CN219079711U

CN219079711U - Solidification forming device

Info

Publication number: CN219079711U
Application number: CN202223506135.4U
Authority: CN
Inventors: 李文涛; 张超波; 冉辉
Original assignee: Jiangsu Baode New Material Co ltd
Current assignee: Jiangsu Baode New Material Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-26
Anticipated expiration: 2032-12-27

Abstract

The present utility model relates to a solidification molding device. The device comprises a feeding system, a spinning nozzle connected with the feeding system, a coagulation bath assembly and a traction system, wherein the coagulation bath assembly comprises a U-shaped pipe, a liquid inlet pipe for introducing coagulation bath liquid and a liquid outlet pipe for introducing coagulation bath liquid, the U-shaped pipe comprises a main body, a first pipe and a second pipe which are connected at two opposite ends of the main body and are communicated with the main body, and the first pipe is communicated with the liquid inlet pipe with the free end facing the spinning nozzle; the second pipe is communicated with the liquid outlet pipe, and the fiber is pulled to a traction system from the free end of the second pipe; the body is generally U-shaped and has a plurality of projections. According to the coagulation forming device, the plurality of protrusions are arranged on the main body part, so that the contact area between the fibers and the main body is relatively small in the turning process, friction can be reduced, the pause phenomenon in the spinning process can be improved, and the quality of the fibers is improved.

Description

Solidification forming device

Technical Field

The utility model relates to a solidification forming device, in particular to a polyaromatic oxadiazole fiber solidification forming device.

Background

The density of the aromatic Polyoxadiazole (POD) spinning solution is about 1.85g/mL, the density of the coagulation bath is about 1.3g/mL, and the density of the POD spinning solution is greater than the density of the coagulation bath, so if the POD spinning solution is coagulated and molded by using the coagulation and molding device disclosed in patent CN 106757451B, the fiber is easily dropped in the process of horizontal drawing, which affects the uniformity of fiber molding. The spinning direction is changed from horizontal to vertical, so that the phenomenon can be avoided to a certain extent, and the uniformity of fiber performance is improved.

Patent CN 112575395B discloses a heterocyclic aramid fiber solidification forming device, which enables spinning solution to be solidified and formed along the vertical direction by arranging a U-shaped glass tube. However, the present inventors found that the surface of the filament bundle formed by coagulation forming of the POD spinning solution is rough and the contacted object causes significant friction, for example, the coagulation forming device in patent CN 112575395B is adopted, the filament bundle has a large area contact with the glass tube during turning, a large friction force is generated, and the movement of the filament bundle is discontinuous to generate a bump phenomenon, so that the quality of the manufactured POD fiber is affected.

Disclosure of Invention

The utility model aims to provide a novel solidification forming device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the coagulation forming device comprises a feeding system for feeding, a spinning nozzle connected with the feeding system and used for spraying spinning solution, a coagulation bath assembly and a traction system, wherein the coagulation bath assembly comprises a U-shaped pipe, a liquid inlet pipe used for introducing the coagulation bath and a liquid outlet pipe used for introducing the coagulation bath, the U-shaped pipe comprises a main body, a first pipe and a second pipe which are connected at two opposite ends of the main body and communicated with the main body, the free end of the first pipe faces the spinning nozzle, the spinning nozzle is positioned above the first pipe, so that the spinning solution sprayed by the spinning nozzle falls into the first pipe and is coagulated and formed in the U-shaped pipe, and the first pipe is communicated with the liquid inlet pipe; the second pipe is communicated with the liquid outlet pipe, and the solidified fiber is pulled to the traction system from the free end of the second pipe; the body is generally U-shaped and has a plurality of projections.

According to the utility model, the plurality of protrusions are arranged on the main body part, so that the contact area between the fibers and the main body in the turning process is relatively small, friction can be reduced, the phenomenon of pause in the spinning process can be improved, and the quality of the fibers is improved.

Preferably, the main body has a first section connected to the first pipe, a second section connected to the second pipe, and an intermediate section between the first section and the second section, the first section and the second section being straight pipes, respectively, the straight pipes extending in a vertical direction; the middle section is provided with a plurality of bulges, and two adjacent bulges are directly connected.

