Wood-plastic composite insert module and article thereof

Abstract

The present application relates to the field of modular product manufacturing, in particular to a wood-plastic composite material plug-in module and product thereof, comprising a load-bearing block, a first extension block, a second extension block and an intermediate splicing block, the load-bearing block has a horizontal plane for placing on a load-bearing surface, the load-bearing block and the first extension block are provided with a concave slot, the intermediate splicing block and the second extension block are provided with a protruding part matched with the concave slot, a first hollow triangle is formed between each load-bearing block and the adjacent two load-bearing blocks, and a second hollow square is formed between the two load-bearing blocks and the two intermediate splicing blocks. The present application can reduce the stress concentration of the wood-plastic composite material parts at the matching plug-in part, reduce the possibility of the matching plug-in part being broken due to excessive load, make the product have better stability, and be conducive to ensuring product quality and improving the production efficiency of the composite material parts.

Description

Technical Field

[0001] This invention relates to the field of modular product manufacturing technology, specifically to a wood-plastic composite plug-in module and its products. Background Technology

[0002] While mortise and tenon joints can be used to extend or widen wooden components in solid wood products, certain rules must be followed during the splicing process. Only by accurately determining the fiber orientation can the mortise and tenon structure function effectively. Otherwise, it may cause the modular product components to split, making the modular product unable to meet the usage requirements.

[0003] Wood-plastic composites, as a type of green and environmentally friendly composite material, are mainly made by mixing thermoplastic polymers such as polyethylene, polypropylene, and polyvinyl chloride with a certain amount of lignified plant fiber materials such as wood, bamboo, and straw, and then molding them through extrusion, compression molding, injection molding, and other methods. Wood-plastic composites have developed rapidly both domestically and internationally in recent decades and are widely used in interior decoration, outdoor landscaping, transportation, packaging, and other fields. Indoor and outdoor flooring accounts for approximately 75% of the entire wood-plastic market share.

[0004] Wood-plastic composites are generally made by co-extrusion or compression molding of continuous fibers, which can strengthen and toughen the wood-plastic composites to a certain extent. However, due to the poor interfacial compatibility between the fibers and the wood-plastic matrix, the use of adhesives results in extremely poor performance stability of the material under long-term repeated tension, compression and shear stress, making it unsuitable for floor slabs, tensile members and shear members in buildings. Summary of the Invention

[0005] The purpose of this invention is to provide a wood-plastic composite plug-in module and its products to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The wood-plastic composite material interlocking module includes a load-bearing block, a first extension block, a second extension block, and an intermediate splicing block. The load-bearing block has a horizontal surface for placement on a bearing surface. The load-bearing block and the first extension block have recessed slots. The intermediate splicing block and the second extension block have protrusions that are adapted to be inserted into the recessed slots. Each load-bearing block and two adjacent load-bearing blocks form an approximately triangular first hollow. The two load-bearing blocks and the two intermediate splicing blocks fit together end to end, thereby forming an approximately square second hollow in the middle.

[0008] Furthermore, the load-bearing block also includes two symmetrical outwardly convex curved ribs. The bottom of the curved ribs is integrated with the horizontal plane, and the tops of the two curved ribs meet to form an arc-shaped end face. There is an arc-shaped transition surface between two adjacent protrusions on the intermediate splicing block.

[0009] Furthermore, two adjacent and close curved ribs and an arc-shaped end face form a first hollow, with the first hollow opening at its end along the axial direction.

[0010] Furthermore, the curved rib wall is provided with recessed slots, which are symmetrically distributed along both sides of the arc-shaped end face. The inner side of the curved rib wall has protruding ribs, and the positions of the protruding ribs are opposite to the positions of the recessed slots.

[0011] Furthermore, a second hollow is formed between the two opposing arc-shaped transition surfaces and the two opposing arc-shaped end faces, and the end of the second hollow is open along the axial direction.

[0012] Furthermore, the horizontal plane, the curved rib wall, and the arc-shaped end face form a first cavity for the load-bearing block; the four sides of the first extension block form a second cavity for the first extension block; the four sides of the intermediate splicing block form a third cavity for the intermediate splicing block; the four sides of the second extension block form a fourth cavity for the second extension block; and the two opposite sides of the first extension block are recessed inward to form a recessed slot.

