Plastic particles and preparation process thereof

Abstract

The invention relates to plastic particle processing, in particular to a plastic particle and a preparation process thereof, the plastic particle is columnar, and the section of the columnar shape is triangular, quadrilateral or circular; a plastic particle preparation technology comprises the following steps that firstly, a plurality of forming molds with forming holes in different shapes are arranged, and an injection barrel is sleeved with the forming molds in the specified shapes; 2, the plastic particle raw materials in the molten state are injected into the forming mold through an injection barrel; 3, the plastic particle raw materials are subjected to extrusion molding through the forming mold, and columnar plastic particles of different shapes are formed; and columnar plastic particles with different shapes can be processed.

Description

Technical Field

[0001] The invention relates to plastic particle processing, more specifically to plastic particles and a preparation process thereof. Background Art

[0002] Plastic particles are the basic raw materials in the plastics industry, usually composed of polymers and their additives, and are mainly used for subsequent molding processes, such as injection molding, extrusion, blow molding, etc.; for example, publication number CN118456702A discloses a plastic particle processing machine and a plastic particle processing method, including a cooling boat and a front frame fixedly connected to the front side of the cooling boat, the front side of the cooling boat is rotatably connected to a threaded rod, the top of the threaded rod is rotatably connected to the middle of the upper side of the front frame, the middle part of the threaded rod is threadedly connected to a receiving frame, the front side surface of the receiving frame is evenly provided with a plurality of sieve holes, and the rear bottom of the receiving frame is provided with a slope; however, the disadvantage of this patent is that it is impossible to process columnar plastic particles of different shapes. Summary of the invention

[0003] The purpose of the present invention is to provide a plastic particle and a preparation process thereof, which can process columnar plastic particles of different shapes.

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

[0005] A plastic particle preparation device comprises a material injection barrel, a mounting bracket is fixedly connected to the material injection barrel, a telescopic mechanism I is fixedly connected to the mounting bracket, a sliding bracket is fixedly connected to the telescopic end of the telescopic mechanism I, a replacement bracket is slidably connected to the sliding bracket, a plurality of forming molds are installed on the replacement bracket, the forming molds can be sleeved on the material injection barrel, and the forming hole shape of each forming mold is different;

[0006] The molding die comprises a mounting sleeve, which can be mounted on the injection barrel, the mounting sleeve is fixedly connected with a sliding track, and the mounting sleeve is provided with two rows of multiple telescopic mechanisms II arranged in parallel, in each row of multiple telescopic mechanisms II, the first telescopic mechanism II is fixedly connected to the mounting sleeve, the second telescopic mechanism II is fixedly connected to the telescopic end of the first telescopic mechanism II, the third telescopic mechanism II is fixedly connected to the telescopic end of the second telescopic mechanism II, and so on, the telescopic end of each telescopic mechanism II is fixedly connected with a telescopic mechanism III, the telescopic end of each telescopic mechanism III is fixedly connected with a cutting tool, each cutting tool is provided with a cutting hole, two cutting tools at the same position can contact and engage with each other, and the sizes of the cutting holes on the multiple cutting tools are successively smaller from the front to the back;

[0007] The mounting sleeve is fixedly connected with a mounting seat, and a plurality of forming blocks are arranged at the front end of the mounting seat, each forming block comprises a plurality of forming blocks, each forming block is fixedly connected with a threaded column, the threaded column is slidably connected to the sliding track, and a locking nut is threadedly connected to the threaded column, and the locking nut is used to lock the position of the forming block;

[0008] Each forming block is provided with a forming hole, the forming holes on the multiple groups of forming blocks have the same shape, the forming holes on the multiple groups of forming blocks have different sizes, the forming holes on the multiple forming blocks in each group have the same shape and size, and the multiple groups of forming blocks are arranged in sequence from front to back according to the size of the forming holes;

[0009] From front to back, the two cutting tools at the first position can be inserted between the multiple forming blocks of the first group, and the two cutting tools at the second position can be inserted between the multiple forming blocks of the second group, and so on. The shapes of the two cutting holes formed after the two cutting tools are engaged are the same as the shapes and sizes of the forming holes on each group of forming blocks.

