CN117485988A - Anti-jamming wire unwinding device and anti-jamming wire unwinding method - Google Patents

Abstract

The invention relates to an anti-jamming silk unwinding device and an anti-jamming silk unwinding method. This prevent card silk unwinding device includes: an unwinding spool for unwinding a wire on the unwinding spool; and the blowing assembly is arranged at the downstream of the unwinding spool and is used for blowing air to the unwinding spool from bottom to top by blowing air flow, and the blowing air flow is positioned in a clamping area formed by the outer surface of the unwinding spool adjacent to the unwound yarn and the unwound yarn. The anti-blocking yarn unwinding device can easily promote the separation of the unreeled yarn layer on the unreeled yarn reel and the unreeled yarn layer on the unreeled yarn reel, so that the nested yarn is separated out during unwinding, the yarn embedding effect is realized, the problem of yarn unwinding is further prevented, and the device is particularly suitable for hollow fiber membranes and can avoid the damage deformation of the hollow fiber membranes.

Description

Anti-jamming wire unwinding device and anti-jamming wire unwinding method

Technical Field

The invention relates to the technical field of spinning, in particular to an anti-jamming yarn unwinding device and an anti-jamming yarn unwinding method.

Background

Taking the hollow fiber membrane as an example, in the spinning winding process, in order to enable the hollow fiber membrane to be uniformly distributed and improve the winding quantity of a single spool, the hollow fiber membrane is generally uniformly and layered wound in the spool, but due to the non-uniformity of the gaps of the hollow fiber membrane and the sliding of the hollow fiber membrane, the upper hollow fiber membrane can be randomly embedded into the gaps of the lower hollow fiber membrane, so that the problem of yarn clamping is caused. The gap at the clamping wire is smaller than the diameter of the hollow fiber membrane, the embedded hollow fiber membrane can be extruded, in the unwinding process, the embedded hollow fiber membrane can be separated from the clamping wire by a certain tension, when the tension is overlarge, the embedded hollow fiber membrane can be separated from the clamping wire, meanwhile, the hollow fiber membrane can be stretched and deformed due to the tension, the microporous structure of the hollow fiber membrane is damaged, and the membrane performance is reduced.

Therefore, in the step of unwinding the hollow fiber membrane in the process of braiding, split charging and the like, the hollow fiber membrane needs to be unwound from the spool smoothly by the action of the wire unwinding, so that the development of the wire anti-seizing unwinding device with the wire unwinding action has great practical significance for unwinding the hollow fiber membrane from the spool.

Disclosure of Invention

Accordingly, it is necessary to provide an anti-seize yarn unwinding device and an anti-seize yarn unwinding method which can be applied to a hollow fiber membrane and which can prevent damage and deformation of the hollow fiber membrane.

The invention is realized by the following technical scheme.

In one aspect of the present invention, there is provided an anti-seize unwinding device comprising:

an unwinding spool for unwinding a wire on the unwinding spool; and

The blowing assembly is arranged at the downstream of the unwinding spool and is used for blowing air to the unwinding spool from bottom to top with blowing air flow, and the blowing air flow is positioned in a clamping area formed by the outer surface of the unwinding spool adjacent to the unwound yarn and the unwound yarn.

In some embodiments, taking the line speed direction of the highest point of the unwinding spool as a reference direction, wherein the included angle between the unwound wire and the reference direction is an unwinding angle, and the unwinding angle is between 0 and 150 degrees;

and/or the included angle between the unwound silk thread and the blowing air flow is a blowing angle, and the blowing angle is between 0 and 90 degrees.

In some of these embodiments, the unwound wire is located in the direction of the line speed of the unwinding point of the unwound wire.

In some of these embodiments, the blowing assembly has a plurality of blowing holes, the vertical distance between the top of the blowing holes and the lower surface of the unwind spool being 5cm to 20cm.

In some embodiments, a plurality of the air blowing holes are arranged in rows or in arrays, and the distance between two adjacent air blowing holes is 1 cm-2 cm; the aperture of the air blowing hole is 1 mm-10 mm;

and/or, the blowing component is an air knife component.

In some of these embodiments, the blowing assembly is located below the unwind spool and the plurality of blowing aperture coverage areas of the blowing assembly constitute a blowing zone having a lateral span greater than or equal to the lateral span of the winding zone of the unwind spool to enable the blowing air flow of the blowing zone to act on the entire winding zone.