[0013] Furthermore, the protrusion of the second extension block can be used to fit and insert into the recessed slot of the first extension block, thereby enabling straight-line extension splicing, wherein the cross-section of the recessed slot is an isosceles trapezoid.

[0014] Furthermore, the cavity cross-section of the load-bearing block is an axisymmetric figure, and the cavity cross-sections of the first extension block, the intermediate splicing block, and the second extension block are axisymmetric or centrally symmetric figures. The corners of the load-bearing block, the first extension block, the intermediate splicing block, and the second extension block are rounded or chamfered surfaces.

[0015] To achieve the above objectives, the present invention also provides the following technical solution:

[0016] Wood-plastic composite plug-in module products are obtained by splicing and assembling wood-plastic composite plug-in modules as described in any one of the above. By utilizing the cooperation of the protrusions and recesses of multiple wood-plastic composite components, and through the first and second hollowing, the positional relationship between the wood-plastic composite components is restricted to avoid radial displacement and collapse, thereby realizing modular product assembly.

[0017] Furthermore, the wood-plastic composite material component can be cut as needed along the length direction of the extrusion molding process, and multiple different wood-plastic composite material components can be interlocked and combined.

[0018] Adhesive is applied between the protrusions and recesses of the interlocking wood-plastic composite components, the first hollow gap, and the second hollow gap to fix the positional relationship between the wood-plastic composite components.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention utilizes a first, approximately triangular perforation formed between the various blocks (load-bearing block, first extension block, second extension block, and intermediate splicing block). When these blocks are spliced ​​together to form a modular product, the weight is evenly distributed to the curved ribs of adjacent load-bearing blocks. This reduces stress concentration at the mating joints of the wood-plastic composite components, minimizing the possibility of breakage due to excessive load and improving product stability. Simultaneously, the second, approximately square perforation distributes the stress on the two adjacent curved end faces to the two curved transition surfaces, preventing complete contact between the end faces and reducing the axial stress on the curved end faces of the load-bearing blocks due to gravity. This solves the problem of edge defects caused by reduced flowability of biomass fiber raw materials during extrusion molding of wood-plastic composite components, resulting in higher production efficiency and better product quality.

[0021] This invention enables straight-line laying, turning laying, and oblique laying during the splicing of modular products, as well as subsequent finishing work. By forming rounded or chamfered corners on the cross-section, it overcomes the defect of insufficient flowability of natural fiber composite materials in the extruder channel. Furthermore, the curvature at the joint reduces the stress borne by the protruding joint after bonding, reducing the occurrence of fracture. At the same time, it overcomes the defect of insufficient flowability of rounded or chamfered composite materials in the extruder channel, which helps to ensure product quality and improve the production efficiency of composite material parts. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the wood-plastic composite material plug-in module assembled into a modular product according to the present invention.

[0023] Figure 2 For the present invention Figure 1 Another perspective illustration.

[0024] Figure 3 This is a schematic diagram of the load-bearing block structure of the present invention.

[0025] Figure 4 This is a schematic diagram of the first extension block structure of the present invention.

[0026] Figure 5 This is a schematic diagram of the intermediate splicing block structure of the present invention.

[0027] Figure 6 This is a schematic diagram of the second extension block structure of the present invention.

[0028] Figure 7 For the present invention Figure 1Schematic diagram of the positioning part at point A.

[0029] Figure 8 For the present invention Figure 7 Another structural diagram.

[0030] In the diagram: 1-Bearing block, 2-First extension block, 3-Intermediate splicing block, 4-Second extension block, 5-Arc-shaped end face, 6-Recessed slot, 7-Horizontal surface, 8-Rounded corner or chamfered surface, 9-Cavity, 10-Side surface, 11-Protruding rib, 12-Protrusion, 13-First hollow, 14-Second hollow, 15-Arc-shaped transition surface, 16-Curved rib wall, 17-Storage groove, 18-Ball bearing, 19-First magnet, 20-First bead groove, 21-Second magnet, 22-Second bead groove, 23-Second cavity, 24-Third cavity, 25-Fourth cavity. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Please see Figures 1 to 6 The present invention provides a technical solution:

[0035] The wood-plastic composite material interlocking module includes a load-bearing block 1, a first extension block 2, a second extension block 4, and an intermediate splicing block 3 of the same length. The load-bearing block 1 has a horizontal surface 7 for placement on the bearing surface. The load-bearing block 1 and the first extension block 2 are provided with recessed slots 6. The intermediate splicing block 3 and the second extension block 4 are provided with protrusions 12 that are adapted to be inserted into the recessed slots 6. Each load-bearing block 1 and two adjacent load-bearing blocks 1 form an approximately triangular first hollow 13. The two load-bearing blocks 1 and the two intermediate splicing blocks 3 are matched end to end, thereby forming an approximately square second hollow 14 in the middle.

