阅读说明：本技术 一种纱线涂覆装置 (Yarn coating device ) 是由 李汉利 杨祖民 李超 李汉顺 李希学 李正宁 王育新 孟菲 于 2020-04-29 设计创作，主要内容包括：一种纱线涂覆装置,包括涂布机构,所述涂布机构包括旋转部和固定部,在旋转部和固定部之间设有用于纱线通过的通道；所述旋转部包括转轴,在转轴上套设一压轮,所述固定部包括与压轮配合设置的弧形凹槽,在弧形凹槽内设有不少于两个的用于细纱通过的痕槽,在弧形凹槽内设有若干通孔,在弧形凹槽下设有一与通孔连通设置的涂覆液腔。本申请采用外凸弧形的压轮以及与之配合的弧形凹槽,使得纱线能够挤压在压轮和弧形凹槽之间的痕槽内,从而使得涂覆液腔体内的涂覆液是定点涂覆在纱线的外侧,而非是全纱线设置,如此设置主要是在尽量少的影响纱线强度的前提,来保证棉质纱线进行燃烧时的安全性。(A yarn coating device comprises a coating mechanism, wherein the coating mechanism comprises a rotating part and a fixed part, and a channel for yarn to pass through is arranged between the rotating part and the fixed part; the rotating part includes the pivot, overlaps in the pivot and establishes a pinch roller, the fixed part includes the arc recess that sets up with the pinch roller cooperation, is equipped with in the arc recess to be no less than two be used for the trace groove that the spun yarn passes through, is equipped with a plurality of through-holes in the arc recess, has one and the coating sap cavity that the through-hole intercommunication set up under the arc recess. This application adopts convex arc's pinch roller and complex arc recess with it for the yarn can be extruded in the trace groove between pinch roller and arc recess, thereby make the coating liquid in the coating liquid cavity be the fixed point coating in the outside of yarn, and not the full yarn setting, so set up mainly be at the prerequisite of the influence yarn intensity as far as possible, security when guaranteeing cotton yarn and burning.)

1. A yarn coating apparatus characterized by: the coating mechanism comprises a rotating part and a fixing part, wherein a channel for passing yarns is arranged between the rotating part and the fixing part; the rotating part includes the pivot, overlaps in the pivot and establishes a pinch roller, the fixed part includes the arc recess that sets up with the pinch roller cooperation, is equipped with in the arc recess to be no less than two be used for the trace groove that the spun yarn passes through, is equipped with a plurality of through-holes in the arc recess, has one and the coating sap cavity that the through-hole intercommunication set up under the arc recess.

2. A yarn coating apparatus as claimed in claim 1, wherein: the surface of the pinch roller is in an outward convex arc shape; the through holes are arranged corresponding to the trace grooves.

3. A yarn coating apparatus as claimed in claim 2, wherein: the cross section of the trace groove is semicircular, the pinch roller is provided with a pressing groove which is oppositely matched with the trace groove, and the cross section of the pressing groove is semicircular.

4. A yarn coating apparatus as claimed in claim 3, wherein: a rubber layer is arranged in the arc-shaped groove, and the pressing wheel is in interference fit with the rubber layer.

5. A yarn coating apparatus as claimed in claim 4, wherein: the cross sectional area of the trace groove is smaller than that of the correspondingly arranged indent.

6. A yarn coating apparatus as claimed in claim 1, wherein: a shaping mechanism is arranged behind the coating mechanism, the shaping mechanism comprises a supporting plate, and an infrared heater is arranged above the supporting plate.

7. A yarn coating apparatus as claimed in claim 6, wherein: the supporting plate is a polytetrafluoroethylene plate.

8. A yarn coating apparatus as claimed in claim 6, wherein: coating liquid is arranged in the coating liquid cavity, the coating liquid cavity is communicated with an external pipeline, and the gauge pressure of the coating liquid supplied by the external pipeline is 0.1-0.2 MPa; the solvent of the coating liquid is petroleum ether, and the solute is peroxyacetic acid and paraffin.

9. A yarn coating apparatus as claimed in claim 8, wherein: the mass portion of the petroleum ether is 60-80; the mass portion of the paraffin is 4-8; the mass portion of the peroxyacetic acid is 2-3.

10. A yarn coating apparatus as claimed in claim 8, wherein: the coating mechanism and the shaping mechanism are arranged in the isolation cavity, and the exhaust fan is communicated with the isolation cavity.

Technical Field

The present application relates to a yarn coating device.

Background

In some chemical production places, especially in some abnormal sampling such as overhauls, inspection, sample, abnormal operating mode such as flame emerges probably can appear. In order to reduce secondary injury, operators are generally required to wear all cotton clothes, so that when accidents such as combustion occur, the cotton clothes cannot be attached to the skin of a person to continuously burn to cause high temperature, and secondary injury is caused. In order to modify the yarn, the existing equipment is complex and generally starts from the cotton loosening of cotton, which substantially increases the processing difficulty, reduces the direct action of the added components and prolongs the whole period.

