion holes to disperse the material into the axially flowing material inside the upper positioning cylinder and the lower positioning cylinder in the radial direction; realizing axial multi-point mobilization and dispersion of the material on the basis of radial dispersion of the material by the material dispersion component; achieving comprehensive and systematic dispersion and mixing of the material in multiple dimensions to promote the stable performance of the subsequent wood-plastic composite board; 4) During the axial mobilization of the material through the unit material regulating pipe, use the exhaust fan to adjust the inflation speed of the gap between the inner elastic hose and the outer positioning hose. At the same time, add the solenoid valve 2 for deflation at the deflation port, so that the gap expands irregularly to knead the material inside the inner elastic hose, realizing the mixing of the mobilized material itself during the fine axial mobilization of the material; 5) After the material dispersion and mixing are completed, close the solenoid valve 2, and use the exhaust fan to inflate a large amount of gas to cause the inner elastic hose to expand inward to squeeze out the material, avoiding a large amount of material remaining in the pipe body when there is no thrust; 6) During the radial dispersion of the material, perform axial multi-point mobilization and dispersion of the material. During this process, inflate and deflate the inflation cavity through the blower and the valve to make the elastic belt expand periodically, so as to further knead the axially flowing material at multiple points of the axially mobilized and dispersed material, realizing more efficient, comprehensive and systematic dispersion and mixing of the material to promote the stable performance of the subsequent wood-plastic composite board. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of a wood-plastic composite board flexible control forming device in an embodiment of the present invention; Figure 2 It is a schematic structural diagram of a material regulating cylinder in an embodiment of the present invention; Figure 3 For Figure 2 the exploded view of the material regulating cylinder in; Figure 4 For Figure 2 the sectional view of the material regulating cylinder in; Figure 5 ForFigure 2 Demonstration diagram of the use of a material regulation plate inserted into the middle material regulation cylinder; Figure 6 For Figure 3 Schematic structural diagram of the first pressure feeding component in the middle; Figure 7 For Figure 3 Schematic structural diagram of the middle material dispersion component; Figure 8 For Figure 7 Exploded view of the middle material dispersion component; Figure 9 For Figure 7 Cross-sectional view of the middle material dispersion component; Figure 10 For Figure 3 Schematic structural diagram of the middle material regulation system; Figure 11 For Figure 10 Demonstration diagram of the middle material regulation system inserting the material regulation plate; Figure 12 For Figure 10 Schematic structural diagram of the middle unit material regulation part; Figure 13 For Figure 12 Schematic structural diagram of the middle unit material regulation tube; Figure 14 For Figure 3 Cross-sectional view of the upper positioning cylinder in the middle; Figure 15 Transverse sectional structural diagram of the upper positioning cylinder, lower positioning cylinder, first pressure feeding component, and second pressure feeding component in an embodiment of the present invention.

[0023] In the reference numerals: Material regulation box 1, wood-plastic forming box 2, control panel 3, wood-plastic board discharge box 4, feeding place 5; Upper positioning cylinder 100, first pressure feeding component 200, material regulation system 300, lower positioning cylinder 400, material dispersion component 500, second pressure feeding component 600; Fixed plate 110, support disk 120, positioning cylinder body 130, elastic band 140; Threaded rod 210, first hydraulic telescopic rod 220, pressure feeding disk 230, threaded tube 240, fixed seat 250, feeding sealing door 260; Material guiding cylinder 310, insertion groove 320, outer fixing ring 330, unit material regulation part 340; material regulation plate 341, dispersion hole 342, second hydraulic telescopic rod 343, abutting plate 344, unit material regulation tube 345; outer positioning hose 3451, inner elastic hose 3452; Rotating dispersion net 510, positioning ring 520, fixed dispersion net 530; Material area A, Material area B, Material area C, Material area D, Material area E, Material area F, Material area G, Material area H, Material area I. Detailed implementation mode

[0024] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The specific implementation of the present invention will be described in detail below in combination with specific embodiments.

