A processing device for two-color co-extruded wood flooring using recycled plastic

Abstract

The present invention discloses a processing device for double-color co-extruded plastic wood flooring using recycled plastic, comprising a barrel, a mold and two hoppers, wherein a first feed port and a second feed port are provided on the barrel, and the first feed port and the second feed port are respectively connected with discharge ports of the two hoppers, a conveying rod is provided in the barrel, and a plurality of heating boxes are provided on the barrel along the material conveying direction, and each heating box is configured to independently heat a covering part of the heating box; a mixing section is provided on the portion of the conveying rod between the second feed port and the mold, and independent heating is performed through two funnels and the plurality of heating boxes, and the material can be discharged in stages according to different material temperature requirements, fully meeting the material temperature requirements, and through the action of the mixing section, the stirring blade group and the kneading rod are used to stir and mix the material in two directions, and the materials discharged in different stages are kneaded and mixed, thereby improving the mixing effect between different materials, thereby improving the quality of the formed board.

Description

Technical Field

[0001] The invention relates to the technical field of plastic wood floor molding, in particular to a processing device for a two-color co-extruded plastic wood floor using recycled plastic. Background Art

[0002] Plastic wood flooring is a new type of environmentally friendly material, which is made of a composite process of plastic and wood fiber. Plastic wood flooring has the texture and appearance of wood, and also has the wear resistance and corrosion resistance of plastic, making it people's first choice for green and environmentally friendly building materials; the production process of plastic wood flooring mainly includes raw material preparation, mixing processing, shaping, hot pressing, cooling and curing, etc.; the production of plastic wood flooring requires the use of plastic particles and wood fibers, and can be made of recycled plastic particles and wood fibers, which is an ideal choice for environmentally friendly materials; after these raw materials pass the quality inspection, they are granulated, ground and other processes; then the granulated plastic particles and wood fibers are mixed in a certain proportion, hot-melted and sent into the mold for extrusion molding, and after the molded board is cooled, plastic wood flooring with the texture of wood and the wear resistance of plastic can be produced, meeting people's demand for green and environmentally friendly building materials;

[0003] Among them, during the processing and molding of two-color co-extruded plastic wood flooring, if the materials are fed through the same funnel, it is difficult to meet the respective temperature requirements because plastics of different colors and materials have different hot melting temperatures. If the materials are fed through two funnels, it is difficult to fully mix the two materials during the heating process, which affects the molding quality. Therefore, there is an urgent need for a processing device for two-color co-extruded plastic wood flooring using recycled plastics to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a processing device for two-color co-extruded plastic wood flooring using recycled plastics, so as to solve the problems in two-color co-extrusion processing and molding in the above-mentioned background technology.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: a processing device for two-color co-extruded wood flooring using recycled plastics, comprising a barrel, a mold, and two hoppers, wherein the barrel is provided with a first feed port and a second feed port, the first feed port and the second feed port are respectively connected to the discharge ports of the two hoppers, a conveying rod is provided in the barrel, the discharge port of the barrel is connected to the mold, the conveying rod is configured to convey material toward the mold, a plurality of heating boxes are provided on the barrel along the material conveying direction, each of the heating boxes is configured to independently heat the covered portion of the heating box; and

[0006] The first feed port is located at the end of the barrel, and the material entering through the first feed port passes through the coverage area of ​​all heating boxes;

[0007] The second feed port is located in the middle of the barrel, and the material entering through the second feed port passes through the area covered by the heating box;

[0008] A mixing section is provided on the conveying rod between the second feed port and the mold, and the mixing section includes: a plurality of stirring blades arranged along the circumferential direction forming a stirring blade group, a plurality of stirring blade groups are provided on the rod body of the conveying rod along the axial direction, and a kneading rod perpendicular to the axial direction of the conveying rod is provided between adjacent stirring blade groups.

[0009] Preferably, an auger conveying structure is provided in each of the hoppers, and the auger conveying structure is configured to convey materials toward a lower material outlet.

[0010] Preferably, each of the stirring blades is in a prismatic structure and is arranged on the rod body at an angle along the conveying direction.

