Preparation device and process of recycled colored hollow polyester staple fiber for automotive interior

Abstract

The application discloses a kind of preparation device and process of recycled colored hollow polyester staple fiber for automotive interior, belong to polyester fiber preparation technical field, solve the problem that material is easy to jam, material disturbance is small, extrusion is not smooth in prior art, including storage tank, screw rod extruder, melt filter and spinning machine, the lower portion of storage tank and the hopper of screw rod extruder are funnel-shaped that gradually converges from top to bottom, and the outside of storage tank is provided with a clearing mechanism.The application can drive the plug rod by the extension and contraction of hydraulic cylinder and the expansion and contraction of air cushion when in use, effectively prevent the material from being jammed in the lower part of the storage tank or the upper part of the hopper, and the air cushion can supply air to the inside of the plug rod, thereby forming an air current at the opening of the plug rod, further improving the disturbance effect on the material.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of polyester fiber preparation, and in particular, relates to a preparation device and process of recycled colored hollow polyester staple fiber for automotive interior decoration. BACKGROUND

[0002] With the increasing production of automobiles, the demand for textiles is also increasing, and the development of the global automobile industry has brought a broad market for automotive textiles. Automotive interior fabrics are one of the emerging categories in the textile industry. Compared with traditional clothing textiles, they not only require aesthetic and decorative properties, but also require certain functionality, and have special requirements for appearance and material. Therefore, functional textiles have entered the automotive processing industry, and their use is increasing year by year. Colored hollow polyester staple fiber has good loft, luster effect, and soft hand feeling, and improves the air permeability, moisture absorption, and anti-pilling properties of fiber fabrics, and is widely used in automotive interiors.

[0003] At present, the polyester staple fiber spinning process includes the steps of drying, screw extrusion, spinning, and winding. After the material is dried, it needs to be stored in a special storage tank, and then input into the screw extruder. During the transfer process, the material may be stuck in the hopper, causing the screw extruder to idle and resulting in production interruption. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art and provide a preparation device and process of recycled colored hollow polyester staple fiber for automotive interior decoration, which prevents material sticking, greatly disturbs the material, and smoothly extrudes.

[0005] To achieve the above technical purpose, the preparation device and process of recycled colored hollow polyester staple fiber for automotive interior decoration adopted by the present application adopt the following technical solutions:

[0006] A preparation device of recycled colored hollow polyester staple fiber for automotive interior decoration comprises a storage tank, a screw extruder, a melt filter, and a spinning machine. The lower part of the storage tank and the hopper of the screw extruder are funnel-shaped and gradually taper from top to bottom. The discharge port of the storage tank is coaxially arranged with the feed port of the hopper.

[0007] A clearing mechanism is arranged on the outside of the storage tank. The clearing mechanism comprises a fixed plate, a movable plate, and a pair of insertion rods. The pair of insertion rods are fixed to the upper and lower ends of the same side of the movable plate and pass through the fixed plate. The pair of insertion rods are inserted into the lower part of the storage tank and the upper part of the hopper, respectively.

[0008] The driving mechanism is arranged between the movable plate and the fixed plate, and drives the movable plate to move towards the fixed plate and push the inserting rod.

[0009] Preferably, the fixed plate is arranged between the movable plate and the storage tank, and the outer side of the fixed plate is provided with a support for supporting the fixed plate.

[0010] Preferably, the fixed plate is provided with a pair of through holes, and the lower part of the storage tank and the upper part of the hopper are each provided with a pair of perforations, which are coaxially arranged one by one corresponding to the pair of through holes, and the inserting rod passes through the through holes and the perforations in sequence and is flush with the inner wall of the storage tank or the inside of the hopper.

[0011] Preferably, the outer diameter of the inserting rod is smaller than the inner diameter of the through hole and the inner diameter of the perforation, and the inner diameter of the through hole is the same as the inner diameter of the perforation.

[0012] Preferably, the outer side of the fixed plate is further provided with a vibration motor, which transmits excitation force to the fixed plate and the pair of inserting rods.