[0025] In the embodiment of the present invention, as Figures 1 - 5 and Figures 7 - 9 shown: The flexible regulation and forming equipment for wood-plastic composite boards includes a material regulation box 1 and a wood-plastic forming box 2. The material regulation box 1 is used to regulate and mix wood fiber materials, thermoplastic plastics and additives, and supply them to the wood-plastic forming box 2. The wood-plastic forming box 2 is used for forming wood-plastic composite boards. A material regulation cylinder is installed inside the material regulation box 1. Therefore, after the wood fiber material, thermoplastic plastic and additive are mixed in a certain proportion, they are added into the material regulation box 1 (the proportions of the wood fiber material, thermoplastic plastic and additive recorded here belong to the prior art and are not what the present application intends to protect, so they are elaborated in detail here). The material regulation box 1 is used to regulate and mix the wood fiber material, thermoplastic plastic and additive, so as to promote the full and uniform mixing of the regulated and mixed wood fiber material, thermoplastic plastic and additive. Then, the regulated and mixed wood fiber material and thermoplastic plastic are introduced into the wood-plastic forming box 2, and the wood-plastic forming box 2 is used to form wood-plastic composite boards from the wood fiber material and thermoplastic plastic. It should be supplemented here that: A control panel 3 is installed outside the side of the wood-plastic forming box 2, and a wood-plastic board discharge box 4 is installed on the front end face of the wood-plastic forming box 2. The control panel 3 is prior art, and its detailed structure can be obtained from existing literature and periodicals, and can also be directly purchased on the market, or components can be purchased on the market for assembly, etc. It is not what the present invention intends to protect, so it will not be elaborated in detail here. The material regulation cylinder includes: An upper positioning cylinder 100 detachably installed on the lower positioning cylinder 400. The upper positioning cylinder 100 and the lower positioning cylinder 400 are on the same straight line and are in a through state. A first pressure material assembly 200, assembled inside the upper positioning cylinder 100. The first pressure material assembly 200 is used to periodically push the materials inside the upper positioning cylinder 100. A second pressure material assembly 600, assembled inside the lower positioning cylinder 400. The second pressure material assembly 600 is used to periodically push the materials inside the lower positioning cylinder 400. The material dispersion assembly 500 is assembled between the upper positioning cylinder 100 and the lower positioning cylinder 400; the material dispersion assembly 500 is used to disperse the materials pushed by the first material pressing assembly 200 and the second material pressing assembly 600. Among them, the material dispersion assembly 500 includes a rotating dispersion net 510 and a fixed dispersion net 530. The rotating dispersion net 510 and the fixed dispersion net 530 are arranged side by side. The fixed dispersion net 530 is provided with water absorption holes and ventilation holes communicating with the outside.

[0026] It should be noted here that: the setting method of the water absorption holes and ventilation holes, and the way the water absorption holes and ventilation holes communicate with the outside all belong to the prior art. Their detailed structures can be known from existing literature and periodicals, and can also be directly purchased on the market, or components can be purchased on the market for composition, etc.; they are not what the present invention aims to protect and will not be elaborated in detail here. Therefore, after the wood fiber material, thermoplastic plastic and additive are mixed in a certain proportion, they are added into the upper positioning cylinder 100 and the lower positioning cylinder 400. The first material pressing assembly 200 is used to perform cycles with different pushing degrees and different durations inside the upper positioning cylinder 100 to push the materials towards the material dispersion assembly 500; and the second material pressing assembly 600 is used in cooperation to perform cycles with different pushing degrees and different durations inside the lower positioning cylinder 400 to push the materials towards the material dispersion assembly 500; combined with the mesh subdivision and density attributes of the rotating dispersion net 510 and the fixed dispersion net 530, the material dispersion assembly 500 sequentially contacts the materials through the rotating dispersion net 510 and the fixed dispersion net 530, achieving comprehensive water removal and degassing, and comprehensively dispersing and mixing the materials, which is beneficial to the uniform and stable dispersion of the wood fiber material, thermoplastic plastic and additive components, and promotes the stable performance and quality of the formed wood-plastic composite board.