Disclosure of Invention

In order to solve the above problems, the present application proposes a yarn coating device comprising a coating mechanism including a rotating part and a fixed part, a passage for passage of a yarn being provided between the rotating part and the fixed part; the rotating part includes the pivot, overlaps in the pivot and establishes a pinch roller, the fixed part includes the arc recess that sets up with the pinch roller cooperation, is equipped with in the arc recess to be no less than two be used for the trace groove that the spun yarn passes through, is equipped with a plurality of through-holes in the arc recess, has one and the coating sap cavity that the through-hole intercommunication set up under the arc recess. This application adopts convex arc's pinch roller and complex arc recess with it for the yarn can be extruded in the trace groove between pinch roller and arc recess, thereby make the coating liquid in the coating liquid cavity be the fixed point coating in the outside of yarn, and not the full yarn setting, so set up the prerequisite that mainly influences yarn intensity as few as possible, security when guaranteeing cotton yarn and burning, do not have special explanation, the yarn in this application is cotton yarn.

Preferably, the surface of the pressing wheel is in an outward convex arc shape; the through holes are arranged corresponding to the trace grooves.

Preferably, the cross section of the trace groove is semicircular, the pinch roller is provided with a pressing groove which is oppositely matched with the trace groove, and the cross section of the pressing groove is semicircular.

Preferably, a rubber layer is arranged in the arc-shaped groove, and the pressing wheel is in interference fit with the rubber layer.

Preferably, the cross-sectional area of the trace groove is smaller than that of the correspondingly arranged indent.

Preferably, a shaping mechanism is arranged behind the coating mechanism, the shaping mechanism comprises a supporting plate, and an infrared heater is arranged above the supporting plate.

Preferably, the support plate is a polytetrafluoroethylene plate.

Preferably, coating liquid is arranged in the coating liquid cavity, the coating liquid cavity is communicated with an external pipeline, and the gauge pressure of the coating liquid supplied by the external pipeline is 0.1-0.2 MPa; the solvent of the coating liquid is petroleum ether, and the solute is peroxyacetic acid and paraffin.

Preferably, the petroleum ether is 60-80 parts by weight; the mass portion of the paraffin is 4-8; the mass portion of the peroxyacetic acid is 2-3. The petroleum ether is used as the solvent, so that the volatilization can be fast carried out, and the property deterioration of the yarn is avoided; the peroxyacetic acid is adopted for the purpose of carrying out local oxidation on cotton yarns, so that more oxidation nodes are generated, the combustion is promoted to be rapidly carried out, smoldering is avoided, and parts capable of promoting the combustion are generated; the purpose that this application adopted paraffin is in order to carry out protection to a certain extent to the yarn after peroxyacetic acid oxidation treatment finishes, reduces the destruction degree of cotton yarn, carries out maintenance to a certain extent to the yarn for yarn intensity is unlikely to too much reduction.

Preferably, the coating mechanism and the shaping mechanism are arranged in the isolation cavity, and the row of fans are communicated with the isolation cavity.

This application can bring following beneficial effect:

1. the convex arc-shaped pressing wheel and the arc-shaped groove matched with the convex arc-shaped pressing wheel are adopted, so that yarns can be extruded in the trace groove between the pressing wheel and the arc-shaped groove, coating liquid in a coating liquid cavity is coated on the outer side of the yarns at a fixed point instead of being arranged in a full yarn mode, and the safety of cotton yarns during combustion is ensured mainly on the premise that the strength of the yarns is influenced as little as possible;

2. the petroleum ether is used as the solvent, so that the volatilization can be fast carried out, and the property deterioration of the yarn is avoided; the peroxyacetic acid is adopted for the purpose of carrying out local oxidation on cotton yarns, so that more oxidation nodes are generated, the combustion is promoted to be rapidly carried out, smoldering is avoided, and parts capable of promoting the combustion are generated; the purpose that this application adopted paraffin is in order to carry out protection to a certain extent to the yarn after peroxyacetic acid oxidation treatment finishes, reduces the destruction degree of cotton yarn, carries out maintenance to a certain extent to the yarn for yarn intensity is unlikely to too much reduction.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of the present application;

fig. 2 is a schematic structural view of the coating mechanism.

Detailed Description

In order to clearly explain the technical features of the present invention, the present application will be explained in detail by the following embodiments in combination with the accompanying drawings.

As shown in the drawings, the following detailed description is given by way of example in order to more clearly explain the overall concept of the present application.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

