Process for preparing plastic particles by recycling plastic and plastic particles prepared by process

Abstract

The invention relates to plastic particle preparation, in particular to a process for preparing plastic particles through plastic recovery and the prepared plastic particles thereof.The process comprises a device support, an injection molding barrel is fixedly connected to the device support, a forming sleeve is fixedly connected to the bottom of the injection molding barrel, and a rotating sleeve is rotationally connected to the forming sleeve; a plurality of arc extrusion blocks are slidably connected into the injection molding cylinder. The technology comprises the following steps that firstly, recycled plastic is placed in a heating box to be heated, and an extrusion block II and an extrusion block I extrude the recycled plastic; secondly, the melted recycled plastic in the heating box is extracted through an extraction cavity, and the melted recycled plastic is injected into an injection molding barrel through the extraction cavity; thirdly, the recycled plastic in the molten state is extruded through a plurality of arc extrusion blocks, and extrusion forming is conducted through a forming sleeve; bubbles in the plastic waste in the molten state can be reduced, and then the quality of plastic particles is guaranteed.

Description

Technical Field

[0001] The invention relates to the preparation of plastic particles, and more particularly to a process for preparing plastic particles by recycling plastics and the prepared plastic particles. Background Art

[0002] With the widespread use of plastic products, the treatment of plastic waste has become a focus of global environmental issues; it is necessary to effectively re-process the recycled plastic waste, for example, publication number CN112355024A discloses a disposable medical plastic waste treatment device; the setting of the crushing component realizes sufficient crushing of the waste in the crushing chamber, and the rotation of the strengthening component can further enhance the crushing effect. At the same time, the setting of the screening component realizes the screening of medical waste, reducing the cost of medical waste treatment; however, in the process of melting and re-molding the plastic waste, due to the irregular shape, bubbles are often mixed in during the period, resulting in the quality of the processed plastic particles cannot be guaranteed. Summary of the invention

[0003] The purpose of the present invention is to provide a process for preparing plastic particles by recycling plastic and the plastic particles prepared therefrom, which can reduce bubbles in plastic waste in a molten state and thus ensure the quality of the plastic particles.

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

[0005] A plastic recycling device for preparing plastic particles, comprising a device bracket, an injection molding cylinder is fixedly connected to the device bracket, a molding sleeve is fixedly connected to the bottom of the injection molding cylinder, a rotating sleeve is rotatably connected to the molding sleeve, and a plurality of arc extrusion blocks are slidably connected in the injection molding cylinder;

[0006] The forming sleeve is provided with a plurality of forming holes, and the rotating sleeve is provided with a plurality of cutting holes, and the plurality of forming holes and the plurality of cutting holes correspond to each other;

[0007] The forming sleeve is fixedly connected to a power mechanism for driving the rotating sleeve to rotate;

[0008] A plurality of telescopic mechanisms I are fixedly connected to both upper and lower sides of the device bracket, and the telescopic ends of the plurality of telescopic mechanisms I are respectively fixedly connected to a plurality of circular arc extrusion blocks, and the plurality of circular arc extrusion blocks are symmetrically distributed in pairs up and down;

[0009] The injection molding cylinder is connected with a plurality of connecting pipes I, which correspond to a plurality of pairs of arc extrusion blocks respectively, and each connecting pipe I is fixedly connected with an extraction cavity, and each extraction cavity is fixedly connected with a telescopic mechanism II, and each telescopic end of the telescopic mechanism II is fixedly connected with an extraction plate, and the extraction plate is slidably connected in the extraction cavity;

[0010] The bottom of the extraction cavity is fixedly connected with a connecting pipe II, and the connecting pipe II is fixedly connected with a heating box, in which a heating mechanism is arranged, and the level of the heating box is lower than the level of the extraction cavity;

[0011] The heating box is fixedly connected with a telescopic mechanism III, and the telescopic end of the telescopic mechanism III is fixedly connected with an extrusion block I. The heating box is fixedly connected with a telescopic mechanism IV, and the telescopic end of the telescopic mechanism IV is fixedly connected with an extrusion block II. The heating box is provided with a discharge hole;

[0012] The extrusion block II is provided with an extraction groove, and a gas pipeline is fixedly connected to the extrusion block II, the gas pipeline is connected to the extraction groove, and the extraction groove can be connected to the connecting pipeline II;

[0013] A process for recycling plastics to prepare plastic particles, the process comprising the following steps:

[0014] Step 1: The recycled plastic is placed in a heating box for heating, and the extrusion blocks II and I extrude the recycled plastic;