By arranging the first section and the second section as straight pipes respectively, on one hand, the spinning solution enters the coagulating bath along the vertical direction, so that the phenomenon of falling in the coagulating bath due to larger spinning liquid density is avoided, and the uniformity of fiber forming is improved; on the other hand, the traction of the fiber is facilitated, and the friction between the fiber and the pipe wall is reduced.

Preferably, the lengths of the first section and the second section along the vertical direction are respectively 15-25 cm, such as 15cm, 17cm, 19cm, 21cm, 22cm, 24cm or 25cm.

Preferably, the first section is sleeved on the first pipe, and a first hoop is further arranged on the outer side of the first section, which coincides with the first pipe, and is used for tightly fitting the first section with the first pipe; the second section is sleeved on the second pipe, and a second hoop is further arranged on the outer side of the second section, which coincides with the second pipe, and is used for enabling the second section to be tightly attached to the second pipe.

Further preferably, the first tube is coaxial with the first segment and the second tube and the second segment are coaxial.

According to some preferred embodiments, the material of the main body is polytetrafluoroethylene.

According to some preferred embodiments, the material of the first tube and the second tube is polypropylene (PP), respectively.

Preferably, the length of the main body is 100-300 cm, for example 100cm, 120cm, 140cm, 160cm, 180cm, 200cm, 220cm, 240cm, 260cm, 280cm, 300cm, etc.

Preferably, the coagulation bath assembly further comprises a first box body, a second box body and a third box body which can contain coagulation bath liquid, wherein the first box body, the second box body and the third box body are all positioned above the main body, the first box body is communicated with the liquid inlet pipe, the spinning nozzle part or all of the spinning nozzle part is arranged in the first box body, and the first pipe part is arranged in the first box body; the second pipe portion is disposed within the second tank; the third box body is communicated with the second box body, the third box body is communicated with the liquid outlet pipe, the extension part of the liquid outlet pipe is arranged in the third box body, and the height of the extension part is adjustable.

Further preferably, the coagulation forming device has a first state and a second state, when in the first state, an inlet end of the extension is not lower than a spout end of the spinneret cap, such that the spout end of the spinneret cap is immersed in a coagulation bath; when in the second state, the inlet end of the extension part is lower than the nozzle end of the spinning nozzle, so that the nozzle end of the spinning nozzle is at a certain distance from the liquid level of the coagulating bath.

According to some preferred embodiments, the extension comprises an inner tube and an outer tube sleeved on the inner tube, the inner tube is connected with the liquid outlet tube, and the outer tube is coaxial with the inner tube and is in threaded connection.

Preferably, the spinneret cap is spaced from the first tube by 0.3-3.0 cm, for example 0.3cm, 0.5cm, 0.8cm, 1cm, 1.3cm, 1.5cm, 1.8cm, 2.0cm, 2.3cm, 2.5cm, 2.8cm, 3.0cm, etc.

Preferably, the spin-coating cap is coaxial with the first tube.

Preferably, the feed system comprises a filter connected to the feed tank and a feed tube connected between the filter and the spin-coating cap.

Preferably, the traction system comprises a supporting seat, a godet and a traction assembly, wherein the godet is rotationally arranged on the supporting seat, the godet is positioned right above the second pipe, and the rotation axis of the godet is parallel to the horizontal line; the pulling assembly includes a plurality of pulling rolls for pulling the fibers.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the coagulation forming device, the plurality of protrusions are arranged on the main body part, so that the contact area between the fibers and the main body is relatively small in the turning process, friction can be reduced, the pause phenomenon in the spinning process can be improved, and the quality of the fibers is improved.