[0011] Preferably, the kneading rod is provided with a special-shaped guide block at one end thereof facing the rod body, the special-shaped guide block comprising a first end face and a second end face arranged front and rear along the conveying direction, and:

[0012] The first end surface is perpendicular to the axis direction of the rod body;

[0013] The second end surface is parallel to the axis direction of the rod body;

[0014] The first end surface and the second end surface are smoothly connected via an arc segment, and the arc segment is used to guide the material on the first end surface to move toward the second end surface.

[0015] Preferably, a cooling mechanism is provided at the mold outlet, and the cooling mechanism includes a cooling rack and a cooling pool. The plate output from the mold outlet is at least partially immersed in the cooling pool for transportation; a plurality of nozzles are provided on the cooling rack, and the nozzles are configured to spray liquid toward the plate at a preset angle in the opposite direction of the plate conveying direction.

[0016] Preferably, a water removal mechanism is installed at one end of the cooling pool away from the mold, and the water removal mechanism includes:

[0017] The outer shell has a passage for the plate to pass through, and rollers are provided at least at the inlet and outlet ends of the passage;

[0018] A scraper is provided in the channel between the two rollers at least above and below the plate;

[0019] The liquid storage tank is arranged below the channel and is used to receive the liquid dropped by the plate in the channel.

[0020] Preferably, both sides of the plate are provided with a groove with a U-shaped cross section, and the channel is provided with a side scraping structure on both sides of the plate, and the side scraping structure is used to scrape the groove, and the side scraping structure includes:

[0021] a top plate for scraping the top of the channel;

[0022] a bottom plate for scraping the bottom of the channel;

[0023] The vertical plate is used for scraping the vertical surface of the channel and connecting the top plate and the bottom plate, and the vertical plate is connected to the inner wall of the channel through a connecting rod.

[0024] Preferably, the top plate at least partially extends out of the corresponding end of the bottom plate toward the channel inlet, and the corresponding end of the bottom plate is formed into an arc or inclined surface structure, which is configured to guide the liquid at the bottom of the channel to flow toward the channel opening.

[0025] Preferably, the end of the top plate facing the channel inlet and the corresponding end of the bottom plate, as well as the end of the vertical plate facing the channel inlet are smoothly connected by an arc surface, and the arc surface is configured to guide the liquid at the top plate and the vertical plate to flow toward the bottom plate.

[0026] Preferably, the vertical plate is a retractable structure, the arc surface has an air bag built in, the connecting rod has an airway or trachea built in, the airway or trachea is connected to the air bag, the air bag is configured to squeeze the distance between the top plate and the bottom plate to increase when it is expanded, and the vertical plate is extended, and to control the distance between the top plate and the bottom plate to decrease when it is contracted, and the vertical plate retracts.

[0027] Beneficial effects: The present invention is provided with two funnels and cooperates with multiple heating boxes for independent heating. It can discharge materials in stages from different feed ports according to different material temperature requirements, fully meeting the material temperature requirements, and through the action of the mixing section, the stirring blade group and the kneading rod are used to stir and mix the materials in two directions, and the materials discharged in different stages are fully kneaded and mixed; wherein, through the setting of the special-shaped guide block, the material can be cut and separated through the first end face during the mixing process, and then guided and flipped by the arc section and output through the second end face, further improving the mixing effect between different materials.

[0028] In addition, the present invention can remove water from the formed plate through the action of the water removal mechanism, remove the residual water on the surface of the plate to the greatest extent, and can fully remove the residual water in the side plate groove of the plate through the action of the side scraping structure, thereby improving the efficiency of the subsequent drying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0030] In the attached figure:

[0031] Figure 1This is a schematic structural diagram of a processing device for a two-color co-extruded wood floor according to the present invention from one perspective;

[0032] Figure 2 This is a structural schematic diagram from another perspective of the processing device of the two-color co-extruded wood flooring of the present invention;

[0033] Figure 3 This is a schematic structural diagram of each workstation of a processing device for a two-color co-extruded plastic wood flooring according to the present invention;

[0034] Figure 4 It is a structural schematic diagram of the conveying rod of the present invention;

[0035] Figure 5 It is a plan view of the delivery rod of the present invention;

