Production system and method of elastic high-linear-density fibers

Abstract

The invention discloses an elastic high linear density fiber production system and method.The elastic high linear density fiber production system comprises a screw extruder, a metering spinning device, a cooling water tank, a water absorption roller set, a stretching machine and a yarn dividing winding roller set, the metering spinning device is arranged at an outlet of the screw extruder and located above the left side of the cooling water tank, and the water absorption roller set is arranged on the right side of the stretching machine; the water absorption roller set is arranged above the right side of the cooling water tank in a communicating mode, the stretcher is located on the right side of the cooling water tank, and the yarn separation winding roller set is located on the right side of the stretcher. According to the invention, the method of actively rotating and conveying the high-elastic fiber filaments in the whole production process is adopted, so that the defect that the filaments vibrate and then are doubled in the winding process after the filaments are formed is well overcome.

Description

Technical Field

[0001] The invention belongs to the technical field of fiber material manufacturing, and in particular relates to a production system and method for elastic high-linear-density fibers. Background Art

[0002] Elastic fibers (such as spandex elastic fibers) have very small linear density, and their spinning is usually formed by side-blowing cooling. However, if Japanese polystyrene modified high elastomer melt is used to produce elastic fibers, especially special fiber production, the linear density of a single fiber is as high as more than one thousand dtex, and side-blowing cannot achieve the cooling effect at all.

[0003] At present, the fibers ejected from the spinneret are generally cooled by a cooling water trough. Since the melt viscosity of the elastomer after melting is low and the melt density is lower than that of cooling water, if the elastic fiber is cooled by a cooling water trough, the tension of the fiber filaments between the spinneret and the water surface of the cooling water trough is very small. There are dozens or even more than a hundred fiber filaments extruded from the spinneret, and the fiber filaments are easily adhered to each other. Summary of the invention

[0004] In order to solve the above technical problems existing in the prior art, the present invention provides a production system and method of elastic high linear density fiber which adopts cooling water tank cooling and can avoid the adhesion of fiber strands.

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a production system for elastic high-linear density fibers, comprising a screw extruder, a metering spinneret, a cooling water trough, a water suction roller group, a stretching machine and a filament winding roller group, the metering spinneret is arranged at the outlet of the screw extruder, the metering spinneret is located above the left side of the cooling water trough, an underwater filament stretching roller group is arranged in the cooling water trough, the water suction roller group is arranged above the right side of the cooling water trough, the stretching machine is located on the right side of the cooling water trough, and the filament winding roller group is located on the right side of the stretching machine.

[0006] The filament stretching roller group includes a left filament stretching roller located directly below the metering spinneret and a right filament stretching roller located directly below the water absorption roller group. The left filament stretching roller and the right filament stretching roller are respectively connected to a driving motor.

[0007] The stretching machine adopts a five-roller stretching machine or a seven-roller stretching machine; the rotation speed of the water-absorbing roller group and the stretching machine is between 60 and 200 meters per minute.

[0008] The wire separation winding roller group includes several electric wire separation rollers arranged at intervals from top to bottom, each electric wire separation roller is provided with a pressure roller on the left side, each electric wire separation roller is provided with several wire guide wheels on the right side, and a winding drum is correspondingly arranged under each wire guide wheel.

[0009] The number of the spinneret holes of the spinneret plate of the metering spinneret device is in the range of 10 to 100 holes, the number of the wire grooves on the outer circle of the left wire drawing roller is 20 to 100, and the rotation speed of the left wire drawing roller is between 20 and 100 m / min.

[0010] The rotation speed of the right wire drawing roller is between 25 and 150 m / min, and the number of wire grooves on the outer circle of the right wire drawing roller is between 20 and 100.

[0011] The rotation speed of the electric wire separation roller is between 100 and 250 m / min. The electric wire separation roller is 20 mm higher than the first wire guide wheel adjacent to the right, the first wire guide wheel is 20 mm lower than the second wire guide wheel adjacent to the right, the second wire guide wheel is 20 mm lower than the third wire guide wheel adjacent to the right, and so on. The wire guide wheels increase from left to right with a height difference of 20 mm.

