A melt extruder for spinning nylon filament yarn

Abstract

The utility model relates to the technical field of melt extruder, especially a kind of melt extruder for polyamide filament spinning, including the barrel of melt extruder, the die head of melt extruder and multiple filter screens, filter screen installation pipe is equipped between the barrel of melt extruder and the die head of melt extruder, multiple the filter screen is installed in filter screen installation pipe in turn, both ends of filter screen installation pipe are movably installed with outer thread ring piece, the surface of the barrel of melt extruder and the die head of melt extruder is fixedly provided with inner thread sleeve, outer thread ring piece is screw-mounted in the inside of inner thread sleeve.This scheme needs to clean or replace filter screen, only need to rotate outer thread ring piece, after outer thread ring piece is spirally removed from inner thread sleeve, filter screen installation pipe can be separated from between the barrel of melt extruder and the die head of melt extruder, facilitate the operation of staff, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of melt extruder technology, and in particular to a melt extruder for nylon filament spinning. Background Technology

[0002] In the production of nylon filament, the raw materials required for nylon filament production need to be heated and melted before being conveyed to a melt extruder for processing into filaments. In the existing technology, because the molten raw materials contain particulate impurities, multiple layers of filter screens need to be installed between the screw conveyor and the die to prevent these impurities from clogging the extruder's die. These filter screens filter impurities from the molten raw materials. However, when a large amount of impurities adhere to the filter screen, the mesh of the filter screen becomes clogged with particulate impurities, thereby reducing the efficiency of the molten raw materials flowing through the filter screen. Therefore, the filter screens need to be cleaned or replaced regularly. However, the existing filter screens are installed inside the barrel, which requires the disassembly of two flanges between the die and the barrel. The two flanges are fixed together by multiple bolts. During operation, special tools are needed to remove the bolts from the flanges one by one, which increases the difficulty of operation, prolongs the working time, and reduces the efficiency of operation. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a melt extruder for spinning nylon filament.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a melt extruder for nylon yarn spinning, comprising a barrel of the melt extruder, a die of the melt extruder, and multiple filter screens. A filter screen mounting tube is provided between the barrel of the melt extruder and the die of the melt extruder. Multiple filter screens are sequentially installed in the filter screen mounting tube. External threaded rings are movably installed at both ends of the filter screen mounting tube. Internal threaded fittings are fixedly fitted on the surfaces of the barrel of the melt extruder and the die of the melt extruder. The external threaded rings are threadedly installed inside the internal threaded fittings.

[0005] Preferably, the inner side of the internal threaded assembly is bonded with a first rubber sealing gasket, and the side of the external threaded ring contacts the side of the first rubber sealing gasket.

[0006] Preferably, the surface of the external threaded ring is equipped with a plurality of actuating rods, and one end of each actuating rod is fitted with a heat insulation pad.

[0007] Preferably, a connecting ring is installed on the side of the external threaded ring, and an installation groove is formed on the surface of the filter screen mounting tube. The installation groove is set along the horizontal movement direction of the connecting ring. A fixing rod is installed inside the installation groove, and a slider is movably sleeved on the surface of the fixing rod. A connector is installed on the top of the slider, and one end of the connector extends above the connecting ring. A ball groove is formed on the outer circumferential surface of the connecting ring, and a universal ball is installed at one end of the connector. The ball of the universal ball slides along the inner wall of the ball groove.

[0008] Preferably, the inner circular surface of the connecting ring is provided with a groove, and a limiting block is installed on the surface of the slider, with one end of the limiting block extending into the groove.

[0009] Preferably, a plurality of connecting rods are installed through the sides of the plurality of filter screens, and the two ends of the connecting rods are installed on the inner surface of the filter screen mounting tube.

[0010] Preferably, both ends of the filter screen mounting tube are bonded with second rubber sealing gaskets, and the sides of the two second rubber sealing gaskets are in contact with the ends of the barrel and the die head of the melt extruder, respectively.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This solution provides a filter installation tube between the barrel and the die of the melt extruder. When cleaning or replacing the filter, simply rotate the external threaded ring. The external threaded ring then spirals out of the internal threaded assembly, allowing the filter installation tube to separate from the barrel and die of the melt extruder. Compared to using multiple bolts and flanges, this simplifies the removal and installation of the filter from the barrel, making it easier for workers and improving work efficiency. Attached Figure Description

[0013] Figure 1 This is the front view of a melt extruder for spinning nylon yarn according to this utility model;

[0014] Figure 2 This is a partial cross-sectional view of a melt extruder for spinning nylon yarn according to the present invention;

[0015] Figure 3 This is an enlarged structural diagram of section A of a melt extruder for spinning nylon yarn according to this utility model.

