Screw extrusion device for composite fibers

Abstract

The utility model discloses a screw extrusion device for composite fibers, which comprises a screw extruder body, and the screw extruder body is provided with an extrusion pipeline; a feeding hopper is arranged on the extrusion pipeline, the feeding hopper is communicated with an inner cavity of the extrusion pipeline, a supporting frame is arranged in the feeding hopper, a disturbance rod is arranged on the supporting frame, a driving assembly is further arranged on the supporting frame, and the driving assembly is matched with the disturbance rod, so that the disturbance rod shakes in the feeding hopper to prevent material blockage; the feeding device has the advantages that the disturbance rod driven by the driving assembly is arranged in the feeding hopper and shakes in the movable hole of the supporting frame in a non-rotating mode, the bridging or arching phenomenon possibly formed in the feeding process of raw materials is actively destroyed, blocking of the materials in the feeding hopper is effectively prevented through dynamic disturbance, and the feeding efficiency is improved. And the flowing uniformity and continuity of the raw materials entering the extrusion pipeline are obviously improved, so that the stable operation of the extrusion process is ensured.

Description

Technical Field

[0001] This utility model relates to a screw extrusion device for composite fibers. Background Technology

[0002] Composite fibers have received significant attention in textiles, materials, and other fields due to their superior performance and broad application prospects. As a key piece of equipment in composite fiber production, the screw extruder's core function is to melt, mix, homogenize, and extrude solid polymer raw materials. In the production process of composite fibers, it is typically necessary to thoroughly mix various components (such as polymer matrix, additives, and reinforcing fibers) before extrusion.

[0003] However, existing screw extrusion devices have significant problems in the feeding stage. Before various raw materials enter the extrusion pipe, bridging or arching is very likely to occur in the feed hopper. This is because powdery or fibrous materials form a stable arched structure in the conical area of ​​the feed hopper due to friction and cohesive forces, hindering the smooth flow of materials. This blockage problem prevents the raw materials from entering the extrusion pipe continuously and uniformly, which not only reduces production efficiency and increases downtime due to frequent cleaning operations, but more seriously, the intermittent and uneven supply of raw materials directly affects the stability of the melt extrusion process, resulting in poor component dispersion, uneven microstructure, and large fluctuations in mechanical properties of the final composite fiber product. In view of this, this utility model proposes a screw extrusion device for composite fibers to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a screw extrusion device for composite fibers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A screw extrusion device for composite fibers includes a screw extruder body, wherein the screw extruder body is provided with an extrusion pipe;

[0007] The extrusion pipe is equipped with a feed hopper, which is connected to the inner cavity of the extrusion pipe. A support frame is provided in the feed hopper, and a disturbance rod is provided on the support frame. A drive assembly is also provided on the support frame. The drive assembly cooperates with the disturbance rod to make the disturbance rod sway in the feed hopper to prevent material blockage.

[0008] As an improvement to the above technical solution, the support frame includes a support plate, on which two sets of support rods are symmetrically arranged, and the support rods are connected to the inner wall of the feed hopper;

[0009] The support plate has a movable hole, and the disturbance rod is disposed in the movable hole.

[0010] As an improvement to the above technical solution, the drive assembly includes two sets of fixing plates, which are symmetrically arranged on the support plate, and the disturbance rod is arranged between the two sets of fixing plates.

[0011] A drive rod is rotatably mounted on the fixed plate, a drive plate is mounted on the drive rod, and a movable rod is mounted on the drive plate. The movable rod cooperates with the disturbance rod.

[0012] As an improvement to the above technical solution, the movable rod and the driving rod are not coaxially arranged, the movable rod and the disturbance rod are rotatably arranged, and the movable rod rotates about the axis of the driving rod, causing the disturbance rod to sway in the movable hole.

[0013] As an improvement to the above technical solution, two sets of mounting plates are symmetrically arranged on the outer wall of the feed hopper, and drive servo motors are arranged on the mounting plates. The two sets of drive servo motors are respectively connected to two sets of drive rods.

[0014] As an improvement to the above technical solution, multiple sets of actuating sleeves are fixedly sleeved on the outer wall of the drive rod, and multiple sets of elastic actuating plates are evenly arranged on the outer wall of the actuating sleeves. The multiple sets of elastic actuating plates are arranged in a ring array with the axis of the actuating sleeve.

[0015] As an improvement to the above technical solution, a disturbance block is provided on the disturbance rod, and the disturbance block is provided with a first conical surface and a second conical surface.

