Processing device for double-color co-extrusion plastic-wood floor by utilizing recycled plastic

Abstract

The processing device comprises a charging barrel, a mold and two hoppers, the charging barrel is provided with a first feeding port and a second feeding port, the first feeding port and the second feeding port communicate with discharging ports of the two hoppers correspondingly, a conveying rod is arranged in the charging barrel, and the conveying rod is connected with the mold. A plurality of heating boxes are arranged on the charging barrel in the material conveying direction, and each heating box is configured to independently heat the covering part of the heating box; a mixing section is arranged on the portion, between the second feeding port and the mold, of the conveying rod, the two funnels are matched with the multiple heating boxes for independent heating, staged discharging can be conducted according to different material temperature requirements, the material temperature requirements are fully met, and through the effect of the mixing section, the material can be evenly mixed. The stirring blade sets and the kneading rods are used for stirring and mixing materials on two directional layers, the materials discharged at different stages are kneaded and mixed, the mixing effect of the different materials is improved, and then the quality of formed plates is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic-wood floor forming, and particularly to a processing device for a two-color co-extruded plastic-wood floor using recycled plastics. Background Art

[0002] Plastic-wood floors are a new type of environmentally friendly material, which are processed by compounding plastics and wood fibers. Plastic-wood floors have the texture and appearance of wood, and at the same time have the wear resistance and corrosion resistance of plastics, becoming the first choice for people's green building materials; the production process of plastic-wood floors mainly includes multiple links such as raw material preparation, mixing processing, shaping, hot pressing, and cooling and solidification; the production of plastic-wood floors requires 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 quality inspection, they are processed such as granulation and grinding; then the granulated plastic particles and wood fibers are mixed in a certain proportion, melted and sent into a mold for extrusion molding, and after the formed plate is cooled, a plastic-wood floor with the texture of wood and the wear resistance of plastics can be manufactured to meet people's needs for green building materials; Among them, during the processing and forming of two-color co-extruded plastic-wood floors, if the materials are fed through the same funnel, since plastics of different color materials are required and their melting temperatures are different, it is difficult to meet their respective temperature requirements. If the materials are fed through two funnels, it is difficult to fully mix the two materials during the heating process, affecting the forming quality. Therefore, there is an urgent need for a processing device for a two-color co-extruded plastic-wood floor using recycled plastics to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a processing device for a two-color co-extruded plastic-wood floor using recycled plastics to solve the problems in two-color co-extrusion processing and forming in the above background art.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A processing device for a two-color co-extruded plastic-wood floor using recycled plastics, including a barrel, a mold, and two hoppers. 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 communicated with the discharge ports of the two hoppers. A conveying rod is arranged in the barrel, and the discharge port of the barrel is communicated with the mold. The conveying rod is configured to convey materials towards the mold. A plurality of heating boxes are arranged on the barrel along the material conveying direction, and each heating box is configured to independently heat the part covered by 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 all the areas covered by the 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 some of the areas covered by the heating boxes; A mixing section is arranged on the conveying rod between the second feed port and the mold, and the mixing section comprises: a plurality of stirring blades arranged along the circumferential direction constitute a stirring blade group, a plurality of stirring blade groups are arranged 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 arranged between adjacent stirring blade groups.

[0005] 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.

[0006] Preferably, each of the stirring blades is in a prismatic structure and is arranged on the rod body at an angle to the conveying direction.

[0007] Preferably, the kneading rod is provided with an anisotropic guide block at one end thereof facing the rod body, the anisotropic guide block comprising 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.

[0008] 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.

[0009] Preferably, a water removal mechanism is installed at one end of the cooling pool away from the mold, and the water removal mechanism comprises: The outer shell has a channel for the plate to pass through, and rollers are provided at least at the inlet and outlet ends of the channel; A scraper is provided in the channel between the two rollers at least above and below the plate; The liquid storage bin is arranged below the channel and is used for receiving the liquid dropped by the plate in the channel.

[0010] Preferably, both sides of the plate are provided with grooves with a U-shaped cross section, and the channel is provided with side scraping structures on both sides of the plate, and the side scraping structures are used to scrape the grooves, and the side scraping structures include: a top plate, for scraping the top of the channel; a bottom plate for scraping the bottom of the channel; 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.