[0010] The forming hole is circular, quadrilateral or triangular;

[0011] The injection barrel is fixedly connected with a blanking pipe I, the injection barrel is fixedly connected with a driving motor I, the output shaft of the driving motor I is fixedly connected with a screw shaft I, the screw shaft I is located in the injection barrel, the injection barrel is fixedly connected with a feeding barrel, the feeding barrel is fixedly connected with a blanking pipe II, the feeding barrel is fixedly connected with a driving motor II, the output shaft of the driving motor II is fixedly connected with a screw shaft II, and the screw shaft II is located in the feeding barrel;

[0012] The sliding bracket is rotatably connected to a screw rod, and the sliding bracket is fixedly connected to a driving motor III for driving the screw rod to rotate, and the replacement bracket is connected to the screw rod through a thread;

[0013] A plastic particle, the plastic particle is columnar, and the cross section of the column is triangular, quadrilateral or circular;

[0014] A process for preparing plastic particles, the process comprising the following steps:

[0015] Step 1: a plurality of forming dies with forming holes of different shapes are provided, and a forming die of a specified shape is set on the injection barrel;

[0016] Step 2: injecting the molten plastic granules into the molding die through the injection barrel;

[0017] Step 3: The molding die extrudes and shapes the plastic granule raw materials to form columnar plastic granules of different shapes. 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 diagram of the process for preparing plastic particles of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the columnar plastic particles with a triangular cross section of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the columnar plastic particles with a quadrilateral cross section of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a cylindrical plastic particle with a circular cross section of the present invention;

[0023] Figure 5 It is a schematic structural diagram of a plastic particle preparation device of the present invention;

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

[0025] Figure 7 It is a schematic diagram of the structure of the feeding cylinder of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the replacement bracket of the present invention;

[0027] Fig. 9 It is a schematic diagram of the structure of a quadrilateral forming die of the present invention;

[0028] Fig.10 It is a schematic diagram of the circular forming mold structure of the present invention;

[0029] Fig.11 It is a schematic diagram of the triangular forming die structure of the present invention;

[0030] Fig.12 It is a schematic diagram of the molding die structure of the present invention;

[0031] Fig.13 It is a schematic diagram of the molding die structure of the present invention;

[0032] Fig.14 It is a schematic diagram of the molding die structure of the present invention.

[0033] In the figure: injection barrel 11; blanking pipe Ⅰ12; drive motor Ⅰ13; screw shaft Ⅰ14; mounting bracket 15; feeding barrel 21; blanking pipe Ⅱ22; drive motor Ⅱ23; screw shaft Ⅱ24; telescopic mechanism Ⅰ31; sliding bracket 32; screw rod 33; drive motor III34; replacement bracket 35; forming mold 40; mounting sleeve 41; sliding rail 42; telescopic mechanism Ⅱ43; telescopic mechanism III44; cutting tool 45; mounting seat 46; forming block 47; threaded column 48. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, the steps of the plastic granule preparation process are described below;

[0036] A process for preparing plastic particles, the process comprising the following steps:

[0037] Step 1: a plurality of molding dies 40 with molding holes of different shapes are provided, and the molding dies 40 of a specified shape are mounted on the injection barrel 11;

[0038] Step 2: injecting the molten plastic granules into the molding die 40 through the injection cylinder 11;

[0039] Step 3: The molding die 40 extrude and mold the plastic particle raw material to form columnar plastic particles of different shapes.

[0040] like Figures 2 to 4 As shown, the structure and function of plastic particles are described in detail below;

[0041] A plastic particle, the plastic particle is columnar, the columnar cross section is triangular, quadrilateral or circular, the cross section shape of the columnar plastic particle can be set according to the use requirements, such as hexagonal or octagonal, and the cross section shape of the columnar plastic particle can be set arbitrarily according to different use requirements;

[0042] like Figures 5 to 14 As shown, in order to facilitate the implementation of a plastic particle preparation process and the processing of plastic particles, a plastic particle preparation device is designed. The structure and function of the plastic particle preparation device are described in detail below;

[0043] A plastic particle preparation device comprises a material injection barrel 11, a mounting bracket 15 is fixedly connected to the material injection barrel 11, a telescopic mechanism I31 is fixedly connected to the mounting bracket 15, a sliding bracket 32 ​​is fixedly connected to the telescopic end of the telescopic mechanism I31, a replacement bracket 35 is slidably connected to the sliding bracket 32, a plurality of forming molds 40 are installed on the replacement bracket 35, the forming molds 40 can be sleeved on the material injection barrel 11, and the forming hole shape of each forming mold 40 is different;

