Extruder for preparing polypropylene particle raw materials

Abstract

The extruder for polypropylene particle raw material preparation comprises an installation carrier, the installation carrier is of a cross structure, the top end of the installation carrier is in an L shape, and a threaded hole for installation of the installation carrier is formed in one side of the transverse part of the cross structure of the installation carrier. A machining mechanism is arranged on the other side of the transverse part of the cross-shaped structure of the mounting carrier, a plurality of sets of foot stools shaped like a Chinese character'ji 'are arranged on the surface of the machining mechanism, and the ends of the foot stools shaped like the Chinese character'ji' are fixedly connected with the other side of the longitudinal part of the cross-shaped structure of the mounting carrier. Through cooperative use of the receiving mechanism, the driving mechanism, the control carrier and the processing mechanism, the situation that the melting effect is poor and heating is insufficient due to different particle sizes of raw materials and non-uniform feeding is avoided, polypropylene particles can be continuously and efficiently produced, and therefore the working efficiency and the product quality are improved.

Description

Technical Field

[0001] This invention relates to the field of plastic extrusion technology, specifically to an extruder for preparing polypropylene granule raw materials. Background Technology

[0002] Polypropylene is a common synthetic resin, often used to make plastic products such as plastic bags, plastic containers, and plastic stationery. In the production of polypropylene plastic products, polypropylene granules are frequently used. These granules are produced by extruding raw materials through the pressure and shear force generated by an extruder, which allows the raw materials to be fully plasticized and uniformly mixed.

[0003] However, during the extrusion of polypropylene granules, uneven feeding due to raw material particle size issues can lead to insufficient heating and poor melting. Feeding too much raw material can result in excessive output. Too many fine particles can cause excessive melting, while excessively large particles can cause excessive resistance and create discontinuous layers within the extruder. This discontinuity results in discontinuous polypropylene extrusion. Furthermore, these layers create temperature differences within the extruder, leading to uneven melting of the polypropylene. Some raw materials may over-melt due to excessively high temperatures or fail to melt sufficiently due to insufficient temperatures, potentially resulting in reduced strength and toughness of the polypropylene granules and lower product quality. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: an extruder for preparing polypropylene granule raw materials, comprising a mounting carrier, the mounting carrier having a cross structure and an L-shaped top end, a threaded hole for mounting the mounting carrier being opened on one side of the transverse portion of the cross structure, a processing mechanism being provided on the other side of the transverse portion of the cross structure, a plurality of sets of I-shaped legs being provided on the surface of the processing mechanism, the ends of the I-shaped legs being fixedly connected to the other side of the longitudinal portion of the cross structure of the mounting carrier, a first drive motor being fixedly connected to the side of the surface of the mounting carrier near the processing mechanism via a support rod, the output end of the first drive motor being fixedly connected to the processing mechanism, a receiving mechanism being provided on the side of the surface of the mounting carrier near the processing mechanism, a drive mechanism being fixedly connected to the side of the surface of the mounting carrier near the receiving mechanism, and a controlling mechanism cooperating with the drive mechanism being provided on the surface of the mounting carrier, the controlling mechanism being located below the receiving mechanism.

[0005] Furthermore, the processing mechanism includes a processing cylinder mounted on a mounting carrier. One end of the processing cylinder is connected to an extrusion cone via a thread, and the other end of the processing cylinder is provided with an auger. The end of the auger is fixedly connected to the output end of a first drive motor. Several sets of second electric heating elements are provided inside the processing cylinder.

[0006] Furthermore, the receiving mechanism includes a bearing carrier mounted on the mounting carrier. The bearing carrier is composed of a cavity with a rectangular upper section and a trapezoidal lower section. Two sets of cutting and distributing rods are rotatably connected inside the bearing carrier. The surfaces of the two sets of cutting and distributing rods are provided with first mating teeth, and the two sets of first mating teeth mesh with each other.

[0007] Furthermore, the driving mechanism includes an arc-shaped carrier disposed on the surface of the mounting carrier, a second drive motor is fixedly connected inside the arc-shaped carrier, a mating roller is fixedly connected to the output end of the second drive motor, a belt tooth is drivenly connected to the surface of the mating roller, the inside of the belt tooth meshes with the surface of one of the cutting and distributing rods, and a lower feeding component is fixedly connected to the bottom of the surface of the arc-shaped carrier.

[0008] Furthermore, the lowering component has two sets of cylinders horizontally arranged inside. The output end of one of the cylinders is fixedly connected to a shaking housing. The chamber of the shaking housing is larger than the trapezoidal cavity at the bottom of the carrier. The output end of the other cylinder is fixedly connected to a carrier frame. The surface of the carrier frame is provided with several screening blocks. Each screening block is provided with a first electric heating element inside. The edges of the screening blocks and the carrier frame are rounded.