[0036] Figure 6 It is a structural schematic diagram of the water removal mechanism of the present invention;

[0037] Figure 7 It is a structural schematic diagram of the side scraping structure of the present invention;

[0038] Figure 8 is a plan view of the side scraping structure of the present invention;

[0039] Numbers in the figure: 1. workbench; 2. plate; 21. channel; 3. hopper; 4. barrel; 41. first feed port; 42. second feed port; 5. conveying rod; 51. front; 52. mixing section; 53. rear; 54. stirring blade; 55. kneading rod; 56. special-shaped guide block; 561. first end face; 562. second end face; 563. arc section; 6. heating box; 7. mold; 81. cooling rack; 811. nozzle; 82. cooling pool; 91. shell; 92. channel; 93. roller; 94. scraper; 95. liquid storage tank; 961. top plate; 962. bottom plate; 963. vertical plate; 964. arc surface structure; 965. arc surface; 966. connecting rod; 967. air pipe. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention in conjunction with the accompanying drawings. The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention and are not intended to limit the present invention. The following describes the embodiments of the present application in conjunction with the accompanying drawings.

[0041] Example 1, reference Figure 1-Figure 3As shown, a processing device for two-color co-extruded wood flooring using recycled plastics includes a workbench 1, on which a material unloading station, a heating station, a mold 7 forming station, and a cooling station are provided. Two hoppers 3 are provided at the unloading station, and different materials are stored in the two hoppers 3 respectively. Below the hopper 3 is a heating station for heating and conveying the material output from the hopper 3, including a barrel 4, in which a conveying rod 5 is provided. The conveying rod 5 is used to convey the material in a specified direction. The barrel 4 is provided with a conveying rod 5 for conveying the material in a specified direction. A plurality of heating boxes 6 are provided, and each heating box 6 is configured to independently heat the covered portion of the heating box 6. The heating of each heating box 6 can be controlled according to demand, thereby realizing zoned heating on the barrel 4; the discharge port of the barrel 4 is a mold 7 forming station, which is provided with a mold 7, and the conveying rod 5 is configured to convey material toward the mold 7. The heated material is conveyed only into the mold 7 and is formed into a plate 2 through the discharge port of the mold 7 for continuous output. At the discharge port of the mold 7 is a cooling station for cooling the formed plate 2.

[0042] In this embodiment, a first feed port 41 and a second feed port 42 are provided on the barrel 4, and the first feed port 41 and the second feed port 42 are respectively connected to the discharge ports of the two hoppers 3; wherein, the first feed port 41 is located at the end of the barrel 4, and the material entering through the first feed port 41 passes through all the coverage areas of the heating box 6; the second feed port 42 is located in the middle of the barrel 4, and the material entering through the second feed port 42 passes through part of the coverage area of ​​the heating box 6; a mixing section 52 is provided on the part of the conveying rod 5 between the second feed port 42 and the mold 7, and the mixing section 52 includes a plurality of stirring blades 54 arranged along the circumferential direction to constitute a stirring blade 54 group, and a plurality of stirring blade 54 groups are provided on the rod body of the conveying rod 5 along the axial direction, and a kneading rod 55 perpendicular to the axial direction of the conveying rod 5 is provided between adjacent stirring blade 54 groups.

[0043] refer to Figure 4-Figure 5 The figure shows the structure of the conveying rod 5, which includes a front portion 51, a middle portion and a rear portion 53. The front portion 51 and the rear portion 53 are both auger conveying structures, and the middle portion is a mixing section 52. The front portion 51 is located overlying the first feed port 41 and the second feed port 42, and is used to convey the materials entering the first feed port 41 and the second feed port 42 in the conveying direction. After being conveyed through the front portion 51, the various materials reach the middle portion and are stirred and mixed at the mixing end, thereby improving the mixing effect among the various materials.

[0044] In some embodiments, each stirring blade 54 is a prismatic structure and is tilted on the rod body along the conveying direction. It can cut the mixed material being conveyed, disperse it and then fuse it, and guide the material to move in the conveying direction, thereby improving the mixing and conveying efficiency.