[0027] In the embodiment of the present invention, as Figures 7 - 9 shown: the material dispersion assembly 500 further includes a positioning ring 520. The positioning ring 520 is fixed between the upper positioning cylinder 100 and the lower positioning cylinder 400; the fixed dispersion net 530 is fixed at the bottom of the positioning ring 520; the rotating dispersion net 510 is rotatably assembled at the top of the positioning ring 520; the rotating dispersion net 510 and the fixed dispersion net 530 are independently arranged.

[0028] Furthermore, as Figures 4 - 9 shown: both the first material pressing assembly 200 and the second material pressing assembly 600 include a material pressing plate 230 and two first hydraulic expansion rods 220. The two first hydraulic expansion rods 220 are fixed on the material pressing plate 230; The first material pressing assembly 200 further includes: a threaded tube 240, which is fixedly penetrated on the material pressing plate 230; The threaded rod 210 passes through the threaded tube 240; a through hole for the movable insertion of the threaded rod 210 is provided at the top of the upper positioning cylinder 100; The fixed seat 250 has one side fixed to the rotating dispersion net 510; the other side of the fixed seat 250 is rotatably assembled at the end of the threaded rod 210; The feeding sealing door 260 is assembled on the pressing plate 230; the feeding sealing door 260 is used for feeding materials into the upper positioning cylinder 100 and the lower positioning cylinder 400 after being opened.

[0029] Therefore, start the telescopic movement of the two hydraulic expansion rods 220 on the pressing component 200 to drive the pressing plate 230 to move back and forth inside the upper positioning cylinder 100, complete the cycle of different propulsion degrees and different durations of using the pressing component 200 inside the upper positioning cylinder 100, and push the materials towards the material dispersion component 500; during the movement of the pressing plate 230, through the threaded transmission cooperation of the threaded rod 210 and the threaded tube 240, drive the rotating dispersion net 510 to rotate, so that the rotating dispersion net 510 and the fixed dispersion net 530 are continuously misaligned, and during the process of the rotating dispersion net 510 and the fixed dispersion net 530 fully contacting the materials in turn by using their meshes with the attributes of subdivision and densification, cut the materials evenly in turn, disperse and mix the materials, so as to form finer dispersion units and promote the overflow of moisture and air.

[0030] Similarly, start the telescopic movement of the two hydraulic expansion rods 220 on the pressing component 600 to drive the pressing plate 230 to move back and forth inside the lower positioning cylinder 400, complete the cycle of different propulsion degrees and different durations of using the pressing component 600 inside the lower positioning cylinder 400, and push the materials towards the material dispersion component 500.

[0031] In the embodiment of the present invention, as Figure 4 、 Figure 5 and Figure 10 shown: a material regulation system 300 is assembled on the lower positioning cylinder 400, and the material regulation system 300 includes: The outer fixing ring 330 is detachably installed between the upper positioning cylinder 100 and the lower positioning cylinder 400 and is located outside the lower positioning cylinder 400; A plurality of insertion grooves 320 are provided on the outer fixing ring 330; the insertion grooves 320 penetrate through the outer fixing ring 330.

[0032] Furthermore, as Figure 4 、 Figure 5 and Figure 10 shown: the material regulation system 300 further includes: The material guiding cylinder 310 is connected to the second material pressing component 600 and communicates with the inside of the lower positioning cylinder 400 through the second material pressing component 600; a first electromagnetic valve is installed inside the material guiding cylinder 310; A plurality of unit material regulating members 340 are in one-to-one correspondence with a plurality of insertion grooves 320; one end of the unit material regulating member 340 is arranged on the insertion groove 320, and the other end communicates with the material guiding cylinder 310.

[0033] As Figure 4 , Figure 5 and Figure 10 shown: The unit material regulating member 340 includes: A material regulating plate 341 is movably inserted inside the insertion groove 320; a material guiding cavity is formed inside the material regulating plate 341; A plurality of dispersion holes 342 are arranged in multiple rows and columns on the material regulating plate 341; the dispersion holes 342 communicate with the material guiding cavity and are used to discharge the materials inside the material guiding cavity; one-way valves are installed on the dispersion holes 342; A abutting plate 344 is fixed at the end of the material regulating plate 341; A second hydraulic telescopic rod 343 has one end fixed on the abutting plate 344 and the other end fixed on the outer fixing ring 330; the second hydraulic telescopic rod 343 adjusts the degree of movable insertion of the material regulating plate 341 inside the insertion groove 320 by its own expansion and contraction.

