Spinning device for producing high-strength polyester filament yarn

Abstract

The utility model relates to the technical field of polyester filaments, in particular to a spinning device for producing high-strength polyester filaments. The spinneret device for high-strength polyester filament yarn production comprises the shell and the movable spinneret plate arranged in the shell, and the spinneret plate is clamped in the shell through the clamping assembly, so that the spinneret plate is conveniently detached from the interior of the shell to be cleaned or replaced, the whole spinneret device is prevented from being replaced, waste is reduced, and the production efficiency is improved. The production cost of a factory is reduced; a plurality of spinneret orifices are formed in the surface of the spinneret plate, and each spinneret orifice is composed of a round hole and a special-shaped hole, so that production of the special-shaped polyester filament yarn can be realized; a plurality of hollow heating pipes are fixedly connected into the spinneret plate, flow guide holes are formed between the adjacent heating pipes, and the flow guide holes are communicated with the spinneret holes, so that the shaping effect of polyester yarns before the polyester yarns are sprayed out is improved, the quality of the polyester yarns after shaping is improved, and the practicability of the spinneret device is improved.

Description

Technical Field

[0001] This utility model relates to the field of polyester filament technology, specifically to a spinneret device for the production of high-strength polyester filament. Background Technology

[0002] Polyester filament is made from polyester fibers. Polyester is an important type of synthetic fiber and is the commercial name for polyester fiber in my country. It is a fiber-forming polymer—polyethylene terephthalate (PET)—obtained from purified terephthalic acid (PTA) or dimethyl terephthalate (DMT) and ethylene glycol (MEG) through esterification or transesterification and polycondensation reactions. The fiber is then spun and post-treated. Polyester filament refers to yarns with a length of over one kilometer, wound into a bundle.

[0003] In existing spinnerets specifically designed for producing high-strength polyester industrial filaments, the spinneret holes are mostly circular, with large gaps between them, making it impossible to adjust the size and shape of the spinneret holes according to actual needs. To address this issue, patent number CN202223126572.3 discloses a spinneret for producing polyester filaments, comprising a shell, an upper plate fixedly connected to the inner wall of the shell, several circular holes and straight holes on the surface of the upper plate, limit bolts threadedly connected to the inner walls of two limiting holes, a boss fixedly connected to the middle of the front section of the upper plate, a groove formed in the middle of the rear section of the upper plate, a middle plate at the front of the upper plate, a lower plate at the front end of the middle plate, a second filter layer rotatably connected to the inner wall of the shell at the rear end of the upper plate, and a first filter layer rotatably connected to the inner wall of the shell at the rear end of the second filter layer. However, this spinneret cannot spin out polyester filaments with irregular structures, and the filter sand filled in the filter layer is difficult to clean, causing blockage and affecting work efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art and to provide a spinneret device for the production of high-strength polyester filament.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A spinneret device for the production of high-strength polyester filament includes a housing and a movable spinneret plate disposed within the housing, and also includes a snap-fit ​​assembly. The spinneret plate is snapped into the interior of the housing by the snap-fit ​​assembly. The surface of the spinneret plate is provided with a plurality of spinneret holes, which are composed of circular holes and irregularly shaped holes. A plurality of hollow heating tubes are fixedly connected inside the spinneret plate, and guide holes are provided between adjacent heating tubes. The guide holes are connected to the spinneret holes.

[0006] Furthermore, the cross-section of the irregular hole can be one or more of the following shapes: straight, X-shaped, prismatic, rectangular, and T-shaped.

[0007] Furthermore, a heating channel is provided inside the housing. One side of the heating channel is connected to an air inlet pipe, and the other side is connected to an air outlet pipe. Both the air outlet pipe and the air inlet pipe are fitted with sealing sleeves that snap onto the housing.

[0008] Furthermore, a sealing ring that engages with the heating channel is fitted onto the surface of the heating tube.

[0009] Furthermore, the snap-fit ​​assembly includes a movable block movably disposed on the outer surface of the spinneret, and a matching limiting member abuts against the movable block.

[0010] Furthermore, the limiting component includes a pin, one end of which is provided with a wedge-shaped protrusion and the other end with a circular protrusion, the wedge-shaped surface of which abuts against the movable block.