[0016] As an improvement to the above technical solution, a support shell is provided on the support plate, and the fixing plate is disposed in the inner cavity of the support shell;

[0017] The support housing is provided with two sets of support sleeves, and the two sets of drive rods are respectively rotatably mounted on the two sets of support sleeves.

[0018] As an improvement to the above technical solution, both sets of support rods are provided with a first mounting hole;

[0019] The supporting housing is provided with a connecting plate, and the connecting plate is provided with a second mounting hole. The two sets of first mounting holes are respectively matched with the two sets of second mounting holes in terms of position and size. The first mounting holes and the second mounting holes are connected by bolts.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] By setting a disturbance rod driven by a drive component inside the feed hopper and making it swing non-rotationally in the movable hole of the support frame, the bridging or arching phenomenon that may be formed in the raw material during the feeding process is actively destroyed. This dynamic disturbance effectively prevents the material from blocking in the feed hopper, significantly improves the uniformity and continuity of the flow of raw material into the extrusion pipeline, and thus ensures the stable operation of the extrusion process.

[0022] The non-rotational shaking of the disturbance rod synchronously drives the relative displacement and cross-penetration of multiple raw materials, prompting different components to achieve preliminary premixing before entering the extrusion pipe. This action enhances the probability of physical contact between raw materials, breaks the local aggregation state of single materials, and helps to improve the uniformity of dispersion of each component in the subsequent melt extrusion process, thereby improving the microstructure consistency of composite fibers. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the feed hopper of this utility model;

[0025] Figure 3 This is a schematic diagram showing the positions of the disturbance rod and drive assembly of this utility model;

[0026] Figure 4 This is a schematic diagram of the disturbance rod of this utility model;

[0027] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A;

[0028] Figure 6 This utility model Figure 4 Enlarged structural diagram at point B;

[0029] Figure 7 This is a schematic diagram of the structure of the support shell of this utility model.

[0030] In the diagram: 10. Screw extruder body; 20. Extrusion pipe; 30. Feed hopper; 31. Mounting plate; 32. Drive servo motor; 40. Drive assembly; 41. Drive rod; 42. Fixed plate; 43. Drive plate; 44. Movable rod; 45. Actuating sleeve; 46. Elastic actuating plate; 50. Support frame; 51. Support plate; 52. Movable hole; 53. Support rod; 54. First mounting hole; 60. Disturbance rod; 70. Disturbance block; 71. First conical surface; 72. Second conical surface; 80. Support housing; 81. Support sleeve; 82. Second mounting hole; 83. Connecting plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example:

[0033] like Figure 1-7 As shown, this embodiment proposes a screw extrusion device for composite fibers, including a screw extruder body 10, wherein the screw extruder body 10 is provided with an extrusion pipe 20;

[0034] The extrusion pipe 20 is provided with a feed hopper 30, which is connected to the inner cavity of the extrusion pipe 20. A support frame 50 is provided in the feed hopper 30, and a disturbance rod 60 is provided on the support frame 50. A drive assembly 40 is also provided on the support frame 50. The drive assembly 40 cooperates with the disturbance rod 60 to make the disturbance rod 60 sway in the feed hopper 30 to prevent material blockage.

[0035] In this embodiment, when producing composite fibers, the raw materials are introduced into the feed hopper 30 so that the raw materials enter the extrusion pipe 20 to complete the extrusion process. When the raw materials are introduced into the feed hopper 30, the drive component 40 operates, and the drive component 40 drives the disturbance rod 60 to shake in the feed hopper 30 to prevent material blockage.

[0036] By setting a disturbance rod 60 driven by the drive assembly 40 in the feed hopper 30 and making it swing non-rotationally in the movable hole 52 of the support frame 50, the bridging or arching phenomenon that may be formed in the raw material during the feeding process is actively destroyed. This dynamic disturbance effectively prevents the material from blocking in the feed hopper 30, significantly improves the flow uniformity and continuity of the raw material entering the extrusion pipe 20, and thus ensures the stable operation of the extrusion process.

[0037] The non-rotational shaking of the disturbance rod 60 synchronously drives the relative displacement and cross-penetration of various raw materials, which promotes the preliminary premixing of different components before entering the extrusion pipe 20. This action enhances the probability of physical contact between raw materials, breaks the local aggregation state of single materials, and helps to improve the uniformity of dispersion of each component in the subsequent melt extrusion process, thereby improving the microstructure consistency of composite fibers.

