High-dispersion low-shear extrusion screw

Abstract

The utility model discloses a high-dispersion low-shear extrusion screw which comprises a connecting section, a feeding section is arranged on the left side of the connecting section, a melting section is arranged on the left side of the feeding section, a homogenizing section is arranged on the left side of the melting section, an extrusion section is arranged on the left side of the homogenizing section, and a first connecting part is arranged in the middle of the right side of the feeding section. A second connecting part is arranged in the middle of the right side of the melting section, a third connecting part is arranged in the middle of the right side of the homogenizing section, and a plurality of material passing channels are arranged outside the melting section. By arranging the first connecting part, the second connecting part, the third connecting part and the material passing channel, the number of each section of screw rod can be increased through the first connecting part, the second connecting part and the third connecting part, so that the rotating distance of plastic on the extrusion screw rod is prolonged, and the material is more dispersed; and by arranging the material passing channel, shearing of the molten threads to the plastic material in the melting process is reduced.

Description

Technical Field

[0001] The utility model relates to the field of extrusion screws, in particular to a high-dispersion low-shear extrusion screw. Background Art

[0002] Plastic is a polymeric synthetic material primarily composed of synthetic resins (polymers) and often contains various additives, such as plasticizers, stabilizers, and colorants, to improve its performance and processing characteristics. Plastics are widely used in various fields due to their lightweight, corrosion-resistant, insulating, and moldable properties. Plastics can be categorized as thermoplastics and thermosetting plastics based on their thermal behavior. Thermoplastics soften when heated and harden upon cooling, a process that can be repeated. Thermosetting plastics, on the other hand, do not soften upon further heating after initial curing, exhibiting irreversible curing properties.

[0003] An extruder is a device that uses heat and a rotating screw to force plastic or other viscous materials through a specifically shaped die, producing a continuous product with a defined cross-sectional shape. The main components of an extruder include the screw, barrel, heating and cooling systems, a transmission system, a die head, and a die. The screw rotates within the barrel, conveying, melting, mixing, and pressurizing the material before it is extruded through the die head. The extrusion screw is the core component of the extruder, its primary functions including conveying, mixing, and homogenizing the material, as well as plasticizing it through the screw's rotation and the heating of the barrel. The extrusion screw propels the material through its thread structure, while simultaneously compressing, melting, and mixing the material by varying the depth and pitch of the threads in different areas of the screw. Extrusion screws are mostly fixed in length and pattern. During operation, it is impossible to control the material's rotational distance within a specified area while maintaining a constant speed, resulting in low material dispersion and a high shear rate on the plastic material as the threads rotate. Utility Model Content

[0004] The purpose of the utility model is to provide a high-dispersion low-shear extrusion screw, by arranging a first connecting portion on the right side of the feeding section, a second connecting portion on the right side of the melting section, a third connecting portion on the right side of the homogenizing section, and a feeding channel outside the melting section. This function can increase the number of screws in each section through the first connecting portion, the second connecting portion, and the third connecting portion, so as to extend the rotation distance of the plastic in the extrusion screw, thereby making the material more dispersed, and by arranging the feeding channel, the shearing of the molten thread on the plastic material is reduced during the melting process.

[0005] To achieve the above-mentioned purpose, a high-dispersion low-shear extrusion screw is provided, comprising a connecting section, a feeding section is provided on the left side of the connecting section, a melting section is provided on the left side of the feeding section, a homogenizing section is provided on the left side of the melting section, an extrusion section is provided on the left side of the homogenizing section, a first connecting portion is provided in the middle right side of the feeding section, the first connecting portion and the connecting section are threadedly connected, a second connecting portion is provided in the middle right side of the melting section, the second connecting portion and the feeding section are threadedly connected, a third connecting portion is provided in the middle right side of the homogenizing section, the third connecting portion and the melting section are threadedly connected, and a plurality of feed channels are provided on the outside of the melting section.

[0006] According to the high-dispersion low-shear extrusion screw, a plurality of melting threads are provided in an outer circumferential direction of the melting section, and the melting threads and the material transfer channels are provided correspondingly.