[0012] A production method of elastic high linear density fiber adopts an elastic high linear density fiber production system, comprising the following processes: a screw extruder sprays an elastic slice melt material through a spinneret of a metering spinneret device, the sprayed elastic fiber bundle enters a cooling water tank downward, is actively stretched by a left filament stretching roller, and then bypasses a right filament stretching roller to the right; driven by a driving motor, the left filament stretching roller and the right filament stretching roller respectively actively stretch the elastic fiber filaments, so that the elastic fiber bundle has a certain tension in the water, so that each elastic fiber filament is kept in a linear stretching state to avoid mutual adhesion; the elastic fiber filaments cooled in the cooling water tank are then passed through a water absorption roller group, the water absorption roller group absorbs the water carried by the elastic fiber filaments, and then the elastic fiber filaments enter a stretching machine to complete the linear density shaping of the fiber filaments; then the elastic fiber filaments are passed through a plurality of equally divided wire strips of electric filament separation rollers, and the elastic fiber filaments on each electric filament separation roller bypass a guide wheel one by one, and are finally wound onto a winding drum.

[0013] By adopting the above technical solution, compared with the prior art, the present invention has the following technical effects: 1) The present invention adopts a left filament stretching roller and a right filament stretching roller arranged in a water tank, which are respectively connected to a driving motor. The driving motor drives the filament stretching roller to actively rotate, and maintains constant tension for the elastic fiber bypassing the filament stretching roller, which effectively solves the problem of several fiber strips sticking together during spinning.

[0014] 2) Since the high-density elastomer fiber has a small modulus and large friction, the tension deviation of the currently used passive wire separation conveying roller is very large. The present invention adopts a method of actively rotating and conveying high-elastic fiber yarns throughout the production process to effectively solve the problem of yarn vibration and subsequent yarn paralleling during the winding process after the yarn is formed.

[0015] 3) The speeds of the left filament stretching roller, the right filament stretching roller, the water absorption roller group, the stretching machine, and the electric filament roller gradually increase from left to right, which can ensure that the elastic fiber strips of the entire production line are always in a tensioned state, thereby ensuring that the elastic fiber strips will no longer stick together.

[0016] 4) The height of the guide wheel gradually increases from left to right for the fiber filaments separated to the right by the same electric wire separation roller, so as to avoid adhesion when winding the filaments onto the winding drum.

[0017] 5) The water absorption roller group includes a water absorption towel roller and a lower squeezing roller. After the elastic fiber yarn passes around the water absorption towel roller, the water absorption towel roller absorbs the water on the elastic fiber yarn, and the water is squeezed out by the squeezing roller and then falls into the cooling water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0019] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings and examples.

[0020] like Figure 1 As shown, a production system of elastic high linear density fiber of the present invention includes a screw extruder 1, a metering spinneret 2, a cooling water trough 3, a water suction roller group, a stretching machine 5 and a filament winding roller group, the metering spinneret 2 is arranged at the outlet of the screw extruder 1, the metering spinneret 2 is located above the left side of the cooling water trough 3, an underwater filament stretching roller group is arranged in the cooling water trough 3, the water suction roller group is arranged above the right side of the cooling water trough 3, the stretching machine 5 is located on the right side of the cooling water trough 3, and the filament winding roller group is located on the right side of the stretching machine 5.

[0021] The filament stretching roller group includes a left filament stretching roller 6 located directly below the metering spinneret 2 and a right filament stretching roller 7 located directly below the water-absorbing roller group. The left filament stretching roller 6 and the right filament stretching roller 7 are respectively connected to a driving motor 8.

[0022] The stretching machine 5 is a five-roll stretching machine 5 or a seven-roll stretching machine 5; the rotation speed of the water-absorbing roller group and the stretching machine 5 is between 60 and 200 m / min.

[0023] The filament separation winding roller group includes a plurality of electric filament separation rollers 9 spaced apart from top to bottom, a pressure roller 10 is provided on the left side of each electric filament separation roller 9 (to increase the wrap angle of the elastic fiber yarn passing around the electric filament separation roller 9), a plurality of guide wheels 11 are provided on the right side of each electric filament separation roller 9, and a winding drum 12 is provided under each guide wheel 11.