In some embodiments, the anti-seize yarn unwinding device further comprises a suction gun assembly arranged at the downstream of the blowing assembly, wherein the suction gun assembly comprises a yarn suction pipeline and a gas supply pipeline, the yarn suction pipeline is positioned in the extending direction of the unwound yarn and is used for introducing the unwound yarn blown from the blowing assembly, and the gas supply pipeline is communicated with the yarn suction pipeline and is used for providing unwinding airflow for the unwound yarn.

In some embodiments, the inner diameter of the wire inlet of the wire suction pipeline is 1-3 mm, the inner diameter of the wire outlet of the wire suction pipeline is 2-5 mm, and/or the inner diameter of the air supply pipeline is 1-3 mm;

and/or the length from the wire inlet of the wire suction pipeline to the wire outlet of the wire suction pipeline is 5 cm-10 cm;

and/or an included angle formed by the wire inlet end of the wire suction pipeline and the air supply pipeline at the joint is 25-50 degrees.

In some embodiments, the suction gun assembly is arranged below the unwinding spool, and the vertical distance between the wire inlet of the wire suction pipeline and the lower surface of the unwinding spool is 30 cm-120 cm;

or the suction gun assembly is arranged below the blowing assembly, and the vertical distance between the wire inlet of the wire suction pipeline and the lower surface of the blowing assembly is 30 cm-80 cm.

In some embodiments, the suction gun assembly further comprises an inner sleeve disposed on an inner wall of the suction gun assembly;

wherein the inner sleeve is a ceramic inner sleeve or a polytetrafluoroethylene inner sleeve; and/or the number of the groups of groups,

the friction coefficient of the inner sleeve is 0.01-0.3.

In another aspect of the present invention, an anti-jamming unwinding method is provided, which is performed by using the anti-jamming unwinding device, and includes the following steps:

and unwinding the silk yarn from the unwinding spool, wherein in the unwinding process, the unwinding spool is blown with the blowing air flow from bottom to top, and the blowing air flow is positioned in a clamping area formed by the outer surface of the unwinding spool adjacent to the unwound silk yarn and the unwound silk yarn.

In some embodiments, the air blowing is supplied at a pressure of 0.5 to 5Mpa; and/or the blowing velocity of the blowing air is 0.1-0.4 m ³ /min。

In some of these embodiments, the method further comprises the steps of:

after the step of blowing, an unwinding air stream is provided to the blown unwound yarn.

In some of these embodiments, the feed air pressure of the unwind air stream is0.5-2 Mpa; and/or the purge flow rate of the unwinding air flow is 0.05-0.2 m ³ /min。

According to the anti-jamming yarn unwinding device, the air blowing component is arranged at the downstream of the unwinding spool, and is controlled to face the unwinding spool to blow air in the clamping area formed by the outer surface of the unwinding spool adjacent to the unwound yarn and the unwound yarn, so that the unwinding point of the yarn is separated from the unreeled yarn layer on the unwinding spool under the action of air blowing pressure, and the air blowing component blows air to the yarn unwinding included angle from bottom to top, the unreeled yarn extending downwards can be very easily caused to be separated from the unreeled yarn layer on the unwinding spool, and the nested yarn is further separated from the unwinding spool at the same time, so that the yarn embedding is realized, and the problem of yarn clamping during unwinding is further prevented.

The anti-blocking yarn unwinding device is particularly suitable for the unwinding process of the hollow fiber membrane, can effectively achieve the anti-blocking yarn effect in the unwinding process, is easy for subsequent weaving work, is in contact with the hollow fiber membrane in a blowing mode, can avoid the risk of scratching the surface of the hollow fiber membrane, and also avoids the problems of performance loss and unrecoverable stretching and breakage caused by the fact that the embedded hollow fiber membrane is forcedly withdrawn by applying tension to cause the microporous deformation of the hollow fiber membrane.

Drawings

Fig. 1 is a schematic structural diagram of an anti-jamming unwinding device according to an embodiment of the invention.

Fig. 2 is a right-side schematic view of an example of the anti-seize unwinding device shown in fig. 1.

Fig. 3 is a right side schematic view of still another example of the anti-seize unwinding device shown in fig. 1.

Fig. 4 is a right side schematic view of another example of the anti-seize unwinding device shown in fig. 1.