[0011] Furthermore, a spring is provided on the surface of the pin, one end of which is fixedly connected to the wedge-shaped protrusion, and the other end is fixedly connected to the inner wall of the housing.

[0012] Furthermore, the housing has a slot that matches the pin.

[0013] Furthermore, the outer surface of the spinneret is provided with a limiting groove for the movement of the movable block, and the movable block is movably sleeved on the outer surface of the spinneret.

[0014] Furthermore, both the upper and lower ends of the spinneret are equipped with limiting blocks to restrict the movement of the movable block.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. This application provides a movable spinneret inside the housing, which is snapped into the housing by a snap-fit ​​assembly, thereby facilitating the removal of the spinneret from the housing for cleaning or replacement, thus avoiding the need to replace the entire spinneret device, reducing waste, and lowering the factory's production costs; and the surface of the spinneret is provided with a number of spinneret holes, which are composed of circular holes and irregular holes, thereby enabling the production of irregularly shaped polyester filaments.

[0017] 2. This application uses a heating tube to block the airflow and absorb the heat of the hot air before uniformly transferring it to the polyester yarn for plastic shaping. This improves the shaping effect of the polyester yarn before it is ejected, avoids direct contact between the hot air and the polyester yarn, improves the quality of the polyester yarn after shaping, and enhances the practicality of the spinning device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a spinneret used for the production of high-strength polyester filament in a preferred embodiment of the present invention;

[0019] Figure 2 This is an exploded view of a spinneret used in the production of high-strength polyester filament in a preferred embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional view of a spinneret used in the production of high-strength polyester filament in a preferred embodiment of the present invention.

[0021] Reference numerals: 1. Housing; 2. Spinneret; 3. Heating tube; 4. Guide hole; 5. Spinneret hole; 6. Heating channel; 7. Air inlet pipe; 8. Air outlet pipe; 9. Sealing sleeve; 10. Sealing ring; 11. Movable block; 12. Pin; 13. Spring. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0023] Reference Figures 1-3 As shown in the preferred embodiment of this utility model, a spinneret device for producing high-strength polyester filament includes a housing 1 and a movable spinneret 2 disposed within the housing. It also includes a snap-fit ​​assembly, which snaps the spinneret 2 into the housing, facilitating its removal for cleaning or replacement and avoiding the need to replace the entire spinneret device, thus reducing waste and lowering factory production costs. The spinneret 2 has several spinneret holes 5 on its surface, consisting of circular and irregularly shaped holes, enabling the production of irregularly shaped polyester filaments. Several hollow heating tubes 3 are fixedly connected inside the spinneret 2, with guide holes 4 between adjacent heating tubes 3. These guide holes 4 communicate with the spinneret holes 5, improving the shaping effect of the polyester filament before it is ejected, enhancing the quality of the shaped polyester filament, and improving the practicality of the spinneret device.

[0024] As a preferred embodiment of this utility model, it may also have the following additional technical features: the cross-section of the irregular hole is one or more of the following: straight, X-shaped, prismatic, rectangular, and T-shaped. This enables the processing of irregularly shaped polyester filaments.

[0025] In this embodiment, a heating channel 6 is provided inside the housing 1. One side of the heating channel 6 is connected to an air inlet pipe 7, and the other side is connected to an air outlet pipe 8. Both the air outlet pipe 8 and the air inlet pipe 7 are fitted with sealing sleeves 9 that snap onto the housing 1. Thus, by providing the air outlet pipe, hot air can be discharged, allowing airflow. By providing the sealing sleeves 9, hot air can be prevented from leaking from the interface gaps between the air inlet pipe 7 and the air outlet pipe 8 and the heating channel 6. The snap-fit ​​between the sealing sleeve 9 and the housing 1 can be achieved with existing technology, which will not be described in detail in this embodiment.

[0026] In this embodiment, a sealing ring 10 is fitted onto the surface of the heating tube 3, which engages with the heating channel 6. Therefore, by providing the sealing ring 10, hot air leakage from the interface gap between the spinneret 2 and the spinneret hole 5 and the housing 1 can be prevented.