[0038] Specifically, the support frame 50 includes a support plate 51, on which two sets of support rods 53 are symmetrically arranged, and the support rods 53 are connected to the inner wall of the feed hopper 30;

[0039] The support plate 51 has a movable hole 52, and the disturbance rod 60 is disposed in the movable hole 52.

[0040] In this embodiment, two sets of symmetrically arranged support rods 53 are rigidly connected to the inner wall of the feed hopper 30 to form a stable support structure, ensuring the structural strength and vibration resistance of the support plate 51 under dynamic working conditions.

[0041] Meanwhile, the movable hole 52 on the support plate 51 provides a limited space for the disturbance rod 60 to move, allowing the disturbance rod 60 to swing in a controllable amplitude within the feed hopper 30, while the hole wall constraint prevents its movement trajectory from deviating, thus ensuring the accuracy and reliability of the material disturbance action.

[0042] Specifically, the drive assembly 40 includes two sets of fixing plates 42, which are symmetrically arranged on the support plate 51, and the disturbance rod 60 is arranged between the two sets of fixing plates 42.

[0043] A drive rod 41 is rotatably mounted on the fixed plate 42, a drive plate 43 is mounted on the drive rod 41, and a movable rod 44 is mounted on the drive plate 43. The movable rod 44 cooperates with the disturbance rod 60.

[0044] Specifically, the movable rod 44 and the drive rod 41 are not coaxially arranged, the movable rod 44 and the disturbance rod 60 are rotatably arranged, and the movable rod 44 rotates about the axis of the drive rod 41, causing the disturbance rod 60 to sway in the movable hole 52.

[0045] In this embodiment, when the driving disturbance rod 60 shakes, the driving rod 41 rotates, thereby causing the driving plate 43 to rotate about the axis of the driving rod 41, which in turn causes the movable rod 44 to rotate about the axis of the driving rod 41, thus driving the disturbance rod 60 to shake in the movable hole 52.

[0046] The rotational motion is converted into the reciprocating swing of the disturbance rod 60 by the non-concentrically arranged drive plate 43 and movable rod 44 on the drive rod 41. When the movable rod 44 makes a circular motion with the axis of the drive rod 41 as the center, it forces the disturbance rod 60 to generate a multi-directional swaying trajectory (such as an ellipse or a figure-eight shape) in the movable hole 52, which greatly improves the coverage and disturbance range of the material.

[0047] Specifically, the outer wall of the feed hopper 30 is symmetrically provided with two sets of mounting plates 31, and the mounting plates 31 are provided with drive servo motors 32. The two sets of drive servo motors 32 are respectively connected to two sets of drive rods 41.

[0048] In this embodiment, the drive servo motor 32 can easily drive the drive rod 41 to rotate, thereby causing the disturbance rod 60 to sway.

[0049] Specifically, multiple sets of actuating sleeves 45 are fixedly sleeved on the outer wall of the drive rod 41, and multiple sets of elastic actuating plates 46 are evenly arranged on the outer wall of the actuating sleeve 45. The multiple sets of elastic actuating plates 46 are arranged in a ring array around the axis of the actuating sleeve 45.

[0050] In this embodiment, multiple sets of ring array elastic agitator plates 46 form a dynamic disturbance sector when the drive rod 41 rotates, which realizes synchronous axial and radial agitation of raw materials at different heights in the feed hopper 30. The deformation characteristics of the elastic agitator plates 46 enable them to produce adaptive bending when in contact with materials, which can effectively break up agglomerated raw materials and avoid fiber damage caused by hard collisions. It is especially suitable for the feeding process of brittle composite materials.

[0051] Of course, the elastic actuating plate 46 periodically contacts the support plate 51 during rotation, generating high-frequency mechanical vibration. This vibration is transmitted to the entire feed hopper 30 through the support frame 50. The vibration wave can destroy the adhesion between the raw material and the inner wall of the feed hopper 30, causing the adhering material to continuously fall off and eliminating the risk of material sticking on the feed path.

[0052] Specifically, the disturbance rod 60 is provided with a disturbance block 70, and the disturbance block 70 is provided with a first conical surface 71 and a second conical surface 72.

[0053] In this embodiment, the synergistic effect of the first conical surface 71 and the second conical surface 72 can guide the raw material to disperse axially and eliminate central accumulation.