Reference numerals illustrate:

100. an anti-seize yarn unwinding device; 110. unwinding the spool; 120. an air blowing assembly; 121. a blow hole; 101. blowing air flow; 102. a reference direction; 103. unwinding the air stream; 130. a suction gun assembly; 131. a wire suction pipeline; 132. an air supply duct; 210. an unwound yarn; 220: the outer surface of the spool adjacent to the unwound wire is unwound.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. In order to make the objects, technical solutions and advantages of the present invention more concise and clear, preferred embodiments of the present invention are shown in the accompanying drawings. The embodiments described below are only preferred embodiments of the present invention, which can be used to describe the present invention, and should not be construed as limiting the scope of the invention, which can be implemented in many different forms. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

At present, a warp knitting machine is used for knitting textile yarns, the problem that yarn embedding and yarn clamping are difficult to occur in the unwinding process is solved, and meanwhile, the influence on the yarns in the unwinding and stretching process is small, so that the yarn unwinding process can be completed smoothly by applying certain tension. However, when the hollow fiber membrane is woven, the hollow fiber membrane is wound on the spool to easily generate the problem of wire embedding and clamping, and simultaneously, the embedded hollow fiber membrane is forced to withdraw by applying tension, so that micropores of the hollow fiber membrane are deformed, and the performance of the hollow fiber membrane is lost. It will be appreciated by those skilled in the art that the hollow fiber membrane filaments need to be wound simultaneously onto bobbins during drawing and then unwound from the bobbins (i.e., unwound) during subsequent braiding, the unwound membrane filaments being braided downstream. Therefore, in order to ensure uniform and smooth filament withdrawal, the ideal filament winding state is a layer-by-layer uniform filament winding. The so-called "inlay" i.e. the post-wound filaments are embedded in the layer in which the already wound filaments are located; in this case, the unwinding process is likely to cause unsmooth filament unwinding and even filament jamming, thereby affecting downstream braiding. Therefore, there is a need to develop an anti-seize unwinding device that is particularly suitable for unwinding hollow fiber membranes.

Referring to fig. 1, an anti-jamming unwinding device 100 according to an embodiment of the present invention includes an unwinding spool 110 and a blowing assembly 120.

Wherein the unwinding spool 110 is used to unwind the wire on the unwinding spool 110. It will be appreciated that in fig. 1, the unwind spool 110 rotates about a central rotational axis, completing the unwinding of the wire.

From the right side of fig. 1, the wire may unwind clockwise about the central axis of rotation or counterclockwise about the central axis of rotation as viewed from right to left. The following description will be given by taking the counterclockwise direction as an example.

Referring to fig. 1, an unwound wire 210 unwound from an unwinding spool 110 and an outer surface 220 of the unwinding spool 110 adjacent to the unwound wire 210 constitute a nip region according to the need of a subsequent weaving process.

As shown in fig. 2 to 4, the blowing assembly 120 is provided downstream of the unwinding spool 110, and the blowing assembly 120 is used to blow air in the nip area from bottom to top toward the unwinding spool 110. Namely: the blowing air flow 101 of the blowing assembly 120 is located within a nip region formed by the outer surface 220 of the unwind spool 110 adjacent to the unwound wire 210 and the unwound wire 210.

It should be noted that "downstream" refers to a position at the opposite next process in the direction of material movement. In this particular example, the wire wound on the unwinding spool 110 is unwound on the unwinding spool 110 and then blown through the blowing assembly 120. The blowing process of the blowing assembly 120 is located in the next process with respect to the unwinding process of the unwinding spool 110, i.e., the blowing assembly 120 is located downstream of the unwinding spool 110. Similar follows.

In the anti-jamming yarn unwinding device 100, by arranging the air blowing component 120 at the downstream of the unwinding spool 110 and controlling the air blowing component 120 to blow towards the unwinding spool 110 in the sandwiched area formed by the outer surface 220 of the unwinding spool 110 adjacent to the unwound yarn 210 and the unwound yarn 210, the unwinding point of the yarn is separated from the unreeled yarn layer on the unwinding spool 110 under the action of air blowing pressure, and the air blowing component 120 blows air from the unwinding angle of the yarn from bottom to top, the unreeled yarn 210 extending downwards can be very easily caused to be separated from the unreeled yarn layer on the unwinding spool 110, so that the nested yarn is separated out at the same time of unwinding, the yarn embedding is realized, and the problem of yarn jamming is prevented.