[0011] Preferably, the top plate at least partially extends out of the corresponding end of the bottom plate at one end toward the channel inlet, and the corresponding end of the bottom plate is in an arc or inclined surface structure, and the arc or inclined surface structure is configured to guide the liquid at the bottom of the channel to flow toward the channel opening.

[0012] 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 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.

[0013] Preferably, the vertical plate is a retractable structure, the arc surface has an airbag built in, the connecting rod has an airway or trachea built in, the airway or trachea is connected to the airbag, the airbag is configured to squeeze the distance between the top plate and the bottom plate to increase 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. 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 anisotropic 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.

[0014] 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

[0015] 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.

[0016] In the attached picture: Figure 1 It is a structural schematic diagram of a one-view perspective of a processing device for a two-color co-extruded plastic wood floor of the present invention; Figure 2 It is a structural schematic diagram of another viewing angle of the processing device of the two-color co-extruded plastic wood floor of the present invention; Figure 3 It is a structural schematic diagram of each station of the processing device of the two-color co-extruded plastic wood floor of the present invention; Figure 4 It is a structural schematic diagram of the conveying rod of the present invention; Figure 5It is the plan view of the conveying rod of the present invention; Figure 6 It is the structural schematic diagram of the water removal mechanism of the present invention; Figure 7 It is the structural schematic diagram of the side scraping structure of the present invention; Figure 8 It is the plan view of the side scraping structure of the present invention; Reference numerals 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 part; 52, mixing section; 53, rear part; 54, stirring blade; 55, kneading rod; 56, special-shaped guiding 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, housing; 92, channel; 93, idler roller; 94, scraper; 95, liquid storage bin; 961, top plate; 962, bottom plate; 963, vertical plate; 964, arc surface structure; 965, arc surface; 966, connecting rod; 967, air pipe. Detailed implementation manners

[0017] The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention. The terms used in the embodiments of the present invention are only used to explain the specific embodiments of the present invention, rather than intended to limit the present invention. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Embodiment 1, referring to Figures 1 - 3 As shown, a processing device for a two-color co-extruded plastic wood floor using recycled plastics includes a workbench 1. A blanking station, a heating station, a mold 7 forming station, and a cooling station are arranged on the workbench 1. Two hoppers 3 are arranged at the blanking station, and different materials are stored in the two hoppers 3 respectively. Below the hoppers 3 is the heating station for heating and conveying the materials output from the hoppers 3, including a barrel 4. A conveying rod 5 is arranged in the barrel 4, and the conveying rod 5 is used to convey the materials in a specified direction. A plurality of heating boxes 6 are arranged on the barrel 4 along the material conveying direction. Each heating box 6 is configured to independently heat the part covered by the heating box 6, and each heating box 6 can be controlled for heating according to requirements, so as to realize zonal heating on the barrel 4; at the discharge port of the barrel 4 is the mold 7 forming station, where a mold 7 is arranged. The conveying rod 5 is configured to convey the materials towards the mold 7. The heated materials are conveyed into the mold 7 and are formed into plates 2 through the discharge port of the mold 7 and continuously output. At the discharge port of the mold 7 is the cooling station for cooling the formed plates 2.

[0019] In this embodiment, a first feed inlet 41 and a second feed inlet 42 are provided on the barrel 4. The first feed inlet 41 and the second feed inlet 42 are respectively communicated with the discharge ports of two hoppers 3. Among them, the first feed inlet 41 is located at the end of the barrel 4, and the material entering through the first feed inlet 41 passes through all the areas covered by the heating boxes 6. The second feed inlet 42 is located in the middle of the barrel 4, and the material entering through the second feed inlet 42 passes through part of the areas covered by the heating boxes 6. A mixing section 52 is provided on the part of the conveying rod 5 between the second feed inlet 42 and the mold 7. The mixing section 52 includes a number of stirring blades 54 arranged circumferentially to form a group of stirring blades 54. A number of groups of stirring blades 54 are arranged 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 arranged between adjacent groups of stirring blades 54.

