TW202142757A - Device and method for manufacturing fiber structure with adjustable density capable of manufacturing a fiber structure with elasticity and supporting force, and locally adjusting the density of the fiber structure - Google Patents

Abstract

The present invention relates to a device and method for manufacturing a fiber structure with adjustable density. The method includes: a fiber ejection step for using at least one fiber ejection tube to eject fibers downward to form a columnar fiber structure; a molding step for using a molding mechanism to draw the fiber structure and the fibers in the fiber structure toward both sides under negative pressure; and a shaping step for using a shaping mechanism to first heat the fiber structure for bonding the fibers to each other, and then perform cooling and shaping. The present invention is able to form fibers that are originally loose into an internal structure, that is, a fiber structure with elasticity and supporting force, and also locally adjust the density of the fiber structure so as to adjust the supporting force and flexibility of the fiber structure, thereby achieving the purpose of easily manufacturing a fiber structure with supporting force.

Description

Device and method for manufacturing fiber structure with adjustable density

The invention relates to a manufacturing device and method of a fiber structure, in particular to a manufacturing device and method that can adjust the density of the fiber structure according to requirements during the manufacturing process

The fibers are in the form of filaments and are divided into natural fibers and man-made fibers. Among them, a fiber assembly formed by a large number of fibers, because the fibers are not connected to each other, and the arrangement is non-directional and disorderly, so the structure is loose and cannot form a support effect in a specific direction, so it is generally used The amount of fiber per unit volume is controlled to adjust the support and softness of the fiber assembly.

In addition, another prior art method for making a supportive fiber assembly is to first make the fiber assembly into a sheet-shaped cotton pad, and then repeatedly flex the cotton pad to form a wave shape, thereby Form a structure that can provide support. However, in the aforementioned prior art method of making a fiber assembly with a degree of support, in addition to first making the fiber assembly into a sheet-shaped cotton pad, and then repeatedly bending the cotton pad into a wave shape, it also needs to be wavy The two sides of the cotton pad are connected with cloth pieces to fix the bent shape of the cotton pad. The manufacturing steps are quite complicated and need to be further improved.

In view of the aforementioned problems in the prior art, the purpose of the present invention is to provide a device and method for manufacturing a fiber structure with adjustable density, thereby manufacturing a fiber structure with an internal structure, that is, a supporting force, and can be adjusted by The density of the fiber structure adjusts the supporting force.

In order to achieve the above-mentioned creative purpose, the technical means adopted by the present invention is to make a manufacturing device of an adjustable-density fiber structure including: At least one fiber ejection pipe, each fiber ejection pipe is connected to a high-pressure hot air supply system and has a downward nozzle that can eject fibers downward; A forming mechanism, which includes two forming conveyor belts, the two forming conveyor belts are arranged at intervals on both sides of the path from the feeding end to the discharging end and are parallel to each other, and each forming conveyor belt is provided with a plurality of air extraction holes And connect with a negative pressure system, which creates a suction effect at each suction hole; A certain type mechanism, which is connected with the forming mechanism and includes a certain type conveyor belt and two shaped air boxes, the two shaped air boxes are arranged at intervals on both sides of the path from the feeding end to the discharging end. The front half of the box close to the forming mechanism is a heating section connected to a high-temperature gas supply system, and the second half of the box close to the discharge end is a cooling section connected to a low-temperature gas supply system.

Each of the aforementioned fiber ejection pipes can be controlled to move along a horizontal plane perpendicular to the ejection direction of the fiber.

The aforementioned shaping conveyor belt can be provided with a plurality of perforations, one of the aforementioned shaping mechanism's shaping mechanism can be installed in the shaping conveyor belt with a certain type of air box, and the other shaping air box can be installed on the opposite side of the shaping conveyor belt.

The two shaping bellows of the aforementioned shaping mechanism can be respectively arranged on both sides of the path from the feeding end to the discharging end, and the shaping conveyor belt can be arranged between the two shaping bellows and the discharging end.

The aforementioned forming mechanism can further include two adjusting conveyor belts, the two adjusting conveyor belts are arranged at intervals on both sides of the path from the feeding end to the discharging end and are parallel to each other.

The temperature of the hot air provided by the aforementioned high-pressure hot air supply system connected to the fiber ejection pipe is higher than the melting point of the fiber by more than 20°C.

The aforementioned at least one fiber ejection pipe can include a plurality of fiber ejection pipes arranged at intervals.