[0044] The molding die 40 includes a mounting sleeve 41, which can be mounted on the injection barrel 11, and a sliding track 42 is fixedly connected to the mounting sleeve 41. The mounting sleeve 41 is provided with a plurality of telescopic mechanisms II43 arranged in parallel in two rows. In each row of the plurality of telescopic mechanisms II43, the first telescopic mechanism II43 is fixedly connected to the mounting sleeve 41, the second telescopic mechanism II43 is fixedly connected to the telescopic end of the first telescopic mechanism II43, and the third telescopic mechanism II43 is fixedly connected to the telescopic end of the second telescopic mechanism II43. By analogy, a telescopic mechanism III44 is fixedly connected to the telescopic end of each telescopic mechanism II43, and a cutting tool 45 is fixedly connected to the telescopic end of each telescopic mechanism III44. A cutting hole is provided on each cutting tool 45, and two cutting tools 45 at the same position can contact and engage with each other. The sizes of the cutting holes on the plurality of cutting tools 45 decrease from the front to the back.

[0045] The mounting sleeve 41 is fixedly connected with a mounting seat 46, and a plurality of forming blocks 47 are arranged at the front end of the mounting seat 46. Each forming block 47 includes a plurality of forming blocks 47, and each forming block 47 is fixedly connected with a threaded column 48, and the threaded column 48 is slidably connected to the sliding rail 42. The threaded column 48 is threadedly connected with a locking nut, and the locking nut is used to lock the position of the forming block 47;

[0046] Each forming block 47 is provided with a forming hole, and the forming holes on multiple groups of forming blocks 47 have the same shape and different sizes. The forming holes on multiple forming blocks 47 in each group have the same shape and size, and the multiple groups of forming blocks 47 are arranged in sequence from front to back according to the size of the forming holes;

[0047] From front to back, the two cutting tools 45 at the first position can be inserted between the first group of multiple forming blocks 47, and the two cutting tools 45 at the second position can be inserted between the second group of multiple forming blocks 47, and so on. The shapes of the two cutting holes formed by the two cutting tools 45 after being engaged are the same as the shapes and sizes of the forming holes on each group of forming blocks 47.

[0048] The forming hole is circular, quadrilateral or triangular;

[0049] The injection barrel 11 is fixedly connected with a blanking pipe Ⅰ12, the injection barrel 11 is fixedly connected with a driving motor Ⅰ13, the output shaft of the driving motor Ⅰ13 is fixedly connected with a screw shaft Ⅰ14, the screw shaft Ⅰ14 is located in the injection barrel 11, the injection barrel 11 is fixedly connected with a feeding barrel 21, the feeding barrel 21 is fixedly connected with a blanking pipe Ⅱ22, the feeding barrel 21 is fixedly connected with a driving motor Ⅱ23, the output shaft of the driving motor Ⅱ23 is fixedly connected with a screw shaft Ⅱ24, the screw shaft Ⅱ24 is located in the feeding barrel 21;

[0050] The sliding bracket 32 ​​is rotatably connected to a screw rod 33, and a driving motor III 34 for driving the screw rod 33 to rotate is fixedly connected to the sliding bracket 32, and the replacement bracket 35 is connected to the screw rod 33 by threads;

[0051] When using, Figure 5 As shown, the plastic granule raw material is dropped into the injection barrel 11 through the drop pipe Ⅰ12, and the plastic granule auxiliary material to be mixed is put into the feeding barrel 21 through the drop pipe Ⅱ22. A heating mechanism is arranged in the injection barrel 11, and the heating mechanism heats the plastic granule raw material to form a molten state. The drive motor Ⅰ13 is started, and the output shaft of the drive motor Ⅰ13 starts to rotate. The output shaft of the drive motor Ⅰ13 drives the screw shaft Ⅰ14 to rotate. When the screw shaft Ⅰ14 rotates, a lateral component force is generated to push the plastic granule raw material to move. The drive motor Ⅱ23 is started, and the output shaft of the drive motor Ⅱ23 drives the screw shaft Ⅱ24 to rotate. When the screw shaft Ⅱ24 rotates, a lateral component force is generated to push the plastic granule auxiliary material into the injection barrel 11 for mixing.