Furthermore, the terms "first", "second" and "first" 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 defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In a first embodiment, as shown in fig. 1-2, a yarn coating device comprises a coating mechanism 1, said coating mechanism 1 comprising a rotating part 2 and a fixed part 3, a passage for the passage of yarn being provided between the rotating part 2 and the fixed part 3; rotating part 2 includes pivot 4, and a pinch roller 5 is established to the cover in pivot 4, fixed part 3 includes the arc recess 6 that sets up with the cooperation of pinch roller 5, is equipped with in arc recess 6 to be no less than two be used for the trace groove 7 that the spun yarn passes through, is equipped with a plurality of through-holes 8 in arc recess 6, has one at arc recess 6 and communicates the coating sap cavity 9 that sets up with through-hole 8. The surface of the pinch roller 5 is in an outward convex arc shape; the through holes 8 are arranged corresponding to the trace grooves 7. The section of the trace groove 7 is semicircular, the pinch roller 5 is provided with a pressing groove 10 which is oppositely matched with the trace groove 7, and the section of the pressing groove 10 is semicircular. A rubber layer 11 is arranged in the arc-shaped groove 6, and the pinch roller 5 is in interference fit with the rubber layer 11. The cross-sectional area of the trace groove 7 is smaller than that of the correspondingly arranged indent 10. A shaping mechanism is arranged behind the coating mechanism 1, the shaping mechanism comprises a supporting plate 12, and an infrared heater 13 is arranged above the supporting plate 12. The support plate 12 is a teflon plate. The coating mechanism 1 and the shaping mechanism are arranged in the isolation cavity, and the row of fans are communicated with the isolation cavity.

When the device is used, yarns are placed in the channels of the rotating part 2 and the fixing part 3, the yarns are placed in the trace groove 7 and extend out of the trace groove 7, the upper part of the yarns is clamped by the inner wall of the pressing groove 10, coating is carried out by arranging 0.1-0.2MPa of coating liquid in the coating liquid cavity 9, and then petroleum ether is heated and volatilized by the aid of the supporting plate 12 and the infrared heater 13 on the upper part of the yarns.

In a second embodiment, the coating is performed with the material of the first embodiment, and the yarn coating solution is performed as follows:

the cotton is prepared into yarn according to the following steps:

1. cotton cleaning: the method comprises the following steps of cleaning impurities in cotton, opening the cotton bale for preliminary cleaning before the cotton bale enters a cotton cleaner, and removing obvious impurities and foreign matters. The cotton picker loosens the cotton bale into a free state for evacuation, and then mixing and impurity removal are carried out, so that the cotton is uniformly mixed, and the quality of the cotton yarn is ensured;

2. carding cotton: carding raw cotton, carding the raw cotton into a single fiber state, improving the length and the orientation degree of cotton fibers, and then carding the cotton fibers into strips so as to facilitate the subsequent working procedures of drafting the strips and the like. The cotton carding process can further remove fiber defects such as uncleaned neps, impurities, short fiber and short velvet, the fibers are fully mixed, the uniformity is improved, cotton carding is carried out to obtain cotton rolls with certain weight, length, thickness and good appearance, and then the cotton rolls are drafted to obtain cotton slivers meeting the requirements. In the drafting process, the cotton sliver is thinned to a certain thickness, and the parallel straightness of the fiber is improved;

3. drawing: improving the uneven length and the segment of the cotton sliver, comprising four steps of merging, drafting, mixing and slivering. Combining 6 cotton slivers, elongating and thinning the cotton slivers to a specified weight, further improving the straightening parallelism of the fibers, further uniformly mixing the fibers by using the combination and the drafting, mixing the fibers on a drawing frame to prepare cooked slivers with good coil formation, and sequentially placing the cooked slivers in a sliver barrel for subsequent working procedure operation;

4. preparing roving: the method comprises the steps of drafting and twisting, wherein the drafted sliver is uniformly elongated and attenuated by drafting, fibers are further straightened and parallel, then proper twisting is carried out, the sliver has certain strength so as to facilitate roving winding and unwinding on a spinning machine in the next process, and the coarse sand is finally set to be 3g/10m for quantitative molding;

5. preparing spun yarn: obtaining the yarn with specified fineness and strength, mainly comprising drafting, twisting, winding and forming. The roving is drawn to be thin to required fineness, fibers are straightened and parallel, the strand is twisted for a certain time to enhance the strength of the spun yarn, the spun yarn obtained after the drafting and twisting is wound on a bobbin to be made into tubular yarn with a certain size and shape, the tubular yarn is convenient to carry and process in the subsequent process, the spun yarn is spun by adopting compact siro spinning, and the post-drafting multiple is 1.2. After the preparation of the spun yarn, the yarn was coated by the apparatus of the present application.

Table 1:

6. and (3) performance measurement: the single yarn breaking strength of the yarn was measured and is reported in table 2; the 10cm length of yarn was placed on a 150 ℃ hot plate and the time to final burn and the burn profile were recorded.

Table 2:

serial number	Single yarn breaking strength (cN/tex)	Burning time(s)	State of combustion
				1	18.1	9	No flame and no smoldering
2	17.5	9	No flame and no smoldering
				3	18.2	8	No flame and no smoldering
4	13.8	11	No flame and no smoldering
				5	18.3	11	Has weak flame and smoldering
6	18.3	14	With flames or smoldering
				7	14.4	8	With weak flame and no smoldering
8	15.1	12	With flames or smoldering

Therefore, the paraffin and the peracetic acid have good combustion promoting effects, when the peracetic acid is not adopted, flame and smoldering are easily generated, when the paraffin is not adopted, the breaking strength is greatly influenced, and the possibility of smoldering generation can be reduced due to the paraffin.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.