[0009] Furthermore, the control mechanism includes a control carrier disposed on the surface of the mounting carrier, a feeding component disposed at the bottom end of the control carrier, and a plurality of configuration inclined blocks fixedly connected to the upper surface of the control carrier, the number of configuration inclined blocks being greater than the number of the screening blocks.

[0010] Furthermore, the surface of the feeding assembly is provided with several sets of arc-shaped inclined blocks, and a sealing block is fixedly connected to the surface of the arc-shaped inclined blocks, and the sealing block closes the end of each configured inclined block.

[0011] Furthermore, a material passage cavity is fixedly connected to the top of the carrier, and the interior of the material passage cavity is connected to the interior of the carrier.

[0012] Furthermore, the interior of the feed chamber is provided with several sets of threaded holes arranged in a straight line, and the interior of the threaded holes is connected to the mounting carrier by bolts.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides an extruder for preparing polypropylene granules. Through the coordinated use of a receiving mechanism, a driving mechanism, a controlling carrier, and a processing mechanism, after the raw material enters the interior of the carrier, fine particles will fall to the bottom of the chamber, while larger particles will be processed into uniform particle sizes by a cutting and distributing rod. Then, they continue to descend into the interior of the shaking shell for correction and sieving. This allows the polypropylene granules to be shaken into the cavity formed by the inclined blocks, and the particles are corrected within a certain range by shaking. Subsequently, the bottom of the sieve block is sealed by the sealed cavity formed by the bottom of the two inclined blocks. The sieve block is driven by a cylinder to intermittently close and open the bottom of the cavity formed by the inclined blocks, so as to enable quantitative feeding and avoid poor melting effect and insufficient heating due to particle size issues. By using the combined action of the shaking shell, screening blocks, and inclined blocks, raw material particles can be conveyed to the interior of the processing mechanism by the arc-shaped inclined blocks after reaching a uniform maximum particle size. During feeding, since the temperature of the raw material particles is low when they first enter, and large particles melt slowly, their particle size is processed, and they are quantitatively fed and preheated before entering the processing cylinder. Some polypropylene raw materials may also have a certain amount of moisture, so the surface moisture is also treated to avoid discontinuity when the raw materials melt inside the device. This facilitates the continuous and efficient production of polypropylene particles, thereby improving the working efficiency of the device. Attached Figure Description

[0014] Figure 1 This is a first-view schematic diagram of the overall device of the present invention; Figure 2 This is a schematic diagram of the receiving mechanism and the material passage cavity installation guide structure of the present invention; Figure 3 This is a first-view structural diagram of the receiving mechanism of the present invention; Figure 4 This is a schematic diagram of the overall second-view structure of the device of the present invention; Figure 5 This is a schematic diagram of the drive mechanism and control mechanism of the present invention; Figure 6 This is a schematic diagram showing the disassembled structure of the driving mechanism and the control mechanism of the present invention; Figure 7 This is a schematic cross-sectional view of the driving mechanism and the control mechanism of the present invention; Figure 8 This is a schematic diagram of the overall third-view structure of the device of the present invention; Figure 9 This is a schematic diagram of the internal structure of the receiving mechanism of the present invention; Figure 10 This is a schematic diagram of the overall fourth-view cross-sectional structure of the device of the present invention.

[0015] In the diagram: 1. Mounting carrier; 2. Processing mechanism; 21. Processing cylinder; 22. Extrusion cone; 23. Screwdriver; 3. T-shaped support; 4. First drive motor; 5. Receiving mechanism; 51. Bearing carrier; 52. Cutting and separating rod; 53. First mating tooth; 6. Drive mechanism; 61. Arc-shaped carrier; 62. Second drive motor; 63. Mating roller; 64. Belt tooth; 65. Lowering component; 651. Cylinder; 652. Vibrating housing; 653. Carrier frame; 654. Screening block; 7. Control mechanism; 71. Controlling carrier; 72. Feeding assembly; 721. Arc-shaped inclined block; 73. Configuration inclined block; 8. Feeding cavity. Detailed Implementation