[0036] Specifically, the load-bearing block 1 also includes two symmetrical outwardly protruding curved ribs 16. The bottom of the curved ribs 16 is integrated with the horizontal plane 7, and the tops of the two curved ribs 16 meet to form an arc-shaped end face 5. There is an arc-shaped transition surface 15 between two adjacent protrusions 12 on the intermediate splicing block 3.

[0037] Specifically, two adjacent and close curved ribs 16 and an arc-shaped end face 5 form a first hollow 13, and the first hollow 13 has an opening at its end along the axial direction.

[0038] Specifically, the curved rib wall 16 has recessed slots 6, which are symmetrically distributed along both sides of the arc-shaped end face 5. The inner side of the curved rib wall 16 has protruding ribs 11, and the position of the protruding ribs 11 is opposite to the position of the recessed slots 6 (that is, the protruding ribs 11 and the recessed slots 6 are located on both sides of the curved rib wall 16 respectively).

[0039] Specifically, a second hollow 14 is formed between the two opposing arc-shaped transition surfaces 15 and the two opposing arc-shaped end faces 5, and the second hollow 14 has an end opening along the axial direction.

[0040] Specifically, the horizontal plane 7, the curved rib wall 16 and the arc-shaped end face 5 form a first cavity 9 of the load-bearing block 1, the four sides 10 of the first extension block 2 form a second cavity 23 of the first extension block 2, the four sides of the intermediate splicing block 3 form a third cavity 24 of the intermediate splicing block 3, the four sides of the second extension block 4 form a fourth cavity 25 of the second extension block 4, and the two opposite sides 10 of the first extension block 2 are recessed inward to form a recessed slot 6.

[0041] Specifically, the protrusion 12 of the second extension block 4 can be used to fit and insert into the recessed slot 6 of the first extension block 2, thereby enabling straight-line extension splicing. The cross-section of the recessed slot 6 is an isosceles trapezoid.

[0042] Specifically, the first cavity 9 of the load-bearing block 1 has an axisymmetric cross-section, and the second cavity 23, third cavity 24 and fourth cavity 25 corresponding to the first extension block 2, the intermediate splicing block 3 and the second extension block 4 have axisymmetric or centrally symmetric cross-sections. The corners of the load-bearing block 1, the first extension block 2, the intermediate splicing block 3 and the second extension block 4 are rounded or chamfered surfaces 8.

[0043] In order to facilitate the extrusion molding of wood-plastic composite materials and overcome the defect of insufficient flow of wood-plastic composite materials in the extruder channel, the corners are blunted to form rounded or chamfered surfaces 8. In addition, the four cavities: the first cavity 9, the second cavity 23, the third cavity 24 and the fourth cavity 25 can save building materials, so that the entire module or the product made from the module can be lightweight as a whole.

[0044] Wood-plastic composite plug-in module products are obtained by splicing and assembling the aforementioned wood-plastic composite plug-in modules. By utilizing the cooperation of the protrusions 12 and recessed slots 6 of multiple wood-plastic composite components, and through the first hollow 13 and the second hollow 14, the positional relationship between the wood-plastic composite components is restricted to avoid radial displacement and collapse, thereby realizing modular product assembly.

[0045] Specifically, the wood-plastic composite material component can be cut as needed along its length after extrusion molding, and multiple different wood-plastic composite material components can be interlocked and combined.

[0046] Preferably, adhesive is applied between the protrusions 12 and the recesses 6 of the interlocking wood-plastic composite components, the first hollow 13 gap, and the second hollow 14 gap (adhesive may not be applied, depending on the actual installation situation) to fix the positional relationship between the wood-plastic composite components.

