A healthy and environmentally friendly plastic and preparation method thereof

Abstract

The invention relates to an environmentally friendly plastic, more specifically to a healthy and environmentally friendly plastic and a preparation method thereof, the method comprising the following steps: step one: injecting a torn flocculent additive into between an injection molding cavity I and an injection molding cavity II through a wind cavity; step two: placing a plastic raw material into the injection molding cavity I for heating, mixing and stirring, and then passing the plastic raw material and the flocculent additive into the injection molding cavity II; step three: mixing and stirring the plastic raw material and the flocculent additive in the injection molding cavity II, and then performing injection molding; a healthy and environmentally friendly plastic, wherein the flocculent additive is mixed; a plastic can be prepared that ensures the strength of the plastic and does not generate residue splashing when the plastic is broken, thereby increasing the safe use performance of the plastic.

Description

Technical Field

[0001] The invention relates to environmentally friendly plastics, and more particularly to healthy and environmentally friendly plastics and a preparation method thereof. Background Art

[0002] Environmentally friendly plastic pipes mainly include: rigid polyvinyl chloride pipes, cross-linked polyethylene pipes, chlorinated polyvinyl chloride pipes, aluminum-plastic composite pipes, steel-plastic composite pipes, random copolymer polypropylene pipes and polybutylene pipes and other types; there are many technologies for preparing environmentally friendly plastics in the prior art, such as patent No. CN112280178A, entitled a healthy and environmentally friendly plastic and a preparation method thereof, but the disadvantage of this patent is that it is impossible to prepare a plastic that can ensure the strength of the plastic while not generating residue splashing when the plastic is broken, thereby increasing the safe use performance of the plastic. Summary of the invention

[0003] The purpose of the present invention is to provide a healthy and environmentally friendly plastic and a preparation method thereof, which can ensure the strength of the plastic and prevent residue splashing when the plastic is broken, thereby increasing the safe use performance of the plastic.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A method for preparing healthy and environmentally friendly plastics, the method comprising the following steps:

[0006] Step 1: Inject the torn flocculent additive into the space between the injection molding cavity I and the injection molding cavity II through the wind cavity;

[0007] Step 2: Put the plastic raw materials into the injection molding cavity I, heat, mix and stir, and then pass them into the injection molding cavity II;

[0008] Step 3: Injection molding cavity II mixes and stirs the plastic raw materials and flocculent additives, and then performs injection molding;

[0009] A healthy and environment-friendly plastic, wherein flocculent additives are mixed.

[0010] A healthy and environmentally friendly plastic preparation device comprises an injection molding cavity I, a material feeding pipe is fixedly connected to the injection molding cavity I, a converging cavity is arranged at the lower end of the injection molding cavity I, and the lower end of the converging cavity is opened;

[0011] The side of the injection molding cavity I is fixedly connected with the wind cavity, the lower end of the injection molding cavity I is fixedly connected with the injection molding cavity II, the upper end of the injection molding cavity II is provided with an expansion cavity, the upper end of the expansion cavity is open, and the convergence cavity is located on the upper side of the expansion cavity;

[0012] Both sides of the wind cavity are opened, one end of the wind cavity is connected to the air pump, and the other end of the wind cavity is located between the convergence cavity and the expansion cavity;

[0013] The lower end of the wind cavity is fixedly connected to the tearing cavity, a fluffing groove is provided on the tearing cavity, a first telescopic mechanism is fixedly connected to the tearing cavity, a closing plate is fixedly connected to the telescopic end of the first telescopic mechanism, the lower end of the injection cavity II is open, the closing plate is slidably connected to the lower end of the injection cavity II, and a discharge pipe is fixedly connected to the closing plate;

[0014] The injection molding cavity I is rotatably connected to a plurality of stirring mechanisms, and the plurality of stirring mechanisms are transmission-connected to each other. The injection molding cavity I is fixedly connected to a power mechanism I for driving one of the stirring mechanisms to rotate, and the power mechanism I is preferably a servo motor;

