A screw structure for an extruder

Abstract

The application relates to a screw structure for an extruder, belonging to the technical field of extruders, which comprises a screw body, a feeding section and a separating section are formed on the screw body, the feeding section and the separating section are sequentially and spacedly formed on the screw body, a feeding assembly is formed on one side of the screw body close to the feeding section, the feeding assembly is used for pushing materials, and a dispersing assembly is formed on one side of the screw body close to the separating section, and the dispersing assembly is used for dispersing materials. The application reduces the caking of particles in the melting process when the screw body conveys the textile materials, reduces the risk of subsequent spinneret blockage, and improves the processing efficiency of fiber filaments.

Description

Technical Field

[0001] This application relates to the field of extruder technology, and in particular to a screw structure for an extruder. Background Technology

[0002] Currently, an extruder is an industrial device that melts materials (such as plastics, rubber, or food ingredients) through heating and pressurization and forces them through a die to form continuous profiles. It mainly consists of a feeding system, screw and barrel, drive unit, die, and cooling and shaping mechanism. Its core function is to use a rotating screw to propel the material forward, causing it to mix and melt before extruding it through the die. After cooling and solidification, it produces fixed-section products such as pipes, sheets, and films. It is widely used in plastics processing, food manufacturing (such as noodles and puffed foods), and 3D printing, and features highly efficient continuous production.

[0003] In related technologies, the extruder heats and melts textile particles (such as polyester or nylon), then conveys them to the spinneret through a screw extrusion to form a fine stream of melt. The melt is then drawn into fiber filaments through processes such as cooling and solidification, stretching and heat setting, and finally wound into yarn bobbins.

[0004] Regarding the aforementioned technologies, the inventors believe that when the screw conveys textile particles, it is important to prevent the particles from easily agglomerating during the melting process, which could lead to blockage of the subsequent spinneret orifices and affect the processing efficiency of the fiber filaments. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a screw structure for an extruder, which solves the technical problem of preventing the particles from easily agglomerating during the melting process when the screw is conveying textile particles, thereby causing subsequent spinneret blockage and affecting the fiber processing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A screw structure for an extruder includes a screw body, on which a feeding section and a separating section are formed, the feeding section and the separating section being formed sequentially at intervals on the screw body, a feeding assembly being formed on the side of the screw body near the feeding section for pushing material, and a dispersing assembly being formed on the side of the screw body near the separating section for dispersing material.

[0007] Furthermore, the feeding assembly includes a feeding thread, which, when installed on the feeding section of the screw body, is spirally distributed on the feeding section.

[0008] Furthermore, a guide ridge is formed between the feed thread and the screw body, and the guide ridge is used to guide the material.

[0009] Furthermore, the dispersing component includes cutters, and a plurality of cutters are spaced apart in the separation section of the screw body.

[0010] Furthermore, a limiting groove is formed on the side of the screw body near the separating section, and a mounting plate is provided on the screw body. One side of the cutter passes through the mounting plate, and a pressure plate is provided on one side of the mounting plate. The pressure plate presses the cutter against the mounting plate, and a connecting bolt is provided on the pressure plate. One end of the connecting bolt passes through the pressure plate and the mounting plate in sequence, and a nut is provided at the end of the connecting bolt that passes through the mounting plate. One end of the nut is pressed against the mounting plate.

[0011] Furthermore, a limiting plate is provided at one end of the cutter, and the limiting plate abuts against the pressure plate and the mounting plate.

[0012] Furthermore, the mounting plate is provided with fixing bolts, one end of which passes through the mounting plate and the pressure plate in sequence, and the end of the fixing bolt passing through the pressure plate is connected to the screw body.