[0020] Reference Figures 4 - 5 As shown, the structure of the conveying rod 5 is shown. The conveying rod 5 includes a front part 51, a middle part and a rear part 53. Both the front part 51 and the rear part 53 are screw conveyor structures. The middle part is a mixing section 52. The front part 51 is located to cover the first feed inlet 41 and the second feed inlet 42, and is used to convey the materials entering at the first feed inlet 41 and the second feed inlet 42 in the conveying direction. After a variety of materials are conveyed by the front part 51, they reach the middle part and are stirred and mixed through the mixing end to improve the mixing effect among a variety of materials.

[0021] In some embodiments, each stirring blade 54 has a rhombus structure and is inclined on the rod body in the conveying direction. It can cut the mixed materials during conveying, disperse them and then fuse them, and guide the materials to move in the conveying direction, improving the mixing and conveying efficiency.

[0022] Embodiment 2: On the basis of Embodiment 1, reference Figures 4 - 5 As shown, in this embodiment, a special-shaped guide block 56 is installed at one end of the kneading rod 55 facing 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 in the conveying direction, and: The first end face 561 is perpendicular to the axial direction of the rod body; The second end face 562 is parallel to the axial direction of the rod body; The first end face 561 and the second end face 562 are smoothly connected by an arc section 563, and the arc section 563 is used to guide the materials on the first end face 561 to move towards the second end face 562; Multiple materials are first stirred and mixed by each stirring blade 54. During the material conveying process, the advancing material will contact the first end face 561, and the material is cut and stratified by using the first end face 561. Then, the stratified material is turned by 90° under the action of the arc section 563 and is output from the second end face 562 and vertically enters the material in the conveying direction, so as to realize the turning and kneading of the material during the conveying process, further improve the mixing effect, and make the materials fully mixed and uniform with each other.

[0023] Example 3. On the basis of Example 1 or Example 2, in this example, with reference to Figures 1 - 2 As shown, at the discharge port of the mold 7, that is, at the cooling station, a cooling mechanism is provided. The cooling mechanism includes a cooling rack 81 and a cooling pool 82. The plate 2 output from the discharge port of the mold 7 is at least partially immersed in the cooling pool 82 for conveying; a plurality of spray heads 811 are provided on the cooling rack 81, and the spray heads 811 are configured to spray liquid towards the plate 2 at a preset angle reverse to the conveying direction of the plate 2. In this example, the plate 2 formed at the discharge port of the mold 7 first enters the cooling pool 82, and is cooled by the liquid in the cooling pool 82. In cooperation with the spray heads 811 on the cooling rack 81, the entire formed plate 2 is cooled and discharged. Among them, the position of the spray head can be specifically set according to the structure of the plate 2, and can cool the local area specifically, improving the flexibility of the cooling operation.

[0024] Example 4. On the basis of Example 3, in this example, the liquid in the cooling pool 82 does not completely immerse the plate 2. With reference to Figures 1 - 2 and Figure 6 As shown, a water removing mechanism is installed at one end of the cooling pool 82 away from the mold 7. The water removing mechanism includes: A housing 91, internally provided with a passage 92 for the plate 2 to pass through, and at least idler rollers 93 are provided at the inlet end and the outlet end of the passage 92; In the passage 92, at least scraping plates 94 are provided above and below the plate 2 between the two idler rollers 93; A liquid storage bin 95, provided below the passage 92, for receiving the liquid that the plate 2 drops in the passage 92.

[0025] The cooled sheet 2 enters the channel 92 and is continuously conveyed in the conveying direction under the support of the idler roller 93. During the conveying process, the water on the upper surface of the sheet 2 can be removed by the upper scraper 94, which is blocked on one side of the inlet of the housing 91. As it accumulates continuously, the liquid on the upper surface of the sheet 2 will break away from both sides of the sheet 2 and enter the cooling pool 82. The idler roller 93 below can first remove the residual liquid below the sheet 2 to a certain extent, and then through the action of the lower scraper 94 for secondary scraping, so that it falls into the lower liquid storage bin 95, thereby removing the residual liquid on the sheet 2 to a greater extent, enabling the sheet 2 to be better dried and discharged during the subsequent drying process, saving drying time and improving the forming processing efficiency.