[0015] The stirring mechanism comprises a stirring screw shaft I, the lower end of the stirring screw shaft I is fixedly connected with a material guide sleeve, the material guide sleeve is provided with a plurality of arc grooves, the lower end of the material guide sleeve is fixedly connected with a stirring screw shaft II, the stirring screw shaft II is located in the injection cavity II, the stirring screw shaft I is located in the injection cavity I, and the material guide sleeve is located between the convergence cavity and the expansion cavity;

[0016] A stripping mechanism is fixedly connected in the wind cavity, and the stripping mechanism includes a stripping bracket and a plurality of stripping screw shafts rotatably connected to the stripping bracket, and the plurality of stripping screw shafts are transmission-connected to each other, and a power mechanism II is fixedly connected to the stripping bracket to drive one of the screw shafts to rotate, and the power mechanism II is preferably a servo motor;

[0017] A rotating roller I is rotatably connected in the tearing cavity, and a plurality of rows of straight hooks are fixedly connected to the rotating roller I. The upper end of the rotating roller I is located in the wind cavity, and a power mechanism III for driving the rotating roller I to rotate is fixedly connected to the tearing cavity, and the power mechanism III is preferably a servo motor;

[0018] A second telescopic mechanism is fixedly connected to the tearing cavity, a rotating roller II is rotatably connected to the telescopic end of the second telescopic mechanism, a plurality of rows of curved hooks I are fixedly connected to the rotating roller II, the plurality of rows of curved hooks I and the plurality of rows of straight hooks are mutually staggered, a power mechanism IV is fixedly connected to the telescopic end of the second telescopic mechanism for driving the rotating roller II to rotate, and the power mechanism IV is preferably a servo motor;

[0019] A rotating roller III is rotatably connected to the tearing cavity, and multiple rows of curved hooks II are arranged on the rotating roller III. The multiple rows of curved hooks II and the multiple rows of curved hooks I are offset from each other. A power mechanism V is fixedly connected to the tearing cavity for driving the rotating roller III to rotate. The power mechanism V is preferably a servo motor, and the fluff releasing groove is located between the rotating roller II and the rotating roller III. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] Figure 1It is a schematic diagram of the method for preparing healthy and environmentally friendly plastics of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0023] Figure 3 It is a cross-sectional structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0024] Figure 4 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0025] Figure 5 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0026] Figure 6 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0027] Figure 7 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0028] Figure 8 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0029] Fig. 9 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0030] Fig.10 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0031] Fig.11 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0032] Fig.12 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention;

[0033] Fig.13 It is a partial structural schematic diagram of the healthy and environmentally friendly plastic preparation device of the present invention.

[0034] In the figure: injection molding cavity Ⅰ10; feeding pipe 11; convergence cavity 12; wind cavity 20; injection molding cavity Ⅱ30; expansion cavity 31; tearing cavity 40; flocculent release groove 41; first telescopic mechanism 51; closing plate 52; discharge pipe 53; stirring mechanism 60; stirring screw shaft Ⅰ61; stirring screw shaft Ⅱ62; material guide sleeve 63; stripping mechanism 70; stripping bracket 71; stripping screw shaft 72; rotating roller Ⅰ81; rotating roller Ⅱ82; rotating roller Ⅲ83; straight hook 84; curved hook Ⅰ85; curved hook Ⅱ86; second telescopic mechanism 87. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, the steps and functions of a healthy and environmentally friendly plastic preparation method are described in detail below;

[0037] A method for preparing healthy and environmentally friendly plastics, the method comprising the following steps:

[0038] Step 1: Inject the torn flocculent additive into between the injection molding cavity Ⅰ10 and the injection molding cavity Ⅱ30 through the wind cavity 20;

[0039] Step 2: Put the plastic raw material into the injection molding cavity I10, heat, mix and stir it, and then pass it into the injection molding cavity II30;

[0040] Step 3: Injection molding cavity II 30 mixes and stirs the plastic raw material and the flocculent additive, and then performs injection molding.