In order to achieve the above-mentioned creative purpose, another technical method adopted by the present invention is to make a manufacturing method of an adjustable density fiber structure include: A fiber ejection step: use at least one fiber ejection tube to eject fibers downward, and the fiber ejection tube heats the ejected fibers to bond the fibers to each other, so that the fibers ejected from each fiber ejection tube form columnar fibers Structure A forming step: evacuating air on opposite sides of the fiber structure to draw the fiber structure and the fibers in it toward both sides; The shaping step: firstly heat the fiber structure to make the fibers adhere to each other at the overlapping position, and then cool the fiber structure to fix the overall shape of the fiber structure.

In the aforementioned fiber ejection step, the at least one fiber ejection tube can eject fibers downward while rotating.

In the aforementioned fiber ejection step, the speed at which the fiber ejection tube ejects the fibers can be controlled to adjust the density of the formed fiber structure.

In the aforementioned fiber ejection step, the rotation speed of the fiber ejection tube can be controlled to adjust the density of the formed fiber structure.

With the above-mentioned design, the manufacturing device and method of the adjustable-density fiber structure of the present invention can make originally loose fibers into a fiber structure with elasticity and support force, and the manufacturing device can As long as the finished fiber structure is further cut, it can be put into a cloth cover for sale and use. Moreover, the manufacturing device can locally adjust the density of the fiber structure to adjust the fiber structure. Supporting power and softness, so as to achieve the purpose of simply making a supporting fiber structure.

Referring to Figure 1, the manufacturing device of the adjustable density fiber structure of the present invention is provided with at least one fiber ejection tube 10, a molding mechanism 20, and a certain shape in sequence between a feed end and a discharge end. Institution 30.

Each fiber ejection tube 10 has a nozzle 11 facing downwards, and the fibers can be ejected downward from the nozzle 11, and the ejected fibers can be long fibers and/or short fibers.

Wherein, each fiber ejection tube 10 is connected to a high-pressure hot air supply system, and the hot air provided by the high-pressure hot air supply system heats the fibers in the fiber ejection tube 10 to melt the surface of the fibers to generate sufficient adhesion. The fibers are bonded to the surrounding fibers, and the fibers in the fiber ejection tube 10 are ejected from the nozzle 11 by the air pressure of the high-pressure hot air supply system. For better results, the temperature of the hot air provided by the high-pressure hot air supply system should be higher than the melting point of the fiber by more than 20°C. Specifically, when the fiber in the fiber ejection tube 10 is a low-melting fiber with a melting point of 110°C, the high-pressure hot air supply system provides hot air with a temperature of 130°C or higher and air with a pressure of 4 to 5 kg/cm ² . More specifically, the temperature of the hot air is 210°C to melt the surface of the fiber in a very short time (about 2 seconds).

Furthermore, each fiber ejection tube 10 can be controlled to move along a horizontal plane perpendicular to the ejection direction of the fiber, that is, if the direction of the fiber ejection tube 10 is the Z axis direction, the fiber ejection tube 10 can It is controlled to move along the horizontal plane formed by the X-axis and the Y-axis, so that the fiber ejection tube 10 ejects fibers in a rotating manner to form a fiber structure 40 with a cylindrical appearance and a circular cross-section, as shown in FIG. 3 As shown, the density at the center of the fiber structure is less than the density near the circumference of the fiber structure, and by adjusting the rotation range of the fiber ejection tube 10, the fiber structure 40 can be adjusted. width.

In the specific embodiment of the present invention, the at least one fiber ejection pipe 10 specifically includes a plurality of fiber ejection pipes 10 arranged at intervals. By adjusting the distance between two adjacent fiber ejection pipes 10 or adjusting the rotation range of each fiber ejection pipe 10, or both at the same time, the fiber structure 40 made by the fiber ejection pipes 10 can be different from each other. Connected and independent of each other to produce a plurality of cylindrical fiber structures 40 at the same time. It is also possible to overlap and connect the peripheral surfaces of adjacent fiber structures 40 to produce a sheet-like fiber structure 40.

The forming mechanism 20 includes two forming conveyor belts 21 and two adjusting conveyor belts 22. The forming conveyor belt 21 and the adjusting conveyor belt 22 are arranged in sequence along the path from the feeding end to the discharging end.