[0034] As Figure 12 and Figure 13 shown: The unit material regulating member 340 further includes a unit material regulating pipe 345, and the unit material regulating pipe 345 includes: An outer positioning hose 3451 has one end connected to the material regulating plate 341 and the other end connected to the material guiding cylinder 310; An inner elastic hose 3452 is inserted inside the outer positioning hose 3451, and a gap is reserved between the inner elastic hose 3452 and the outer positioning hose 3451, and the gap is a sealed cavity; an inflation column and an air release port are added to the gap, the inflation column is connected to an exhaust fan; a second electromagnetic valve is installed on the air release port; the inner elastic hose 3452 is used for guiding materials.

[0035] It should be noted here that the outer positioning hose 3451 specifically refers to a hose that can be bent in any position and does not have the property of elastic expansion and contraction; while the inner elastic hose 3452 has both the properties of being able to be bent in any position and elastic expansion and contraction; Therefore, during the process of using the first blank holder assembly 200 and the second blank holder assembly 600 to cooperate and reciprocally push the material back and forth, when changing the advancing degree of one of them, the excess material will enter the inside of the guide cylinder 310. The excess material will be dispersed into multiple unit material control components 340. The unit material control component 340 uses the unit material control pipe 345 to introduce the material into the material guide cavity inside the material control plate 341. The material guide cavity uses multiple dispersion holes 342 to disperse the material into the axially flowing material inside the upper positioning cylinder 100 and the lower positioning cylinder 400 in the radial direction (refer to Figure 15 , the material is radially added through the feeding point 5, and the material is sequentially added to the axially flowing material areas A, B, C, D, E, F, G, H, and I); realizing multi-point axial transfer and dispersion of the material on the basis of the radial dispersion of the material by the material dispersion assembly 500; achieving comprehensive and systematic dispersion and mixing of the material in multiple dimensions to promote the stability of the performance of the subsequent wood-plastic composite board.

[0036] Meanwhile, during the axial transfer of the material through the unit material control pipe 345, the speed of inflating the gap between the inner elastic hose 3452 and the outer positioning hose 3451 is adjusted by using a suction fan. At the same time, the second solenoid valve is used for deflation at the air release port, so that the gap can be inflated irregularly to knead the material inside the inner elastic hose 3452, realizing the mixing of the transferred material itself during the fine axial transfer of the material; After the material dispersion and mixing are completed, the second solenoid valve is closed, and a large amount of gas is filled by using a suction fan to promote the inner elastic hose 3452 to expand inward to squeeze out the material, avoiding a large amount of material remaining inside the pipe body when there is no thrust.

[0037] In the embodiment of the present invention, as Figure 14 shown: The upper positioning cylinder 100 includes: A positioning cylinder body 130, detachably installed on the lower positioning cylinder 400; A support disk 120, arranged on the outer side of the end of the positioning cylinder body 130 and independently arranged from the positioning cylinder body 130; Multiple fixing plates 110, one end of each of which is fixed on the positioning cylinder body 130, and the other end is fixed on the support disk 120.

[0038] Further, as Figure 14 shown: An elastic band 140 is arranged on the inner wall of the positioning cylinder body 130 near one end of the lower positioning cylinder 400. The elastic band 140 is hermetically connected to the inner wall of the positioning cylinder body 130. An inflation cavity is reserved between the elastic band 140 and the inner wall of the positioning cylinder body 130, and the inflation cavity is inflated and deflated through a blower and a valve.

[0039] Therefore, when dispersing materials radially, the materials are mobilized and dispersed at multiple points in the column direction. During this process, the inflation chamber is inflated and deflated through a blower and a valve, so that the elastic belt 140 expands periodically, in order to further knead the materials flowing in the column direction at multiple points where the materials are mobilized and dispersed in the column direction, realizing a more efficient, comprehensive and systematic dispersion and mixing of the materials, so as to promote the stable performance of the subsequent wood-plastic composite board.