[0016] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0017] Combination Figures 1-10 The system includes a mounting carrier 1, which has a cross-shaped structure and an L-shaped top. One side of the horizontal portion of the cross-shaped structure of the mounting carrier 1 has threaded holes for mounting. A processing mechanism 2 is located on the other side of the horizontal portion of the cross-shaped structure of the mounting carrier 1. Several sets of I-shaped brackets 3 are provided on the surface of the processing mechanism 2. The ends of the I-shaped brackets 3 are fixedly connected to the other side of the vertical portion of the cross-shaped structure of the mounting carrier 1. A first drive motor 4 is fixedly connected to the side of the surface of the mounting carrier 1 near the processing mechanism 2 via a support rod. The output end of the first drive motor 4 is fixedly connected to the processing mechanism 2. A receiving mechanism 5 is provided on the side of the surface of the mounting carrier 1 near the processing mechanism 2. A drive mechanism 6 is fixedly connected to the side of the surface of the mounting carrier 1 near the receiving mechanism 5. A controlling mechanism 7, which cooperates with the drive mechanism 6, is also provided on the surface of the mounting carrier 1, located below the receiving mechanism 5.

[0018] The control mechanism 7 and the processing mechanism 2 are internally connected. Before the polypropylene raw material is fed into the material passage chamber 8 or fed into the interior by the conveyor belt, the top of the mounting carrier 1 is L-shaped so that a conveying device can be installed on its top if conditions permit, so that the polypropylene raw material can be conveyed better.

[0019] Combination Figures 2-10 The processing mechanism 2 includes a processing cylinder 21 mounted on the mounting carrier 1. One end of the processing cylinder 21 is connected to an extrusion cone 22 by a thread, and the other end of the processing cylinder 21 is provided with an auger 23. The blade-shaped auger 23 is infinitely close to but not in contact with the inner wall of the processing cylinder 21. The end of the auger 23 is fixedly connected to the output end of the first drive motor 4. Several sets of second electric heating elements are provided inside the processing cylinder 21.

[0020] The first drive motor 4 drives the auger 23 to work, heat-melt the polypropylene raw material and start to convey it to the extrusion cone 22, and finally extrude it through the port of the extrusion cone 22. If the extruder needs to extrude polypropylene of different specifications, the threaded extrusion cone 22 can be removed by rotating it for adaptation and replacement.

[0021] The receiving mechanism 5 includes a bearing carrier 51 mounted on the mounting carrier 1. The bearing carrier 51 is composed of a cavity with a rectangular upper section and a trapezoidal lower section. Two sets of cutting and separating rods 52 are rotatably connected inside the bearing carrier 51. The surfaces of the two sets of cutting and separating rods 52 are provided with first mating teeth 53, and the two sets of first mating teeth 53 mesh with each other.

[0022] The drive mechanism 6 includes an arc-shaped carrier 61 disposed on the surface of the mounting carrier 1. A second drive motor 62 is fixedly connected inside the arc-shaped carrier 61. A mating roller 63 is fixedly connected to the output end of the second drive motor 62. A belt tooth 64 is drivenly connected to the surface of the mating roller 63. The inside of the belt tooth 64 meshes with the surface of one of the cutting and separating rods 52. A lower feeding component 65 is fixedly connected to the bottom of the surface of the arc-shaped carrier 61.

[0023] The lowering component 65 has two sets of cylinders 651 horizontally arranged inside. The output end of one cylinder 651 is fixedly connected to a shaking housing 652. The chamber of the shaking housing 652 is larger than the trapezoidal cavity at the bottom of the carrier 51. The output end of the other cylinder 651 is fixedly connected to a carrier frame 653. The surface of the carrier frame 653 is provided with several screening blocks 654. Each screening block 654 is provided with a first electric heating element inside. The edges of the screening blocks 654 and the carrier frame 653 are rounded.

[0024] When the second drive motor 62 on the arc-shaped carrier 61 starts working, the plastic enters the material passage chamber 8 and processes the polypropylene particles that have entered the carrier 51 through the material passage chamber 8. The second drive motor 62 drives the mating roller 63 to start moving, which in turn drives the belt tooth 64 to work. When the belt tooth 64 is working, the two first mating teeth 53 set on the cutting and separating rod 52 start to operate.

[0025] The control mechanism 7 includes a control carrier 71 disposed on the surface of the mounting carrier 1. A feeding component 72 is disposed at the bottom end of the control carrier 71. Several sets of configuration inclined blocks 73 are fixedly connected to the upper surface of the control carrier 71. The number of configuration inclined blocks 73 is greater than the number of screening blocks 654 plus two.

[0026] The number of screening blocks 654 is increased by two to accommodate and seal the cavity formed by the two sets of inclined blocks 73. The bottom of the inclined blocks 73 is sealed by the carrier frame 653 and the screening blocks 654.