[0013] In summary, this application includes at least one of the following beneficial technical effects of the screw structure for an extruder: In use, the screw body is installed inside the extruder. As the screw body rotates, it conveys the textile material. The feeding component conveys the material in the feeding section on the screw body. When the material moves to the separation section of the screw body, the dispersion component disperses the material, reducing the agglomeration of particles during the melting process when the screw body conveys the textile material. This reduces the risk of subsequent spinneret blockage and improves the processing efficiency of the fiber filaments. The design of the feed thread and cutter improves the ease of conveying textile materials within the extruder. The cutter is pressed against the mounting plate by the pressure plate, and the connecting bolts and nuts are set. At the same time, the mounting plate is locked to the screw body by the fixing bolts, which improves the stability of the cutter on the screw body. Attached Figure Description

[0014] Figure 1 This application mainly provides an overall schematic diagram of a screw structure for an extruder; Figure 2 This is an exploded schematic diagram of the screw body structure, which is the main feature of this application. Figure 3 yes Figure 2 An enlarged view of part A; Figure 4 This is a schematic diagram of the mounting plate structure mainly provided in this application.

[0015] Reference numerals: 1. Screw body; 11. Feeding section; 12. Separation section; 2. Feeding assembly; 21. Feeding thread; 22. Guide rib; 3. Dispersion assembly; 31. Limiting groove; 32. Cutter; 33. Mounting plate; 34. Limiting plate; 35. Pressure plate; 36. Connecting bolt; 361. Nut; 37. Fixing bolt. Detailed Implementation

[0016] In order to make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0017] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0018] This application discloses a screw structure for an extruder.

[0019] Reference Figure 1 A screw structure for an extruder includes a screw body 1, on which a feeding section 11 and a separating section 12 are formed. A feeding assembly 2 is disposed on the side of the screw body 1 near the feeding section 11, and a dispersing assembly 3 is disposed on the side of the screw body 1 near the separating section 12. The textile material is conveyed under the action of the feeding assembly 2, and during the conveying process, the dispersing assembly 3 disperses the material.

[0020] Three feeding sections 11 and separating sections 12 are sequentially and spaced apart on the screw body 1. In operation, the feeding assembly 2 in the feeding section 11 propels the textile material, while the separating section 12 in the next section of the screw body 1 disperses the textile material, preventing it from clumping during transport. By alternately conveying the textile material through the feeding section 11 and the separating section 12, the conveying efficiency of the melted textile material in the extruder is improved.

[0021] In use, the feeding section 11 and the separating section 12 on the screw body 1 are arranged in the following order: feeding section 11 - separating section 12 - feeding section 11 - separating section 12 - feeding section 11 - separating section 12, which are spaced apart in sequence. The feeding section 11 conveys the textile material, and the separation section 12 separates any agglomerated textile material after it enters the separating section. This process is repeated to greatly improve the conveying and melting efficiency of the textile material by the screw body 1 and reduce the agglomeration of the textile material during the conveying process.

[0022] Reference Figures 2-3 The feeding assembly 2 includes a feeding thread 21, which corresponds to the feeding section 11 and is spirally arranged on the corresponding feeding section 11. The feeding thread 21 is integrally formed with the screw body 1. In use, as the screw body 1 rotates, the feeding thread 21 conveys the textile material, allowing the molten textile material to be pushed into the extruder.

[0023] Furthermore, a guide rib 22 is formed between the feed thread 21 and the screw body 1. The guide rib 22 guides the molten textile material, thereby reducing the accumulation of textile material between the feed thread 21 and the screw body 1.

[0024] Reference Figure 2 and Figure 4 A limiting groove 31 is provided on the side of the screw body 1 near the separation section 12. The limiting groove 31 is generally annular. The dispersing component 3 includes a cutter 32. Several cutters 32 are arranged at intervals in the corresponding limiting groove 31. In use, several cutters 32 cut the textile material. The cutters 32 cut the agglomerated textile material to reduce the agglomeration of the textile material during the melting process.

[0025] Reference Figure 4 To improve the ease of installation of the cutter 32 on the screw body 1, the dispersing assembly 3 includes a mounting plate 33. The mounting plate 33 has an arc-shaped cross-section and is positioned opposite each other on both sides of the screw body 1. The two mounting plates 33 are fastened together and fitted into the mounting groove of the screw body 1. In use, one end of each of the cutters 32 passes through the mounting plate 33, and the cutter 32 is provided with a limiting plate 34. During use, one end of the limiting plate 34 abuts against the mounting plate 33.