[0015] Step 2: The extraction cavity extracts the melted recycled plastic in the heating box, and the extraction cavity injects the molten recycled plastic into the injection molding cylinder;

[0016] Step 3: Multiple arc extrusion blocks extrude the recycled plastic in a molten state and extrude it into shape through a molding sleeve;

[0017] A plastic particle is formed by processing using a device for preparing plastic particles by recycling plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a schematic structural diagram of a device for recycling plastics to prepare plastic particles according to the present invention;

[0020] Figure 2 is a cross-sectional view of a device for recycling plastics to prepare plastic particles according to the present invention;

[0021] Figure 3 It is a schematic diagram of the device support structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the molding sleeve of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the arc extrusion block of the present invention;

[0024] Figure 6 It is a schematic diagram of the extraction cavity structure of the present invention;

[0025] Figure 7 is a cross-sectional view of the extraction cavity of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the connecting pipeline I of the present invention;

[0027] Fig. 9 It is a schematic diagram of the heating box structure of the present invention;

[0028] Fig.10 It is a cross-sectional view of a heating box of the present invention.

[0029] In the figure: device bracket 11; injection cylinder 12; molding sleeve 21; rotating sleeve 22; telescopic mechanism I 31; arc extrusion block 32; extraction cavity 41; telescopic mechanism II 42; extraction plate 43; connecting pipe I 44; heating box 51; connecting pipe II 52; telescopic mechanism III 53; extrusion block I 54; telescopic mechanism IV 55; extrusion block II 56; extraction groove 57; gas pipeline 58; discharge hole 59. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 10 As shown, in order to achieve the technical effect of "reducing bubbles in plastic waste in a molten state, thereby ensuring the quality of plastic particles", the structure and function of the plastic recycling and plastic particle preparation device are described in detail below;

[0032] A plastic recycling device for preparing plastic particles comprises a device support 11, an injection molding cylinder 12 is fixedly connected to the device support 11, a molding sleeve 21 is fixedly connected to the bottom of the injection molding cylinder 12, a rotating sleeve 22 is rotatably connected to the molding sleeve 21, and a plurality of arc extrusion blocks 32 are slidably connected in the injection molding cylinder 12;

[0033] The forming sleeve 21 is provided with a plurality of forming holes, and the rotating sleeve 22 is provided with a plurality of cutting holes, and the plurality of forming holes and the plurality of cutting holes correspond to each other;

[0034] The molding sleeve 21 is fixedly connected with a power mechanism for driving the rotating sleeve 22 to rotate;

[0035] Multiple telescopic mechanisms I31 are fixedly connected to the upper and lower sides of the device bracket 11, and the telescopic ends of the multiple telescopic mechanisms I31 are respectively fixedly connected to multiple arc extrusion blocks 32, and the multiple arc extrusion blocks 32 are symmetrically distributed in multiple pairs up and down;

[0036] The injection cylinder 12 is connected with a plurality of connecting pipes I44, and the plurality of connecting pipes I44 correspond to a plurality of pairs of arc extrusion blocks 32, and each connecting pipe I44 is fixedly connected with an extraction cavity 41, and each extraction cavity 41 is fixedly connected with a telescopic mechanism II42, and each telescopic end of the telescopic mechanism II42 is fixedly connected with an extraction plate 43, and the extraction plate 43 is slidably connected in the extraction cavity 41;

[0037] The bottom of the extraction chamber 41 is fixedly connected with a connecting pipe II 52, and the connecting pipe II 52 is fixedly connected with a heating box 51, and a heating mechanism is arranged in the heating box 51, and the level of the heating box 51 is lower than the level of the extraction chamber 41;

[0038] The heating box 51 is fixedly connected with a telescopic mechanism III 53, and a squeezing block I 54 is fixedly connected to the telescopic end of the telescopic mechanism III 53. The heating box 51 is fixedly connected with a telescopic mechanism IV 55, and a squeezing block II 56 is fixedly connected to the telescopic end of the telescopic mechanism IV 55. The heating box 51 is provided with a discharge hole 59.