[0027] The cutting and separating rod 52 begins the first step of processing the particles. After processing, the particles fall into the trapezoidal cavity at the bottom of the carrier 51, and then slide into the vibrating housing 652. At this time, the vibrating housing 652 begins to work. The vibrating housing 652 is located above the inclined block 73. Due to the continuous movement of the vibrating housing 652, the polypropylene raw material will be guided and corrected as it falls.

[0028] The surface of the feeding assembly 72 is provided with several sets of arc-shaped inclined blocks 721. A sealing block is fixedly connected to the surface of the arc-shaped inclined block 721, and the sealing block closes the end of each configured inclined block 73.

[0029] When the raw material inside the feeding chamber 8 enters the carrier 51, the two first mating teeth 53 set on the cutting and separating rod 52 start to operate, so that the two cutting and separating rods 52 begin to perform the first step of processing on the raw material particles. Then, it will enter the drive mechanism 6 and the control mechanism 7 for processing. At this time, only the interior of the shaking shell 652 and the lower part of the carrier 51, which has a trapezoidal cross section, have a distance gap for the cylinder 651 to push, and space for moisture to be converted into steam by hot air. Then, the chamber below the drive mechanism 6 and the control mechanism 7 is a closed falling space. The second electric heating element set inside the processing cylinder 21 also preheats the interior of the processing cylinder 21. Then, the cylinders 651 above and below the lower feeding component 65 start to work, and the preheated raw material particles fall. The chambers inside the drive mechanism 6 and the control mechanism 7 have been completely preheated. The carrier frame 653 and the screening block 654 undergo lateral reciprocating motion due to the operation of the cylinder 651.

[0030] The top of the carrier 51 is fixedly connected to a material passage cavity 8, and the interior of the material passage cavity 8 is connected to the interior of the carrier 51.

[0031] The inside of the feeding chamber 8 is connected to the inside of the carrier 51 to prevent raw material particles from running out during feeding. The shape of the feeding chamber 8 is also designed to allow the raw materials to be transported to the inside of the carrier 51 in a timely manner.

[0032] The inside of the feeding cavity 8 has several sets of threaded holes arranged in a straight line, and the inside of the threaded holes is connected to the mounting carrier 1 by bolts.

[0033] When the feeding chamber 8 is in operation, in order to reduce excessive pressure on the carrier 51 and the vibration that may occur when polypropylene is fed, the corner of the feeding chamber 8 needs to be fixed with bolts.

[0034] Working principle: First, the entire device is vertically installed using the mounting carrier 1. After installation, raw materials are fed into the feeding chamber 8 or fed in via a conveyor belt. Then, the second drive motor 62 on the arc-shaped carrier 61 starts working, processing the raw material particles entering the carrier 51 from the feeding chamber 8. The second drive motor 62 drives the mating roller 63 to move, causing the mating roller 63 to drive the belt teeth 64. When the belt teeth 64 are working, the two first mating teeth 53 on the cutting and separating rods 52 start operating, causing the two cutting and separating rods 52 to begin the first step of processing the raw material particles. After processing, the particles fall into the trapezoidal cavity at the bottom of the carrier 51, and then slide into the vibrating housing 652. At this time, the vibrating housing 652 begins to work. The vibrating housing 652 is located above the inclined block 73. The continuous operation of 652 guides and corrects the polypropylene raw material as it falls into the cavity formed by the two inclined blocks 73. At the same time, the bottom of the inclined blocks 73 is sealed by the carrier frame 653 and the screening block 654. The first electric heating element inside the screening block 654 starts to work, and several sets of second electric heating elements inside the processing cylinder 21 also start to preheat the inside of the processing cylinder 21. Then, the cylinders 651 above and below the lowering component 65 also start to work, allowing the preheated polypropylene raw material to fall. The chambers inside the drive mechanism 6 and the control mechanism 7 are completely preheated. The carrier frame 653 and the screening block 654 reciprocate laterally due to the operation of the cylinder 651. Then, the polypropylene raw material falls onto the surface of the arc-shaped inclined block 721 and continues to slide down into the interior of the processing mechanism 2. Once inside the processing cylinder 21 of the processing mechanism 2, the first drive motor 4 starts to operate. The output end of the first drive motor 4 will drive the auger 23 to work, heat-melt the polypropylene raw material and start to transport it to the extrusion cone 22, and finally extrude the polypropylene granules through the port of the extrusion cone 22.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extruder for the preparation of polypropylene granulate raw material, comprising a mounting carrier (1), characterized in that: The mounting carrier (1) is in a cross structure, and the top end of the mounting carrier (1) is L-shaped, one side of the cross structure transverse part of the mounting carrier (1) is provided with a threaded hole for mounting the mounting carrier (1), the other side of the cross structure transverse part of the mounting carrier (1) is provided with a machining mechanism (2), the surface of the machining mechanism (2) is provided with a plurality of groups of only word-shaped supports (3), the end of the only word-shaped support (3) is fixedly connected with the other side of the cross structure longitudinal part of the mounting carrier (1), the surface of the mounting carrier (1) is fixedly connected with a first driving motor (4) on one side close to the machining mechanism (2) through a supporting rod, the output end of the first driving motor (4) is fixedly connected with the machining mechanism (2), the surface of the mounting carrier (1) is provided with a receiving mechanism (5) on one side close to the machining mechanism (2), the surface of the mounting carrier (1) is fixedly connected with a driving mechanism (6) on one side close to the receiving mechanism (5), the surface of the mounting carrier (1) is further provided with a control mechanism (7) matched with the driving mechanism (6), and the control mechanism (7) is below the receiving mechanism (5).