[0040] Another object of the present invention is to provide a flexible control forming process for wood-plastic composite boards. Using the above-mentioned flexible control forming equipment for wood-plastic composite boards, it includes the following steps: Step 1: After the wood fiber material, thermoplastic plastic and additive are mixed in a certain proportion, they are added into the upper positioning cylinder 100 and the lower positioning cylinder 400. Step 2: Use the first pressing component 200 to perform cycles with different advancing degrees and different durations inside the upper positioning cylinder 100 to push the materials towards the material dispersion component 500; and cooperate with the use of the second pressing component 600 to perform cycles with different advancing degrees and different durations inside the lower positioning cylinder 400 to push the materials towards the material dispersion component 500. Step 3: The material dispersion component 500 sequentially and comprehensively contacts the materials through the meshes with the attributes of subdivision and densification of the rotating dispersion mesh 510 and the fixed dispersion mesh 530, and sequentially and comprehensively and evenly cuts and disperses and mixes the materials.

[0041] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more. In the description of the present invention, although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible control molding device and molding process for wood-plastic composite panels, comprising a material control box (1) and a wood-plastic molding box (2), wherein the material control box (1) is used to control mixed wood fiber materials, thermoplastic plastics and additives and provide them to the wood-plastic molding box (2), and the wood-plastic molding box (2) is used to mold wood-plastic composite panels; a material control cylinder is installed inside the material control box (1); the characteristics are as follows: The material control cylinder includes: an upper positioning cylinder (100) detachably mounted on the lower positioning cylinder (400), wherein the upper positioning cylinder (100) and the lower positioning cylinder (400) are located on the same straight line and are in a through-connection state; A material pressing component (200) is assembled inside the upper positioning cylinder (100); the material pressing component (200) is used to periodically push the material inside the upper positioning cylinder (100); The second material pressing component (600) is assembled inside the lower positioning cylinder (400); the second material pressing component (600) is used to periodically push the material inside the lower positioning cylinder (400); A material dispersing assembly (500) is assembled between the upper positioning cylinder (100) and the lower positioning cylinder (400); the material dispersing assembly (500) is used to disperse the material pushed by the material pressing assembly 1 (200) and the material pressing assembly 2 (600); The material dispersion component (500) comprises a rotating dispersion net (510) and a fixed dispersion net (530), the rotating dispersion net (510) and the fixed dispersion net (530) are arranged side by side, and the fixed dispersion net (530) is provided with water absorption holes and ventilation holes connected to the outside.

2. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 1 is characterized in that: The material dispersing assembly (500) further comprises a positioning ring (520), wherein the positioning ring (520) is fixed between the upper positioning cylinder (100) and the lower positioning cylinder (400); and a fixed dispersing net (530) is fixed at the bottom of the positioning ring (520); The rotating dispersion net (510) is rotatably assembled on the top of the positioning ring (520); The rotating dispersion net (510) and the fixed dispersion net (530) are arranged independently of each other.

3. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 2 is characterized in that: The material pressing component 1 (200) and the material pressing component 2 (600) both include a material pressing plate (230) and two hydraulic telescopic rods 1 (220), and the two hydraulic telescopic rods 1 (220) are fixed on the material pressing plate (230); The pressing component 1 (200) further comprises: A threaded tube (240) is passed through and fixed on the pressing plate (230); The threaded rod (210) passes through the threaded tube (240); a through hole is formed at the top of the upper positioning cylinder (100) to cooperate with the threaded rod (210) to movably pass through; A fixed seat (250) having one side fixed to the rotating dispersion net (510); and the other side of the fixed seat (250) being rotatably assembled on the end of the threaded rod (210); The material loading sealing door (260) is assembled on the material pressing plate (230); after being opened, the material loading sealing door (260) is used to load materials into the upper positioning cylinder (100) and the lower positioning cylinder (400).

4. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 1 is characterized in that: The lower positioning cylinder (400) is equipped with a material regulating system (300), and the material regulating system (300) comprises: An outer fixing ring (330) is detachably mounted between the upper positioning cylinder (100) and the lower positioning cylinder (400), and is located outside the lower positioning cylinder (400); A plurality of through-slots (320) are all provided on the outer fixing ring (330); the through-slots (320) are provided through the outer fixing ring (330).

5. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 4 is characterized in that: The material control system (300) further includes: The material guide cylinder (310) is connected to the second material pressing component (600) and communicates with the interior of the lower positioning cylinder (400) through the second material pressing component (600); a solenoid valve (1) is installed inside the material guide cylinder (310); The plurality of unit material adjustment controls (340) are in one-to-one correspondence with the plurality of through-slots (320); one end of the unit material adjustment control (340) is disposed on the through-slot (320), and the other end is connected to the material guide cylinder (310).

6. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 5, characterized in that: The unit material adjustment control unit (340) includes: A material regulating plate (341) is movably inserted into the insertion slot (320); a material guiding cavity is provided inside the material regulating plate (341); A plurality of dispersion holes (342) are arranged in multiple rows and columns on the material control plate (341); the dispersion holes (342) are connected to the material guide cavity and are used to guide the material inside the material guide cavity; a one-way valve is installed on the dispersion holes (342); Abutment plate (344) fixed at the end of the material regulating plate (341); The second hydraulic telescopic rod (343) has one end fixed on the abutment plate (344) and the other end fixed on the outer fixing ring (330); the second hydraulic telescopic rod (343) can adjust the degree of movement of the material regulating plate (341) in the insertion slot (320) by its own telescoping.

7. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 6 is characterized in that: The unit material control unit (340) further includes a unit material control pipe (345), and the unit material control pipe (345) includes: An external positioning hose (3451), one end of which is connected to the material regulating plate (341), and the other end of which is connected to the material guide cylinder (310); The inner elastic hose (3452) is inserted into the outer positioning hose (3451), and a gap is reserved between the inner elastic hose (3452) and the outer positioning hose (3451), and the gap is a sealed cavity; an inflation column and an air release port are installed on the gap, and the inflation column is connected to the exhaust fan; a second solenoid valve is installed on the air release port; the inner elastic hose (3452) is used to guide the material.

8. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 1, characterized in that: The upper positioning cylinder (100) comprises: A positioning cylinder (130) is detachably mounted on the lower positioning cylinder (400); A support plate (120) is arranged outside the end of the positioning cylinder (130) and is independently arranged from the positioning cylinder (130); A plurality of fixing plates (110) each have one end fixed to the positioning cylinder (130) and the other end fixed to the supporting plate (120).

9. The flexible control molding equipment and molding process of the wood-plastic composite board according to claim 8, characterized in that: An elastic band (140) is provided on the inner wall of the positioning cylinder (130) near one end of the lower positioning cylinder (400); the elastic band (140) is sealedly connected to the inner wall of the positioning cylinder (130); an inflation cavity is reserved between the elastic band (140) and the inner wall of the positioning cylinder (130); and air is inflated and deflated in the inflation cavity through a blower and a valve.

10. A flexible control molding process for wood-plastic composite panels, characterized in that: The flexible control molding equipment for wood-plastic composite panels according to any one of claims 1 to 9 is used, comprising the following steps: Step 1: After the wood fiber material, thermoplastic plastic and additive are mixed in a certain proportion, they are added into the upper positioning cylinder (100) and the lower positioning cylinder (400); Step 2: using the material pressing component 1 (200) to push the material toward the material dispersing component (500) in cycles of different pushing degrees and different time lengths inside the upper positioning cylinder (100); and using the material pressing component 2 (600) to push the material toward the material dispersing component (500) in cycles of different pushing degrees and different time lengths inside the lower positioning cylinder (400); Step 3: The material dispersing component (500) contacts the material in a comprehensive manner through the meshes with fine and dense properties of the rotating dispersing net (510) and the fixed dispersing net (530), and uniformly cuts the material and disperses the mixed material in a comprehensive manner.

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