[0024] The number of spinning holes of the spinneret of the metering spinneret 2 is in the range of 10 to 100 holes, the number of wire grooves on the outer circle of the left wire drawing roller 6 is 20 to 100; the rotation speed of the left wire drawing roller 6 is between 20 and 100 m / min.

[0025] The rotation speed of the right wire drawing roller 7 is between 25 and 150 m / min, and the number of wire grooves on the outer circle of the right wire drawing roller 7 is between 20 and 100.

[0026] The rotation speed of the electric wire separation roller 9 is between 100 and 250 m / min. The electric wire separation roller 9 is higher than the first wire guide wheel 1120 mm adjacent to the right, the first wire guide wheel 11 is lower than the second wire guide wheel 1120 mm adjacent to the right, the second wire guide wheel 11 is lower than the third wire guide wheel 1120 mm adjacent to the right, and so on. The wire guide wheels 11 increase from left to right with a height difference of 20 mm.

[0027] A method for producing elastic high-density fibers, which is carried out using an elastic high-density fiber production system, includes the following steps: a screw extruder 1 ejects an elastic slice melt material through a spinneret of a metering spinneret 2, and the ejected elastic fiber bundle 13 enters a cooling water tank 3 downward, is first actively stretched by a left filament stretching roller 6, and then goes right around a right filament stretching roller 7. Driven by a drive motor 8, the left filament stretching roller 6 and the right filament stretching roller 7 respectively actively stretch the elastic fiber bundle 13, so that the elastic fiber bundle 13 is 3 has a certain tension in the water, so that each elastic fiber yarn is kept in a straight stretched state to avoid mutual adhesion. After being cooled in the cooling water tank 3, the elastic fiber yarn passes through the water absorption roller group, which absorbs the water carried by the elastic fiber yarn, and then the elastic fiber yarn enters the stretching machine 5 to complete the linear density setting of the fiber yarn; then the elastic fiber yarn 14 passes through the equally divided wire strips of multiple electric wire separation rollers 9, and the elastic fiber yarn 14 on each electric wire separation roller 9 passes around the wire guide wheel 11 one by one, and is finally wound on the winding drum 12.

[0028] Compared with the prior art, the present invention has the following technical effects: 1) The present invention adopts a left filament stretching roller 6 and a right filament stretching roller 7 arranged in a cooling water tank 3, which are respectively connected to a driving motor 8. The driving motor 8 drives the filament stretching rollers to actively rotate, and maintains constant tension for the elastic fibers bypassing the filament stretching rollers, which effectively solves the problem of several fiber filaments sticking together during spinning.

[0029] 2) Since the high-density elastomer fiber has a small modulus and large friction, the tension deviation of the currently used passive wire separation conveying roller is very large. The present invention adopts a method of actively rotating and conveying high-elastic fiber yarns throughout the production process to effectively solve the problem of yarn vibration and subsequent yarn paralleling during the winding process after the yarn is formed.

[0030] 3) The speeds of the left filament stretching roller 6, the right filament stretching roller 7, the water absorption roller group, the stretching machine 5, and the electric filament roller 9 gradually increase from left to right, which can ensure that the elastic fiber strips of the entire production line are always in a tensioned state, thereby ensuring that the elastic fiber strips will no longer stick together.

[0031] 4) The height of the guide wheel 11 gradually increases from left to right for the fiber filaments separated to the right by the same electric wire separation roller 9, so as to avoid adhesion when winding the filaments onto the winding drum 12.

[0032] 5) The water-absorbing roller group includes a water-absorbing towel roller 4 (a towel cover is provided on the outside of the roller) and a water-squeezing roller 15 at the bottom. After the elastic fiber yarn passes around the water-absorbing towel roller 4, the water-absorbing towel roller 4 absorbs the water on the elastic fiber yarn. The water-squeezing roller 15 is parallel to and in contact with the water-absorbing towel roller 4. The water is squeezed out by the water-squeezing roller 15 and then falls into the cooling water tank 3.