Drawings

FIG. 1 is a schematic view of a solidification molding apparatus according to the present utility model in a first state;

FIG. 2 is a schematic view of a setting forming device (only part of which is shown) in a second state according to the present utility model;

wherein, 1, a spinning cap;

21. a main body; 211. a first section; 212. a second section; 213. an intermediate section; 22. a first tube; 23. a second tube; 24. the first hoop; 25. the second hoop;

31. a first case; 32. a second case; 33. a third case;

4. a liquid inlet pipe; 41. an inner tube; 42. an outer tube;

51. a filter; 52. a feed pipe;

61. a support base; 62. a godet roller; 63. a traction roller;

71. a bottom plate 71; 72. a bottom support frame;

8. a fiber;

l1, distance from the spinning nozzle to the first pipe; l2, length of the first section in the vertical direction.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings.

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. refer to the azimuth or the positional relationship based on the azimuth or the positional relationship shown in fig. 1, for example, the position of the godet 62 is taken as the upper position, and the position of the liquid outlet tube is taken as the lower position; the first case 31 is positioned right, and the second case 32 is positioned left. The above orientation or positional relationship is merely for convenience in describing embodiments of the present utility model and to simplify the description, and is not indicative or implying that the apparatus or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In describing embodiments of the present utility model, it should be understood that the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In embodiments of the utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

Example 1

A coagulation forming device comprises a feeding system for feeding, a spinning nozzle 1 connected with the feeding system and used for spraying spinning solution, a coagulation bath assembly and a traction system.

The coagulation bath assembly comprises a U-shaped tube, a liquid inlet tube 4 for introducing coagulation bath liquid and a liquid outlet tube (not shown in the figure) for introducing coagulation bath liquid.

Referring to fig. 2, the u-shaped tube includes a main body 21, a first tube 22 and a second tube 23, wherein the first tube 22 and the second tube 23 are respectively connected at two opposite ends of the main body 21 and are communicated with the main body 21, a free end of the first tube 22 faces the spinning cap 1, the spinning cap 1 is located above the first tube 22, so that spinning solution sprayed by the spinning cap 1 falls into the first tube 22, and a distance L1 from the spinning cap to the first tube is 0.3-3.0 cm. Preferably, the first tube 22 is coaxial with the spinning cap 1 such that the spinning solution ejected from the spinning cap 1 is located at the middle portion of the first tube 22 without contacting the inner wall of the first tube 22. The first pipe 22 is communicated with the liquid inlet pipe 4, the second pipe 23 is communicated with the liquid outlet pipe, the coagulating bath liquid sequentially flows into the first pipe 22, the main body 21 and the second pipe 23 through the liquid inlet pipe 4, then is discharged from the liquid outlet pipe, and the spinning liquid is coagulated and molded in the U-shaped pipe to form fibers 8, and is pulled out from the free end of the second pipe 23 by a traction system, so that the spinning liquid enters the subsequent working procedure.

The body 21 is generally U-shaped, with the body 21 having a plurality of projections. The inventor finds that when the filament bundle passes through the U-shaped main body 21, the filament bundle is contacted with the main body 21 in a larger area in the turning process, the surface of the filament bundle formed by solidifying and forming the POD spinning solution is rough, and the contacted object can cause more remarkable friction, so that when the filament bundle passes through the turning part of the main body 21, larger friction force is generated with the main body 21 to influence the drafting of the filament bundle, the discontinuous movement of the filament bundle is caused, and the pause phenomenon is generated to influence the product quality. Through the protruding design of main part 21 part, especially set up the arch in the corner of main part 21, can reduce the area of contact of silk bundle and main part 21 to reduce the frictional force of silk bundle and main part 21, improve the phenomenon of setback in the spinning process. The inventors have found that the quality of the fibres 8 is greatly improved by the use of this main body 21 structure.

Specifically, the material of the main body 21 is polytetrafluoroethylene. The polytetrafluoroethylene main body 21 is smooth, and damage caused by friction between the filament bundles and the main body 21 can be reduced. The length of the main body 21 is 100-300 cm, and the specific length can be designed according to the process requirements, and the utility model is not particularly limited.