[0047] This invention, by providing the protrusion 12 and the recessed slot 6, facilitates the insertion of the load-bearing block 1, the first extension block 2, the second extension block 4, and the intermediate splicing block 3. During insertion, as... Figure 2 As shown, by inserting the protrusion 12 into one end of the recessed slot 6 along the direction of arrow A until the other end, stability can be achieved when the blocks are fitted together, avoiding the protrusion 12 from being subjected to large stress and breaking due to direct use of planar joints.

[0048] This invention utilizes the first, approximately triangular, hollow space 13 formed between the various blocks (load-bearing block 1, first extension block 2, second extension block 4, and intermediate splicing block 3). When the blocks are spliced ​​together to form a modular product, the weight is evenly distributed to the curved ribs 16 of adjacent load-bearing blocks 1, reducing stress concentration at the mating and interlocking parts of the wood-plastic composite component. This reduces the possibility of breakage at the mating and interlocking parts due to excessive load, resulting in better product stability. Simultaneously, the second, approximately square, hollow space 14 distributes the stress on the two adjacent arc-shaped end faces 5 to the two arc-shaped transition surfaces 15, preventing complete contact between the end faces and reducing the stress borne by gravity in the axial direction between the arc-shaped end faces 5 of the load-bearing block 1. This solves the problem of edge and corner defects caused by the reduced fluidity of biomass fiber raw materials during the extrusion molding process of wood-plastic composite components, resulting in higher production efficiency and better product quality.

[0049] When manufacturing modular products by extrusion bonding, this invention can realize straight laying, turning laying, and oblique laying during splicing, as well as subsequent finishing work. By making the corners on the cross-section into rounded or chamfered surfaces 8, the defect of insufficient flowability of natural fiber composite materials in the extruder channel can be overcome. Moreover, the curvature at the joint can reduce the stress borne by the protruding joint after bonding, reduce the occurrence of fracture, and overcome the defect of insufficient flowability of composite materials with rounded or chamfered surfaces 8 in the extruder channel. This is beneficial to ensuring product quality and improving the production efficiency of composite material parts.

[0050] In this invention, a positioning part is provided between the recessed slot 6 and the protrusion 12. In the first case, this positioning part is used to prevent relative displacement between the recessed slot 6 and the protrusion 12, thus fixing them relative to each other. Specifically, the positioning part includes a receiving groove 17 formed on the protrusion 12 / recessed slot 6, a first magnet 19 located on the recessed slot 6 / protrusion 12, and a ball bearing 18. The receiving groove 17 and the first magnet 19 are positioned opposite each other and on the same axial direction. The ball bearing 18 is located within the receiving groove 17, and the end of the first magnet 19 has a ball groove 20 for receiving the ball bearing 18. When... Figure 2As shown, along the direction of arrow A, the protrusion 12 is inserted into the recessed slot 6 from one end (the ball 18 does not fall out of the receiving slot 17; if it does fall out, it is reinserted). When the receiving slot 17 is aligned with the first magnet 19, due to the weight of the ball 18 and the magnetic attraction of the first magnet 19 (or by striking the weight block 1, the first extension block 2, the second extension block 4, and / or the intermediate splicing block 3), the ball 18 rolls down and is attracted into the first bead groove 20, where it is held by the first magnet 19. At this point, at least half of the ball 18 falls into the first bead groove 20. Thus, not only is the protrusion 12 restricted by the recessed slot 6, preventing relative movement between the protrusion 12 and the recessed slot 6 in the radial direction, but it is also restricted by the engagement of the ball 18 and the first bead groove 20, preventing relative movement between the protrusion 12 and the recessed slot 6 in the axial direction (i.e., along the direction of arrow A and the opposite direction). Therefore, after the heavy block 1 is inserted into the middle splicing block 3, after the middle splicing block 3 is inserted into the second extension block 4, and after the first extension block 2 is inserted into the middle splicing block 3, they will be relatively fixed and cannot be displaced relative to each other. The ball bearing 18 is preferably made of a material that can be attracted by the magnet 19, such as a steel ball.