[0052] Furthermore, the speed of rotation of the output shaft of the spiral shaft II 24 can be controlled, thereby controlling the amount of plastic granule auxiliary materials added to meet different processing requirements. The telescopic mechanism I 31 and the drive motor III 34 are started in advance. The telescopic mechanism I 31 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism I 31 drives the sliding bracket 32 ​​to move, thereby adjusting the position of the sliding bracket 32. The output shaft of the drive motor III 34 drives the screw rod 33 to rotate. When the screw rod 33 rotates, it drives the replacement bracket 35 to move through the thread, so that the replacement bracket 35 slides on the sliding bracket 32. The sliding bracket 32 ​​drives multiple molding molds 40 to move, thereby adjusting the positions of multiple molding molds 40, so that the molding mold 40 with a molding hole of a specified shape moves to the front end of the injection barrel 11. By starting the telescopic mechanism I 31, the molding mold 40 is buckled at the front end of the injection barrel 11;

[0053] like Figures 9 to 11As shown, there are molding dies 40 with molding holes of different shapes. Here, a molding die 40 with a circular molding hole is used as an example. The mounting sleeve 41 is mounted on the injection barrel 11, and the spiral shaft I 14 rotates to continuously push the plastic granule raw material into the molding die 40;

[0054] like Figure 12 to Figure 14 As shown, multiple groups of forming blocks 47 arranged side by side have forming holes of different sizes. According to the size of the plastic particles to be processed, the size of the forming holes of the outermost forming blocks 47 is adjusted. Here, three groups of forming blocks 47 are used as an example. The corresponding telescopic mechanisms II 43 are provided with six, the telescopic mechanisms III 44 are provided with six, and the cutting tools 45 are provided with six. The six cutting tools 45 are a pair of two. Fig.12 As shown, two cutting tools 45 at the same position can be interlocked with each other, and the shape formed by the combination of the two cutting holes is the same as the shape and size of the corresponding forming hole of the forming block 47;

[0055] When it is necessary to form plastic particles of the shape and size of the second forming block 47, the position of the third forming block 47 is adjusted so that the third forming block 47 slides on the sliding track 42, so that the third forming block 47 and the second pair of cutting tools 45 are separated, and a space sufficient for the plastic particles to fall is formed between the third forming block 47 and the second forming block 47. The positions of the plurality of forming blocks 47 can be adjusted by adjusting the sliding position of the threaded column 48 on the sliding track 42, and the positions of the forming blocks 47 are fixed by the locking nut.

[0056] Then, the plastic granule raw material is injected into the first group of forming blocks 47, and enters the second group of forming blocks 47 through the sides formed by the cutting holes on the two cutting tools 45 of the first group, and is squeezed and molded by the molding holes to form plastic granules of a specified size, and the second pair of telescopic mechanisms III 44 is started. The telescopic mechanism III 44 can be a hydraulic cylinder or an electric push rod, and the telescopic end of the telescopic mechanism III 44 drives the cutting tools 45 to move, so that the two cutting tools 45 move to the same side, and the plastic granule raw material is cut to form plastic granules;

[0057] Furthermore, when it is necessary to adjust the time for the plastic granule raw material to move in each corresponding group of molding blocks 47 and control the time for the plastic granules to cool and mold, the number of molding blocks 47 in each group is adjusted and the telescopic mechanism II43 is started at the same time. The telescopic mechanism II43 can be a hydraulic cylinder or an electric push rod. The telescopic end of the telescopic mechanism II43 drives the telescopic mechanism III44 to move, and the telescopic mechanism III44 drives the cutting tool 45 to move, so that the position of the cutting tool 45 is adjusted so that the cutting tool 45 is always in contact with the side of the molding block 47, thereby adjusting the time for the plastic granule raw material to move in each group of molding blocks 47.

Claims

1. A plastic granule preparation device, comprising a material injection barrel (11), characterized in that: The injection barrel (11) is fixedly connected to a mounting bracket (15), a telescopic mechanism I (31) is fixedly connected to the mounting bracket (15), a sliding bracket (32) is fixedly connected to the telescopic end of the telescopic mechanism I (31), a replacement bracket (35) is slidably connected to the sliding bracket (32), and a plurality of molding dies (40) are mounted on the replacement bracket (35), the molding dies (40) can be mounted on the injection barrel (11), and the molding hole shape of each molding die (40) is different.