[0013] A preparation process of a recycled colored hollow polyester staple fiber for automotive interior decoration, comprising the following steps:

[0014] S1, add the recycled raw material into the black masterbatch and place it in a vacuum drum device for heating and drying, and then convey it into a storage tank after drying;

[0015] S2, adjust the size of the discharge port of the storage tank according to the operating speed of the screw extruder to control the discharge amount of the storage tank 1 to the screw extruder;

[0016] S3, the recycled raw material is melted by the screw, enters the reaction kettle through a filter, is impurity-removed by vacuumizing, and then enters the spinning machine through a second filter for spinning, and the ring blowing cooling starts at 500cm-800cm of the spinneret, and after spinning, the filament is stretched, the draft is 1.8 million denier 160m / min, the total draft is 4.0 times, the yarn is oiled, and then wound and cut to obtain the finished product.

[0017] Preferably, the recycled raw material in step S1 is a cloth head bubble material, and the viscosity is 0.56dl / g.

[0018] Preferably, the filter in step S3 and the second filter are melt filters, and the setting accuracy is 120 mesh and 150 mesh, respectively.

[0019] Preferably, the colored hollow polyester staple fiber prepared in step S3 has a strength of 2.5 cN / dtex, an elongation of 45%, a defect of 50 mg / 100 g, and a crimp number of 6 per 2.5 cm.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] In use, the plug rod is driven by the extension and retraction of the hydraulic cylinder and the expansion and contraction of the air cushion, effectively preventing the material from being stuck in the lower part of the storage tank or the upper part of the hopper, and the air cushion can supply air to the inside of the plug rod, thereby forming an air flow at the opening of the plug rod, further improving the disturbance effect on the material. At the same time, the exciting force generated by the vibration motor on the fixed plate and the plug rod can be transmitted to the material in contact with the plug rod, thereby preventing the material from forming a stable arch structure in the lower part of the storage tank or the upper part of the hopper to the greatest extent, and ensuring that the material can smoothly enter the screw extruder from the storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present application;

[0023] Figure 2 is a structural schematic diagram of the clearing mechanism in the present application;

[0024] Figure 3 is Figure 2 action state reference diagram.

[0025] In the figure: 1. storage tank; 10. perforation; 2. screw extruder; 20. hopper; 3. melt filter; 4. spinning machine; 5. clearing mechanism; 51. fixed plate; 511. support; 512. through hole; 52. movable plate; 53. plug rod; 530. opening; 54. hydraulic cylinder; 55. air cushion; 550. hose; 6. vibration motor. DETAILED DESCRIPTION

[0026] The application will be further described below in conjunction with the drawings and specific embodiments:

[0027] As Figures 1-3 shown, a device for preparing recycled colored hollow polyester staple fiber for automotive interiors comprises a storage tank 1, a screw extruder 2, a melt filter 3, and a spinning machine 4. The lower part of the storage tank 1 and the hopper 20 of the screw extruder are both funnel-shaped, tapering from top to bottom. The discharge port of the storage tank 1 is coaxially arranged with the inlet port of the hopper 20.

[0028] The storage tank 1 is provided with a blockage clearing mechanism 5 on its outer side. The blockage clearing mechanism 5 includes a fixed plate 51, a movable plate 52 and a pair of insert rods 53. The pair of insert rods 53 are fixed to the upper and lower ends of the same side of the movable plate 52 and pass through the fixed plate 51. The pair of insert rods 53 are respectively inserted into the lower part of the storage tank 1 and the upper part of the hopper 20.

[0029] A driving mechanism is provided between the movable plate 52 and the fixed plate 51. The driving mechanism drives the movable plate 52 to move toward the fixed plate 51 and pushes the insert rod 53. When the driving mechanism moves, the movable plate 52 moves toward the fixed plate 51. During this process, the insert rod 53 will continuously move toward the inside of the storage tank 1 or the hopper 20, thereby creating a disturbance to the material. This effectively prevents the material from forming a stable arched structure at the bottom of the storage tank 1 and the bottom of the hopper 20, thus ensuring that the material can move smoothly within the storage tank 1 and the hopper 20 under the disturbance of the insert rod 53.

[0030] The fixed plate 51 is located between the movable plate 52 and the storage tank 1. A bracket 511 is provided on the outer side of the fixed plate 51 to support the fixed plate 51. The bracket 511 can be set on the outer wall of the storage tank 1, the outer wall of the hopper 20, or the ground, as long as the fixed plate 51 is fixed under the support of the bracket 511.