The anti-seizing unwinding device 100 is particularly suitable for the unwinding process of hollow fiber membranes, can effectively realize the anti-seizing effect in the unwinding process, is easy for subsequent weaving work, and simultaneously adopts a blowing mode to contact with the hollow fiber membranes, so that the risk of scratching the surfaces of the hollow fiber membranes can be avoided, and the problems of performance loss and unrecoverable stretching and fracture caused by deformation of micropores of the hollow fiber membranes due to forced withdrawal of the embedded hollow fiber membranes by applying tension are avoided.

It is to be understood that the anti-seize yarn unwinding device 100 described above is particularly suitable for an unwinding process sensitive to tensile tension such as a hollow fiber membrane, but is not limited thereto, and may be also suitable for an unwinding process of a spun yarn.

In some of these embodiments, the air blowing assembly 120 is disposed below the unwind spool 110 such that the air blowing assembly 120 blows from bottom to top. Thus, the unwound wire 210 on the unwinding spool 110 extends downward to the vicinity of the blowing assembly 120, and the downward-extending unwound wire 210 can be very easily urged to separate from the unreeled wire layer on the unwinding spool 110 by blowing the wire unwinding angle from bottom to top through the blowing assembly 120.

Taking fig. 2 as an example, the unwind spool 110 rotates at an angular velocity ω. Taking the line speed direction of the highest point A of the unwinding spool 110 as a reference direction 102, the included angle between the unwound wire 210 and the reference direction 102 is an unwinding angle alpha, and the unwinding angle alpha is between 0 and 150 degrees. It is understood that the reference direction 102 is located in a horizontal direction.

As shown in fig. 2, when the unwinding angle α is 90 °, the unwound wire 210 sags downward in the direction of gravity.

As shown in fig. 3, the unwinding angle α < 90 °, which may be, for example, 30 °, 60 °, 70 °, the unwound wire 210 is disposed obliquely downward and leftward from the unwinding spool 110.

As shown in fig. 4, when the unwinding angle α > 90 °, for example, 120 °, 130 °, 150 °, the unwound wire 210 is disposed obliquely downward to the right from the unwinding spool 110.

Preferably, the unwinding angle α is 30 ° to 90 °.

Further, in the specific example as in fig. 2 to 4, the unwound wire 210 is located in the direction of the linear velocity of the unwinding point B of the unwound wire 210; in other words, the unwound wire 210 is located in a tangential direction to the unwinding point B of the unwound wire 210.

Further, referring to fig. 2 to 4, the angle between the unwound yarn 210 and the blowing air flow 101 of the blowing assembly 120 is a blowing angle β, which is between 0 ° and 90 °, preferably 5 ° to 90 °, and 5 ° to 75 °; further, the blowing angle β is 30 °.

Those skilled in the art will appreciate that the air blowing assembly 120 is not necessarily located directly below the unwind spool 110 and is preferably not in the direction of extension of the unwound wire 210. The position of the blowing unit 120 is set so that the blowing air flow 101 thereof satisfies the above-described blowing angle β.

As shown in fig. 2-4, the air blowing assembly 120 is disposed downstream of the unwind spool 110.

Those skilled in the art will appreciate that the case of fig. 1, from right to left, and clockwise filament withdrawal, and the left-hand schematic view of fig. 1, are similar to those of fig. 2 to 4, and will not be described again.

In some of these embodiments, as shown in fig. 1, the air vent 121 of the air blowing assembly 120 is disposed toward the unwinding spool 110, and a vertical distance L1 between the top of the air vent 121 (i.e., the upper surface of the air vent 121 near the unwinding spool 110) and the lower surface of the unwinding spool 110 is 5cm to 20cm.

In some of these embodiments, the insufflation assembly 120 is an air knife assembly. Further, the blowing module 120 is a strip air knife.

In some embodiments, the blowing assembly 120 has a plurality of blowing holes 121, and the plurality of blowing holes 121 are arranged in a row or in an array. It should be noted that the array is distributed in a plurality of rows and columns.

Further, the shape of the blowing hole 121 may be a circular hole, an elliptical hole, a square hole, a long-strip hole, and is not limited thereto.

Further, the interval between the adjacent two blowholes 121 is 1cm to 2cm.