[0026] Furthermore, to improve the stability of the cutter 32 on the mounting plate 33, a pressure plate 35 is provided on one side of the mounting plate 33. In use, the pressure plate 35 presses the limiting plate 34 on the cutter 32 against the mounting plate 33. In addition, the pressure plate 35 is provided with connecting bolts 36, and several connecting bolts 36 are spaced apart on the pressure plate 35. One end of each connecting bolt 36 passes through the pressure plate 35 and the mounting plate 33 in sequence. The ends of the connecting bolts 36 that pass through the mounting plate 33 are all threaded with nuts 361, and one end of the nuts 361 is pressed against the mounting plate 33.

[0027] In use, the operator passes one end of several cutters 32 through the mounting plate 33, then presses the pressure plate 35 onto the mounting plate 33, and then passes one end of the connecting bolt 36 through the pressure plate 35 and the mounting plate 33 in sequence. Then, the operator rotates the nut 361 so that one end of the nut 361 is pressed against the mounting plate 33, thus locking the pressure plate 35 and the mounting plate 33 together.

[0028] To prevent relative rotation between the mounting plate 33 and the screw body 1 during rotation, which would affect the dispersion efficiency of the textile material, the mounting plate 33 is equipped with fixing bolts 37. Two fixing bolts 37 are spaced apart on the mounting plate 33, with one end of each bolt passing through the mounting plate 33 and the pressure plate 35. The end of the fixing bolt 37 passing through the pressure plate 35 is connected to the screw body 1. In use, the fixing bolts 37 lock the mounting plate 33, on which the cutter 32 is mounted, onto the screw body 1, preventing relative rotation between the mounting plate 33 and the screw body 1 when the screw body 1 rotates.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A screw structure for an extruder, comprising a screw body (1), characterized in that: The screw body (1) has a feeding section (11) and a separation section (12) formed thereon. The feeding section (11) and the separation section (12) are formed on the screw body (1) in sequence at intervals. A feeding assembly (2) is formed on the side of the screw body (1) near the feeding section (11). The feeding assembly (2) is used to push the material. A dispersing assembly (3) is formed on the side of the screw body (1) near the separation section (12). The dispersing assembly (3) is used to disperse the material. The dispersing component (3) includes a cutter (32), and several cutters (32) are provided at intervals in the separation section (12) of the screw body (1); A limiting groove (31) is provided on the side of the screw body (1) near the separation section (12). A mounting plate (33) is provided on the screw body (1). One side of the cutter (32) passes through the mounting plate (33). A pressure plate (35) is provided on one side of the mounting plate (33). The pressure plate (35) presses the cutter (32) against the mounting plate (33). A connecting bolt (36) is provided on the pressure plate (35). One end of the connecting bolt (36) passes through the pressure plate (35) and the mounting plate (33) in sequence. A nut (361) is provided at one end of the connecting bolt (36) that passes through the mounting plate (33). One end of the nut (361) presses against the mounting plate (33). One end of the cutter (32) is provided with a limiting plate (34), and the limiting plate (34) abuts against the pressure plate (35) and the mounting plate (33); The mounting plate (33) is provided with a fixing bolt (37), one end of which passes through the mounting plate (33) and the pressure plate (35) in sequence, and the end of the fixing bolt (37) passing through the pressure plate (35) is connected to the screw body (1).

2. The screw structure for an extruder according to claim 1, characterized in that: The feeding assembly (2) includes a feeding thread (21). When the feeding thread (21) is installed on the feeding section (11) of the screw body (1), the feeding thread (21) is spirally distributed on the feeding section (11).

3. The screw structure for an extruder according to claim 2, characterized in that: A guide ridge (22) is formed between the feed thread (21) and the screw body (1), and the guide ridge (22) is used to guide the material.

Images