The two forming conveyor belts 21 are arranged at intervals on both sides of the path from the feeding end to the discharging end and parallel to each other. The aforementioned fiber ejection tube 10 sprays fibers toward the space between the two forming conveyor belts 21 to form the The fiber structure 40 is driven by the two forming conveyor belts 21 to move the fiber structure 40 toward the discharge end. Each forming conveyor belt 21 is provided with a plurality of air extraction holes 211 and is connected to a negative pressure system. The system creates an air extraction effect at each air extraction hole 211 to draw the fiber structure 40' and the fibers therein toward both sides, as shown in FIG. 4, thereby improving the lateral support of the fiber structure 40' force.

The two adjusting conveyor belts 22 are also arranged at intervals on both sides of the path from the feeding end to the discharging end and parallel to each other. The aforementioned fiber structure 40' moves from the forming conveyor belt 21 into one of the two adjusting conveyor belts 22 The space between them allows the adjusting conveyor belt 22 to further drive the fiber structure 40' to move toward the discharge end.

Among them, by controlling the speed of the fiber ejection tube 10 and the rotation speed of the fiber ejection tube 10, the density of the fiber structure 40 formed at the moment can be adjusted, so that the fiber structure 40 can provide a higher density. Better support, and the fiber structure 40 can be formed with better softness where the density is lower.

Specifically, under the premise that the rotation speed of the fiber ejection tube 10 is constant, when the amount of fibers ejected by the fiber ejection tube 10 per unit time increases, the density of the local area of the fiber structure 40 can be increased; correspondingly; In particular, when the amount of the fiber ejected from the fiber ejection tube 10 per unit time is reduced, the density of the local area of the fibrous structure 40 can be reduced. On the premise that the fiber ejection tube 10 has the same amount of fibers ejected per unit time, when the rotation speed of the fiber ejection tube 10 slows down, the density of the local area of the fiber structure 40 can be increased; accordingly, When the rotation speed of the fiber ejection pipe 10 increases, the density of the local area of the fiber structure 40 can be reduced. Furthermore, by adjusting the rotation speed of the fiber ejection pipe 10 and the amount of fibers ejected in a unit time at the same time, the fibrous structure 40 having an appropriate density can be efficiently adjusted.

In addition, by controlling the conveying speed of the adjusting conveyor belt 22 and the forming conveyor belt 21, the density of the fiber structure 40' can also be adjusted.

Specifically, when the conveying speed of the adjusting conveyor belt 22 and the forming conveyor belt 21 is lower than the speed at which the fiber ejection tube 10 manufactures the fiber structure 40', the fiber structure 40' will be placed on the forming conveyor belt 21 and The density of the adjustment conveyor belt 22 is increased due to mutual pushing, so that the higher density of the fiber structure 40' can provide a better degree of support; when the conveying speed of the adjustment conveyor belt 22 and the forming conveyor belt 21 is lower than that of the fiber structure 40' When the ejection tube 10 produces the fiber structure 40' at a speed, the fiber structure 40' will be pulled apart, thereby reducing the density of the fiber structure 40' and forming a better softness. Similarly, further adjusting the relative speed of the forming conveyor belt 21 and adjusting the conveyor belt 22 can also achieve the purpose of regulating the density of the fiber structure 40'.

The shaping mechanism 30 is connected to the shaping mechanism 20 and includes a certain shaped conveyor belt 31 and two shaped bellows 32. The two shaped bellows 32 are arranged at intervals on both sides of the path from the feeding end to the discharging end. The fiber structure 40' of the forming mechanism 20 further moves into the space between the two shaping wind boxes 32, and the shaping conveyor belt 31 drives the fiber structure 40' to move toward the discharge end.

A heating section 321 is located on the front half of each fixed-shaped wind box 32 close to the forming mechanism 20, and the second half section located close to the discharge end is a cooling section 322. The position of the heating section 321 of the two fixed-shaped wind boxes 32 corresponds to , The location of the cooling section 322 is also corresponding, where the heating section 321 is connected to a high-temperature gas supply system to heat the fiber structure 40' passing through the heating section 321, and the cooling section 322 is connected to a low-temperature gas supply system, In order to cool down the fiber structure 40 ′ passing through the heating section 321. When the fiber structure 40' passes through the heating section 321 of the shaping wind box 32, the surface of the fibers in the fiber structure 40' will melt due to the high temperature, so that the fibers are bonded to each other at the overlapped position; When the fiber structure 40' further passes through the cooling section 322 of the shaping wind box 32, the melting part of the fibers will be solidified due to low temperature, thereby fixing the overall shape of the fiber structure 40', and the shaping conveyor belt 31 The fiber structure 40' is driven to move toward the discharge end.