[0039] The extrusion block II 56 is provided with an extraction groove 57, and a gas pipeline 58 is fixedly connected to the extrusion block II 56. The gas pipeline 58 is connected to the extraction groove 57, and the extraction groove 57 can be connected to the connecting pipeline II 52;

[0040] When using, Figure 1 As shown, the recycled plastic is placed between the extrusion block I54 and the extrusion block II56 through the discharge hole 59, the recycled plastic is heated by the heating box 51, and the telescopic mechanism III53 and the telescopic mechanism IV55 are started. The telescopic mechanism III53 and the telescopic mechanism IV55 can be hydraulic cylinders or electric push rods. The telescopic end of the telescopic mechanism III53 drives the extrusion block I54 to move, and the telescopic end of the telescopic mechanism IV55 drives the extrusion block II56 to move. The extrusion block I54 and the extrusion block II56 move close to each other, and the heated and melted recycled plastic is then extruded, so that the upper end surface of the recycled plastic in the molten state is flush with the upper end surface of the inner side of the heating box 51, and then all the bubbles in the recycled plastic in the molten state are squeezed out;

[0041] Further, the telescopic mechanism IV55 is started in advance, and the telescopic end of the telescopic mechanism IV55 drives the extrusion block II56 to move, so that the extraction groove 57 moves to the position of the connecting pipe II52, so that the gas pipe 58 is connected to the connecting pipe II52, and the telescopic mechanism II42 is started. The telescopic mechanism II42 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism II42 drives the extraction plate 43 to move, so that the extraction plate 43 slides in the extraction cavity 41, and then the connecting pipe II52 and the connecting pipe I44 are connected through the extraction cavity 41, and the gas pipeline 58 is connected to the air pump. The air pump performs a vacuum treatment on the connecting pipe II52, the connecting pipe I44 and the extraction cavity 41, and then the telescopic end of the telescopic mechanism II42 is reset, and then the telescopic mechanism IV55 is started, so that the extrusion block II56 closes the connecting pipe II52, and then the recycled plastic is put into the heating box 51;

[0042] After all bubbles in the molten recycled plastic are squeezed out, the telescopic mechanism III53 and the telescopic mechanism IV55 are started, and the telescopic ends of the telescopic mechanism III53 and the telescopic mechanism IV55 drive the extrusion block I54 and the extrusion block II56 to move, so that the space between the extrusion block I54 and the extrusion block II56 moves into the heating box 51, the upper side of the connecting pipe II52, the extrusion block I54 and the extrusion block II56 move close to each other, and the molten recycled plastic is squeezed into the connecting pipe II52, and the telescopic mechanism II42 is started, and the telescopic end of the telescopic mechanism II42 drives the extraction plate 43 to move, so that the extraction plate 43 moves in the extraction cavity 41, and the molten recycled plastic is drawn into the extraction cavity 41, and at the same time, the extrusion block I54 and the extrusion block II56 contact, and the connecting pipe II52 is closed;

[0043] The telescopic mechanism I31 is started. The telescopic mechanism I31 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism I31 drives the arc extrusion block 32 to move, so that the two arc extrusion blocks 32 are separated. At the same time, the telescopic mechanism II42 is started. The extraction plate 43 pushes the molten recycled plastic in the extraction cavity 41 into the space between the arc extrusion blocks 32. Since the operation is performed in a vacuum state throughout the process, the quality of the plastic particles can be guaranteed. The telescopic end of the telescopic mechanism I31 drives the arc extrusion block 32 to move, so that the space between the arc extrusion block 32 and the arc extrusion block 32 moves into the molding sleeve 21. The telescopic mechanism I31 is started to drive the two arc extrusion blocks 32 to move. The arc extrusion blocks 32 are close to each other, so that the recycled plastic in a molten state passes through the forming hole and the cutting hole, and the power mechanism is started. The power mechanism is preferably a servo motor, and the output shaft of the power mechanism drives the rotating sleeve 22 to rotate, so that the forming hole and the cutting hole are misaligned with each other, thereby completing the preparation of plastic particles; when the recycled plastic in a molten state is completely injection molded, the telescopic mechanism I31 located on the upper side is started, so that the telescopic mechanism I31 drives the arc extrusion block 32 to move to the upper end of the connecting pipe I44, and at this time, the connecting pipe I44 is connected to the forming hole on the forming sleeve 21, and the extraction cavity 41 is started, so that the connecting pipe II52 is connected to the connecting pipe I44;

[0044] Then, the telescopic mechanism IV55 is started, and the telescopic end of the telescopic mechanism IV55 drives the extrusion block II56 to move, so that the extraction groove 57 and the connecting pipe II52 are connected, and the gas pipe 58 passes the gas into the connecting pipe II52, and the residual molten recycled plastic in the connecting pipe II52, the extraction cavity 41 and the connecting pipe I44 is pushed into the injection cylinder 12, and discharged from the molding hole on the molding sleeve 21, so as to keep the connecting pipe II52, the extraction cavity 41 and the connecting pipe I44 clean, so as to facilitate the next processing;

[0045] A process for recycling plastics to prepare plastic particles, the process comprising the following steps:

[0046] Step 1: The recycled plastic is placed in a heating box 51 for heating, and the extrusion block II 56 and the extrusion block I 54 extrude the recycled plastic;

[0047] Step 2: The extraction cavity 41 extracts the melted recycled plastic in the heating box 51, and the extraction cavity 41 injects the molten recycled plastic into the injection cylinder 12;

[0048] Step 3: A plurality of arc extrusion blocks 32 extrude the molten recycled plastic and extrude it into shape through the molding sleeve 21;

[0049] A plastic particle is formed by processing using a device for preparing plastic particles by recycling plastic.