2. A plastic granule preparation device according to claim 1, characterized in that: The molding die (40) comprises a mounting sleeve (41), the mounting sleeve (41) being capable of being mounted on the injection barrel (11), the mounting sleeve (41) being fixedly connected to a sliding track (42), the mounting sleeve (41) being provided with a plurality of telescopic mechanisms II (43) arranged in parallel in two rows, in each row of the plurality of telescopic mechanisms II (43), a first telescopic mechanism II (43) being fixedly connected to the mounting sleeve (41), a second telescopic mechanism II (43) being fixedly connected to the telescopic end of the first telescopic mechanism II (43), and a third telescopic mechanism II (43) being fixedly connected to the telescopic end of the first telescopic mechanism II (43). The three telescopic mechanisms II (43) are fixedly connected to the telescopic end of the second telescopic mechanism II (43), and so on. The telescopic end of each telescopic mechanism II (43) is fixedly connected to a telescopic mechanism III (44), and the telescopic end of each telescopic mechanism III (44) is fixedly connected to a cutting tool (45). Each cutting tool (45) is provided with a cutting hole. Two cutting tools (45) at the same position can contact and engage with each other. The sizes of the cutting holes on the multiple cutting tools (45) gradually decrease from the front to the back.

3. A plastic granule preparation device according to claim 2, characterized in that: The mounting sleeve (41) is fixedly connected to a mounting seat (46), and a plurality of groups of molding blocks (47) are arranged at the front end of the mounting seat (46). Each group of molding blocks (47) includes a plurality of molding blocks (47). Each molding block (47) is fixedly connected to a threaded column (48), and the threaded column (48) is slidably connected to the sliding track (42). A locking nut is threadedly connected to the threaded column (48), and the locking nut is used to lock the position of the molding block (47).

4. A plastic granule preparation device according to claim 3, characterized in that: Each forming block (47) is provided with a forming hole, the forming holes on the multiple groups of forming blocks (47) have the same shape, the forming holes on the multiple groups of forming blocks (47) have different sizes, the forming holes on the multiple forming blocks (47) in each group have the same shape and size, and the multiple groups of forming blocks (47) are arranged in sequence from front to back according to the size of the forming holes.

5. A plastic granule preparation device according to claim 4, characterized in that: The two cutting tools (45) at the first position from front to back can be inserted between the first group of multiple forming blocks (47), and the two cutting tools (45) at the second position can be inserted between the second group of multiple forming blocks (47), and so on. After the two cutting tools (45) are engaged, the shape of the two cutting holes formed is the same as the shape and size of the forming holes on each group of forming blocks (47).

6. A plastic granule preparation device according to claim 5, characterized in that: The forming hole is circular, quadrilateral or triangular.

7. A plastic granule preparation device according to claim 1, characterized in that: The injection barrel (11) is fixedly connected to a blanking pipe I (12), the injection barrel (11) is fixedly connected to a driving motor I (13), the output shaft of the driving motor I (13) is fixedly connected to a screw shaft I (14), the screw shaft I (14) is located in the injection barrel (11), the injection barrel (11) is fixedly connected to a feeding barrel (21), the feeding barrel (21) is fixedly connected to a blanking pipe II (22), the feeding barrel (21) is fixedly connected to a driving motor II (23), the output shaft of the driving motor II (23) is fixedly connected to a screw shaft II (24), the screw shaft II (24) is located in the feeding barrel (21).

8. A plastic granule preparation device according to claim 1, characterized in that: The sliding bracket (32) is rotatably connected to a screw rod (33), and a driving motor III (34) for driving the screw rod (33) to rotate is fixedly connected to the sliding bracket (32). The replacement bracket (35) is connected to the screw rod (33) through threads.

9. A plastic particle, characterized in that: The plastic particles are columnar, and the cross section of the columnar particles is triangular, quadrilateral or circular.

10. A process for preparing plastic particles using the plastic particle preparation device according to claim 1, characterized in that: The process includes the following steps: Step 1: a plurality of molding dies (40) having molding holes of different shapes are provided, and a molding dies (40) of a specified shape is mounted on the injection barrel (11); Step 2: injecting the molten plastic granule raw material into the molding die (40) through the injection cylinder (11); Step 3: The forming mold (40) extrude and mold the plastic particle raw material to form columnar plastic particles of different shapes.

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