[0041] When in use, the flocculent additive to be added is torn off, and then injected into the heated plastic raw material through the action of wind. The plastic raw material here can be the raw material of environmentally friendly plastic commonly used in the prior art, and the flocculent additive here can be cotton wool in the prior art, or other natural fibers, or other environmentally friendly fibers that are easy to handle. Then, the flocculent additive and the heated plastic raw material are mixed and then injection molded to form an environmentally friendly plastic. In this way, while ensuring the physical properties of the environmentally friendly plastic, when the environmentally friendly plastic breaks, the fibers in the flocculent additive will pull the plastic fragments so that a large amount of splashing will not be generated, thereby increasing the safety performance of the plastic.

[0042] The following is a detailed description of the structure and function of a healthy and environmentally friendly plastic. The plastic is mixed with flocculent additives. It is necessary to fully mix the flocculent additives with the environmentally friendly plastic raw materials so that the flocculent additives are evenly distributed in the shape-preserving plastic, thereby ensuring the physical properties of the shape-preserving plastic. Since the flocculent additives are flexible, when the plastic breaks, the flocculent additives can play a "broken lotus root and silk connected" effect;

[0043] like Figures 2 to 13 As shown, the structure and function of a healthy and environmentally friendly plastic preparation device are described in detail below;

[0044] A healthy and environmentally friendly plastic preparation device comprises an injection cavity Ⅰ10, a feeding pipe 11 is fixedly connected to the injection cavity Ⅰ10, a converging cavity 12 is arranged at the lower end of the injection cavity Ⅰ10, and the lower end of the converging cavity 12 is opened;

[0045] The side of the injection cavity Ⅰ10 is fixedly connected with the wind cavity 20, the lower end of the injection cavity Ⅰ10 is fixedly connected with the injection cavity Ⅱ30, the upper end of the injection cavity Ⅱ30 is provided with an expansion cavity 31, the upper end of the expansion cavity 31 is open, and the convergence cavity 12 is located on the upper side of the expansion cavity 31;

[0046] Both sides of the wind cavity 20 are opened. One end of the wind cavity 20 is connected to an air pump, and the other end of the wind cavity 20 is located between the convergence cavity 12 and the expansion cavity 31.

[0047] The lower end of the wind cavity 20 is fixedly connected to the tearing cavity 40, and a fluff release groove 41 is provided on the tearing cavity 40. A first telescopic mechanism 51 is fixedly connected to the tearing cavity 40, and a closing plate 52 is fixedly connected to the telescopic end of the first telescopic mechanism 51. The lower end of the injection cavity II 30 is open, and the closing plate 52 is slidably connected to the lower end of the injection cavity II 30. A discharge pipe 53 is fixedly connected to the closing plate 52;

[0048] The injection cavity Ⅰ10 is rotatably connected to a plurality of stirring mechanisms 60, and the plurality of stirring mechanisms 60 are transmission-connected to each other. The injection cavity Ⅰ10 is fixedly connected to a power mechanism Ⅰ for driving one of the stirring mechanisms 60 to rotate, and the power mechanism Ⅰ is preferably a servo motor;

[0049] The stirring mechanism 60 includes a stirring screw shaft I 61, a material guide sleeve 63 is fixedly connected to the lower end of the stirring screw shaft I 61, a plurality of arc grooves are arranged on the material guide sleeve 63, a stirring screw shaft II 62 is fixedly connected to the lower end of the material guide sleeve 63, the stirring screw shaft II 62 is located in the injection cavity II 30, the stirring screw shaft I 61 is located in the injection cavity I 10, and the material guide sleeve 63 is located between the convergence cavity 12 and the expansion cavity 31;