Claims

1. A device for recycling plastics to prepare plastic particles, comprising a device support (11), characterized in that: An injection molding cylinder (12) is fixedly connected to the device bracket (11), a molding sleeve (21) is fixedly connected to the bottom of the injection molding cylinder (12), a rotating sleeve (22) is rotatably connected to the molding sleeve (21), and a plurality of arc extrusion blocks (32) are slidably connected inside the injection molding cylinder (12).

2. The device for preparing plastic particles by recycling plastic according to claim 1, characterized in that: The forming sleeve (21) is provided with a plurality of forming holes, and the rotating sleeve (22) is provided with a plurality of cutting holes, and the plurality of forming holes and the plurality of cutting holes correspond to each other.

3. The device for preparing plastic particles by recycling plastic according to claim 2, characterized in that: The molding sleeve (21) is fixedly connected to a power mechanism for driving the rotating sleeve (22) to rotate.

4. The device for preparing plastic particles by recycling plastic according to claim 1, characterized in that: A plurality of telescopic mechanisms I (31) are fixedly connected to both upper and lower sides of the device bracket (11); the telescopic ends of the plurality of telescopic mechanisms I (31) are respectively fixedly connected to a plurality of circular arc extrusion blocks (32); and the plurality of circular arc extrusion blocks (32) are symmetrically distributed in pairs up and down.

5. The device for preparing plastic particles by recycling plastic according to claim 4, characterized in that: The injection molding cylinder (12) is connected to a plurality of connecting pipes I (44), and the plurality of connecting pipes I (44) respectively correspond to a plurality of pairs of arc extrusion blocks (32). Each connecting pipe I (44) is fixedly connected to an extraction cavity (41), and each extraction cavity (41) is fixedly connected to a telescopic mechanism II (42). The telescopic end of each telescopic mechanism II (42) is fixedly connected to an extraction plate (43), and the extraction plate (43) is slidably connected in the extraction cavity (41).

6. The device for preparing plastic particles by recycling plastic according to claim 5, characterized in that: The bottom of the extraction chamber (41) is fixedly connected to a connecting pipe II (52), and the connecting pipe II (52) is fixedly connected to a heating box (51). A heating mechanism is arranged in the heating box (51), and the level of the heating box (51) is lower than the level of the extraction chamber (41).

7. The device for preparing plastic particles by recycling plastic according to claim 6, characterized in that: A telescopic mechanism III (53) is fixedly connected inside the heating box (51), and an extrusion block I (54) is fixedly connected to the telescopic end of the telescopic mechanism III (53). A telescopic mechanism IV (55) is fixedly connected inside the heating box (51), and an extrusion block II (56) is fixedly connected to the telescopic end of the telescopic mechanism IV (55). A discharge hole (59) is provided on the heating box (51).

8. The device for preparing plastic particles by recycling plastic according to claim 7, characterized in that: The extrusion block II (56) is provided with an extraction groove (57), and a gas pipeline (58) is fixedly connected to the extrusion block II (56). The gas pipeline (58) is connected to the extraction groove (57), and the extraction groove (57) can be connected to the connecting pipeline II (52).

9. A process for recycling plastics to prepare plastic particles, characterized in that: The process includes the following steps: Step 1: The recycled plastic is placed in a heating box (51) for heating, and the extrusion block II (56) and the extrusion block I (54) extrude the recycled plastic; Step 2: The extraction cavity (41) extracts the melted recycled plastic in the heating box (51), and the extraction cavity (41) injects the molten recycled plastic into the injection cylinder (12); Step 3: A plurality of arc extrusion blocks (32) extrude the recycled plastic in a molten state and extrude the plastic into a mold through a molding sleeve (21).

10. Plastic particles prepared by the process for preparing plastic particles by recycling plastics as claimed in claim 9, characterized in that: The plastic particles are formed by using a plastic recycling device for preparing plastic particles.

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