[0045] Example 2: Based on Example 1, Figure 4-Figure 5 As shown, in this embodiment, a special-shaped guide block 56 is installed at one end of the kneading rod 55 toward the rod body. The special-shaped guide block 56 includes a first end face 561 and a second end face 562 arranged front and back along the conveying direction, and:

[0046] The first end surface 561 is perpendicular to the axis of the rod body;

[0047] The second end surface 562 is parallel to the axis of the rod body;

[0048] The first end surface 561 and the second end surface 562 are smoothly connected by an arc segment 563 , and the arc segment 563 is used to guide the material on the first end surface 561 to move toward the second end surface 562 ;

[0049] A variety of materials are first stirred and mixed by the stirring blades 54, and during the material conveying process, the advancing materials will contact the first end surface 561, and the first end surface 561 will be used to cut and layer the materials. Then, the layered materials are flipped 90° under the action of the arc segment 563, output from the second end surface 562 and vertically enter the material in the conveying direction, thereby realizing the flipping and kneading of the materials during the conveying process, further improving the mixing effect, and making the materials fully and evenly mixed.

[0050] Example 3, based on Example 1 or Example 2, in this example, reference Figure 1-Figure 2 As shown, a cooling mechanism is provided at the discharge port of the mold 7, i.e., at the cooling station. The cooling mechanism includes a cooling rack 81 and a cooling pool 82. The plate 2 discharged from the discharge port of the mold 7 is at least partially immersed in the cooling pool 82 for transportation. A plurality of nozzles 811 are provided on the cooling rack 81, and the nozzles 811 are configured to spray liquid toward the plate 2 at a preset angle in the opposite direction of the conveying direction of the plate 2.

[0051] In this embodiment, the plate 2 formed from the discharge port of the mold 7 first enters the cooling pool 82, is cooled by the liquid in the cooling pool 82, and cooperates with the nozzle 811 on the cooling rack 81 to cool the entire formed plate 2 and discharge it. Among them, the collision position can be specifically set according to the structure of the plate 2, and can be used for targeted local cooling, thereby improving the flexibility of the cooling operation.

[0052] Example 4, based on Example 3, in this example, the liquid in the cooling pool 82 does not completely immerse the plate 2, refer to Figure 1-Figure 2 and Figure 6 As shown, a water removal mechanism is installed at the end of the cooling pool 82 away from the mold 7, and the water removal mechanism includes:

[0053] The housing 91 has a channel 92 therein for the plate 2 to pass through, and rollers 93 are provided at least at the inlet and outlet ends of the channel 92;

[0054] A scraper 94 is provided in the channel 92 between the two rollers 93 at least above and below the plate 2;

[0055] The liquid storage tank 95 is arranged below the channel 92 and is used to receive the liquid dropped by the plate 2 in the channel 92 .

[0056] The cooled plate 2 enters the channel 92 and is continuously conveyed in the conveying direction under the support of the rollers 93. During the conveying process, the upper scraper 94 can remove the moisture on the upper surface of the plate 2, so that it is blocked on the inlet side of the shell 91. As it continues to accumulate, the liquid on the upper surface of the plate 2 will separate from both sides of the plate 2 and enter the cooling pool 82. The lower rollers 93 can first remove the residual liquid under the plate 2 to a certain extent, and then the scraper 94 is lowered to perform a second scraping, so that it falls into the liquid storage bin 95 below, thereby removing the residual liquid on the plate 2 to a large extent, so that the plate 2 can be better dried and discharged in the subsequent drying process, saving drying time and improving the forming processing efficiency.

[0057] Most existing plastic wood floors are provided with U-shaped channels 21 on both sides to facilitate assembly. However, during the molding and drying process, the drying effect in the channels 21 is not ideal. In this embodiment, side scraping structures are provided on both sides of the channel 92 located on the plate 2. The side scraping structures are used to scrape the channels 21. The side scraping structures include:

[0058] Top plate 961, used for scraping the top of the channel 21;

[0059] Bottom plate 962, used for scraping the bottom of the channel 21;

[0060] The vertical plate 963 is used to scrape the vertical surface of the channel 21 and connect the top plate 961 and the bottom. The vertical plate 963 is connected to the inner wall of the channel 92 through a connecting rod 966.