[0026] Most of the existing plastic-wood floors are provided with U-shaped channels 21 on both sides for easy assembly. However, during the forming 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 sheet 2 in the channel 92. The side scraping structures are used to scrape the channels 21, and the side scraping structures include: The top plate 961 is used to scrape the top of the channel 21; The bottom plate 962 is used to scrape the bottom of the channel 21; The vertical plate 963 is used to scrape the vertical surface of the channel 21 and is connected to the top plate 961 and the bottom, and the vertical plate 963 is connected to the inner wall of the channel 92 through the connecting rod 966.

[0027] 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 and avoiding liquid accumulation, which affects the drying quality of the finished product.

[0028] Reference Figures 7 - 8 As shown, in this embodiment, at least part of the top plate 961 extends beyond the corresponding end of the bottom plate 962 at the end towards the inlet of the channel 92. The corresponding end of the bottom plate 962 is in an arc surface or 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 channel 21 to flow towards the opening of the channel 21; during the conveying of the sheet 2, the top plate 961 first removes the water at the top in the channel 21, then the liquid falls to the bottom of the channel 21, and then the vertical plate 963 also removes the water, and the liquid also falls to the bottom of the channel 21. During the process of the bottom plate 962 removing the water, the liquid at the bottom of the channel 21 and the falling liquid can be scraped together, and in cooperation with the conveying operation, the liquid flows along the arc surface or inclined surface structure towards the opening of the channel 21, thereby flowing into the liquid storage bin 95; Further, referring to Figures 7 - 8As shown, the corresponding end of the top plate 961 facing the inlet end of the channel 92 and the corresponding end of the bottom plate 962, as well as the inlet end of the vertical plate 963 facing the channel 92, are smoothly connected through an arc surface 965. The arc surface 965 is configured to guide the liquid at the top plate 961 and the vertical plate 963 to flow towards the bottom plate 962. During the above scraping process, the liquid scraped off from the top plate 961 and the vertical plate 963 will flow smoothly along the arc surface 965 to the bottom plate 962, and is removed to the liquid storage bin 95 through the bottom plate 962, avoiding the influence of liquid splashing on the water removal effect.

[0029] Embodiment 5. On the basis of Embodiment 4, in this embodiment, the vertical plate 963 is a telescopic structure. An airbag is built into the arc surface 965 (inside the arc surface 965, not marked in the figure). An air passage or a trachea 967 is built into the connecting rod 966. Taking the trachea 967 as an example, the trachea 967 is connected to the airbag. The airbag is configured to expand and squeeze the distance between the top plate 961 and the bottom plate 962 to become larger, and the vertical plate 963 extends. When it contracts, it controls the distance between the top plate 961 and the bottom plate 962 to become smaller, and the vertical plate 963 retracts.

[0030] Connected to the trachea 967 through an external air pump and other structures. During the water removal operation, air is inflated into the airbag through the air passage or the trachea 967. The airbag expands. The arc surface 965 is an elastic structure. Through the expansion of the internal airbag, it can drive its elastic deformation, thereby driving the top plate 961 to move upward (generally, the position of the bottom plate 962 is fixed and used to fit the bottom in the channel 21). According to the height of the channel 21, control the displacement of the top plate 961 to the corresponding height and fit it to the top in the channel 21. The vertical plate 963 adopts a telescopic structure inside and an elastic sleeve outside, which can make up for the gap brought by the telescopic structure, so that the vertical plate 963 always contacts the vertical surface of the channel 21 during the telescopic process. In this embodiment, the airbag is used for adjustment, so that it can be applicable to channels 21 of different heights, improving the applicable range. At the same time, it can also make the top plate 961 and the bottom plate 962 fit more tightly to the top and bottom of the channel 21, improving the scraping quality.

[0031] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. For those of ordinary skill in the art in this technical field, after learning the content recorded in the present invention, without departing from the principle of the present invention, several equivalent transformations and substitutions can still be made, and these equivalent transformations and substitutions should also be regarded as belonging to the protection scope of the present invention.