[0051] In this invention, a positioning part is provided between the recessed slot 6 and the protrusion 12. The second case is basically the same as the first case, except that: Figure 8 As shown, a second magnet 21 is added to the top of the storage groove 17. The end of the second magnet 21 has a second bead groove 22 for receiving the ball 18. Initially, the ball 18 is attracted into the second bead groove 22 to prevent the ball 18 from falling out of the storage groove 17, thereby facilitating the interlocking between the recessed slot 6 and the protrusion 12. When the storage groove 17 is aligned with the first magnet 19, the weight block 1, the first extension block 2, the second extension block 4 and / or the intermediate splicing block 3 are struck to assist. The ball 18 falls out of the second bead groove 22, rolls down along the storage groove 17 and is attracted into the first bead groove 20, where it is attracted to the first magnet 19.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wood-plastic composite material plug-in module, characterized in that, The system includes a load-bearing block (1), a first extension block (2), a second extension block (4), and an intermediate splicing block (3). The load-bearing block (1) has a horizontal surface (7) for placement on a bearing surface. The load-bearing block (1) and the first extension block (2) are provided with recessed slots (6). The intermediate splicing block (3) and the second extension block (4) are provided with protrusions (12) that are adapted to be inserted into the recessed slots (6). Each load-bearing block (1) forms an approximately triangular first hollow (13) with two adjacent load-bearing blocks (1). The two load-bearing blocks (1) and the two intermediate splicing blocks (3) are matched end to end. The two curved ribs (16) are joined together to form a second hollow (14) that is approximately square in the middle. The load-bearing block (1) also includes two symmetrical outwardly protruding curved ribs (16). The bottom of the curved ribs (16) is integrated with the horizontal plane (7). The tops of the two curved ribs (16) meet and form an arc-shaped end face (5). There is an arc-shaped transition surface (15) between two adjacent protrusions (12) on the middle splicing block (3). The two adjacent and close curved ribs (16) and an arc-shaped transition surface (15) form a first hollow (13). The first hollow (13) is open at the end along the axial direction. A second perforation (14) is formed between two opposing arc-shaped transition surfaces (15) and two opposing arc-shaped end surfaces (5), with the end opening of the second perforation (14) in the axial direction.

2. The wood-plastic composite material plug-in module as described in claim 1, characterized in that, The curved rib wall (16) is provided with a recessed slot (6), which is symmetrically distributed on both sides of the arc end face (5). The inner side of the curved rib wall (16) has a rib (11), and the position of the rib (11) is opposite to the position of the recessed slot (6).

3. The wood-plastic composite material plug-in module as described in claim 1, characterized in that, The horizontal plane (7), the curved rib wall (16) and the arc end face (5) form a first cavity (9) of the load-bearing block (1), the four sides of the first extension block (2) form a second cavity (23) of the first extension block (2), the four sides of the intermediate splicing block (3) form a third cavity (24) of the intermediate splicing block (3), the four sides of the second extension block (4) form a fourth cavity (25) of the second extension block (4), and the two opposite sides (10) of the first extension block (2) are recessed inward to form an indented slot (6).

4. The wood-plastic composite material plug-in module as described in claim 1, characterized in that, The protrusion (12) of the second extension block (4) can be used to fit into the recessed slot (6) of the first extension block (2) for linear connection extension splicing, and the cross section of the recessed slot (6) is an isosceles trapezoid.

5. The wood-plastic composite material plug-in module as described in claim 3, characterized in that, The cavity (9) of the load-bearing block (1) has an axisymmetric cross section. The cavity (9) of the first extension block (2), the intermediate splicing block (3) and the second extension block (4) have axisymmetric or centrally symmetric cross sections. The corners of the load-bearing block (1), the first extension block (2), the intermediate splicing block (3) and the second extension block (4) are rounded or chamfered (8).

6. A wood-plastic composite plug-in module product, characterized in that, The wood-plastic composite material plug-in module is assembled by splicing and combining the wood-plastic composite material plug-in modules according to any one of claims 1 to 5. By utilizing the cooperation of the protrusions (12) and concave slots (6) of multiple wood-plastic composite material components, the positional relationship between the wood-plastic composite material components is restricted through the first hollow (13) and the second hollow (14) to avoid radial displacement and collapse, thereby realizing modular product assembly.

7. The wood-plastic composite plug-in module product as described in claim 6, characterized in that, The wood-plastic composite material component can be cut as needed along the length direction of the extrusion molding process, and multiple different wood-plastic composite material components can be assembled together. Adhesive is applied between the protrusions (12) and recesses (6) of the interlocking wood-plastic composite components, the first cutout (13) gap and the second cutout (14) gap to fix the positional relationship between the wood-plastic composite components.

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