The main body 21 has a first section 211 connected to the first pipe 22, a second section 212 connected to the second pipe 23, and an intermediate section 213 located between the first section 211 and the second section 212, the first section 211 and the second section 212 being straight pipes, respectively, the straight pipes extending in the vertical direction (up-down direction); the middle section 213 has a plurality of protrusions, with two adjacent protrusions being directly connected. Preferably, the lengths of the first section 211 and the second section 212 along the vertical direction are respectively 15-25 cm independently. In this embodiment, the length L2 of the first section in the vertical direction is 20cm, and the length of the second section 212 in the vertical direction is 20cm.

Further, the first section 211 is sleeved on the first pipe 22, and a first hoop 24 is further disposed on the outer side of the first section 211 overlapping with the first pipe 22, so that the first section 211 and the first pipe 22 are tightly attached. Similarly, the second section 212 is sleeved on the second pipe 23, and a second hoop 25 is further arranged on the outer side of the second section 212 overlapping with the second pipe 23, so that the second section 212 and the second pipe 23 are tightly attached to each other to prevent liquid leakage. The first tube 22 and the second tube 23 are made of polypropylene, and the first tube 22 is coaxial with the first section 211, and the second tube 23 is coaxial with the second section 212.

Referring to fig. 1, the coagulation forming device further includes a bottom plate 71, and the coagulation bath assembly further includes a first case 31, a second case 32, and a third case 33 capable of containing a coagulation bath. The first box 31, the second box 32 and the third box 33 are all positioned above the main body 21 and are arranged on the bottom plate 71, the first box 31 is communicated with the liquid inlet pipe 4 (not shown in the figure), the spinning cap 1 is partially or completely arranged in the first box 31, and the first pipe 22 passes through the bottom plate 71 and is partially arranged in the first box 31; the second pipe 23 passes through the bottom plate 71 and is partially disposed in the second tank 32; the third box 33 is communicated with the second box 32, the third box 33 is communicated with a liquid outlet pipe, an extension part of the liquid outlet pipe penetrates through the bottom plate 71 and is arranged in the third box 33, and the height of the extension part is adjustable. By adjusting the height of the extension, the height of the coagulation bath liquid level in the first tank 31 can be controlled so that the coagulation forming device has a first state capable of being used for wet spinning and a second state capable of being used for dry/wet spinning.

Referring to fig. 1, when in the first state, the inlet end of the extension is not lower than the spout end of the spin-coating cap 1, such that the spout end of the spin-coating cap 1 is immersed in the coagulation bath. Referring to fig. 2, when in the second state, the inlet end of the extension is lower than the spout end of the spin-coating cap 1, so that the spout end of the spin-coating cap 1 is at a distance from the liquid surface of the coagulation bath. The specific distance can be obtained by adjusting the height difference between the inlet end of the extension part and the nozzle end of the spinning nozzle 1 according to the process requirement.

In this embodiment, the extension portion includes an inner tube 41 and an outer tube 42 sleeved on the inner tube 41, the inner tube 41 is connected with the liquid outlet tube, and the outer tube 42 is coaxial with and screwed to the inner tube 41. By rotating the outer tube 42, the outer tube 42 is moved in the up-down direction with respect to the inner tube 41, thereby adjusting the height of the extension.

The feed system comprises a filter 51 connected to the feed tank and a feed pipe 52 connected between the filter 51 and the spin-coating cap 1. The structure of the filter 51 is not particularly limited with reference to the related art.

The traction system comprises a support seat 61, a godet 62 and a traction assembly. The support base 61 is fixedly provided on the base 71, and the godet 62 is rotatably provided on the support base 61 and located right above the second tube 23, and the rotation axis of the godet 62 is parallel to the horizontal line (or extends in the left-right direction). The pulling assembly comprises a plurality of pulling rolls 63 for pulling the fibre 8.