Further, the aperture of the air blowing hole 121 is 1mm to 10mm. Further, when the blowholes 121 are circular holes, elliptical holes, square holes, or elongated holes, the longest hole diameter of the opposite sides is 1mm to 10mm, and the shortest hole diameter of the opposite sides is 1mm to 5mm.

In some of these embodiments, as shown in fig. 1, the blowing assembly 120 is located below the unwind spool 110, and the lateral span L3 of the blowing zone of the blowing assembly 120 is greater than or equal to the lateral span L2 of the winding zone of the unwind spool 110 to enable the blowing air flow of the blowing zone to act on the entire winding zone. This ensures that the blowing assembly 120 blows well against the wire at various locations on the unwind spool 110. It is understood that the lateral span herein refers to the dimension along the axial direction of the unwind spool 110.

Further, the length of the blowing assembly 120 is 1.0 to 1.3 times the length of the unwinding spool 110.

The blowing area of the blowing assembly 120 refers to an area of the blowing assembly 120 in which the blowing holes 121 are distributed, that is, an area covered by the plurality of blowing holes 121 of the blowing assembly 120 forms a blowing area. The winding area of the unwinding spool 110 refers to the area of the unwinding spool 110 around which the wire is wound.

Further, the air pressure of the air blowing unit 120 is 0.5 to 5Mpa.

Further, the blowing flow rate of the blowing air of the blowing assembly 120 is 0.1 to 0.4m ³ /min。

In some of these embodiments, the anti-snag and unwind apparatus 100 further includes a suction gun assembly 130. The suction gun assembly 130 includes a suction line 131 and a gas supply line 132. The yarn sucking pipe 131 is located in the extending direction of the unwound yarn 210 and is used for feeding the unwound yarn 210 blown from the blowing assembly 120. The air supply duct 132 communicates with the suction duct for providing the unwinding air flow 103 to the unwound yarn 210. The suction gun assembly 130 is arranged downstream of the blowing assembly 120, and is used for introducing the unwound wire 210 blown from the blowing assembly 120 into a wire suction pipeline of the suction gun assembly 130 and providing an unwinding air flow 103 for the unwound wire 210 in the wire suction pipeline, wherein the unwinding air flow 103 provides a downward force for the unwound wire 210 so as to promote smooth unwinding of the unwound wire 210 under the unwinding air flow 103. Under the double effects of the blowing action of the blowing component 120 and the unwinding air flow 103 of the suction gun component 130, the embedded hollow fiber membrane is gradually unwound and unwound under the micro tension, so that the deformation of the hollow fiber membrane is small, and the follow-up braiding and other works are easy. In addition, the hollow fiber membrane clamping wires are separated through the gas action in the whole unwinding process, and the whole unwinding process is free from other contact with the surfaces of the hollow fiber membranes, so that the risks of scratching the surfaces of the hollow fiber membranes and the like are avoided.

It is understood that in other embodiments, other drive assemblies may be used to provide unwinding power to the unwound wire 210 after blowing from the blowing assembly 120.

In some embodiments, the wire suction pipe 131 and the air supply pipe 132 extend from top to bottom, and at the connection, the wire inlet end of the wire suction pipe 131 (the wire inlet end is the end of the wire suction pipe 131 near the wire inlet) and the air supply pipe 132 form an acute included angle, preferably an included angle of 25 ° to 50 °. The gun assembly 130 thus formed is "Y" shaped, the unwound wire 210 blown from the blowing assembly 120 is fed into the suction duct 131, while the unwinding air flow 103 is fed into the air supply duct 132, the unwound wire 210 and the unwinding air flow 103 interacting, the unwinding air flow providing unwinding power to the unwound wire 210. The unwound wire 210 then exits from the wire outlet of the wire suction conduit 131 and may enter subsequent processes such as braiding, winding, etc.

Further, the air pressure of the unwinding air stream 103 is 0.5 to 2Mpa.

Further, the purge flow rate of the unwinding gas stream 103 is 0.05-0.2 m ³ And/min. In other words, the purge flow rate in the air supply pipe 132 is 0.05 to 0.2m ³ /min。

Further, the inner diameter of the wire inlet of the wire suction pipe 131 is 1mm to 3mm. The inner diameter of the yarn sucking pipe 131 is preferably within this range, considering the diameter of the hollow fiber membrane, to avoid the risk of scratches on the surface of the hollow fiber membrane caused by contact of the yarn feeding pipe 131 with the hollow fiber membrane.