[0031] The driving mechanism includes a pair of hydraulic cylinders 54, which are located between the movable plate 52 and the fixed plate 51. One end of each hydraulic cylinder 54 is connected to the inner side of the fixed plate 51, and the other end is connected to the inner side of the movable plate 52. When the push rod of the hydraulic cylinder 54 extends, the end of the insert rod 53 remains in contact with the inner wall of the storage tank 1 or the inner wall of the hopper 20. When the push rod of the hydraulic cylinder 54 retracts, the insert rod 53 moves into the interior of the storage tank 1 and the hopper 20 under the drive of the movable plate 52. In this way, the reciprocating movement of the insert rod 53 within the storage tank 1 and the hopper 20 can agitate the material, ensuring that the material can flow smoothly downwards.

[0032] The driving mechanism also includes an air cushion 55, and a pair of hydraulic cylinders 54 are located outside the air cushion 55. The two sides of the air cushion 55 are respectively connected to a fixed plate 51 and a movable plate 52. An external air source inflates the air cushion 55 or deflates it. When the air cushion 55 is in an inflated state, the push rod of the hydraulic cylinder 54 is extended, and the end of the insertion rod 53 is in contact with the inner wall of the storage tank 1 or the inner wall of the hopper 20. When the air cushion 55 is in a retracted state, the push rod of the hydraulic cylinder 54 is retracted, and the insertion rod 53 is inserted into the storage tank 1 or the hopper 20. In this way, with the assistance of the air cushion 55, the insertion rod 53 can be driven more smoothly.

[0033] The insertion rod 53 is hollow and is connected to the air cushion 55 by a retractable hose 550. A valve is provided at one end of the hose 550 near the air cushion 55. An opening 530 is provided at one end of the insertion rod 53 located in the storage tank 1 or hopper 20, and the opening 530 communicates with the interior of the insertion rod 53. When the air cushion 55 contracts and the insert rod 53 moves into the storage tank 1 and hopper 20, the valve is opened. The air in the air cushion 55 is forced into the insert rod 53 through the hose 550 under the pressure of the movable plate 52 and the fixed plate 51, and discharged outward through the opening 530 of the insert rod 53. Since the opening 530 of the insert rod 53 is inside the storage tank 1 and hopper 20 at this time, the air ejected from the opening 530 can form a high-speed airflow inside the storage tank 1 and hopper 20. This high-speed airflow creates an impact on the material, further preventing the material from getting stuck in the storage tank 1 and hopper 20, ensuring that the material can flow smoothly into the screw extruder and will not cause the screw extruder to stop due to material shortage.

[0034] The fixed plate 51 has a pair of through holes 512, and the lower part of the storage tank 1 and the upper part of the hopper 20 each have a pair of through holes 10. The pair of through holes 10 corresponds one-to-one with the pair of through holes 512 and is coaxially arranged. The insertion rod 53 passes through the through holes 512 and the through holes 10 in sequence and is flush with the inner wall of the storage tank 1 or the interior of the hopper 20. The outer diameter of the insertion rod 53 is smaller than the inner diameter of the through hole 512 and smaller than the inner diameter of the through hole 10. The inner diameter of the through hole 512 is the same as the inner diameter of the through hole 10. The arrangement of the through holes 10 and 512 ensures that the insertion rod 53 can move smoothly back and forth, achieving a disturbance effect on the material and ensuring reliable unblocking.

[0035] A vibration motor 6 is also provided on the outer side of the fixing plate 51. The vibration motor 6 transmits excitation force to the fixing plate 51 and a pair of insert rods 53. Under the action of the vibration motor 6, the excitation force of the insert rods 53 is transmitted to the material, thereby forming an oscillation effect on the material and significantly improving the anti-clogging effect.

[0036] This invention effectively prevents material blockage in the lower part of the storage tank 1 and the upper part of the hopper 20 by the disturbance effect of the insert rod 53, the blowing effect of the high-speed airflow input through the insert rod 53, and the oscillation effect of the excitation force transmitted through the insert rod 53, ensuring reliable unblocking and smooth material delivery to the screw extruder.