[0054] Specifically, a support housing 80 is provided on the support plate 51, and the fixing plate 42 is disposed in the inner cavity of the support housing 80;

[0055] The support housing 80 is provided with two sets of support sleeves 81, and the two sets of drive rods 41 are respectively rotatably mounted on the two sets of support sleeves 81.

[0056] Specifically, both sets of support rods 53 are provided with first mounting holes 54;

[0057] The supporting housing 80 is provided with a connecting plate 83, and the connecting plate 83 is provided with a second mounting hole 82. The two sets of first mounting holes 54 are respectively matched with the two sets of second mounting holes 82 in position and size. The first mounting holes 54 and the second mounting holes 82 are connected by bolts.

[0058] In this embodiment, the support housing 80 isolates the drive component 40 from dust, moisture and raw materials in the feed hopper 30, effectively ensuring the normal operation of the drive component 40. Of course, the bolt connection between the first mounting hole 54 and the second mounting hole 82 facilitates the maintenance of the drive component 40 inside the support housing 80.

[0059] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw extrusion device for composite fibers, characterized in that: Includes a screw extruder body (10), wherein the screw extruder body (10) is provided with an extrusion pipe (20); The extrusion pipe (20) is provided with a feed hopper (30), which is connected to the inner cavity of the extrusion pipe (20). A support frame (50) is provided in the feed hopper (30), and a disturbance rod (60) is provided on the support frame (50). A drive assembly (40) is also provided on the support frame (50). The drive assembly (40) cooperates with the disturbance rod (60) to make the disturbance rod (60) sway in the feed hopper (30) to prevent material blockage.

2. The screw extrusion device for composite fibers according to claim 1, characterized in that: The support frame (50) includes a support plate (51), on which two sets of support rods (53) are symmetrically arranged, and the support rods (53) are connected to the inner wall of the feed hopper (30); The support plate (51) has a movable hole (52), and the disturbance rod (60) is disposed in the movable hole (52).

3. The screw extrusion device for composite fibers according to claim 2, characterized in that: The drive assembly (40) includes two sets of fixing plates (42), which are symmetrically arranged on the support plate (51), and the disturbance rod (60) is arranged between the two sets of fixing plates (42). A drive rod (41) is rotatably mounted on the fixed plate (42), a drive plate (43) is mounted on the drive rod (41), and a movable rod (44) is mounted on the drive plate (43). The movable rod (44) cooperates with the disturbance rod (60).

4. The screw extrusion device for composite fibers according to claim 3, characterized in that: The movable rod (44) and the drive rod (41) are not coaxially arranged. The movable rod (44) and the disturbance rod (60) are rotatably arranged. The movable rod (44) rotates about the axis of the drive rod (41), causing the disturbance rod (60) to sway in the movable hole (52).

5. The screw extrusion device for composite fibers according to claim 4, characterized in that: The outer wall of the feed hopper (30) is symmetrically provided with two sets of mounting plates (31), and the mounting plates (31) are provided with drive servo motors (32). The two sets of drive servo motors (32) are respectively connected to two sets of drive rods (41).

6. The screw extrusion device for composite fibers according to claim 4, characterized in that: Multiple sets of actuating sleeves (45) are fixedly sleeved on the outer wall of the drive rod (41). Multiple sets of elastic actuating plates (46) are uniformly arranged on the outer wall of the actuating sleeve (45). The multiple sets of elastic actuating plates (46) are arranged in a ring array with the axis of the actuating sleeve (45).

7. The screw extrusion device for composite fibers according to claim 1, characterized in that: The disturbance rod (60) is provided with a disturbance block (70), and the disturbance block (70) is provided with a first conical surface (71) and a second conical surface (72).

8. The screw extrusion device for composite fibers according to claim 3, characterized in that: A support shell (80) is provided on the support plate (51), and the fixing plate (42) is provided in the inner cavity of the support shell (80); The support housing (80) is provided with two sets of support sleeves (81), and the two sets of drive rods (41) are respectively rotatably mounted on the two sets of support sleeves (81).

9. The screw extrusion device for composite fibers according to claim 8, characterized in that: Both sets of support rods (53) are provided with first mounting holes (54); The supporting housing (80) is provided with a connecting plate (83), and the connecting plate (83) is provided with a second mounting hole (82). The two sets of first mounting holes (54) are respectively matched with the two sets of second mounting holes (82) in position and size. The first mounting holes (54) and the second mounting holes (82) are connected by bolts.

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