Further, the inner diameter of the air supply pipe 132 is the same as the inner diameter of the wire suction pipe 131. For example, the inner diameter of the air supply pipe 132 is 1mm to 3mm. In one embodiment, the wire outlet of the wire suction pipe 131 may optionally have an inner diameter of 2mm to 5mm.

Further, the length of the wire suction pipe 131 (specifically, the wire inlet to the wire outlet of the wire suction pipe 131) is 5cm to 10cm.

In some of these embodiments, the suction gun assembly 130 is disposed below the unwinding spool 110, and the vertical distance L4 between the wire inlet of the wire suction pipe 131 and the lower surface of the unwinding spool 110 is 30cm to 120cm.

In some embodiments, the suction gun assembly 130 is disposed below the blowing assembly 120, and a vertical distance L5 between the wire inlet of the wire suction pipe 131 and the lower surface of the blowing assembly 120 is 30cm to 80cm.

It will be appreciated that the air blowing assembly 120, and the suction gun assembly 130 are disposed downstream of the unwind spool 110 in sequence. In a specific example, the air blowing assembly 120 and the suction gun assembly 130 are sequentially disposed below the unwind spool 110. In other words, the unwound wire 210 from the unwinding spool 110 sequentially passes through the blowing assembly 120 and the suction gun assembly 130 from top to bottom.

Further, the gas sources employed by the insufflation assembly 120 and the suction gun assembly 130 may each be independently selected from compressed air, nitrogen or an inert gas.

Further, the material of the suction gun assembly is not limited, and can be metal, ceramic or polytetrafluoroethylene.

In some embodiments, the suction gun assembly 130 further includes an inner sleeve disposed on an inner wall of the suction gun assembly 130. Specifically, the inner wall of the wire suction pipe 131 and/or the air supply pipe 132 is sleeved.

Preferably, the inner sleeve is arranged when the material of the suction gun assembly is metal. Further, the inner sleeve is a ceramic inner sleeve or a polytetrafluoroethylene inner sleeve. The inner sleeves made of the materials have small contact damage to the hollow fiber membrane, and can effectively reduce the damage to the hollow fiber membrane when the inner wall of the suction gun assembly 130 contacts with the hollow fiber membrane.

Further, the friction coefficient of the inner sleeve is 0.01-0.3. By controlling the coefficient of friction of the inner sleeve to be within this small range, damage to the hollow fiber membrane can be effectively reduced when the inner wall of the suction gun assembly 130 contacts the hollow fiber membrane.

The invention further provides an anti-jamming silk unwinding method, which can be carried out by adopting the anti-jamming silk unwinding device.

The anti-jamming yarn unwinding method comprises the following step S10: the yarn is unwound from the unwinding spool, and during the unwinding process, the unwinding spool is blown with the blowing air flow described above from bottom to top.

It will be appreciated that other details of the anti-snag unwinding method are described in detail in the foregoing sections and are not repeated here. Further, in step S10, the unwinding direction or the moving direction of the unwound yarn is opposite or substantially opposite to the blowing direction. By "opposite or substantially opposite" is meant that the unwound wire moves downward while blowing upward or obliquely upward.

In some of these embodiments, the step of blowing is performed at a feed gas pressure of 0.5 to 5Mpa.

In some of these embodiments, the step of blowing has a purge flow rate of 0.1 to 0.4m ³ /min。

In some of these embodiments, the method further includes the following step S20: after the blowing step, an unwinding air stream is provided to the unwound wire 210.

Further, in step S20, the unwinding direction or moving direction of the unwound yarn is the same as or substantially the same as the blowing direction of the unwinding air stream. By "identical or substantially identical" it is meant that the unwound wire moves downward and the unwinding air stream blows downward or obliquely downward.

Further, the supply air pressure of the unwinding air stream is 0.5-2 Mpa.

Further, the methodThe purging flow rate of the unwinding air flow is 0.05-0.2 m ³ /min。

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. The scope of the invention is therefore intended to be covered by the appended claims, and the description and drawings may be interpreted in accordance with the contents of the claims.

Claims (14)

1. An anti-seize unwinding device, characterized in that it comprises:

an unwinding spool for unwinding a wire on the unwinding spool; and

The blowing assembly is arranged at the downstream of the unwinding spool and is used for blowing air to the unwinding spool from bottom to top with blowing air flow, and the blowing air flow is positioned in a clamping area formed by the outer surface of the unwinding spool adjacent to the unwound yarn and the unwound yarn.