As shown in Figure 1, in the first preferred embodiment of the present invention, the shaped conveyor belt 31 is provided with a plurality of perforations 311, and the shaped bellows 32 of the shaped mechanism 30 is installed on the shaped conveyor belt 31. In this case, another sizing bellows 32 is installed on the opposite side of the sizing conveyor belt 31 to shorten the overall length of the sizing mechanism 30 and the manufacturing device of the adjustable-density fiber structure.

Further referring to FIG. 2, in the second preferred embodiment of the present invention, the forming mechanism 20 omits the two adjusting conveyor belts, and makes the fiber structure 40' directly move from the second forming conveyor belt 21 into the Modeling organization 30A. The two shaping bellows 32A of the shaping mechanism 30A are respectively arranged on both sides of the path from the feeding end to the discharging end, and the shaping conveyor belt 31A is arranged between the two shaping bellows 32A and the discharging end. The fiber structure 40' is moved into the space between the two shaping wind boxes 32A to be heated, cooled and shaped, and then moved toward the discharge end driven by the shaping conveyor belt 31A.

In addition to the above-mentioned method of controlling the rotation of the fiber ejection tube 10 to produce a cylindrical fiber structure 40, it is also possible to use "side-by-side composite fibers" to form the fiber structure, because the side-by-side composite fibers are made of Fibers with polymers of different properties or structures arranged side by side and compounded along the fiber axis can produce a spiral three-dimensional crimp similar to wool by using the dense composition of each component and the difference in shrinkage, so that even if the fiber is ejected from the position of the tube 10 If it is fixed, the ejected fiber can be formed into a cylindrical shape. Specifically, the side-by-side composite fiber used can be a composite fiber with a PET (polyethylene terephthalate) fiber as the core and a side-by-side composite low-melting modified PET fiber on the outer layer of the PET fiber, When the low-melting modified PET fiber passes through the heating section 321 of the setting mechanism 30, it can melt at a relatively low temperature, and the fibers can be bonded to each other, so energy consumption can be reduced.

With reference to Figure 5, the above-mentioned adjustable-density fiber structure manufacturing device can be used to implement the adjustable-density fiber structure manufacturing method of the present invention. The manufacturing method of the adjustable-density fiber structure includes a fiber Spraying step 101, a forming step 102, and a certain type step 103.

In the fiber ejection step 101, the aforementioned at least one fiber ejection tube 10 is used to eject fibers downward while rotating. The fiber ejection tube heats the ejected fibers to bond the fibers to each other, so that each fiber The fibers ejected from the ejection pipe 10 form a columnar fiber structure 40, wherein, as described above, by controlling the speed of the fiber ejection pipe 10 and the rotation speed of the fiber ejection pipe 10, the currently formed fiber structure can be adjusted. The density of the fiber structure 40.

In the forming step 102, air is drawn on opposite sides of the fiber structure 40' to draw the fiber structure 40' and the fibers therein toward both sides, thereby improving the fiber structure 40' Support force in the lateral direction.

In the setting step 103, the fiber structure 40' is first heated to make the fibers adhere to each other at the overlapping position, and then the fiber structure 40' is cooled to fix the fiber structure 40' The overall shape.

The advantage of the manufacturing device and method of the adjustable-density fiber structure 40, 40' of the present invention is that it can make the originally loose fiber into the internal structure, that is, the fiber structure 40, 40' with elasticity and supporting force, and The fiber structures 40, 40' made by the manufacturing device can be placed in a cloth cover for sale and use as long as they are further cut. Furthermore, the fiber structure 40, 40' can be partially adjusted by the manufacturing device. The density of 40' can adjust the supporting force and softness of the fiber structure 40, 40', so as to achieve the purpose of easily manufacturing the supporting fiber structure 40, 40'.

10: Fiber ejection tube 11: Nozzle 20: Forming mechanism 21: Forming conveyor belt 211: Exhaust Hole 22: Adjust the conveyor belt 30, 30A: setting mechanism 31, 31A: stereotyped conveyor belt 311: Perforation 32, 32A: stereotyped bellows 321: heating section 322: Cooling section 40, 40': fiber structure 101: Fiber ejection step 102: Forming steps 103: Setting Steps

FIG. 1 is a schematic diagram of the first preferred embodiment of the manufacturing apparatus of the adjustable-density fiber structure of the present invention. 2 is a schematic diagram of a second preferred embodiment of the manufacturing apparatus of the adjustable density fiber structure of the present invention. . Fig. 3 is a schematic cross-sectional view of the adjustable-density fiber structure manufactured by the present invention. 4 is another schematic cross-sectional view of the adjustable-density fiber structure manufactured by the present invention. Fig. 5 is a flow chart of the manufacturing method of the adjustable-density fiber structure of the present invention.