[0027] In this embodiment, the snap-fit ​​assembly includes a movable block 11 movably disposed on the outer surface of the spinneret 2. The movable block 11 abuts against a matching limiting element, which includes a pin 12. One end of the pin 12 is provided with a wedge-shaped protrusion, and the other end is provided with a circular protrusion. The wedge-shaped surface of the wedge-shaped protrusion abuts against the movable block 11. A spring 13 is provided on the surface of the pin 12. The spring 13 is fixedly connected to the wedge-shaped protrusion, and the other end is fixedly connected to the inner wall of the housing 1. At the same time, a slot matching the pin 12 is provided on the housing 1. The diameter of the slot is smaller than the diameter of the circular protrusion. Thus, by squeezing the spinneret 2, the movable block 11 squeezes the wedge-shaped protrusion of the pin, and under the action of the spring 13, the pin 12 moves to the outside of the housing 1. When the movable block 11 moves to the limiting block at one end of the spinneret 2, its top abuts against the bottom of the wedge-shaped protrusion of the pin 12. Then the spinneret 2 is released, and under the action of the spring 13, the pin 12 drives the spinneret 2 to move downward, so that the spinneret 2 is disassembled from the housing. When it is necessary to install the spinneret 2 into the housing, the spinneret 2 is directly inserted into the housing 1, and then the spinneret 2 is inserted into the housing 1 by the cooperation of the pin 12, the spring 13, and the movable block 11.

[0028] In this embodiment, the outer surface of the spinneret 2 is provided with a limiting groove for the movement of the movable block 11. The movable block 11 is movably fitted onto the outer surface of the spinneret 1. Both the upper and lower ends of the spinneret 2 are provided with limiting blocks to restrict the movement of the movable block. This enables convenient assembly of the spinneret.

[0029] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0030] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A spinning device for producing high-strength polyester filaments, comprising a housing and a movable spinneret arranged in the housing, characterized in that: It also includes a snap-fit ​​assembly, in which the spinneret is snapped into the inside of the housing. The surface of the spinneret has a plurality of spinneret holes, which are composed of circular holes and irregular holes. A plurality of hollow heating tubes are fixedly connected inside the spinneret, and guide holes are provided between adjacent heating tubes. The guide holes are connected to the spinneret holes.

2. The spinning device for the production of high-strength polyester filaments according to claim 1, characterized in that: The cross-section of the irregular hole is one or more of the following: straight, X-shaped, prismatic, rectangular, and T-shaped.

3. The spinneret for producing high-strength polyester filament according to claim 1, characterized in that: The housing has a heating channel inside, with an air inlet pipe connected to one side and an air outlet pipe connected to the other side. Both the air outlet pipe and the air inlet pipe are fitted with sealing sleeves that snap onto the housing.

4. The spinning device for the production of high-strength polyester filaments according to claim 3, characterized in that: The surface of the heating tube is fitted with a sealing ring that engages with the heating channel.

5. The spinning device for the production of high-strength polyester filaments according to claim 1, characterized in that: The snap-fit ​​assembly includes a movable block movably disposed on the outer surface of the spinneret, and a matching limiting member abuts against the movable block.

6. The spinning device for the production of high-strength polyester filaments according to claim 5, characterized in that: The limiting component includes a pin, one end of which is provided with a wedge-shaped protrusion and the other end with a circular protrusion, the wedge-shaped surface of which abuts against the movable block.

7. The spinning device for the production of high-strength polyester filaments according to claim 6, characterized in that The pin surface is provided with a spring, one end of which is fixedly connected to the wedge-shaped protrusion, and the other end is fixedly connected to the inner wall of the housing.

8. The spinning device for the production of high-strength polyester filaments according to claim 6, characterized in that: The housing has a slot that matches the pin.

9. The spinning device for the production of high-strength polyester filaments according to claim 5, characterized in that: The outer surface of the spinneret is provided with a limiting groove for the movable block to move, and the movable block is movably sleeved on the outer surface of the spinneret.

10. The spinning device for the production of high-strength polyester filaments according to claim 9, characterized in that Both the upper and lower ends of the spinneret are provided with limiting blocks to restrict the movement of the movable block.

Images