2. The anti-seize unwinding device according to claim 1, characterized in that, taking the direction of the linear velocity of the highest point of the unwinding spool as reference direction, the angle between the unwound wire and the reference direction is an unwinding angle, which is comprised between 0 ° and 150 °;

and/or the included angle between the unwound silk thread and the blowing air flow is a blowing angle, and the blowing angle is between 0 and 90 degrees.

3. The anti-seize unwinding device according to claim 1, characterized in that said unwound wire is located in the direction of the linear velocity of the unwinding point of said unwound wire.

4. The anti-seize unwinding device according to claim 1, characterized in that said blowing assembly has a plurality of blowing holes, the vertical distance between the top of said blowing holes and the lower surface of said unwinding spool being 5 cm-20 cm.

5. The anti-seize unwinding device according to claim 4, characterized in that a plurality of said air blowing holes are arranged in rows or in arrays, the distance between two adjacent air blowing holes being 1 cm-2 cm; the aperture of the air blowing hole is 1 mm-10 mm;

and/or, the blowing component is an air knife component.

6. The anti-seize unwind device of claim 1, characterized in that said air blowing assembly is located below said unwind spool and a plurality of air blowing aperture coverage areas of said air blowing assembly constitute an air blowing zone having a transverse span greater than or equal to the transverse span of the winding zone of said unwind spool to enable air blowing of said air blowing zone to be applied to the entire winding zone.

7. The anti-seize yarn unwinding device according to any one of claims 1 to 6, further comprising a suction gun assembly downstream of said blowing assembly, said suction gun assembly comprising a yarn suction duct located in the direction of extension of said unwound yarn for feeding the unwound yarn blown from said blowing assembly, and a gas supply duct in communication with said yarn suction duct for providing an unwinding air flow to the unwound yarn.

8. The anti-seize unwinding device according to claim 7, characterized in that the inner diameter of the wire inlet of the wire suction pipe is 1-3 mm, the inner diameter of the wire outlet of the wire suction pipe is 2-5 mm, and/or the inner diameter of the air supply pipe is 1-3 mm;

and/or the length from the wire inlet of the wire suction pipeline to the wire outlet of the wire suction pipeline is 5 cm-10 cm;

and/or an included angle formed by the wire inlet end of the wire suction pipeline and the air supply pipeline at the joint is 25-50 degrees.

9. The anti-seize unwinding device according to claim 7, characterized in that said suction gun assembly is arranged below said unwinding spool, the vertical distance between the wire inlet of said suction pipe and the lower surface of said unwinding spool being 30 cm-120 cm;

or the suction gun assembly is arranged below the blowing assembly, and the vertical distance between the wire inlet of the wire suction pipeline and the lower surface of the blowing assembly is 30 cm-80 cm.

10. The anti-snagging device according to claim 7, wherein said suction gun assembly further comprises an inner sleeve, said inner sleeve being disposed on an inner wall of said suction gun assembly;

wherein the inner sleeve is a ceramic inner sleeve or a polytetrafluoroethylene inner sleeve; and/or the number of the groups of groups,

the friction coefficient of the inner sleeve is 0.01-0.3.

11. An anti-seize unwinding method, characterized in that it is carried out with an anti-seize unwinding device according to any one of claims 1 to 10, comprising the steps of:

and unwinding the silk yarn from the unwinding spool, wherein in the unwinding process, the unwinding spool is blown with the blowing air flow from bottom to top, and the blowing air flow is positioned in a clamping area formed by the outer surface of the unwinding spool adjacent to the unwound silk yarn and the unwound silk yarn.

12. The anti-sticking yarn unwinding method according to claim 11, wherein said air blowing is supplied at a pressure of 0.5 to 5Mpa; and/or the blowing velocity of the blowing air is 0.1-0.4 m ³ /min。

13. The anti-snag unwinding method of claim 11 or 12, further comprising the steps of:

after the step of blowing, an unwinding air stream is provided to the blown unwound yarn.

14. The anti-seize unwinding method as claimed in claim 13, characterized in that said unwinding air flow has a feed air pressure of 0.5-2 Mpa; and/or the purge flow rate of the unwinding air flow is 0.05-0.2 m ³ /min。