[0016] In the diagram: 1. Barrel of the melt extruder; 2. Internal threaded fitting; 3. Heat insulation pad; 4. Connector; 5. Universal ball bearing; 6. Ball bearing groove; 7. Die of the melt extruder; 8. Connecting ring; 9. Actuating rod; 10. External threaded ring; 11. Filter screen mounting tube; 12. Second rubber sealing gasket; 13. Sliding groove; 14. Sliding block; 15. Mounting groove; 16. Connecting rod; 17. Fixing rod; 18. Filter screen; 19. Limiting block; 20. First rubber sealing gasket. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0018] like Figure 1-3 The illustrated melt extruder for nylon filament spinning includes a barrel 1, a die 7, and multiple filter screens 18. A filter screen mounting tube 11 is provided between the barrel 1 and the die 7. Multiple filter screens 18 are sequentially installed in the filter screen mounting tube 11. Externally threaded rings 10 are movably mounted at both ends of the filter screen mounting tube 11. Internally threaded fittings 2 are fixedly fitted onto the surfaces of both the barrel 1 and the die 7. The externally threaded rings 10 are threadedly installed inside the internally threaded fittings 2. When cleaning or replacing the filter screens 18, simply rotate the externally threaded rings 10; the externally threaded rings 10 spirally move out of the internally threaded fittings 2, allowing the filter screen mounting tube 11 to be removed from the barrel 1 of the melt extruder. Separate the filter screen installation tube 11 and the die head 7 of the melt extruder. Then, screw the external threaded ring 10 out of the internal threaded assembly 2. The filter screen installation tube 11 can then be separated from the die head 7 of the melt extruder. At this point, the multi-layer filter screen 18 inside the filter screen installation tube 11 can be disassembled, which facilitates the removal of the filter screen 18 from the extruder. Conversely, during installation, first install the multi-layer filter screen 11 in sequence. Then, contact one end of the filter screen installation tube 11 with the end of the barrel 1 of the melt extruder. Rotate the external threaded ring 10. After the external threaded ring 10 is threaded into the internal threaded assembly 2, the die head 7 of the melt extruder can be fixed from the internal threaded assembly 2 through the external threaded ring 10, which facilitates the installation of the filter screen 18.

[0019] The inner side of the internal threaded assembly 2 is bonded with a first rubber sealing gasket 20, and the side of the external threaded ring 10 contacts the side of the first rubber sealing gasket 20. The first rubber sealing gasket 20 is used to seal the connection between the internal threaded assembly 2 and the external threaded ring 10.

[0020] Multiple actuating rods 9 are mounted on the surface of the external threaded ring 10. Each actuating rod 9 has a heat insulation pad 3 fitted on one end. The actuating rods 9 facilitate the application of torque force to the external threaded ring 10 by the operator. Since the heat insulation pad 3 is made of polyurethane material, when the operator touches the actuating rod 9, the operator can reduce the damage to the operator's hands from high temperature by holding the heat insulation pad 3, thus protecting the operator.

[0021] A connecting ring 8 is mounted on the side of the external threaded ring 10. A mounting groove 15 is formed on the surface of the filter screen mounting tube 11, and the mounting groove 15 is positioned along the horizontal movement direction of the connecting ring 8. A fixing rod 17 is installed inside the mounting groove 15. A slider 14 is movably fitted onto the surface of the fixing rod 17. A connecting member 4 is mounted on the top of the slider 14, with one end extending above the connecting ring 8. A ball groove 6 is formed on the outer circular surface of the connecting ring 8, and a universal ball 5 is mounted on one end of the connecting member 4. The balls of the universal ball 5 slide along the inner wall of the ball groove 6. A sliding groove 13 is formed on the inner circular surface of the connecting ring 8, and a limit switch is mounted on the surface of the slider 14. Block 19, one end of the limiting block 19 extends into the slide groove 13. As the external threaded ring 10 moves spirally, the external threaded ring 10 drives the connecting ring 8 to move synchronously. The connecting ring 8 rotates on the surface of multiple universal balls 5 through the ball groove 6. At the same time, the connecting ring 8 rotates on the surface of the limiting block 19 through the slide groove 13. Simultaneously, the connecting ring 8 moves horizontally. The connecting ring 8 drives the limiting block 19 and the connecting member 4 to move synchronously. The limiting block 19 and the connecting member 4 drive the slider 14 to slide on the surface of the fixed rod 17, which facilitates the external threaded ring 10 to be spirally removed from the internal threaded kit 2, improving the stability of the external threaded ring 10 during spiral movement.