2. The extruder for preparing a polypropylene particle raw material according to claim 1, characterized in that: The machining mechanism (2) comprises a machining cylinder (21) arranged on the mounting carrier (1), one end of the machining cylinder (21) is threadedly connected with an extrusion cone (22), the other end of the machining cylinder (21) is provided with an auger (23), the end of the auger (23) is fixedly connected with the output end of the first driving motor (4), and the inside of the machining cylinder (21) is provided with a plurality of groups of second electric heating elements.

3. The extruder for preparing a polypropylene particle raw material according to claim 1, characterized in that: The receiving mechanism (5) comprises a bearing carrier (51) arranged on the mounting carrier (1), the bearing carrier (51) is composed of a cavity with a rectangular upper section and a trapezoidal lower section, two groups of cutting and distributing rods (52) are rotatably connected in the bearing carrier (51), the surfaces of the two groups of cutting and distributing rods (52) are provided with first matching teeth (53), and the two groups of first matching teeth (53) are engaged.

4. The extruder for preparing a polypropylene particle raw material according to claim 3, characterized in that: The driving mechanism (6) comprises a circular arc-shaped carrier (61) arranged on the surface of the mounting carrier (1), the inside of the circular arc-shaped carrier (61) is fixedly connected with a second driving motor (62), the output end of the second driving motor (62) is fixedly connected with a matching roller body (63), the surface of the matching roller body (63) is drivingly connected with a belt tooth (64), the inside of the belt tooth (64) is engaged with the surface of one of the cutting and distributing rods (52), and the bottom of the surface of the circular arc-shaped carrier (61) is fixedly connected with a lower conveying part (65).

5. The extruder for preparing a polypropylene particle raw material according to claim 4, characterized in that: The inside of the lower conveying component (65) is horizontally provided with two groups of air cylinders (651), one output end of the air cylinder (651) is fixedly connected with a shaking shell (652), the cavity of the shaking shell (652) is larger than the cavity of the lower part of the bearing carrier (51) with a trapezoidal cross section, the output end of the other air cylinder (651) is fixedly connected with a bearing frame (653), the surface of the bearing frame (653) is provided with a plurality of groups of screening blocks (654), the inside of each screening block (654) is provided with a first electric heating element, the edges of the screening block (654) and the bearing frame (653) are circular arc chamfers.

6. The extruder for preparing a polypropylene particle raw material according to claim 5, characterized in that: The control mechanism (7) comprises a control carrier (71) arranged on the surface of the mounting carrier (1), the bottom end of the control carrier (71) is provided with a discharging assembly (72), the upper part of the surface of the control carrier (71) is fixedly connected with a plurality of groups of configuration inclined blocks (73), the number of the configuration inclined blocks (73) is greater than that of the screening blocks (654).

7. The extruder for preparing a polypropylene particle raw material according to claim 6, characterized in that: The surface of the discharging assembly (72) is oppositely provided with a plurality of groups of arc-shaped inclined surface blocks (721), the surface of the arc-shaped inclined surface block (721) is fixedly connected with a sealing block, and the sealing block closes the end of each configuration inclined block (73).

8. The extruder for preparing a polypropylene particle raw material according to claim 3, characterized in that: The top end of the bearing carrier (51) is fixedly connected with a material passing cavity (8), the inside of the material passing cavity (8) is communicated with the inside of the bearing carrier (51).

9. The extruder for preparing a polypropylene particle raw material according to claim 8, characterized in that: The inside of the material passing cavity (8) is linearly arranged with a plurality of groups of threaded holes, the inside of the threaded hole is screwed with the mounting carrier (1) through a bolt.

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