10: Fiber ejection tube

11: Nozzle

20: Forming mechanism

21: Forming conveyor belt

211: Exhaust Hole

22: Adjust the conveyor belt

30: stereotyped organization

31: stereotyped conveyor belt

311: Perforation

32: stereotyped bellows

321: heating section

322: Cooling section

40, 40': fiber structure

Claims (13)

A manufacturing device for a fiber structure with adjustable density is provided with at least one fiber ejection tube, a forming mechanism and a certain type mechanism in sequence between a feeding end and a discharging end, wherein: Each fiber ejection pipe is connected to a high-pressure hot air supply system and has a downward nozzle that can eject fibers downward; The forming mechanism includes two forming conveyor belts. The two forming conveyor belts are arranged at intervals on both sides of the path from the feeding end to the discharging end and are parallel to each other. Each forming conveyor belt is provided with a plurality of air extraction holes and connected A negative pressure system, which creates a suction effect at each suction hole; The shaping mechanism is connected to the shaping mechanism and includes a certain type of conveyor belt and two shaped wind boxes. The two shaped wind boxes are arranged at intervals on both sides of the path from the feeding end to the discharging end. The front half of the molding mechanism is connected to a heating section of a high-temperature gas supply system, and the second half of the molding mechanism is close to the discharge end is a cooling section of a low-temperature gas supply system. The manufacturing device of the adjustable-density fiber structure according to claim 1, wherein: each of the aforementioned fiber ejection pipes is controlled to move along a horizontal plane perpendicular to the ejection direction of the fiber. The device for manufacturing an adjustable-density fiber structure according to claim 1, wherein: the sizing conveyor belt is provided with a plurality of perforations; the sizing mechanism of the sizing mechanism is provided with a certain type of air box in the sizing conveyor belt, and The fixed-shaped wind box is installed on the opposite side of the fixed-shaped conveyor belt. The manufacturing device of the adjustable-density fiber structure according to claim 1, wherein: the two shaping bellows of the shaping mechanism are respectively arranged on both sides of the path from the feeding end to the discharging end; the shaping conveyor belt is arranged Between the second shaped wind box and the discharge end. The device for manufacturing an adjustable density fiber structure according to any one of claims 1 to 4, wherein the aforementioned forming mechanism further includes two adjusting conveyor belts, the two adjusting conveyor belts being spaced apart at the feeding end The two sides of the path to the discharge end are parallel to each other. The device for manufacturing an adjustable-density fiber structure according to any one of claims 1 to 4, wherein the temperature of the hot air provided by the high-pressure hot air supply system connected to the fiber ejection tube is 20 higher than the melting point of the fiber ℃ above. The manufacturing apparatus of the adjustable density fiber structure according to claim 5, wherein the temperature of the hot air provided by the high-pressure hot air supply system connected to the fiber ejection pipe is higher than the melting point of the fiber by more than 20°C. The device for manufacturing an adjustable-density fiber structure according to any one of claims 1 to 4, wherein the at least one fiber ejection pipe includes a plurality of fiber ejection pipes arranged at intervals. The manufacturing apparatus of the adjustable-density fiber structure according to claim 5, wherein the at least one fiber ejection pipe includes a plurality of fiber ejection pipes arranged at intervals. A method for manufacturing an adjustable density fiber structure, which includes: A fiber ejection step: use at least one fiber ejection tube to eject fibers downward, and the fiber ejection tube heats the ejected fibers to bond the fibers to each other, so that the fibers ejected from each fiber ejection tube form columnar fibers Structure A forming step: evacuating air on opposite sides of the fiber structure to draw the fiber structure and the fibers in it toward both sides; The shaping step: firstly heat the fiber structure to make the fibers adhere to each other at the overlapping position, and then cool the fiber structure to fix the overall shape of the fiber structure. The method for manufacturing an adjustable-density fiber structure according to claim 10, wherein, in the fiber ejection step, the at least one fiber ejection pipe system rotates while ejecting the fiber downward. The method for manufacturing an adjustable-density fiber structure according to claim 10, wherein, in the fiber ejection step, the speed of the fiber ejection tube is controlled to adjust the density of the formed fiber structure. The method for manufacturing an adjustable-density fiber structure according to claim 10, wherein, in the fiber ejection step, the rotation speed of the fiber ejection tube is controlled to adjust the density of the formed fiber structure.

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