[0022] Multiple connecting rods 16 are installed through the sides of multiple filter screens 18. The two ends of the connecting rods 16 are installed on the inner surface of the filter screen mounting tube 11. The connecting rods 16 are used to install and fix the multiple filter screens 18, thereby improving the stability of the multiple filter screens 18 installed in the filter screen mounting tube 11.

[0023] The filter screen mounting tube 11 has two ends bonded with second rubber gaskets 12. The sides of the two second rubber gaskets 12 are in contact with the ends of the barrel 1 of the melt extruder and the die 7 of the melt extruder, respectively. The two second rubber gaskets 12 increase the sealing between the filter screen mounting tube 11 and the barrel 1 of the melt extruder and the die 7 of the melt extruder, respectively.

[0024] In this design, the melt extruder consists of a barrel, a motor, a screw conveyor, a filter screen 18, and a die. The screw conveyor is installed inside the barrel, and the motor is located outside the barrel, with the motor's movable end connected to the screw conveyor. The filter screen is installed in a filter screen mounting tube 11, which is connected to both the die and the barrel. When extruding molten nylon filament, the molten filament is conveyed from the feed inlet at the top of the barrel to the inside. A heating mechanism is also installed outside the barrel to prevent the molten filament from solidifying. The screw conveyor transports the molten filament to the filter screen mounting tube 11, where it is filtered through multiple layers of filter screen 18. The filtered molten filament is then extruded from the die into filaments.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A melt extruder for spinning a nylon filament, comprising a barrel (1) of the melt extruder, a die (7) of the melt extruder, and a plurality of screens (18), characterized by, A filter screen mounting tube (11) is provided between the barrel (1) and the die (7) of the melt extruder. Multiple filters (18) are installed in the filter screen mounting tube (11) in sequence. Both ends of the filter screen mounting tube (11) are movably installed with external threaded rings (10). The surfaces of the barrel (1) and the die (7) of the melt extruder are fixedly fitted with internal threaded kits (2). The external threaded rings (10) are threadedly installed inside the internal threaded kits (2).

2. The melt extruder for spinning nylon filament according to claim 1, characterized in that, The inner side of the internal threaded assembly (2) is bonded with a first rubber sealing gasket (20), and the side of the external threaded ring (10) is in contact with the side of the first rubber sealing gasket (20).

3. The melt extruder for spinning nylon filament according to claim 1, characterized in that, The surface of the external threaded ring (10) is equipped with a plurality of actuating rods (9), and one end of each actuating rod (9) is fitted with a heat insulation pad (3).

4. The melt extruder for spinning nylon filament according to claim 1, characterized in that, A connecting ring (8) is installed on the side of the external threaded ring (10). An installation groove (15) is opened on the surface of the filter screen mounting tube (11). The installation groove (15) is set along the horizontal movement direction of the connecting ring (8). A fixing rod (17) is installed inside the installation groove (15). A slider (14) is movably sleeved on the surface of the fixing rod (17). A connector (4) is installed on the top of the slider (14). One end of the connector (4) extends above the connecting ring (8). A ball groove (6) is opened on the outer circular surface of the connecting ring (8). A universal ball (5) is installed on one end of the connector (4). The ball of the universal ball (5) slides along the inner wall of the ball groove (6).

5. A melt extruder for spinning nylon filament according to claim 4, characterized in that, The inner circular surface of the connecting ring (8) is provided with a groove (13), and a limiting block (19) is installed on the surface of the slider (14), with one end of the limiting block (19) extending into the groove (13).

6. A melt extruder for spinning nylon filament according to claim 1, characterized in that, Multiple connecting rods (16) are installed through the sides of the multiple filters (18), with the two ends of the connecting rods (16) installed on the inner surface of the filter mounting tube (11).

7. A melt extruder for spinning nylon filament according to claim 1, characterized in that, The filter screen mounting tube (11) has two ends of which are bonded with second rubber sealing gaskets (12). The sides of the two second rubber sealing gaskets (12) are in contact with the ends of the barrel (1) of the melt extruder and the die head (7) of the melt extruder, respectively.

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