[0061] The scraping channel 21 composed of the top plate 961, the bottom plate 962 and the vertical plate 963 can better fit in the channel 21, thereby removing the liquid in the channel 21 to avoid liquid accumulation and affecting the drying quality of the finished product.

[0062] refer to Figure 7-Figure 8As shown, in this embodiment, the top plate 961 at least partially extends out of the corresponding end of the bottom plate 962 at one end toward the inlet of the channel 92, and the corresponding end of the bottom plate 962 is formed into an arc surface or an inclined surface structure. Taking the arc surface structure 964 as an example, the arc surface structure 964 is configured to guide the liquid at the bottom of the groove 21 to flow toward the opening of the groove 21; during the transportation of the plate 2, the top of the groove 21 is first dewatered by the top plate 961, and then the liquid falls to the bottom of the groove 21. Similarly, the vertical plate 963 then dewaters, and the liquid also falls to the bottom of the groove 21. During the dewatering process of the bottom plate 962, the liquid at the bottom of the groove 21 and the falling liquid can be scraped together, and in conjunction with the transportation operation, the liquid flows along the arc surface or inclined surface structure toward the opening of the groove 21, and thus flows into the liquid storage tank 95;

[0063] For further reference, Figure 7-Figure 8 As shown, the end of the top plate 961 facing the inlet of the channel 92 and the corresponding end of the bottom plate 962, as well as the end of the vertical plate 963 facing the inlet of the channel 92 are smoothly connected through the curved surface 965, and the curved surface 965 is configured to guide the liquid at the top plate 961 and the vertical plate 963 to flow toward the bottom plate 962; in the above-mentioned scraping process, the liquid scraped and removed from the top plate 961 and the vertical plate 963 will flow smoothly along the curved surface 965 to the bottom plate 962, and will be removed to the liquid storage tank 95 through the bottom plate 962, so as to avoid liquid splashing and other factors affecting the water removal effect.

[0064] Example 5. Based on Example 4, in this embodiment, the vertical plate 963 is a retractable structure, the arc surface 965 has a built-in airbag (located inside the arc surface 965, not marked in the figure), and the connecting rod 966 has a built-in airway or trachea 967. Taking the trachea 967 as an example, the trachea 967 is connected to the airbag, and the airbag is configured to squeeze the top plate 961 and the bottom plate 962 to increase the distance when inflated, and the vertical plate 963 is extended, and to control the distance between the top plate 961 and the bottom plate 962 to decrease when contracted, and the vertical plate 963 retracts.

[0065] The airbag 965 is connected to the air tube 967 through an external air pump or other structure. During the water removal operation, air is inflated into the airbag through the air channel or air tube 967, and the airbag expands. The arc surface 965 is an elastic structure. The internal airbag expands, which can drive its elastic deformation, thereby driving the top plate 961 to move upward (generally, the position of the bottom plate 962 is fixed, used to fit the bottom of the groove 21). According to the height of the groove 21, the top plate 961 is controlled to move to the corresponding height and fit to the top of the groove 21. The vertical plate 963 adopts a telescopic structure inside and an elastic sleeve outside to make up for the gap caused by the telescopic structure, so that the vertical plate 963 is always in contact with the vertical surface of the groove 21 during the telescopic process. In this embodiment, the airbag is used for adjustment to make it applicable to grooves 21 of different heights, thereby improving the scope of application. At the same time, the top plate 961 and the bottom plate 962 can be more closely fitted to the top and bottom of the groove 21, thereby improving the scraping quality.

[0066] The above describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. After knowing the contents described in the present invention, ordinary technicians in this technical field can make several equivalent changes and substitutions without departing from the principles of the present invention. These equivalent changes and substitutions should also be regarded as falling within the scope of protection of the present invention.