[0007] According to the high-dispersion low-shear extrusion screw, a fourth connecting portion is provided in the middle of the right side of the extrusion section, and the fourth connecting portion is threadedly connected to the homogenizing section. This arrangement enables the extrusion section to be detachable and replaceable.

[0008] According to the high-dispersion low-shear extrusion screw, a plurality of shaping channels are provided inside the extrusion section, and the shaping channels run through the extrusion section. This arrangement enables the extrusion of plastic products according to the shape of the shaping channels.

[0009] According to the high-dispersion low-shear extrusion screw, a reserved groove is provided in the middle of the right side of the connecting section, which is used to plug in the drive end of the motor.

[0010] According to the high-dispersion low-shear extrusion screw, a plurality of feeding threads are provided in an outer circumferential direction of the feeding section.

[0011] According to the high-dispersion low-shear extrusion screw, a plurality of extrusion threads are provided in an outer circumferential direction of the homogenizing section.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. By setting the first connecting part, the second connecting part, the third connecting part and the feeding channel, the first connecting part is set on the right side of the feeding section, the second connecting part is set on the right side of the melting section, the third connecting part is set on the right side of the homogenizing section, and the feeding channel is set outside the melting section. This function can increase the number of screws in each section through the first connecting part, the second connecting part and the third connecting part, so as to extend the rotation distance of the plastic in the extrusion screw, thereby making the material more dispersed, and by setting the feeding channel, the shearing of the molten thread on the plastic material is reduced during the melting process.

[0014] 2. By setting a connecting section, a reserved groove, an extrusion section, a fourth connecting part, and a shaping channel, by setting a connecting section on the right side of the feeding section, setting a reserved groove on the right side of the connecting section, setting an extrusion section on the left side of the homogenizing section, setting a fourth connecting part on the right side of the extrusion section, and setting a shaping channel inside the extrusion section, this function can make the extrusion screw easy to disassemble and replace through the connecting section and the reserved groove, and the extrusion section and the extrusion channel can make the extrusion section easy to replace. Plastic products of different shapes can be extruded according to different shaping channels to meet different requirements.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional structural diagram of the high-dispersion low-shear extrusion screw of the utility model;

[0018] Figure 2 This is a three-dimensional structural exploded diagram of the high-dispersion low-shear extrusion screw of the utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the connecting section and the extrusion section of the high-dispersion low-shear extrusion screw of the utility model;

[0020] Figure 4 This is a front cross-sectional view of the extrusion section of the high-dispersion, low-shear extrusion screw of the utility model.

[0021] In the figure: 1. Connecting section; 2. Feeding section; 3. Melting section; 4. Homogenizing section; 5. Extrusion section; 6. First connecting part; 7. Second connecting part; 8. Third connecting part; 9. Fourth connecting part; 10. Feeding thread; 11. Melting thread; 12. Feeding channel; 13. Extrusion thread; 14. Shaping channel; 15. Reserved groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the utility model.

[0023] See also Figures 1-4As shown, the utility model provides a technical solution: a high-dispersion low-shear extrusion screw, including a connecting section 1, the connecting section 1 is used to connect the motor output end of the extruder, a reserved groove 15 is provided in the middle of the right side of the connecting section 1, and a feeding section 2 is provided on the left side of the connecting section 1. The feeding section 2 is used to extrude plastic particles to the melting section 3 with the cooperation of the feeding thread 10, and a plurality of feeding threads 10 are provided in an annular direction on the outer side of the feeding section 2. A melting section 3 is provided on the left side of the feeding section 2. When the extruder heating component heats and melts the plastic, the melting section 3 stirs the plastic and conveys it to the homogenizing section 4. A homogenizing section 4 is provided on the left side of the melting section 3. The homogenizing section 4 is used to make the plastic material more delicate and dense with the cooperation of the extrusion thread 13, and extrude it to the extrusion section 5. The outer annular direction of the homogenizing section 4 is provided with a plurality of extrusion threads 13, and an extrusion section 5 is provided on the left side of the homogenizing section 4.