Claims

1. A processing device for a two-color co-extrusion plastic wood floor using recycled plastics, characterized in that, It includes a barrel, a mold and two hoppers. A first feed inlet and a second feed inlet are provided on the barrel. The first feed inlet and the second feed inlet are respectively communicated with the discharge openings of the two hoppers. A conveying rod is arranged in the barrel. The discharge opening of the barrel is communicated with the mold. The conveying rod is configured to convey materials towards the mold. A plurality of heating boxes are arranged on the barrel along the material conveying direction. Each heating box is configured to independently heat the covered part of the heating box; and The first feed inlet is located at the end of the barrel, and the materials entering through the first feed inlet pass through all the areas covered by the heating boxes; The second feed inlet is located in the middle of the barrel, and the materials entering through the second feed inlet pass through some of the areas covered by the heating boxes; A mixing section is arranged on the part of the conveying rod between the second feed inlet and the mold. The mixing section includes: a plurality of stirring blades arranged circumferentially to form a stirring blade group. A plurality of stirring blade groups are arranged on the rod body of the conveying rod along the axial direction. Kneading rods perpendicular to the axial direction of the conveying rod are arranged between adjacent stirring blade groups.

2. The processing device of a two-color co-extrusion plastic wood floor using recycled plastics according to claim 1, characterized in that: A screw conveyor structure is arranged in each hopper, and the screw conveyor structure is configured to convey materials towards the discharge opening.

3. The processing device for a two-color co-extrusion plastic wood floor using recycled plastics according to claim 1, wherein: Each of the stirring blades has a rhombus structure and is inclined on the rod body along the conveying direction.

4. The processing device of a two-color co-extrusion plastic wood floor using recycled plastics according to claim 1 or 3, characterized in that: A special-shaped guide block is installed at one end of the kneading rod facing the rod body. The special-shaped guide block includes a first end face and a second end face arranged front and back along the conveying direction, and: The first end face is perpendicular to the axial direction of the rod body; The second end face is parallel to the axial direction of the rod body; The first end face and the second end face are smoothly connected by an arc section, and the arc section is used to guide the materials on the first end face towards the second end face.

5. The processing device for a two-color co-extrusion plastic wood floor using recycled plastics according to claim 1, characterized in that: A cooling mechanism is arranged at the discharge opening of the mold. The cooling mechanism includes a cooling rack and a cooling pool. The plate output from the discharge opening of the mold is at least partially immersed in the cooling pool for conveying; a plurality of spray heads are arranged on the cooling rack, and the spray heads are configured to spray liquid towards the plate at a preset angle in the direction opposite to the plate conveying direction.

6. The processing device of a two-color co-extrusion plastic wood floor using recycled plastics according to claim 5, wherein: A water removing mechanism is installed at one end of the cooling pool far from the mold. The water removing mechanism includes: A housing with a channel for the plate to pass through, and at least idler rollers are arranged at the inlet end and the outlet end of the channel; At least scraping plates are arranged above and below the plate between the two idler rollers in the channel; A liquid storage bin is arranged below the channel for receiving the liquid falling from the plate in the channel.

7. The processing device of a two-color co-extruded plastic wood floor using recycled plastics according to claim 6, characterized in that: U-shaped channels are arranged on both sides of the plate. Side scraping structures are arranged on both sides of the channel for the plate. The side scraping structures are used to scrape the channels. The side scraping structures include: A top plate for scraping the top of the channel; A bottom plate for scraping the bottom of the channel; A vertical plate 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.

8. The processing device of a two-color co-extruded plastic wood floor using recycled plastics according to claim 7, characterized in that: At least part of the top plate extends out of the corresponding end of the bottom plate at one end facing the inlet of the channel. The corresponding end of the bottom plate is in an arc surface or inclined surface structure, and the arc surface or inclined surface structure is configured to guide the liquid at the bottom of the channel towards the opening of the channel.

9. The processing device of a two-color co-extrusion plastic wood floor using recycled plastics according to claim 7 or 8, characterized in that: One end of the top plate facing the channel inlet and the corresponding end of the bottom plate, as well as one 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 towards the bottom plate.

10. The processing device of a two-color co-extrusion plastic wood floor using recycled plastics according to claim 9, wherein: The vertical plate is a telescopic structure. An airbag is built into the arc surface, and an air duct or a trachea is built into the connecting rod. The air duct or the trachea is connected to the airbag. The airbag is configured to expand and squeeze the distance between the top plate and the bottom plate to become larger, and the vertical plate extends. When it contracts, it controls the distance between the top plate and the bottom plate to become smaller, and the vertical plate retracts.

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