[0050] A stripping mechanism 70 is fixedly connected in the wind cavity 20, and the stripping mechanism 70 includes a stripping bracket 71 and a plurality of stripping screw shafts 72 rotatably connected to the stripping bracket 71, and the plurality of stripping screw shafts 72 are transmission-connected to each other, and a power mechanism II is fixedly connected to the stripping bracket 71 to drive one of the screw shafts 72 to rotate, and the power mechanism II is preferably a servo motor;

[0051] A rotating roller Ⅰ81 is rotatably connected in the tearing cavity 40, and a plurality of rows of straight hooks 84 are fixedly connected to the rotating roller Ⅰ81. The upper end of the rotating roller Ⅰ81 is located in the wind cavity 20. A power mechanism Ⅲ for driving the rotating roller Ⅰ81 to rotate is fixedly connected to the tearing cavity 40. The power mechanism Ⅲ is preferably a servo motor.

[0052] The tearing cavity 40 is fixedly connected with a second telescopic mechanism 87, and a rotating roller II 82 is rotatably connected to the telescopic end of the second telescopic mechanism 87, and a plurality of rows of curved hooks I 85 are fixedly connected to the rotating roller II 82, and the plurality of rows of curved hooks I 85 and the plurality of rows of straight hooks 84 are mutually staggered, and a power mechanism IV for driving the rotating roller II 82 to rotate is fixedly connected to the telescopic end of the second telescopic mechanism 87, and the power mechanism IV is preferably a servo motor;

[0053] The tearing cavity 40 is rotatably connected to a rotating roller III 83, on which a plurality of rows of hooks II 86 are arranged, and the plurality of rows of hooks II 86 and the plurality of rows of hooks I 85 are staggered with each other. The tearing cavity 40 is fixedly connected to a power mechanism V for driving the rotating roller III 83 to rotate, and the power mechanism V is preferably a servo motor. The cotton wool placing groove 41 is located between the rotating roller II 82 and the rotating roller III 83.

[0054] When in use, the plastic raw material particles are introduced into the injection molding cavity Ⅰ10 through the feeding pipe 11, and the flocculent additives are placed in the tearing cavity 40 through the flocculent placing groove 41;

[0055] A heating mechanism is provided in the injection molding cavity Ⅰ10, and the heating mechanism can be an electric heating wire. When the power mechanism Ⅰ is started, the output shaft of the power mechanism Ⅰ starts to rotate, and the output shaft of the power mechanism Ⅰ drives one of the stirring mechanisms 60 to rotate. The multiple stirring mechanisms 60 are connected by transmission, and then the multiple stirring mechanisms 60 rotate together. Figure 3 As shown, the stirring screw shaft I 61 in the injection cavity I 10 and the stirring screw shaft II 62 in the wind cavity 20 rotate simultaneously;

[0056] The plastic raw material particles are heated in the injection molding cavity Ⅰ10, and at the same time, the plurality of stirring screw shafts Ⅰ61 rotate together to push the heated plastic raw materials to move downward;

[0057] The flocculent additive added to the tearing cavity 40 will be pulled by the rotating rollers II 82 and III 83, the power mechanism V is started, the output shaft of the power mechanism V starts to rotate, the output shaft of the power mechanism V drives the rotating roller III 83 to rotate, the power mechanism IV is started, the output shaft of the power mechanism IV starts to rotate, the output shaft of the power mechanism IV drives the rotating roller II 82 to rotate, the rotating roller III 83 drives the multiple rows of curved hooks II 86 thereon to rotate, the rotating roller II 82 drives the multiple rows of curved hooks I 85 thereon to rotate, the multiple rows of curved hooks II 86 and the multiple rows of curved hooks I 85 are staggered with each other, and at the same time, Figure 3As shown, the rotating roller II 82 and the rotating roller III 83 rotate in opposite directions, such as the rotating roller II 82 on the right rotates clockwise, and the rotating roller III 83 on the right rotates counterclockwise. At the same time, the rotating direction of the rotating roller II 82 is the same as the twisting direction of the hook I 85, and the rotating direction of the rotating roller III 83 is the same as the twisting direction of the hook II 86. When the rotating roller II 82 and the rotating roller III 83 rotate, the flocculent additive added to the tearing cavity 40 will be continuously torn, so that the flocculent additive is dispersed as much as possible.