[0037] A process for preparing recycled colored hollow polyester staple fiber for automotive interiors includes the following steps:

[0038] S1. After adding the recycled raw material to the black masterbatch, it is placed in a vacuum drum equipment for heating and drying. After drying, it is transported to a storage tank.

[0039] S2. Adjust the size of the discharge port of the storage tank according to the operating speed of the screw extruder to control the discharge amount from the storage tank to the screw extruder;

[0040] S3. The recycled raw material is melted by the screw and enters the reactor through a first filter. After being vacuumed to remove impurities, it enters the spinning machine through a second filter for spinning. The spinning process begins at 500cm-800cm from the spinneret. After spinning, the filament is stretched at 160m / min for 1.8 million denier, with a total draw of 4.0 times. The filament is then wound and cut on the oil roller to obtain the finished product.

[0041] In step S1, the recycled raw material is fabric scrap with a viscosity of 0.56 dl / g.

[0042] In step S3, the first and second filters are melt filters, with precision settings of 120 mesh and 150 mesh, respectively.

[0043] The colored hollow polyester staple fiber obtained in step S3 has a strength of 2.5 cN / dtex, an elongation of 45%, a defect count of 50 mg / 100g, and a crimp count of 6 per 2.5 cm.

[0044] In summary, these are merely preferred embodiments of the present invention and are not intended to limit the scope of the invention. All equivalent variations and modifications made in accordance with the shape, structure, features, and spirit of the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An apparatus for preparing recycled colored hollow polyester staple fiber for automotive interiors, comprising a storage tank, a screw extruder, a melt filter, and a spinning machine, characterized in that: The lower part of the storage tank and the hopper of the screw extruder are both funnel-shaped, gradually narrowing from top to bottom. The discharge port of the storage tank and the inlet of the hopper are coaxially arranged. The storage tank is provided with a blockage removal mechanism on the outside. The blockage removal mechanism includes a fixed plate, a movable plate and a pair of insert rods. The pair of insert rods are fixed to the upper and lower ends of the same side of the movable plate and pass through the fixed plate. The pair of insert rods are respectively inserted into the lower part of the storage tank and the upper part of the hopper. A driving mechanism is provided between the movable plate and the fixed plate. The driving mechanism drives the movable plate to move toward the fixed plate and push the insertion rod. The driving mechanism includes a pair of hydraulic cylinders, which are located between the movable plate and the fixed plate. One end of the hydraulic cylinder is connected to the inner side of the fixed plate, and the other end of the hydraulic cylinder is connected to the inner side of the movable plate. The driving mechanism also includes an air cushion. The pair of hydraulic cylinders are located on the outer side of the air cushion. The two sides of the air cushion are connected to the fixed plate and the movable plate, respectively. An external air source inflates the air cushion or evacuates it. The insertion rod is hollow and is connected to the air cushion by a retractable hose. A valve is provided at the end of the hose near the air cushion. An opening is provided at the end of the insertion rod located in the storage tank or hopper, and the opening communicates with the interior of the insertion rod.

2. The apparatus for preparing recycled colored hollow polyester staple fiber for automotive interiors according to claim 1, characterized in that: The fixed plate is located between the movable plate and the storage tank, and a bracket is provided on the outside of the fixed plate to support the fixed plate.

3. The apparatus for preparing recycled colored hollow polyester staple fiber for automotive interiors according to claim 2, characterized in that: The fixed plate is provided with a pair of through holes, and the lower part of the storage tank and the upper part of the hopper are provided with a pair of through holes. The pair of through holes corresponds to the pair of through holes and is coaxially arranged. The insertion rod passes through the through holes and through holes in sequence and is flush with the inner wall of the storage tank or the inside of the hopper.

4. The apparatus for preparing recycled colored hollow polyester staple fiber for automotive interiors according to claim 3, characterized in that: The outer diameter of the insertion rod is smaller than the inner diameter of the through hole and smaller than the inner diameter of the perforation, and the inner diameter of the through hole is the same as the inner diameter of the perforation.

5. The apparatus for preparing recycled colored hollow polyester staple fiber for automotive interiors according to claim 3, characterized in that: A vibration motor is also provided on the outside of the fixed plate, and the vibration motor transmits excitation force to the fixed plate and a pair of insert rods.

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