[0033] The above embodiments illustrate the basic principles and features of the present invention, but the above only illustrates the preferred embodiments of the present invention and is not limited to the embodiments. Under the inspiration of this patent, a person skilled in the art can make many forms of deformation and improvement without departing from the scope of protection of the present invention and the claims, which are all within the protection scope of the present invention. Therefore, the patent and protection scope of the present invention shall be subject to the attached claims.

Claims

1. A production system for elastic high linear density fibers, characterized in that: It includes a screw extruder, a metering spinneret, a cooling water trough, a water suction roller group, a stretching machine and a filament winding roller group. The metering spinneret is arranged at the outlet of the screw extruder, the metering spinneret is located above the left side of the cooling water trough, an underwater filament stretching roller group is arranged in the cooling water trough, the water suction roller group is arranged above the right side of the cooling water trough, the stretching machine is located on the right side of the cooling water trough, and the filament winding roller group is located on the right side of the stretching machine.

2. The production system of elastic high linear density fiber according to claim 1, characterized in that: The filament stretching roller group includes a left filament stretching roller located directly below the metering spinneret and a right filament stretching roller located directly below the water absorption roller group. The left filament stretching roller and the right filament stretching roller are respectively connected to a driving motor.

3. The production system of elastic high linear density fiber according to claim 2, characterized in that: The stretching machine adopts a five-roller stretching machine or a seven-roller stretching machine; the rotation speed of the water-absorbing roller group and the stretching machine is between 60 and 200 meters per minute.

4. The production system of elastic high linear density fiber according to claim 3, characterized in that: The wire separation winding roller group includes several electric wire separation rollers arranged at intervals from top to bottom, each electric wire separation roller is provided with a pressure roller on the left side, each electric wire separation roller is provided with several wire guide wheels on the right side, and a winding drum is correspondingly arranged under each wire guide wheel.

5. The production system of elastic high linear density fiber according to claim 4, characterized in that: The number of the spinneret holes of the spinneret plate of the metering spinneret device is in the range of 10 to 100 holes, the number of the wire grooves on the outer circle of the left wire drawing roller is 20 to 100, and the rotation speed of the left wire drawing roller is between 20 and 100 m / min.

6. The production system of elastic high linear density fiber according to claim 5, characterized in that: The rotation speed of the right wire drawing roller is between 25 and 150 m / min, and the number of wire grooves on the outer circle of the right wire drawing roller is between 20 and 100.

7. The production system of elastic high linear density fiber according to claim 5, characterized in that: The rotation speed of the electric wire separation roller is between 100 and 250 m / min. The electric wire separation roller is 20 mm higher than the first wire guide wheel adjacent to the right, the first wire guide wheel is 20 mm lower than the second wire guide wheel adjacent to the right, the second wire guide wheel is 20 mm lower than the third wire guide wheel adjacent to the right, and so on. The wire guide wheels increase from left to right with a height difference of 20 mm.

8. A method for producing elastic high linear density fibers, using the elastic high linear density fiber production system according to claim 7, characterized in that: The invention comprises the following processes: a screw extruder sprays the elastic slice melt material through the spinneret of the metering spinneret device, and the sprayed elastic fiber bundle enters the cooling water tank downward, is first actively stretched by the left filament stretching roller, and then bypasses the right filament stretching roller to the right; driven by the driving motor, the left filament stretching roller and the right filament stretching roller respectively actively stretch the elastic fiber filaments, so that the elastic fiber bundle has a certain tension in the water, so that each elastic fiber filament is kept in a linear stretching state to avoid mutual adhesion; the elastic fiber filaments cooled in the cooling water tank are then passed through a water absorption roller group, which absorbs the moisture carried by the elastic fiber filaments, and then the elastic fiber filaments enter the stretching machine to complete the linear density shaping of the fiber filaments; then the elastic fiber filaments are passed through the equally divided wire strips of multiple electric filament separation rollers, and the elastic fiber filaments on each electric filament separation roller bypass the guide wheel one by one, and are finally wound onto the winding drum.

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