[0058] Further, the second telescopic mechanism 87 is started. The second telescopic mechanism 87 can be a hydraulic cylinder or an electric push rod. The telescopic end of the second telescopic mechanism 87 continuously drives the rotating roller II 82 to reciprocate up and down, and then the rotating roller II 82 moves downward to approach the rotating roller III 83. During the upward movement of the rotating roller II 82, the flocculent additive between the rotating roller II 82 and the rotating roller III 83 is torn, and a part of the flocculent additive is hooked on the curved hook I 85. The rotating roller II 82 moves upward and approaches the rotating roller I 81. The power mechanism III is started, and the output shaft of the power mechanism III starts to rotate. The output shaft of the power mechanism III drives the rotating roller I 81 to rotate, and the rotating roller I 81 drives the multiple straight hooks 84 thereon to rotate;

[0059] like Figure 3 As shown, the rotating roller Ⅰ81 on the right rotates counterclockwise, and the rotating roller Ⅰ81 drives the straight hook 84 to move. The straight hook 84 is L-shaped, and the straight hook 84 hooks the flocculent additive on the curved hook Ⅰ85 onto the straight hook 84;

[0060] The upper side of the rotating roller I 81 is located in the wind cavity 20, and the wind is continuously introduced into the wind cavity 20. The wind continuously blows the straight hook 84, so that the flocculent additives on the straight hook 84 fall off and enter between the convergence cavity 12 and the expansion cavity 31;

[0061] Furthermore, a stripping mechanism 70 is provided. In order to help the straight hook 84 strip the flocculent additive, the power mechanism II is started, and the output shaft of the power mechanism II drives the stripping screw shaft 72 to rotate. The stripping screw shaft 72 is provided with flexible spiral blades. The stripping screw shaft 72 can contact the straight hook 84. When the stripping screw shaft 72 rotates, a lateral thrust is generated to push the flocculent additive away from the straight hook 84. At the same time, under the action of wind force, the torn flocculent additive continuously enters between the convergence cavity 12 and the expansion cavity 31.

[0062] Further, such as Figure 3As shown, the plastic raw material continuously passes through the convergence cavity 12 into the expansion cavity 31 under the push of multiple stirring spiral shafts I 61. At this time, the plastic raw material is in a molten state, and then the upper end of the guide sleeve 63 is conical, and multiple guide grooves are arranged on the guide sleeve 63, so that the plastic raw material flows through the guide sleeve 63 and then enters the expansion cavity 31 from the convergence cavity 12, and the flocculent additive also enters the expansion cavity 31;

[0063] The multiple stirring screw shafts II 62 continuously stir to complete the mixing of the plastic raw material and the flocculent additive. At the same time, the multiple stirring screw shafts II 62 generate a downward driving force during the rotation process, pushing the mixture of the plastic raw material and the flocculent additive to continuously move downward, and then discharged from the discharge pipe 53 to complete the injection molding;

[0064] Further, the first telescopic mechanism 51 is started. The first telescopic mechanism 51 can be a hydraulic cylinder or an electric push rod. The telescopic end of the first telescopic mechanism 51 drives the closing plate 52 to move, and the closing plate 52 drives the discharge pipe 53 to move, thereby adjusting the discharge position of the discharge pipe 53 to meet different usage requirements.