[0024] A first connecting portion 6 is provided in the middle of the right side of the feeding section 2, and the first connecting portion 6 is threadedly connected to the connecting section 1. A second connecting portion 7 is provided in the middle of the right side of the melting section 3, and the second connecting portion 7 is threadedly connected to the feeding section 2. A third connecting portion 8 is provided in the middle of the right side of the homogenizing section 4, and the third connecting portion 8 is threadedly connected to the melting section 3. A fourth connecting portion 9 is provided in the middle of the right side of the extrusion section 5, and the fourth connecting portion 9 is threadedly connected to the homogenizing section 4. A plurality of shaping channels 14 are provided inside the extrusion section 5, and the shaping channels 14 can extrude plastic products according to the shape of the shaping channels 14. The shaping channels 14 run through the extrusion section 5. A plurality of feed channels 12 are provided outside the melting section 3, and the feed channels 12 are used to reduce the shearing of the material by the melting thread 11. A plurality of melting threads 11 are provided circumferentially on the outside of the melting section 3, and the melting threads 11 and the feed channels 12 are correspondingly arranged.

[0025] Working principle: During installation, the reserved groove 15 on the connecting section 1 is plugged into the motor of the extruder, and the connecting section 1 and the feeding section 2 are threadedly connected by setting a first connecting part 6 on the right side of the feeding section 2, and the melting section 3 and the feeding section 2 are threadedly connected by setting a second connecting part 7 on the right side of the melting section 3, and the homogenizing section 4 and the melting section 3 are threadedly connected by setting a third connecting part 8 on the right side of the homogenizing section 4, and the extrusion section 5 and the homogenizing section 4 are threadedly connected by setting a fourth connecting part 9 on the right side of the extrusion section 5. Then, screws with different functions are added as needed. If the plastic material needs to be more uniform and delicate during extrusion, a homogenizing section 4 is added. When the extruder is working, the extrusion screw is driven to rotate by the rotation of the motor, and the plastic particles enter the feeding section 2 and are brought to the melting section 3 under the rotation of the feeding thread 10. After heating, stirring and melting, they enter the homogenizing section 4 through the feed channel 12 set in the middle of the melting thread 11, and are stirred in the homogenizing section 4 to make it more uniform and delicate, and then extruded through the shaping channel 14 on the extrusion section 5.

[0026] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-dispersion low-shear extrusion screw, comprising a connecting section (1), a feeding section (2) being provided on the left side of the connecting section (1), a melting section (3) being provided on the left side of the feeding section (2), a homogenizing section (4) being provided on the left side of the melting section (3), and an extrusion section (5) being provided on the left side of the homogenizing section (4), characterized in that: A first connecting portion (6) is provided in the middle of the right side of the feeding section (2), and the first connecting portion (6) is threadedly connected to the connecting section (1); a second connecting portion (7) is provided in the middle of the right side of the melting section (3), and the second connecting portion (7) is threadedly connected to the feeding section (2); a third connecting portion (8) is provided in the middle of the right side of the homogenizing section (4), and the third connecting portion (8) is threadedly connected to the melting section (3); and a plurality of feed channels (12) are provided on the outside of the melting section (3).

2. The high-dispersion low-shear extrusion screw according to claim 1, characterized in that: The outer circumference of the melting section (3) is provided with a plurality of melting threads (11), and the melting threads (11) and the material transfer channels (12) are provided correspondingly.

3. The high-dispersion low-shear extrusion screw according to claim 1, characterized in that: A fourth connecting portion (9) is provided in the middle portion of the right side of the extrusion section (5), and the fourth connecting portion (9) is threadedly connected to the homogenizing section (4).

4. The high-dispersion low-shear extrusion screw according to claim 1, characterized in that: A plurality of shaping channels (14) are provided inside the extrusion section (5), and the shaping channels (14) run through the extrusion section (5).

5. The high-dispersion low-shear extrusion screw according to claim 1, characterized in that: A reserved groove (15) is provided in the middle of the right side of the connecting section (1).

6. The high-dispersion low-shear extrusion screw according to claim 1, characterized in that: The outer circumference of the feeding section (2) is provided with a plurality of feeding threads (10).

7. The high-dispersion low-shear extrusion screw according to claim 1, characterized in that: The homogenizing section (4) is provided with a plurality of extrusion threads (13) in an outer circumferential direction.

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