Claims

1. A processing device for two-color co-extruded wood flooring using recycled plastics, characterized in that: The invention comprises a barrel, a mold and two hoppers, wherein the barrel is provided with a first feed port and a second feed port, the first feed port and the second feed port are respectively connected to the discharge ports of the two hoppers, a conveying rod is provided in the barrel, the discharge port of the barrel is connected to the mold, the conveying rod is configured to convey material toward the mold, and a plurality of heating boxes are provided on the barrel along the material conveying direction, each of the heating boxes is configured to independently heat the covered portion of the heating box; and The first feed port is located at the end of the barrel, and the material entering through the first feed port passes through the coverage area of ​​all heating boxes; The second feed port is located in the middle of the barrel, and the material entering through the second feed port passes through the area covered by the heating box; A mixing section is provided on the conveying rod between the second feed port and the mold, the mixing section comprising: a plurality of stirring blades arranged along the circumference forming a stirring blade group; a plurality of stirring blade groups are provided on the rod body of the conveying rod along the axial direction; and kneading rods perpendicular to the axial direction of the conveying rod are provided between adjacent stirring blade groups; A cooling mechanism is provided at the mold outlet, and the cooling mechanism includes a cooling rack and a cooling pool, and the plate output from the mold outlet is at least partially immersed in the cooling pool for transportation; The cooling pool is provided with a water removal mechanism at one end away from the mold, and the water removal mechanism comprises: The outer shell has a passage for the plate to pass through, and rollers are provided at least at the inlet and outlet ends of the passage; A scraper is provided in the channel between the two rollers at least above and below the plate; A liquid storage tank is provided below the channel and is used to receive the liquid dropped by the plate in the channel; Both sides of the plate are provided with a U-shaped cross-section groove, and the channel is provided with a side scraping structure on both sides of the plate, and the side scraping structure is used to scrape the groove, and the side scraping structure includes: a top plate for scraping the top of the channel; a bottom plate for scraping the bottom of the channel; A vertical plate, used for scraping the vertical surface of the channel and connecting the top plate and the bottom plate, and the vertical plate is connected to the inner wall of the channel through a connecting rod; The top plate at least partially extends out of the corresponding end of the bottom plate toward the channel inlet, and the corresponding end of the bottom plate is formed into a curved surface or a slope structure, which is configured to guide the liquid at the bottom of the channel to flow toward the channel opening.

2. The processing device for a two-color co-extruded wood floor using recycled plastic according to claim 1, characterized in that: An auger conveying structure is provided in each of the hoppers, and the auger conveying structure is configured to convey materials toward a lower material outlet.

3. The processing device for a two-color co-extruded wood floor using recycled plastic according to claim 1, characterized in that: Each stirring blade is in a prismatic structure and is arranged on the rod body obliquely along the conveying direction.

4. The processing device for a two-color co-extruded wood floor using recycled plastic according to claim 1 or 3, characterized in that: The kneading rod is provided with a special-shaped guide block at one end thereof facing the rod body, wherein the special-shaped guide block comprises a first end face and a second end face arranged front and rear along the conveying direction, and: The first end surface is perpendicular to the axis direction of the rod body; The second end surface is parallel to the axis direction of the rod body; The first end surface and the second end surface are smoothly connected via an arc segment, and the arc segment is used to guide the material on the first end surface to move toward the second end surface.

5. The processing device for a two-color co-extruded wood floor using recycled plastic according to claim 1, characterized in that: A plurality of nozzles are provided on the cooling rack, and the nozzles are configured to spray liquid toward the plate at a preset angle in the opposite direction of the plate conveying direction.

6. The processing device for a two-color co-extruded wood floor using recycled plastic according to claim 1, characterized in that: The end of the top plate facing the channel inlet and the corresponding end of the bottom plate, as well as the end of the vertical plate facing the channel inlet are smoothly connected through an arc surface, and the arc surface is configured to guide the liquid at the top plate and the vertical plate to flow toward the bottom plate.

7. The processing device for a two-color co-extruded wood floor using recycled plastic according to claim 6, characterized in that: The vertical plate is a retractable structure, the curved surface has a built-in airbag, the connecting rod has a built-in airway or trachea, the airway or trachea is connected to the airbag, the airbag is configured to squeeze the top plate and the bottom plate to increase the distance between them when inflated, and the vertical plate to extend, and to control the distance between the top plate and the bottom plate to decrease when contracted, and the vertical plate to retract.

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