Claims

1. A method for preparing healthy and environmentally friendly plastics, characterized in that: The method comprises the following steps: Step 1: injecting the torn flocculent additive into between the injection molding cavity I (10) and the injection molding cavity II (30) through the wind cavity (20); Step 2: Put the plastic raw material into the injection molding cavity I (10), heat, mix and stir it, and then pass it into the injection molding cavity II (30); Step 3: Injection molding cavity II (30) mixes and stirs the plastic raw material and the flocculent additive, and then performs injection molding; The injection cavity I (10) is fixedly connected to a feeding pipe (11); a converging cavity (12) is arranged at the lower end of the injection cavity I (10); the lower end of the converging cavity (12) is open; a wind cavity (20) is fixedly connected to the side of the injection cavity I (10); the lower end of the injection cavity I (10) is fixedly connected to the injection cavity II (30); an expansion cavity (31) is arranged at the upper end of the injection cavity II (30); the upper end of the expansion cavity (31) is open; and the converging cavity (12) is located on the upper side of the expansion cavity (31); Both sides of the wind cavity (20) are open, one end of the wind cavity (20) is open and connected to an air pump, the other end of the wind cavity (20) is open and located between the convergence cavity (12) and the expansion cavity (31), the lower end of the wind cavity (20) is fixedly connected to the tearing cavity (40), the tearing cavity (40) is provided with a fluff release groove (41), the injection cavity II (30) is fixedly connected to a first telescopic mechanism (51), the telescopic end of the first telescopic mechanism (51) is fixedly connected to a closing plate (52), the lower end of the injection cavity II (30) is open, the closing plate (52) is slidably connected to the lower end of the injection cavity II (30), and the closing plate (52) is fixedly connected to a discharge pipe (53); The injection cavity I (10) is rotatably connected to a plurality of stirring mechanisms (60), and the plurality of stirring mechanisms (60) are transmission-connected to each other; The stirring mechanism (60) comprises a stirring screw shaft I (61), the lower end of the stirring screw shaft I (61) is fixedly connected to a material guide sleeve (63), the material guide sleeve (63) is provided with a plurality of arc grooves, the lower end of the material guide sleeve (63) is fixedly connected to a stirring screw shaft II (62), the stirring screw shaft II (62) is located in the injection cavity II (30), the stirring screw shaft I (61) is located in the injection cavity I (10), and the material guide sleeve (63) is located between the convergence cavity (12) and the expansion cavity (31).

2. A method for preparing healthy and environmentally friendly plastic according to claim 1, characterized in that: A stripping mechanism (70) is fixedly connected inside the wind cavity (20), and the stripping mechanism (70) comprises a stripping bracket (71) and a plurality of stripping screw shafts (72) rotatably connected to the stripping bracket (71), and the plurality of stripping screw shafts (72) are transmission-connected to each other.

3. A method for preparing healthy and environmentally friendly plastic according to claim 2, characterized in that: A rotating roller I (81) is rotatably connected in the tearing cavity (40), and a plurality of rows of straight hooks (84) are fixedly connected to the rotating roller I (81). The upper end of the rotating roller I (81) is located in the wind cavity (20).

4. A method for preparing healthy and environmentally friendly plastic according to claim 3, characterized in that: The tearing cavity (40) is fixedly connected to a second telescopic mechanism (87), the telescopic end of the second telescopic mechanism (87) is rotatably connected to a rotating roller II (82), and the rotating roller II (82) is fixedly connected to multiple rows of curved hooks I (85), and the multiple rows of curved hooks I (85) and the multiple rows of straight hooks (84) are staggered with each other.

5. A method for preparing healthy and environmentally friendly plastic according to claim 4, characterized in that: The tearing cavity (40) is rotatably connected to a rotating roller III (83), on which a plurality of rows of curved hooks II (86) are arranged, the plurality of rows of curved hooks II (86) and the plurality of rows of curved hooks I (85) are staggered with each other, and the cotton wool releasing groove (41) is located between the rotating roller II (82) and the rotating roller III (83).

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