The setting forming device further includes a bottom support frame 72, and the bottom support frame 72 is disposed on the bottom plate 71 and below the bottom plate 71.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A solidification forming device, characterized in that: comprises a feeding system for feeding, a spinning nozzle connected with the feeding system and used for spraying spinning solution, a coagulating bath component and a traction system,

the coagulating bath assembly comprises a U-shaped pipe, a liquid inlet pipe for introducing coagulating bath liquid and a liquid outlet pipe for introducing coagulating bath liquid, wherein the U-shaped pipe comprises a main body, a first pipe and a second pipe which are connected at two opposite ends of the main body and are communicated with the main body, the free end of the first pipe faces to the spinning nozzle, the spinning nozzle is positioned above the first pipe, so that spinning liquid sprayed by the spinning nozzle falls into the first pipe and is coagulated and formed in the U-shaped pipe, and the first pipe is communicated with the liquid inlet pipe; the second pipe is communicated with the liquid outlet pipe, and the solidified fiber is pulled to the traction system from the free end of the second pipe; the body is generally U-shaped and has a plurality of projections.

2. The solidification molding apparatus according to claim 1, wherein: the main body is provided with a first section connected with the first pipe, a second section connected with the second pipe and an intermediate section positioned between the first section and the second section, the first section and the second section are respectively straight pipes, and the straight pipes extend along the vertical direction; the middle section is provided with a plurality of bulges, and two adjacent bulges are directly connected.

3. The solidification molding apparatus according to claim 2, characterized in that: the lengths of the first section and the second section along the vertical direction are respectively and independently 15-25 cm.

4. The solidification molding apparatus according to claim 2, characterized in that: the first section is sleeved on the first pipe, and a first hoop is further arranged on the outer side of the first section, which coincides with the first pipe, and is used for enabling the first section to be tightly attached to the first pipe; the second section is sleeved on the second pipe, and a second hoop is further arranged on the outer side of the second section, which coincides with the second pipe, and is used for enabling the second section to be tightly attached to the second pipe; and/or the number of the groups of groups,

the first tube is coaxial with the first segment, and the second tube is coaxial with the second segment.

5. The solidification molding apparatus according to claim 1, wherein: the main body is made of polytetrafluoroethylene; and/or the number of the groups of groups,

the first pipe and the second pipe are respectively made of polypropylene.

6. The solidification molding apparatus according to claim 1, wherein: the length of the main body is 100-300 cm.

7. The solidification molding apparatus according to claim 1, wherein: the coagulating bath assembly further comprises a first box body, a second box body and a third box body which can contain coagulating bath liquid, wherein the first box body, the second box body and the third box body are all positioned above the main body, the first box body is communicated with the liquid inlet pipe, the spinning nozzle part or all of the spinning nozzle part is arranged in the first box body, and the first pipe part is arranged in the first box body; the second pipe portion is disposed within the second tank; the third box body is communicated with the second box body, the third box body is communicated with the liquid outlet pipe, the extension part of the liquid outlet pipe is arranged in the third box body, and the height of the extension part is adjustable.

8. The solidification molding apparatus of claim 7, wherein: the solidification forming device is provided with a first state and a second state, and when the solidification forming device is in the first state, the inlet end of the extension part is not lower than the nozzle end of the spinning nozzle, so that the nozzle end of the spinning nozzle is immersed in a solidification bath; when in the second state, the inlet end of the extension part is lower than the nozzle end of the spinning nozzle, so that the nozzle end of the spinning nozzle is at a certain distance from the liquid level of the coagulating bath.

9. The solidification molding apparatus of claim 7, wherein: the extension part comprises an inner pipe and an outer pipe sleeved on the inner pipe, the inner pipe is communicated with the liquid outlet pipe, and the outer pipe is coaxial with the inner pipe and is in threaded connection.

10. The solidification molding apparatus according to claim 1 or 7, characterized in that: the distance between the spinning nozzle and the first pipe is 0.3-3.0 cm.

11. The solidification molding apparatus according to claim 1, wherein: the spin-coating cap is coaxial with the first tube.

12. The solidification molding apparatus according to claim 1, wherein: the feeding system comprises a filter connected with the feeding tank and a feeding pipe connected between the filter and the spinning nozzle; and/or the number of the groups of groups,

the traction system comprises a supporting seat, a godet and a traction assembly, wherein the godet is rotationally arranged on the supporting seat, the godet is positioned right above the second pipe, and the rotation axis of the godet is parallel to the horizontal line; the pulling assembly includes a plurality of pulling rolls for pulling the fibers.